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Date discovered:16/10/2007
Type:Backdoor Server
In the wild:Yes
Reported Infections:Low
Distribution Potential:Medium
Damage Potential:Medium
Static file:Yes
File size:192.000 Bytes
MD5 checksum:15ecf1e5ed645ca952204dae7fe7fd56
VDF version:
IVDF version:

 General Method of propagation:
   • Local network

   •  Kaspersky: Backdoor.Win32.Rbot.bmo
   •  Sophos: W32/Sdbot-CSV
   •  VirusBuster: Worm.Rbot.IRL
   •  Eset: Win32/Rbot trojan
   •  Bitdefender: Backdoor.Rbot.BMO

Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003

Side effects:
   • Disable security applications
   • Records keystrokes
   • Registry modification
   • Makes use of software vulnerability
   • Steals information
   • Third party control

 Files It copies itself to the following location:
   • %SYSDIR%\IRQconf.exe

It deletes the initially executed copy of itself.

The following files are created:

– c:\a.bat Furthermore it gets executed after it was fully created. Detected as: BAT/REG.Zapchast

– C:\DOCUME~1\name1252\LOCALS~1\Temp\1.reg Furthermore it gets executed after it was fully created. Contains parameters used by the malware. Detected as: TR/TCPParams.D.3

 Registry The following registry keys are continuously in an infinite loop added in order to run the processes after reboot.

–  [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "IRQ Assigning Agent"="IRQconf.exe"

–  [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices]
   • "IRQ Assigning Agent"="IRQconf.exe"

The following registry key is added:

– [HKCU\Software\Microsoft\OLE]
   • "IRQ Assigning Agent"="IRQconf.exe"

The following registry keys are changed:

Deactivate Windows Firewall:
– [HKLM\SYSTEM\ControlSet001\Services\SharedAccess]
   Old value:
   • Start=dword:00000002
   New value:
   • Start=dword:00000004

– [HKLM\SYSTEM\ControlSet001\Services\wuauserv]
   Old value:
   • Start=dword:00000002
   New value:
   • Start=dword:00000004

– [HKLM\SYSTEM\ControlSet001\Services\wscsvc]
   Old value:
   • Start=dword:00000002
   New value:
   • Start=dword:00000004

– [HKLM\SYSTEM\ControlSet001\Control\Lsa]
   Old value:
   • "restrictanonymous"=%user defined settings%
   New value:
   • restrictanonymous=dword:00000001

– [HKLM\SYSTEM\ControlSet001\Control\SecurityProviders\SCHANNEL\
   New value:
   • Enabled=hex:00

– [HKLM\SOFTWARE\Microsoft\Ole]
   Old value:
   • EnableDCOM=%user defined settings%
   New value:
   • EnableDCOM="N"

– [HKLM\SYSTEM\ControlSet001\Services\lanmanserver\parameters]
   New value:
   • AutoShareWks=dword:00000000

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
   New value:
   • MaxConnectionsPer1_0Server=dword:00000050

– [HKLM\SYSTEM\ControlSet001\Services\Tcpip\Parameters]
   New value:
   • "NameServer"=""
     "FastSendDatagramThreshold "=dword:00000400
     "StandardAddressLength "=dword:00000018
     "DefaultReceiveWindow "=dword:00004000
     "DNSQueryTimeouts" =%hex values%
     "UpdateSecurityLevel "=dword:00000000

 Network Infection In order to ensure its propagation the malware attemps to connect to other machines as described below.

