Should I remove “Backdoor:Win32/Caphaw.A”?

The Backdoor:Win32/Caphaw.A 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 Backdoor:Win32/Caphaw.A virus can do?

• Behavioural detection: Executable code extraction – unpacking
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Creates RWX memory
• Checks adapter addresses which can be used to detect virtual network interfaces
• Possible date expiration check, exits too soon after checking local time
• Dynamic (imported) function loading detected
• At least one IP Address, Domain, or File Name was found in a crypto call
• Performs HTTP requests potentially not found in PCAP.
• 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
• Unconventionial binary language: Russian
• Unconventionial language used in binary resources: Russian
• The binary contains an unknown PE section name indicative of packing
• Authenticode signature is invalid
• Behavioural detection: Injection (Process Hollowing)
• Executed a process and injected code into it, probably while unpacking
• Deletes its original binary from disk
• Code injection with CreateRemoteThread in a remote process
• Behavioural detection: Injection (inter-process)
• Behavioural detection: Injection with CreateRemoteThread in a remote process
• Installs itself for autorun at Windows startup
• Collects information about installed applications
• Checks the CPU name from registry, possibly for anti-virtualization
• Attempts to modify proxy settings
• Attempts to modify browser security settings
• Creates a copy of itself
• Attempts to disable browser security warnings
• Harvests cookies for information gathering

How to determine Backdoor:Win32/Caphaw.A?

File Info:
name: 34A7B858F441C0ABF45B.mlwpath: /opt/CAPEv2/storage/binaries/f7bc471ce650f380f7a66b2bcbd53c269dde5e682bdb37e3c2b55969c08bd761crc32: D97365EAmd5: 34a7b858f441c0abf45ba4cabd499744sha1: 4bcd5b717292b43072402821e3e7dc6785c44840sha256: f7bc471ce650f380f7a66b2bcbd53c269dde5e682bdb37e3c2b55969c08bd761sha512: f94f8f34b3563340d815d637e9620bc0520320cac789f8fa5e820fc22df37c40c217bf394b638778c517a5734b900b5b6e965cd0fefbb135f3f76975859a6b7bssdeep: 6144:5KcTK1n32fTTjkCB9Nw3xZv0puddnUtW3:5KcTS3cP4CBY3vv0cctype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T115740211FA48DA36CCDCF1B8307385412B371998167444A35FF4D5BAA9323E2DA76B2Esha3_384: eed7527be1dfc0849d4bab083da5b4d9d98c2881d349ce1a97a63243b379d254fbb5b668d67bab457b0a04d452adce13ep_bytes: 6a6068f8064500e808180000bf940000timestamp: 2013-02-15 08:50:31
Version Info:
Translation: 0x0419 0x04b0

Backdoor:Win32/Caphaw.A also known as:

How to remove Backdoor:Win32/Caphaw.A?

• 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.