PowerShell/Rozena.AF information

The PowerShell/Rozena.AF 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 PowerShell/Rozena.AF virus can do?

• SetUnhandledExceptionFilter detected (possible anti-debug)
• Behavioural detection: Executable code extraction – unpacking
• Creates RWX memory
• Guard pages use detected – possible anti-debugging.
• Dynamic (imported) function loading detected
• CAPE extracted potentially suspicious content
• Executed a very long command line or script command which may be indicative of chained commands or obfuscation
• The binary contains an unknown PE section name indicative of packing
• The binary likely contains encrypted or compressed data.
• The executable is compressed using UPX
• Authenticode signature is invalid
• A scripting utility was executed
• Uses Windows utilities for basic functionality
• Collects and encrypts information about the computer likely to send to C2 server
• Creates a hidden or system file
• A script or command line contains a long continuous string indicative of obfuscation
• Attempts to execute suspicious powershell command arguments

How to determine PowerShell/Rozena.AF?

File Info:
name: 33C796F0579CB851AF80.mlw
path: /opt/CAPEv2/storage/binaries/df3ae68f39a23e9360d3bbb2333b2972d6dadfd397e8f22c0d517783b279cc16
crc32: A452D9CC
md5: 33c796f0579cb851af80a688177c6c39
sha1: 42894e23fc19fa1fa8136f52386dcc25cf00564d
sha256: df3ae68f39a23e9360d3bbb2333b2972d6dadfd397e8f22c0d517783b279cc16
sha512: f395f3b9bb61ecc59bcc6c1d4869b092e5d733005eceb412b34e8cd6bd48f6d480b353a4160398fbe06e96064cdeff3ba6f98cfa459d836c63d224ba6206fbfc
ssdeep: 768:JM/wzw8zBldNDVUfiWJqTBCMQlYNwv280MFu1APadZKMdVnbcuyD7Uu:QMXLDV6QCMkYa+DMFu1AyXNVnouy8
type: PE32 executable (console) Intel 80386, for MS Windows
tlsh: T11C03F1A5F0C79299C03A03BF9DAE07965328823FC5D5173A6AD1C477D514FBDAC28B82
sha3_384: df773f410fad04159d7f655cf2c3fae73368b596375073c256c01a2146cf7c26c660d9fe789cf62784ae1bb8f21e92e3
ep_bytes: 60be15e040008dbeeb2fffff5789e58d
timestamp: 2016-05-27 14:05:09

Version Info:
0: [No Data]

PowerShell/Rozena.AF also known as:

How to remove PowerShell/Rozena.AF?

• 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.