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
• 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
• 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: 76CB7F5887EC477BC051.mlw
path: /opt/CAPEv2/storage/binaries/7434cb591de425ad965458fefeed2e8b7a84b3f51ac33e46b4717fcd056f6b0c
crc32: C063811F
md5: 76cb7f5887ec477bc05158c1b97d23c9
sha1: a060eee26d3b3d836be0bf063eaf4854bc4cd6df
sha256: 7434cb591de425ad965458fefeed2e8b7a84b3f51ac33e46b4717fcd056f6b0c
sha512: 7e4f3251033f21794a26a797ddbdbfbb97519e9e9e6efc08a0d947a8f8c1a1377ebac7b8be913ce513da14725c4fe20dff9570743eec979b308353173070eec3
ssdeep: 3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJ7:1xlZam+akqx6YQJXcNlEHUIQeE3mmBI0
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T15D4413C2A6D95AE5ECC619771A23DFC41F56FE3169C60A10BA04B16F49F73C1AA13323
sha3_384: 68835212671f13cc417c88458cd26b7d984f37a4692cee6d997f8a0599632a20cf8687da84f4b0f83aad0286f5a3d3d2
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.