Win32/Cridex.AE (file analysis)

The Win32/Cridex.AE 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 Win32/Cridex.AE virus can do?

• SetUnhandledExceptionFilter detected (possible anti-debug)
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Creates RWX memory
• Dynamic (imported) function loading detected
• Performs HTTP requests potentially not found in PCAP.
• A process created a hidden window
• CAPE extracted potentially suspicious content
• The binary likely contains encrypted or compressed data.
• 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
• Deletes its original binary from disk
• Code injection with CreateRemoteThread in a remote process
• Tries to suspend Cuckoo threads to prevent logging of malicious activity
• Behavioural detection: Injection (inter-process)
• Behavioural detection: Injection with CreateRemoteThread in a remote process
• Tries to unhook or modify Windows functions monitored by Cuckoo
• Created a process from a suspicious location
• Behavior consistent with a dropper attempting to download the next stage.
• Installs itself for autorun at Windows startup
• Performs a large number of encryption calls using the same key possibly indicative of ransomware file encryption behavior
• Creates a hidden or system file
• Attempts to modify proxy settings

How to determine Win32/Cridex.AE?

File Info:
name: E1087A99A9C98B94019F.mlwpath: /opt/CAPEv2/storage/binaries/467c07bb54ed458535991792fc6c1c743ea9fae769137434017414c7ac44a3becrc32: 65C9E07Cmd5: e1087a99a9c98b94019fa71ffbd7e810sha1: 4dac0665fedf81e93009817423e20ca24be2dfa7sha256: 467c07bb54ed458535991792fc6c1c743ea9fae769137434017414c7ac44a3besha512: f257e0a2ded195cff91db9d874a868178d780b6dbec58eb2792bc5e4c3d0c91105ebe7824213ce2b4def13a172499b4482c556e6a4fa98114d869eab07c5fa9fssdeep: 1536:ItY+pydaGFkkfn+geYYbzkKTENLHoBMWmSrR6+uLTrnggUONwlHPQ97wLGcEUfb:ItB41rOHTENeMWzN6xrgtQ9ArEtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T125D36D077A69B931F06A2633007D4B178B2A782637334BDBBB4527745A233C54F3A766sha3_384: e0a6f3b8ca6eda6a02f9127cefeff230f680e641cf92c4dd3040db70ca37a0099b7aaf3c02908f1f1e1530ed7a6f8d7aep_bytes: e8742c0000e989feffff8bff558bec8btimestamp: 2013-04-14 08:46:49
Version Info:
0: [No Data]

Win32/Cridex.AE also known as:

How to remove Win32/Cridex.AE?

• 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.