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: FCC6678C12EDC4B71C47.mlw
path: /opt/CAPEv2/storage/binaries/d492298793a2d315efb4075a71c2288fdd4169d56533284cf71b80ad3e7c1fcd
crc32: 73E63BF9
md5: fcc6678c12edc4b71c475fd05fd25757
sha1: c79ae45fbb3067648d9ec0ac1d1484664fd0d0a1
sha256: d492298793a2d315efb4075a71c2288fdd4169d56533284cf71b80ad3e7c1fcd
sha512: 74d342f7094c6f17075da6a8fba672170cf5385edc4cd3d6d3cd4bfb785639f8cfbd839ed4ae24b92286d0822f384b0563a9f6a87dacb804c2c8d7ab69b56fdb
ssdeep: 3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJu:1xlZam+akqx6YQJXcNlEHUIQeE3mmBI7
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1B64413C2A6D95AE6ECC619771A23DFC41F55FE3169C60A10BA44B16F49F73C0AA13323
sha3_384: c765b2c5b8722c7540798f51be034e482aaa887947074502a6440d795303a1791299df3d43a59e37097590312c82be7e
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.