Trojan:Win32/Miuref!rfn (file analysis)

The Trojan:Win32/Miuref!rfn 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 Trojan:Win32/Miuref!rfn virus can do?

• Behavioural detection: Executable code extraction – unpacking
• SetUnhandledExceptionFilter detected (possible anti-debug)
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Creates RWX memory
• Possible date expiration check, exits too soon after checking local time
• Guard pages use detected – possible anti-debugging.
• Dynamic (imported) function loading detected
• Enumerates running processes
• Reads data out of its own binary image
• CAPE extracted potentially suspicious content
• Unconventionial language used in binary resources: Greek
• The binary contains an unknown PE section name indicative of packing
• Authenticode signature is invalid
• Behavioural detection: Injection (Process Hollowing)
• Executed a process and injected code into it, probably while unpacking
• Deletes its original binary from disk
• Behavioural detection: Injection (inter-process)
• Detects Bochs through the presence of a registry key
• Checks the version of Bios, possibly for anti-virtualization
• Checks the CPU name from registry, possibly for anti-virtualization
• Attempted to write directly to a physical drive
• Accessed credential storage registry keys
• Collects information to fingerprint the system
• Anomalous binary characteristics

How to determine Trojan:Win32/Miuref!rfn?

File Info:
name: E2151A8411627EA2A288.mlw
path: /opt/CAPEv2/storage/binaries/24625e658cff6564bb37fcaf2d10784dc8b1632506c44bcdea943ead12df60bb
crc32: AAF5EC04
md5: e2151a8411627ea2a288f2241735d0d0
sha1: 0d70f3bd21864d6507d6b486448dbc305d12746d
sha256: 24625e658cff6564bb37fcaf2d10784dc8b1632506c44bcdea943ead12df60bb
sha512: d978287d8f80579d600d75f870ebd1423b35dc7427452c57945c545308eb7e446cf1a2008feb950b2c2817954ecb8978df359ec3a25c177e3e13d837d7dc0568
ssdeep: 3072:VRdWKe7sIWL9HoNVJEUxVxTUpgWCW+46Q0AsJkIIVTmDd33:p/os3oNUonTUpR6Q0JJkIcy533
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T117E3BE42D6D188D3F4F748BA12A33F969A237F124B5F90E70245735E56A27CC8B73829
sha3_384: d1623dd2ba5186def157acd0bdb45338573f195c36f97e7ac3de399c8b52f43bc4c02f6addf3c43f7d6c0aafec15e7e8
ep_bytes: 558bec6aff6808384000e914160000cc
timestamp: 2015-11-02 05:12:51

Version Info:
0: [No Data]

Trojan:Win32/Miuref!rfn also known as:

How to remove Trojan:Win32/Miuref!rfn?

• 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.