It drops a copy of itself to the following network share:
   • % all network shares%

It uses the following login information in order to gain access to the remote machine:

– A list of usernames and passwords:
   • Administrator; administrator; administrador; administrateur;
      administrat; admins; admin; staff; root; computer; owner; student;
      teacher; wwwadmin; guest; default; database; dba; oracle; db2;
      ADMINISTRATOR; Administrator; administrator; fubar; bla; GUEST; ROOT;
      SERVER; pepsi; LOCAL; unix; linux; changeme; Changeme; temp123; 31;
      12; 123; 1234; 12345; 123456; 1234567; 12345678; 123456789; 654321;
      54321; 111; 11111111; 88888888; pass; passwd; database; abcd; abc123;
      oracle; sybase; 123qwe; computer; Internet; super; 123asd;
      ihavenopass; godblessyou; enable; xp; 2002; 2003; 2600; 110; 111111;
      121212; 123123; 1234qwer; 123abc; 007; alpha; patrick; pat; sex; god;
      foobar; Nilez; devil; netdevil; net-devil; 0wned; owned; irule;
      netfuck; fucked; crash; aaa; abc; test123; win; pc; asdf; secret;
      qwer; yxcv; zxcv; home; login; pwd; love; mypc; mypc123; admin123;
      pw123; mypass; mypass123; pw; Mat; Matt; Matthew; gobo; satan;
      satanik; satanic; spaceman; heaven; w00t; 0wn3d; killer; leet; l33t;
      l337; hacker; hax0r; script; scriptkiddie; kiddie; mirc; uwontguessme;
      youwontguessme; guessme; ex; xx; xxx; xxxx; xxxxx; xxxxxx; xxxxxxx;
      xxxxxxxx; xxxxxxxxx; 00; death; testing; 000; 0000; 00000; 000000;
      academia; academic; accept; account; action; adam; adrian; adrianna;
      adult; aerobics; aids; airplane; alaska; albany; albatros; albert;
      alert; alex; alexande; algebra; alias; aliases; alice; alicia; alisa;
      alison; allison; allow; alphabet; amadeus; amanda; amber; america;
      amorphou; anal; analog; anarchis; anarchy; anchor; andrea; android;
      andromac; andy; anfo; angela; angerine; angie; animal; animals; anita;
      anna; anne; annette; anon; anonymou; answer; anthrax; anthropo;
      anvils; anything; apollo13; april; aria; ariadne; arlene; army; arrow;
      arthur; artist; asian; asshole; athena; atmosphe; atom; attack;
      authoriz; aztecs; azure; babe; baby; bacchus; backdoor; badass;
      bailey; ball; banana; bananas; bandit; bank; banks; barbara; barber;
      bare; barf; baritone; bart; bartman; baseball; basic; bass; bassoon;
      batch; batman; beach; beammeup; bear; beast; beater; beauty; beaver;
      becky; beethove; begin; behead; bell; beloved; benz; beowulf;
      berkeley; berlin; berliner; beryl; beta; beth; betsie; betty; beverly;
      bible; bicamera; bigfoot; bill; binary; bios; bird; bishop; bitch;
      bitmap; bitnet; black; blonde; blondie; blood; bloodaxe; blow;
      blowjob; blue; blues; board; bomb; boner; boob; boobs; book; born;
      boyscout; bradley; brandi; brandy; bravo; break; breast; brenda;
      brian; bridget; broadway; brothel; brunette; brute; brutefor; bulls;
      bullshit; bumbling; bung; burgess; burn; butch; butt; butthead;
      californ; camille; campanil; camping; candi; candy; cantor; captain;
      capture; card; cardinal; caren; carla; carmen; carol; carole;
      carolina; caroline; carrie; carson; cascades; cash; castle; catherin;
      catholic; cathy; cave; cayuga; cecily; celt; celtic; celtics;
      cerulean; change; charity; charles; charlie; charming; charon; chat;
      chem; chemistr; chess; chester; chip; chris; christin; christy; cigar;
      cigarett; cindy; class; classes; classic; claudia; claymore; cleavage;
      clinton; cluster; clusters; coast; cocacola; cocainco; cock; code;
      codename; codeword; coffee; coin; coke; cola; cold; collins; color;
      combat; comics; commit; commrade; company; computin; comrade;
      comrades; condo; condom; connect; connie; conserva; console; continue;
      cook; cookbook; cookie; cool; cooper; copper; cops; copy; corneliu;
