What is “Worm:Win32/Yuner.A”?

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?

• A file was accessed within the Public folder.
• Sample contains Overlay data
• Uses Windows utilities for basic functionality
• 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: 9BFE42EEC5B36B658B76.mlw
path: /opt/CAPEv2/storage/binaries/3a95cc55cbd2b3167287ca9c914f6f811ad0a6590322bf9f8dd4a061e86e5743
crc32: 2AA8AF0C
md5: 9bfe42eec5b36b658b7618e4e32e0003
sha1: 8691605561910fc1f05963d238434c60b8ff41e4
sha256: 3a95cc55cbd2b3167287ca9c914f6f811ad0a6590322bf9f8dd4a061e86e5743
sha512: 00546cf77fb087cab11068075580f39f6c6991f558387a586dc9c0268287ba41a01503d6047ea3f6a8d7f4b4ec3d7e32b60bd5a125828e355bb93e923ead54b6
ssdeep: 3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJ0:1xlZam+akqx6YQJXcNlEHUIQeE3mmBI9
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T13C4413C2A6D95AE5FCC619771A23DF841F56FE3169C60A10BA44B16F49F7380AA13323
sha3_384: f7e086b86f21f0ddaca6abae43efdaef1f045cf0182c088e46bb1a49d2b251b280b033ec8d046c0ae8323e9670847451
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.