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.

Gridinsoft Anti-Malware

Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.

DOWNLOAD NOW

6-day free trial available.

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
• 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: 24770A30D805D655B22A.mlw
path: /opt/CAPEv2/storage/binaries/99baa90544ffbe65ac18037ec44df6056834358164ab502951b64304f4cf1c05
crc32: 1D5DE492
md5: 24770a30d805d655b22ac8c7435edf15
sha1: 2ede1056df7f169deb185669a493ba9823f18603
sha256: 99baa90544ffbe65ac18037ec44df6056834358164ab502951b64304f4cf1c05
sha512: 50d9bfc3fd8be8aa5798bd9f321138dd70847be29a7c35d07dbeb6c1bb009850829b0ac9c38aca19c856d6b5c5b7524bda9356e8c7af810bb0694bb8a0cb3fa2
ssdeep: 3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJC:1xlZam+akqx6YQJXcNlEHUIQeE3mmBIR
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1354413C2A6D95EE6ECC619771A23DF841F55FE3169C60A10BA04B16F49F73C1AA13323
sha3_384: 012d9ca88b020f8433f5cb1ae47c13044e1d98ebc68de56c5670a62852329b99fac5c141e9830f13e4813ba26c09b10c
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.