      correct; counters; country; couscous; cowboy; crack; crackpot; cream;
      create; creation; creature; credit; creosote; cretin; crime; criminal;
      cristina; crystal; cshrc; cunt; customer; cyber; cyberpun; cyberspa;
      cynthia; daemon; daisy; dana; dancer; daniel; danielle; danny; dapper;
      dark; darkaven; data; dave; dawn; dead; deathsta; debbie; deborah;
      debug; december; deck; default; DEFAULT; defoe; delta; deluge;
      democrat; denise; dennis; desiree; desk; desktop; desperat; develop;
      device; dial; diamond; diana; diane; dice; dick; diehard; diet;
      dieter; digital; dinosaur; dipshit; direct; director; dirty; disc;
      discipli; disclose; discover; disk; diskette; disney; display; doctor;
      dollar; dong; doom; doom2; doomii; doomsday; doonesbu; door; doors;
      dope; download; dragon; drdoom; drive; drought; duck; dude; duelist;
      duke; dulce; duncan; dungeon; dyke; eager; eagle; earth; easier; easy;
      eatme; echo; eddie; edges; edinburg; edit; edition; education;
      educatio; edwin; edwina; egghead; eiderdow; eileen; einsiein;
      einstein; elaine; elanor; electron; elephant; elizabet; ellen; email;
      emerald; emily; emmanuel; enemy; engine; engineer; england; english;
      enter; enterpri; enzyme; erenity; eric; erica; erika; erin; erotic;
      ersatz; establis; estate; eternity; euclid; evelyn; expert; explode;
      explore; explorer; explosiv; extensio; fairway; faith; falcon; false;
      family; farad; faraday; fart; fast; fear; feds; felicia; fender;
      fermat; ferrari; fidelity; field; fight; file; finite; fire; firewall;
      fishers; flakes; float; florida; flower; flowers; food; fool;
      foolproo; football; force; ford; foresigh; forever; form; format;
      fornicat; forsythe; fourier; foxtrot; france; frank; freak; fred;
      free; freedom; french; friday; friend; friends; frighten; frog;
      fryguy; fuck; fucker; fucking; fuckme; fuckyou; fudge; function;
      fungible; gabriel; games; gardner; garfield; gateway; gatherin; gatt;
      gauss; george; germ; gertrude; ghost; gibson; gigabyte; gina; ginger;
      girl; glacier; gold; golden; golf; golfer; good; gorgeous; gorges;
      gosling; gouge; govermen; grades; graham; grahm; grand; grant; great;
      green; group; gryphon; guardian; gucci; guess; guitar; gumption;
      guntis; hack; hacked; hagar; hair; hallowee; hamlet; hamster; handel;
      handily; handjob; happenin; hard; hardcore; harddriv; harmony; harold;
      harvey; hate; haven; hawaii; head; headbang; heat; heathen; heather;
      hebrides; heidi; heinlein; hell; hello; help; herb; herbert; hero;
      heroin; hewlett; hexadeci; hiawatha; hibernia; hidden; high; highland;
      hitler; hits; hole; holly; hollywoo; homepage; homer; homework; honey;
      hooker; hooters; horny; horrible; horror; horse; horus; host; hotdog;
      hotel; http; hunt; hunter; hutchins; hydrogen; hyper; hypertxt;
      icecream; illumina; image; imbrogli; immortal; imperial; include;
      india; indian; indiana; indians; ingres; ingress; ingrid; inna;
      innocuou; input; inside; integer; invent; irene; irishman; isis;
      jackie; jail; jane; janet; janice; janie; japan; jasmin; java; jazz;
      jean; jeanne; jeff; jenni; jennifer; jenny; jerry; jerusale; jessica;
      jester; jewelry; jill; jixian; joanne; jody; john; johndoe; johnny;
      joseph; joshua; journal; joyce; judith; judy; juggle; juicy; julia;
      julie; juliet; june; jupiter; kaka; karen; karie; karina; katana;
      kate; kathleen; kathrine; kathy; katina; katrina; kelly; keri; kermit;
      kernel; kerri; kerrie; kerry; kevin; kewl; keybord; keyin; keyword;
      kids; kill; killthem; kilo; kimberly; king; kirk; kirkland; kiss;
      kissmyas; kitten; klingon; knife; knight; knightma; known; krista;
      kristen; kristi; kristie; kristin; kristine; kristy; ladies; ladle;
