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.

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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
• 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.
• 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: EB29C8AC2EEA96D0F30A.mlw
path: /opt/CAPEv2/storage/binaries/7b8c7ad34b83acfaa0efce582b4480fbd51d70876c6823a5f760c2e94c3e55d2
crc32: 2B1956DF
md5: eb29c8ac2eea96d0f30a909f8e43b0fe
sha1: 3ffa017453eccded8a07573d2515e5e814f54061
sha256: 7b8c7ad34b83acfaa0efce582b4480fbd51d70876c6823a5f760c2e94c3e55d2
sha512: 04e33be75f4509176e74cf3721711ad1ea491541113cd7bce3750c43b75bc6964f9775655fa05ee53873a1fcf330ad4e50cc7ab3288de05d61b8d6a01ba5a9b2
ssdeep: 3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJu:1xlZam+akqx6YQJXcNlEHUIQeE3mmBI/
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T12F4412C2A6D95AE6ECC619771A23DF841F55FE3169C60A10BA04B16F49F73C1AA13323
sha3_384: 9b389b2fc0c346a8eb7fe01621f06eaf4efd3333fac143035d8e7e841cd126d7e3ec06a06615bf5339003de28c8f6d49
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.