Trojan.Win32.LOADSELL.B

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. However, as of this writing, the said sites are inaccessible.

It connects to certain websites to send and receive information. However, as of this writing, the said sites are inaccessible.

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

However, as of this writing, the said sites are inaccessible.

Installation

This Trojan adds the following processes:

• To delete itself:
  • "%System%\cmd.exe" /c taskkill /im "{Malware Filename}.exe" /f & erase "{Malware Filepath}\{Malware Filename}.exe" & exit
• If download is successful:
  • "%System%\cmd.exe" /c start /I "" "%User Temp%\{4 Random Characters}-{5 Random Characters}-{4 Random Characters}-{5 Random Characters}\{11 Random Numbers}.exe"
  • "%System%\cmd.exe" /c start /I "" "%User Temp%\{4 Random Characters}-{5 Random Characters}-{4 Random Characters}-{5 Random Characters}\{11 Random Numbers}.exe" /{mix, us, eu or depending on the country}

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It creates the following folders:

• %User Temp%\{4 Random Characters}-{5 Random Characters}-{4 Random Characters}-{5 Random Characters}\ → Hidden

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

• http://{BLOCKED}n.in/dlc/distribution.php?pub={String} → Depending on the {User Agent} used. It may receive a file or a secondary download link.
• {Received secondary download link}

It saves the files it downloads using the following names:

• %User Temp%\{4 Random Characters}-{5 Random Characters}-{4 Random Characters}-{5 Random Characters}\{11 Random Numbers}.exe

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Information Theft

This Trojan gathers the following data:

• Username
• IP Address
• Country
• Keyboard Layout/Language

Other Details

This Trojan connects to the following website to send and receive information:

• http://{BLOCKED}n.in/decision.php?pub={String}
• http://{BLOCKED}n.in/stats/remember.php?pub={String}&user={username}
• http://{BLOCKED}n.in/stats/itscis.php?pub={String}
• http://{BLOCKED}n.in/stats/statistics.php?trackid={track id}&postback={postback value}
  • Where depending on the country the infected machine is located in, {String} can be the following:
    • cainte
    • caone
    • cafour
    • cafive
    • casix
    • cashmix
    • casheu
    • cashus
    • cashtg
    • euinte
    • euone
    • eutwo
    • euthree
    • eufour
    • eufive
    • eux
    • mixinte
    • mixone
    • mixtwo
    • mixthree
    • mixfive
    • mixsix
    • mixseven
    • pmix
    • peu
    • pus
    • tgcash
    • tgone
    • tgsix
    • umix
    • ueu
    • uus
    • usinte
    • usone
    • ustwo
    • usthree
    • usfour
    • usfive
    • willmix
    • willeu
    • willus

It does the following:

• It will terminate and delete itself if it finds any of the following:
  • The following folders:
    • %User Desktop%\Garbage Cleaner
  • The following registry keys:
    • HKEY_CURRENT_USER\Software\GCleaner
  • The system's locale or language:
    • Russian
    • Ukrainian
    • Kazakh
• It connects to the following url(s) to log the Connecting Machine's IP Address:
  • http://{BLOCKED}er.org/{Characters} → Accessible
    • Where depending on the {String} used, {Characters} can be the following:
      • /11cuE
      • /11juE
      • /11QuE
      • /17bdv7
      • /17mdv7
      • /17vdv7
      • /17xdv7
      • /1B6de7
      • /1B8de7
      • /1B9de7
      • /1BaHp7
      • /1bAJM6
      • /1bPJM6
      • /1bRJM6
      • /1ecB47
      • /1evB47
      • /1exB47
      • /1KEC77
      • /1KRC77
      • /1KWC77
      • /1OPdA
      • /1OUdA
      • /1Pk497
      • /1Pv287
      • /1RGrt7
      • /1S3Jr7
      • /1SbGr7
      • /1SDGr7
      • /1SEGr7
      • /1SGGr7
      • /1SMHr7
      • /1SVGr7
      • /1SvGr7
      • /1SXGr7
      • /1SZGr7
      • /1u3ha7
      • /1Uvu47
      • /1xA9f7
      • /1xF9f7

However, as of this writing, the said sites are inaccessible.