About “Sirefef.3708” infection

The Sirefef.3708 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.

What Sirefef.3708 virus can do?

• Behavioural detection: Executable code extraction – unpacking
• SetUnhandledExceptionFilter detected (possible anti-debug)
• At least one process apparently crashed during execution
• Attempts to connect to a dead IP:Port (1 unique times)
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Creates RWX memory
• Guard pages use detected – possible anti-debugging.
• A process attempted to delay the analysis task.
• Dynamic (imported) function loading detected
• Enumerates running processes
• Expresses interest in specific running processes
• Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
• Reads data out of its own binary image
• A process created a hidden window
• CAPE extracted potentially suspicious content
• The binary contains an unknown PE section name indicative of packing
• The binary likely contains encrypted or compressed data.
• Uses Windows utilities to enumerate running processes
• Authenticode signature is invalid
• Uses Windows utilities for basic functionality
• Behavioural detection: Injection (Process Hollowing)
• Executed a process and injected code into it, probably while unpacking
• Behavioural detection: Injection (inter-process)
• Installs itself for autorun at Windows startup
• Detects Bochs through the presence of a registry key
• Attempts to disable Windows Auto Updates
• Collects information to fingerprint the system
• Anomalous binary characteristics
• Attempts to modify Explorer settings to prevent hidden files from being displayed
• Uses suspicious command line tools or Windows utilities

How to determine Sirefef.3708?

File Info:
name: 1380F097686EE67B40AB.mlwpath: /opt/CAPEv2/storage/binaries/d43df3483d3b81424eaad2b6c179da9b91600daeffb11190592a9e65def03474crc32: BFA932DDmd5: 1380f097686ee67b40ab7a2a66bd17desha1: 0972ab84bee0296efebd5f8b051153aae4cb3d75sha256: d43df3483d3b81424eaad2b6c179da9b91600daeffb11190592a9e65def03474sha512: 2f6f59c180a2ae0493390dd09f8bb46c15b0e2ad27f1d7983533d3d48d2de58fc3d669a3aad2cb5b81427ba11225fd623fd1be5cc7729f16c7059c176b982a7assdeep: 12288:/ClephVMo7IYJAB++2RrxRAjbeNC2v+clES+vYOqH:6OhKpYyB/MrxRAZMES+b+type: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1CEE42203BB6CEA21C0C0DAB10A9692E1B236BCC612C1BD477682FF896D757537DE4617sha3_384: 5310666f59c693e1656dafe985227da729dc8063c2522e2b7c9360b4ee010559d026f853e1ee82f10153a593127114cfep_bytes: 68b8184000e8f0ffffff000040000000timestamp: 2012-01-15 19:08:29
Version Info:
0: [No Data]

Sirefef.3708 also known as:

How to remove Sirefef.3708?

• 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.