About “Trojan:Win32/Stoberox.B” infection

The Trojan:Win32/Stoberox.B is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

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What Trojan:Win32/Stoberox.B virus can do?

• Injection (inter-process)
• Injection (Process Hollowing)
• Injection with CreateRemoteThread in a remote process
• Creates RWX memory
• Starts servers listening on 0.0.0.0:3700, 0.0.0.0:8373
• Drops a binary and executes it
• Unconventionial language used in binary resources: Syriac
• The binary likely contains encrypted or compressed data.
• Uses Windows utilities for basic functionality
• Executed a process and injected code into it, probably while unpacking
• Code injection with CreateRemoteThread in a remote process
• Attempts to remove evidence of file being downloaded from the Internet
• A process attempted to delay the analysis task by a long amount of time.
• Attempts to repeatedly call a single API many times in order to delay analysis time
• Mimics the file times of a Windows system file
• Creates a hidden or system file
• Operates on local firewall’s policies and settings
• Anomalous binary characteristics

How to determine Trojan:Win32/Stoberox.B?

File Info:
crc32: 5C1FFCE6
md5: 84d9595292523984220f61c3be37fc80
name: 84D9595292523984220F61C3BE37FC80.mlw
sha1: c5e2642b2c628940db8e80da0b50652af2982598
sha256: bf9e21764aca7786311da5655fc2b9bc4ae64cf5a4ef0a743e6b3854cbf95fc6
sha512: 44488003ec057613893efc07ccfaa09d0439de4263e737eddafc2cb1b4fc1c0d06ca66cae7a18320c55130d120b0e948a9b119bd6506492b3add8fd8d9e78ca5
ssdeep: 3072:NCBaEANS2A0YtlRmuFIAwP1pesuMN9i3:NaaEAK0YtThQ3J9
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:
LegalCopyright: Copyright xa9 1997-2011 Simon Tatham.
InternalName: PuTTY
FileVersion: Release 0.62
CompanyName: Simon Tatham
ProductName: PuTTY suite
ProductVersion: Release 0.62
FileDescription: SSH, Telnet and Rlogin client
OriginalFilename: PuTTY
Translation: 0x0809 0x04b0

Trojan:Win32/Stoberox.B also known as:

How to remove Trojan:Win32/Stoberox.B?

• Download and install GridinSoft Anti-Malware.
• Open GridinSoft Anti-Malware and perform a “Standard scan“.
• “Move to quarantine” all items.
• Open “Tools” tab – Press “Reset Browser Settings“.
• Select proper browser and options – Click “Reset”.
• Restart your computer.