TR/Breplibot.K - Trojan

See also

Summary

Full description

Statistics

Virus:	TR/Breplibot.K
Date discovered:	31/01/2006
Type:	Trojan
In the wild:	Yes
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Medium
Static file:	Yes
File size:	10.752 Bytes
MD5 checksum:	1b9107fe3a2d3c35b0853f6b3eff611f
VDF version:	6.33.00.176 - Tue, 31 Jan 2006 15:35 (GMT+1)

General Method of propagation:
   • No own spreading routine

It was previously detected as:
   • Worm/Breplibot.K

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

Side effects:
   • Disable security applications
   • Lowers security settings
   • Registry modification
   • Third party control

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

It deletes the initially executed copy of itself.

The following files are created:

– Temporary files that might be deleted afterwards:
   • %TEMPDIR%\%three-digit random character string%.bat
   • %TEMPDIR%\%three-digit random character string%.bat

Registry The following registry keys are added in order to run the processes after reboot:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
• WindowsProtocolLog = lsadst.exe

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
• WindowsProtocolLog = lsadst.exe

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

Server: 161.6.23.**********
Port: 8080
Channel: #tue
Nickname: [0000-XP]%random character string%

– This malware has the ability to collect and send the following information:
    • Malware uptime

– Furthermore it has the ability to perform actions such as:
    • Execute file
    • Terminate malware

Process termination List of processes that are terminated:
   • mcvsshld.exe; kpf4gui.exe; kpf4ss.exe; SymWSC.exe; SAVSCAN.EXE;
      SNDSrvc.exe; ccEvtMgr.exe; ccApp.exe; nmain.exe; NAVW32.exe;
      mcvsrte.exe; TeaTimer.exe; MRT.exe; Ad-watch.exe; gcasServ.exe;
      gcasDTServ.exe; mcupdate.exe; mcshield.exe

Miscellaneous Mutex:
It creates the following Mutex:
• lsadst.exe

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

See a brief description here.

Description inserted by Andrei Gherman on Tue, 31 Jan 2006 17:31 (GMT+1)
Description updated by Andrei Gherman on Mon, 13 Feb 2006 15:33 (GMT+1)

» About Malware
» About Phishing
» Viruses In the Wild

« back