      lakers; lambda; laminati; lana; laptop; lara; larkin; larry; laser;
      laura; lava; lazarus; lazer; leah; lebesgue; left; leftwing; legal;
      leland; leroy; lesbian; leslie; letmein; lewis; lexluthe; liberal;
      library; lick; licker; life; light; lightsab; lima; limbaugh; limited;
      linda; link; lion; lips; lisa; lisp; literatu; live; load; lock;
      lockout; lockword; logic; loginwor; logout; lois; lolopc; loose; lore;
      lori; lorin; lorraine; loser; louis; lovebug; lover; luck; lucus;
      lucy; lude; luke; lust; lynn; lynne; machine; macintos; mack; macro;
      maggot; magic; magnet; mail; maint; malcolm; malcom; mana; manager;
      mara; marci; marcy; maria; mariens; marietta; marijuan; marines; mark;
      markus; marni; marriage; mars; marty; marvin; mary; mason; master;
      math; maurice; meagan; megabyte; megadeth; megan; melissa; mellon;
      melrose; member; memory; menace; menu; mercury; merlin; metal;
      metalhea; metalica; mets; mice; michael; michel; michelan; michele;
      michelle; mickey; micro; microchi; micropro; microsof; midieval; mike;
      mine; minimum; minsky; misfit; mission; mkii; mode; modem; mogul;
      moguls; monday; monica; moom; moor; moose; more; morley; morris;
      mortal; mortalco; mortgage; mosaic; mountain; mouse; move; movie;
      movies; mozart; mpeg; msdos; muppets; mutant; nagel; name; nancy;
      napoleon; nasa; navy; nepenthe; neptune; ness; netscape; network;
      newborn; news; newsgrou; newton; newyork; next; nice; nicole;
      nicotine; night; nightmar; nintendo; nita; nnaacp; noble; nobody;
      node; noreen; notes; noth; nova; novel; november; noxious; nuclear;
      nude; nuke; nukem; null; number; nutritio; nuts; nyquist; obscurit;
      oceanogr; ocelot; office; okay; oldage; olivetti; olivia; omega; open;
      opening; openlock; opensesa; operator; orca; orient; orwell; oscar;
      osiris; outdoors; outlaw; output; outside; oxford; pacific; packard;
      packer; painless; paint; pakistan; pamela; papa; paper; papers;
      pascal; passphra; paste; patricia; patriot; patty; paula; peanuts;
      pecker; pencil; penelope; penguin; penis; penname; pentagon; pentagra;
      penthous; pentium; peoria; pepper; percolat; perfect; permit;
      persimmo; persona; pervert; pete; peter; phil; philip; phoenix; phone;
      photon; phrack; phrase; phreak; phuck; pick; pierre; pimp; pinname;
      piss; pizza; plane; playboy; plover; pluto; plymouth; poetry; police;
      polly; polynomi; ponderin; poop; poor; pork; porn; porno; porsche;
      post; poster; power; praise; precious; prelude; presto; prince;
      princeto; printer; priv; private; privs; proceed; processo; professo;
      profile; program; prompt; protect; protozoa; psycho; psychopa; public;
      puck; puke; pumpkin; puneet; punisher; punk; puppet; pussy; quebec;
      qwert; qwerty; rabbit; rachel; rachelle; rachmani; raid; rain;
      rainbow; raindrop; raleigh; random; rape; rascal; razor; reagan;
      reality; really; ream; reaper; rebal; rebecca; rebel; record; reddawn;
      redhead; referenc; regional; release; remote; renee; reno; rent;
      report; republic; resistan; reveal; rhino; rich; rick; riffraff;
      right; rightwin; ring; riot; ripple; risc; roach; robert; robin;
      robot; robotics; robyn; rochelle; rocheste; rock; rocky; rockyhor;
      rodent; rolex; romano; romeo; romulan; ronald; rose; rosebud;
      rosemary; roses; rough; rubber; ruben; ruby; rude; rules; running;
      rush; ruth; safe; salami; sale; salt; samantha; sample; sandra; sandy;
      sara; sarah; saturday; saturn; saxon; scamper; scheme; school;
      schoolsucks; scifi; scorpion; scott; scotty; scout; search; security;
      seed; sega; sensor; sentinel; sentry; serenity; serial; service;
      sesame; sexy; shannon; sharc; shark; sharks; sharon; sheffiel;
      sheldon; shell; sherri; shift; shirley; shit; shitpot; shiva; shivers;
