What is “Backdoor:Win32/Qakbot”?

The Backdoor:Win32/Qakbot 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 Backdoor:Win32/Qakbot virus can do?

• Executable code extraction
• Injection (inter-process)
• Injection (Process Hollowing)
• Compression (or decompression)
• Injection with CreateRemoteThread in a remote process
• Creates RWX memory
• Mimics the system’s user agent string for its own requests
• A process attempted to delay the analysis task.
• A process created a hidden window
• Drops a binary and executes it
• The binary likely contains encrypted or compressed data.
• A scripting utility was executed
• Uses Windows utilities for basic functionality
• Tries to suspend Cuckoo threads to prevent logging of malicious activity
• Executed a process and injected code into it, probably while unpacking
• Code injection with CreateRemoteThread in a remote process
• Tries to unhook or modify Windows functions monitored by Cuckoo
• A system process is generating network traffic likely as a result of process injection
• Installs itself for autorun at Windows startup
• Collects information about installed applications
• Exhibits behavior characteristics of Vawtrak / Neverquest malware.
• Attempts to modify proxy settings
• Creates a copy of itself
• Harvests information related to installed mail clients
• Created a service that was not started
• Collects information to fingerprint the system
• Clears web history
• Uses suspicious command line tools or Windows utilities

How to determine Backdoor:Win32/Qakbot?

File Info:
crc32: 885CFB80
md5: b9ac9c68df4f115c7c0ffee6c1f8b0eb
name: B9AC9C68DF4F115C7C0FFEE6C1F8B0EB.mlw
sha1: e3d3ceb1123e7972b81c5b408f490d38058c6798
sha256: dd6b5c8e7a4619dc5f339e3193eddb09ef573f26d0b40ad23899eb83c5f86aa9
sha512: 75f5a164484e5e46d2bda5a3c734a0b99bffc9520f84d4d9c2689929762360945e0bcf92721873be51f4655f1360bd2f1f45d72f6c1b8f827c7f17e349902bf8
ssdeep: 6144:SApl5Sdx3aM+346mvxD/TytAtzHYWuCFiLfbCQOVXA/0M:KqVzIxD/+tu/uCAnYQ/L
type: PE32 executable (console) Intel 80386, for MS Windows

Version Info:
0: [No Data]

Backdoor:Win32/Qakbot also known as:

How to remove Backdoor:Win32/Qakbot?

• 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.