Susp_Dropper (Kaspersky), Trojan.Win32.Generic!BT (VIPRE), Trojan-Proxy.Win32.Small!IK (Emsisoft), GenericIRCBot.YR (Lavasoft MAS)Behaviour: Trojan-Proxy, Trojan, IRCBot, Trojan-Proxy
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: b7abf319195ecd5b0e09d82ea9f59ae7
SHA1: 6364a5fc4b130bc6f4ba13758a1730e8ef6d3230
SHA256: ad766e4a5a36fd4da2b9e6e076f5eb4eb0ea9483253fa6d4f2a5fb58fa79c21e
SSDeep: 384:YRGhlqpkueST7y5hA/UdAia/DHqRWZOF/MSG 0pAUJRpokkIYICN3uKYqptF0F:GI4pkia52/Udna/DHi3nG 0pjJdYIOux
Size: 23552 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: Softonic
Created at: 2009-02-25 01:18:00
Analyzed on: WindowsXP SP3 32-bit
Summary: Trojan-Proxy. Trojan program, which allows the usage of user's system as a remote proxy.
Dynamic Analysis
Payload
Behaviour | Description |
---|---|
IRCBot | A bot can communicate with command and control servers via IRC channel. |
Trojan-Proxy | This program can launch a proxy server (SOCKS4) on a designated TCP port. |
Process activity
The Trojan creates the following process(es):
%original file name%.exe:1300
mdm.exe:1376
The Trojan injects its code into the following process(es):
mdm.exe:1280
File activity
The process %original file name%.exe:1300 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%System%\mdm.exe (23 bytes)
The process mdm.exe:1280 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
Registry activity
The process %original file name%.exe:1300 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "8F 3F 80 AA DA 47 77 7B 7D 7F 4C 03 1E C5 9E 07"
[HKLM\System\CurrentControlSet\Control\Lsa]
"restrictanonymous" = "1"
[HKLM\System\CurrentControlSet\Control\Session Manager]
"PendingFileRenameOperations" = "\??\c:\%original file name%.exe,"
[HKLM\SOFTWARE\Microsoft\Ole]
"EnableDCOM" = "N"
The process mdm.exe:1280 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 17 00 00 00 01 00 00 00 00 00 00 00"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
"Cookies" = "%Documents and Settings%\%current user%\Cookies"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "74 8F 86 06 23 9B 8A 43 27 D3 F8 A6 97 6F 40 09"
[HKCU\Software\Microsoft\Internet Explorer\Main]
"Start Page" = "http://www.postarticles.net"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"MigrateProxy" = "1"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"
To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Microsoft Visual Debuger" = "%System%\mdm.exe"
Proxy settings are disabled:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Microsoft Visual Debuger" = "%System%\mdm.exe"
The Trojan deletes the following value(s) in system registry:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
"ProxyServer"
"ProxyOverride"
Network activity (URLs)
No activity has been detected.
HOSTS file anomalies
No changes have been detected.
Rootkit activity
No anomalies have been detected.
Propagation
Removals
Remove it with Ad-Aware
- Click (here) to download and install Ad-Aware Free Antivirus.
- Update the definition files.
- Run a full scan of your computer.
Manual removal*
- Terminate malicious process(es) (How to End a Process With the Task Manager):
%original file name%.exe:1300
mdm.exe:1376 - Delete the original Trojan file.
- Delete or disinfect the following files created/modified by the Trojan:
%System%\mdm.exe (23 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Microsoft Visual Debuger" = "%System%\mdm.exe"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Microsoft Visual Debuger" = "%System%\mdm.exe" - Reboot the computer.