About “Win32/RiskWare.DYAMAR.B” infection

The Win32/RiskWare.DYAMAR.B 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/RiskWare.DYAMAR.B virus can do?

• Executable code extraction
• Creates RWX memory
• Expresses interest in specific running processes
• Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
• Unconventionial binary language: Chinese (Simplified)
• Unconventionial language used in binary resources: Chinese (Simplified)
• The binary likely contains encrypted or compressed data.
• The executable is compressed using UPX
• Deletes its original binary from disk
• Sniffs keystrokes
• Checks for the presence of known devices from debuggers and forensic tools
• Creates a copy of itself
• Attempts to interact with an Alternate Data Stream (ADS)
• Anomalous binary characteristics

How to determine Win32/RiskWare.DYAMAR.B?

File Info:
crc32: 0D097804md5: 79583b295398100bc02a0a4c6ec37943name: 79583B295398100BC02A0A4C6EC37943.mlwsha1: be73a9c7b22270ad82ee8ecc36156d9af1725f21sha256: e11b9b4440e110db84edae190fcf3893bfc78200a8a103b4263e768b4b86fd9csha512: 2c00ab866bda9b2109b8081901fd137f91749265d7c6031718e2c32fd914363e3d5c1e4100c917055c1814a4a8f90b16e9263b3cd602a3f77b50b9771294c210ssdeep: 12288:xIRcLQX7kZPswhPXMB1edacosQdn+OnYaak4c9:2yS70Psw2LcacosQt+OLotype: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed
Version Info:
LegalCopyright: x7248x6743x6240x6709(C) 2020InternalName: loaderFileVersion: 1, 0, 0, 1CompanyName: yidaPrivateBuild: LegalTrademarks: Comments: ProductName: yida loaderSpecialBuild: ProductVersion: 1, 0, 0, 1FileDescription: loaderOriginalFilename: loader.datTranslation: 0x0804 0x04b0

Win32/RiskWare.DYAMAR.B also known as:

How to remove Win32/RiskWare.DYAMAR.B?

• 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.