TR/Click.Small.HR - Trojan

See also

Summary

Full description

Statistics

Virus:	TR/Click.Small.HR
Date discovered:	23/08/2005
Type:	Trojan
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Low to medium
Static file:	Yes
File size:	20.480 Bytes
MD5 checksum:	aab0b0d92b441763d45cff47c9224bcb
VDF version:	6.31.1.140

General Method of propagation:
   • No own spreading routine

Aliases:
   • Symantec: PWSteal.Lemir
   • Kaspersky: Trojan-Clicker.Win32.Small.hr
   • Panda: Trj/Agent.AIA
   • Bitdefender: Trojan.Clicker.Small.HR

Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows 2000
   • Windows XP

Side effects:
   • Disable security applications
   • Registry modification

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

It deletes the initially executed copy of itself.

The following file is created:

– %WINDIR%\deleteme.bat Furthermore it gets executed after it was fully created. This batch file is used to delete a file.

Registry The following registry key is added in order to run the process after reboot:

– HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   • "Microsoft"="%SYSDIR%\iexplore.exe"

The values of the following registry keys are removed:

– HKLM\SoftWare\Microsoft\Windows\CurrentVersion\Run
   • RavMon
   • KAVPersonal50
   • RavTimer
   • KvMonXP
   • iDuba Personal FireWall
   • KAVRun
   • KpopMon
   • Kulansyn
   • KavPFW
   • KvXP
   • ccApp
   • SSC_UserPrompt
   • NAV CfgWiz
   • MCAgentExe
   • McRegWiz
   • MCUpdateExe
   • MSKAGENTEXE
   • MSKDetectorExe
   • VirusScan Online
   • VSOCheckTask
   • McAfeeUpdaterUI
   • Network Associates Error Reporting Service
   • ShStatEXE
   • KavStart
   • Services
   • KWatch9x

– HKCU\SoftWare\Microsoft\Windows\CurrentVersion\Run
   • iDuba Personal FireWall
   • KavPFW
   • KvXP

The following registry keys are added:

– HKLM\SYSTEM\CurrentControlSet\Services\RsRavMon
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\RsCCenter
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\kavsvc
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\KVSrvXP
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\wscsvc
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\SNDSrvc
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\ccProxy
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\ccEvtMgr
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\ccSetMgr
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\SPBBCSvc
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\Symantec Core LC
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\navapsvc
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\NPFMntor
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\MskService
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\FireSvc
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\McShield
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\McTaskManager
   • Start=dword:00000004

– HKLM\SYSTEM\CurrentControlSet\Services\McAfeeFramework
   • Start=dword:00000004

Process termination List of processes that are terminated:
   • CCAPP.EXE; EGHOST.EXE; explor.exe; FireTray.exe; Iparmor.exe;
      KATMain.EX; KAV32.EXE; KAVPFW.EXE; KAVPLUS.EXE; KAVStart.exe;
      KmailMon.EXE; KPOPMON.EXE; KRegEx.exe; KVCENTER.KXP; KvDetech.exe;
      KVFW.EXE; KVMonXP.KXP; KVOL.exe; kvolself.exe; KVXP.KXP; KWatch9x.exe;
      KWATCHUI.EXE; MAILMON.EXE; MCAGENT.EXE; MCVSESCN.EXE; MSKAGENT.EXE;
      RAV.EXE; RAVMON.EXE; RAVTIMER.EXE; SHSTAT.EXE; SOFTOK.EXE; TBMon.exe;
      TrojanDetector.EXE; TrojDie.kxp; UpdaterUI.exe; windox.exe

Processes with the following characteristics are terminated:
    • Title: Symantec AntiVirus     Class name: KV2004
    • Title: RavMon.exe     Class name: RavMonClass
    • Title: ZoneAlarm     Class name: ZAFrameWnd
    • Title: %double-byte-characters%     Class name: Tapplication
    • Title: %double-byte-characters%     Class name: TForm1
    • Title: %random%     Class name: TfLockDownMain
    • Title: %random%     Class name: KvXP_ExpertFrame
    • Title: %random%     Class name: WHXMDI0

List of services that are disabled:
   • ccEvtMgr; ccProxy; ccSetMgr; FireSvc; kavsvc; KPfwSvc; KVSrvXP;
      KWatchSvc; McAfeeFramework; McShield; McTaskManager; MskService;
      navapsvc; NPFMntor; RsCCenter; RsRavMon; SNDSrvc; SPBBCSvc; Symantec
      Core LC; wscsvc

File details Programming language:
The malware program was written in Delphi.

Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with the following runtime packer:
• UPX

See a brief description here.

Description inserted by Irina Boldea on Tue, 23 Aug 2005 09:15 (GMT+1)
Description updated by Irina Boldea on Mon, 29 Aug 2005 08:34 (GMT+1)

» About Malware
» About Phishing
» Viruses In the Wild

« back