      short; shuttle; sick; sierra; signatur; silver; simcity; simon;
      simple; simpsons; simulati; singer; single; site; skull; slave; slick;
      sliders; slow; slut; small; smart; smile; smiles; smooch; smother;
      smtp; smut; snach; snafu; snake; snatch; snoopy; soap; social;
      socrates; sodomy; soft; software; somebody; sondra; sonia; sonic;
      sonya; sossina; source; south; spaceshi; sparrows; spear; spell;
      spice; spider; spiderma; spit; spred; spring; springer; spunk;
      squires; sr71; stacey; staci; stacie; stacy; star; starship; start;
      startrek; startup; starwars; steak; steal; steel; steph; stephani;
      stereo; steve; stoneage; stoned; stones; strange; strangle; stratfor;
      streetfi; string; strip; student; stuttgar; subscrib; subway; success;
      suck; suckmydi; sucks; summer; sunday; superman; superson; supersta;
      superuse; supervis; support; supporte; surfer; surfing; susan;
      susanne; susie; suzanne; suzie; swearer; sweat; switch; sword; sybil;
      symmetry; sysadmin; sysop; tabasco; talk; tall; tamara; tami; tamie;
      tammy; tangerin; tango; tape; tara; target; tarragon; taylor; teacher;
      team; teapot; tears; tech; teen; teenage; telephon; telnet; temptati;
      tennis; tera; terminal; terminat; tess; tetris; text; thailand;
      theresa; thin; thursday; tiffany; tiger; time; tina; tits; toad;
      toggle; token; tokenrin; tomato; topograp; tortoise; toxic; toyota;
      traci; tracie; tracy; trails; transfer; trap; trapdoor; tree; trek;
      trisha; trivial; trojan; trombone; tron; true; truth; tubas; tuesday;
      turn; tuttle; ugly; umesh; uncle; undo; unhappy; unicorn; uniform;
      universa; universe; universi; unknown; unlock; upload; uranus; urchin;
      ursula; usenet; usermane; username; usmc; util; utility; uucp; vagina;
      valerie; vampire; vasant; venus; veronica; vertigo; vicky; victor;
      video; videogam; village; virgin; virginia; virus; visitor; visual;
      visualba; vodka; waco; ward; warez; warfare; wargames; warp; warren;
      wasp; watchwor; water; wave; webpage; wednesda; weed; weenie; well;
      wendi; wendy; werewolf; west; western; whatever; whatnot; whisky;
      white; whiting; whitney; wholesal; whore; will; william; williams;
      willie; wilma; windows; wine; wing; winston; wired; wisconsi; wiseass;
      within; wizard; wolf; wolverin; woman; wombat; women; wood; woodwind;
      word; wordperf; worf; work; worm; wormwood; wwii; wyoming; xena; xfer;
      xman; xmen; xmodem; xray; xyzzy; yaco; yang; yankee; yellow; yellowst;
      yolanda; yosemite; young; zebra; zeitgeis; ziggy; zimmerma; zmodem;
      zombie; zulu; 00000000; tester; testin; Ross; Rosco; RoscoP;
      RoscoPColtrane; lol; d00d; dudette; dud3; Al3x; Alexander; donaldduck;
      wileecoyote; windowz; windoze; windose; billy; M$; MS; WindowsXP;
      windows2k; windowsME; windows98; windows95; windozexp; windoze2k;
      windozeME; windoze98; windoze95; wh0r3; ho; wh0re; hax; haxing;
      h4x1ng; h4x0r1ng; h4x0ring; ada; albatross; alf; ama; amorphous; amy;
      andromache; ann; anthropogenic; asd; asm; atmosphere; beethoven;
      bicameral; bob; bsd; cad; campanile; cat; catherine; chemistry;
      christina; christine; commrades; cornelius; deb; desperate; discovery;
      dog; dos; edinburgh; eiderdown; elizabeth; enterprise; establish;
      extension; foolproof; foresight; fun; gnu; hal; happening; ibm;
      imbroglio; innocuous; jen; joy; key; kim; lamination; lee; liz;
      macintosh; mgr; mit; net; new; nutrition; oceanography; pad; pam;
      percolate; persimmon; polynomial; pondering; princeton; professor;
      pub; rachmaninoff; rje; rochester; sal; sheffield; signature;
      stephanie; stratford; stuttgart; sun; superstage; superuser;
      supported; sys; tangerine; telephone; temptation; topography; tty;
      wholesale; williamsburg; wisconsin; xyz; yellowstone; zap; zimmerman

