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
• Creates an autorun.inf file
• Authenticode signature is invalid
• Attempts to identify installed AV products by registry key
• Checks for the presence of known devices from debuggers and forensic tools
• Checks for the presence of known devices from debuggers and forensic tools
• Detects the presence of Windows Defender AV emulator via files
• 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: 0D316613ABA9CAC6D4A2.mlw
path: /opt/CAPEv2/storage/binaries/eb17a98de2f55259a1aa95a053c1754fd77a4e45ec8078f680472c9428bcbdf4
crc32: E08CBFC6
md5: 0d316613aba9cac6d4a21e9c1edb379e
sha1: bf09a3da0bd1f4e31759f308dc05646e1cd8bc37
sha256: eb17a98de2f55259a1aa95a053c1754fd77a4e45ec8078f680472c9428bcbdf4
sha512: a55eed29c48431da8971c20701bd20368a81072468639f549087dd83c8121b805fdec0ca9f494636f238eea3676f2760fd0ce5777465612513d314678feb8c41
ssdeep: 3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJE:1xlZam+akqx6YQJXcNlEHUIQeE3mmBI5
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1074413C2A6D95AE6ECC619771A23DF841F55FE3169C60A10BA04B16F49F73C1AA13323
sha3_384: 44046f4be547aea3a193c9b666e753722134287c4ff92439721b3d6bc7b74743ed96d9caca5605e0c7fcd33b95095873
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.