Categories: Malware

Ursu.882131 removal guide

The Ursu.882131 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 Ursu.882131 virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Executed a command line with /C or /R argument to terminate command shell on completion which can be used to hide execution
  • Creates RWX memory
  • Guard pages use detected – possible anti-debugging.
  • Dynamic (imported) function loading detected
  • A process created a hidden window
  • CAPE extracted potentially suspicious content
  • Executed a very long command line or script command which may be indicative of chained commands or obfuscation
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Uses Windows utilities for basic functionality
  • A script or command line contains a long continuous string indicative of obfuscation

How to determine Ursu.882131?


File Info:

name: 3FA4999E7A3721F19FAB.mlwpath: /opt/CAPEv2/storage/binaries/fae5c91bac0cdfaa69066ee7d2ee4e688a445c9f4d21aae3405cd93d4da3f853crc32: 13244D4Dmd5: 3fa4999e7a3721f19fabba0f35c24234sha1: f784a7200af83ce5f94caea3b4844415ea9855f7sha256: fae5c91bac0cdfaa69066ee7d2ee4e688a445c9f4d21aae3405cd93d4da3f853sha512: f5c9af5a6b7d4027dd3a89367abd69734b2fd16fee865e428b93358e8645c7fe74d704515f9fec5c79bc7d73a03458fc0f849ab2afd036c1bcc5fe9309bf4d8essdeep: 49152:8AAwJcs23fzGi7zx1O+ELb7VVg5tQ7alr516:cWcsYLGiDO+Ejbg56I6type: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1B9C5BE10B38A8471E62330F21866A25018A77D5849B5F64F2DB9762C1AB2353DC7FF6Fsha3_384: 2572320e772006c8faefdae9419329d616c7daea2e30c8b4f1d7b539fe170921b7491bdb9e4d1f814fb88153a94a3b04ep_bytes: ff250020400000000000000000000000timestamp: 2015-07-19 22:12:42

Version Info:

Translation: 0x0000 0x04b0Comments: CompanyName: FileDescription: windllsFileVersion: 1.0.0.0InternalName: windlls.exeLegalCopyright: Copyright © 2015LegalTrademarks: OriginalFilename: windlls.exeProductName: windllsProductVersion: 1.0.0.0Assembly Version: 1.0.0.0

Ursu.882131 also known as:

Lionic Trojan.MSIL.Agent.4!c
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Ursu.882131
FireEye Generic.mg.3fa4999e7a3721f1
ALYac Gen:Variant.Ursu.882131
Zillya Trojan.Agent.Win32.674888
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Trojan:MSIL/StupidCryptor.33bfde86
K7GW Riskware ( 0040eff71 )
K7AntiVirus Riskware ( 0040eff71 )
BitDefenderTheta Gen:NN.ZemsilF.34212.Ao0@aC7@4Zi
Symantec ML.Attribute.HighConfidence
ESET-NOD32 MSIL/TrojanDropper.Agent.BYB
Kaspersky Trojan.MSIL.Agent.aaybj
BitDefender Gen:Variant.Ursu.882131
NANO-Antivirus Trojan.Win32.Agent.dukdxt
Tencent Msil.Trojan.Agent.Loie
Ad-Aware Gen:Variant.Ursu.882131
Emsisoft Gen:Variant.Ursu.882131 (B)
Comodo Malware@#2hf06niu4ajxg
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition Artemis!Trojan
Sophos Mal/Generic-S
Ikarus Trojan.MSIL.Agent
GData Gen:Variant.Ursu.882131
Webroot W32.Trojan.Agent.Gen
Avira TR/Dropper.MSIL.172850
Antiy-AVL Trojan/MSIL.Agent
Kingsoft Win32.Troj.Undef.(kcloud)
ZoneAlarm Trojan.MSIL.Agent.aaybj
Microsoft Trojan:Win32/Skeeyah.A!bit
Cynet Malicious (score: 99)
MAX malware (ai score=86)
TrendMicro-HouseCall TROJ_GEN.R002H0CB722
SentinelOne Static AI – Malicious PE
Fortinet W32/Agent.AAYBJ!tr
Cybereason malicious.e7a372
Panda Trj/CI.A

How to remove Ursu.882131?

  • 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.
Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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