About “Worm:Win32/Yuner.A” infection

The Worm:Win32/Yuner.A 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 Worm:Win32/Yuner.A virus can do?

• Sample contains Overlay data
• Reads data out of its own binary image
• Drops a binary and executes it
• 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
• Attempts to identify installed AV products by registry key
• Attempts to disable System Restore
• Attempts to disable Windows File Protection aka System File Checker.
• Touches a file containing cookies, possibly for information gathering
• Attempts to modify or disable Security Center warnings
• Attempts to modify Explorer settings to prevent file extensions from being displayed
• Attempts to modify Explorer settings to prevent hidden files from being displayed
• Yara detections observed in process dumps, payloads or dropped files

How to determine Worm:Win32/Yuner.A?

File Info:
name: 7884D38DBB73BA6656C5.mlw
path: /opt/CAPEv2/storage/binaries/e6b85a9aedd77d40460fd8c2f01ad4eddc7065518d80aeebc6b438416b9aff8f
crc32: 4FC334D4
md5: 7884d38dbb73ba6656c541efd2fef088
sha1: 775e6209a47a1280c83dcfc0719d8b63a28345e1
sha256: e6b85a9aedd77d40460fd8c2f01ad4eddc7065518d80aeebc6b438416b9aff8f
sha512: 3e5bddb9efb0c75310899668903b919555fe475eb844e71815417f361385f575684b33f96bd2f2f30056de21161ab6830868c459fd48adc977bb46ce0ac6627c
ssdeep: 3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJK:1xlZam+akqx6YQJXcNlEHUIQeE3mmBI5
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T19C4413C2A6D95AE6FCC619771A23DF841F55FE3169C60A10BA04B16F49F73C1AA13323
sha3_384: ac76f256959dd33508f4338fc92099382193a5bfd9fb01f803e7c67538870469209ed349316f45ed0717fb6742610124
ep_bytes: 60be002046008dbe00f0f9ff57eb0b90
timestamp: 2007-09-10 14:57:50

Version Info:
FileDescription: 
Virus.Name.: ., ., ., .
Nuyer.........: ...... .. ...... : ., ., ., .
Translation: 0x0809 0x04b0

Worm:Win32/Yuner.A also known as:

How to remove Worm:Win32/Yuner.A?

• 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.