It makes use of the following Exploit:
– MS06-040 (Vulnerability in Server Service)
– NetDevil backdoor (port 903)

Infection process:
Creates a TFTP script on the compromised machine in order to download the malware to the remote location.

Remote execution:
–It attempts to schedule a remote execution of the malware, on the newly infected machine. Therefore it uses the NetScheduleJobAdd function.

 IRC To deliver system information and to provide remote control it connects to the following IRC Server:

Server: 100.FelonyProductions.**********
Port: 8372
Channel: #$$$$#
Nickname: soldier
Password: og

– Furthermore it has the ability to perform actions such as:
    • connect to IRC server
    • Disable network shares
    • disconnect from IRC server
    • Download file
    • Enable network shares
    • Join IRC channel
    • Leave IRC channel
    • Perform DDoS attack
    • Perform port redirection
    • Start spreading routine
    • Updates itself

 Stealing – It uses a network sniffer that checks for the following strings:
   • :.login; :,login; :!login; :@login; :$login; :%login; :^login;
      :*login; :-login; :+login; :/login; :\login; :=login; :?login;
      :'login; :`login; :~login; : login; :.auth; :,auth; :!auth; :@auth;
      :$auth; :%auth; :^auth; :&auth; :*auth; :-auth; :+auth; :/auth;
      :\auth; :=auth; :?auth; :'auth; :`auth; :~auth; : auth;; :,id;
      :!id; :@id; :$id; :%id; :^id; :&id; :*id; :-id; :+id; :/id; :\id;
      :=id; :?id; :'id; :`id; :~id; : id; :.hashin; :!hashin; :$hashin;
      :%hashin;; :!secure; :.l; :!l; :$l; :%l; :.x; :!x; :$x; :%x;
      :.syn; :!syn; :$syn; :%syn

– A logging routine is started after keystrokes are typed that match the following string:
   • paypal

– It captures:
    • Keystrokes

– A logging routine is started after a website is visited:

– It captures:
    • Login information

 Miscellaneous Mutex:
It creates the following Mutex:
   • 7x4556326

 File details Programming language:
The malware program was written in MS Visual C++.

Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Description inserted by Ana Maria Niculescu on Thursday, November 22, 2007
Description updated by Ana Maria Niculescu on Friday, November 23, 2007

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