About “PUA:Win32/ChangeYou” infection

The PUA:Win32/ChangeYou 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 PUA:Win32/ChangeYou virus can do?

• Sample contains Overlay data
• Presents an Authenticode digital signature
• Performs HTTP requests potentially not found in PCAP.
• Unconventionial binary language: Chinese (Simplified)
• Unconventionial language used in binary resources: Chinese (Simplified)
• The binary likely contains encrypted or compressed data.
• Authenticode signature is invalid
• CAPE detected the embedded pe malware family
• Attempts to modify proxy settings
• Touches a file containing cookies, possibly for information gathering
• Anomalous binary characteristics
• Yara detections observed in process dumps, payloads or dropped files

How to determine PUA:Win32/ChangeYou?

File Info:
name: D3572A525B077B4CEE50.mlwpath: /opt/CAPEv2/storage/binaries/c0a072930a43828d5e7157a7f9826dd5c0917cff225843cd9be8de1648297b65crc32: 8A9C686Cmd5: d3572a525b077b4cee505bb089647b66sha1: c083904b7d779a18b8ff09c9c92359ec39e94dd7sha256: c0a072930a43828d5e7157a7f9826dd5c0917cff225843cd9be8de1648297b65sha512: a5813e45313aa74dda20cf4308be1774810ca989b657dac4b9c360f839f2df4ccd392c0f0949aedebce3d3981873f256b3bc8eccacafd8217b9b9c615a80c9a1ssdeep: 196608:jv9xvL3nojHFRO0jC10liiGYcMPooP3BWeKNvLZqTL:DYHCqUAdF1KNvstype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T106B623933380A4F2D8D14AF99B6D55324A61BC10CA914B5A33DC7F9C3776394B13EA2Bsha3_384: e927dc6daaa8d572fab32473c2390f2a00fb0c001d018c1177196ea3cbdbd0112ed96b8d65d5ddf6d3037a0e4ee03c3cep_bytes: 6a6068803a4400e83ee4ffffbf940000timestamp: 2010-11-24 11:16:59
Version Info:
Comments: pwdcardCompanyName: Changyou.com LimitedFileDescription: CyouSafe PasswordCardFileVersion: 1.0.0.1InternalName: pwdcard.exeLegalCopyright: (C) 2008-2010 Changyou.com Limited. All Rights Reserved.ProductName: pwdcardProductVersion: 1.0.0.1Translation: 0x0804 0x03a8

PUA:Win32/ChangeYou also known as:

How to remove PUA:Win32/ChangeYou?

• 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.