About “CNav (PUA)” infection

The CNav (PUA) 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 CNav (PUA) virus can do?

• Sample contains Overlay data
• Presents an Authenticode digital signature
• Drops a binary and executes it
• Unconventionial binary language: Chinese (Simplified)
• Unconventionial language used in binary resources: Chinese (Simplified)
• The binary contains an unknown PE section name indicative of packing
• Executable file is packed/obfuscated with ASPack
• The binary likely contains encrypted or compressed data.
• Authenticode signature is invalid
• CAPE detected the shellcode get eip malware family
• Binary file triggered YARA rule
• Attempts to create or modify a Browser Helper Object
• Anomalous binary characteristics
• Yara detections observed in process dumps, payloads or dropped files

How to determine CNav (PUA)?

File Info:
name: 592649AAA21A7879699D.mlw
path: /opt/CAPEv2/storage/binaries/7c6417e59b41851432692e936721ad077f485086e6f4c6d314700a7804243fce
crc32: 99172864
md5: 592649aaa21a7879699d46203add82c3
sha1: e4a6bbc5c0933c3fe97127c0efc08051dfb9180d
sha256: 7c6417e59b41851432692e936721ad077f485086e6f4c6d314700a7804243fce
sha512: aa9e5d9508aece70758a293927170ea5bdb54427da0409b4237718cad87850d6cdc817ec775f3b1e66a7d600dd8c02a22909f135ab8ac4cf6603073d07c972f6
ssdeep: 6144:EuqehfE+izjGopZRkzlJkf4rONjs8St1axXeoJvz8mOiSE0kReTFP:EShzizSohkfkf4Es8St12p8RiS6eB
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T15E8423D459726023CCE3627045DBC019297EA634EB8AC5CB29344D6EBCA1F116EEF397
sha3_384: b4e1495de4e57adb35897c2bfa742c65843615f3b90563e8356bd8abf73b29180c3ddcbefd49706389c34b84ce022111
ep_bytes: 60e803000000e9eb045d4555c3e80100
timestamp: 2007-07-16 05:27:24

Version Info:
Comments: 
CompanyName: 中国互联网络信息中心
FileDescription: 国际化域名支持
FileVersion: 2, 6, 0, 1
InternalName: 
LegalCopyright: Copyright CNNIC 2006 - 2007
LegalTrademarks: 
OriginalFilename: setup.exe
PrivateBuild: 
ProductName: 
ProductVersion: 2, 6, 0, 1
SpecialBuild: 
Translation: 0x0804 0x04b0

CNav (PUA) also known as:

How to remove CNav (PUA)?

• 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.