Categories: Malware

Ursu.438502 (file analysis)

The Ursu.438502 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.438502 virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Creates RWX memory
  • Possible date expiration check, exits too soon after checking local time
  • Dynamic (imported) function loading detected
  • Performs HTTP requests potentially not found in PCAP.
  • HTTPS urls from behavior.
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Behavioural detection: Injection (Process Hollowing)
  • Executed a process and injected code into it, probably while unpacking
  • Behavioural detection: Injection (inter-process)
  • Installs itself for autorun at Windows startup
  • Attempts to modify proxy settings
  • Harvests cookies for information gathering
  • Anomalous binary characteristics

How to determine Ursu.438502?


File Info:

name: 230AE82C63A6EBA485AF.mlwpath: /opt/CAPEv2/storage/binaries/e2660cf99707ad49f8e352efd8bb127743d8f5a8e00ad19b7bebc84bd13a9719crc32: 8FA64E29md5: 230ae82c63a6eba485afefaa369c254esha1: 3738771de227b0a5c7dc956894569eab9a5998c7sha256: e2660cf99707ad49f8e352efd8bb127743d8f5a8e00ad19b7bebc84bd13a9719sha512: 5ac0dce4b3cad5dd63be32e4144124a01d23cd3328700c1f37269472d07fb620667530c1d1813c1743ae61cdd0600ce5e967484521247e8104167efe9fef651assdeep: 3072:kTex0tPGDCAJUytrjkDxthjNXBF4BpGUT:kTVGeWvWtDxFCp9type: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1A4C3CE127B42DA32DC050974455286C1EBFF2E833E969C6B9F443E7E6AB03F474796A0sha3_384: ddd33f89fb22b56a2c7b704f74d6fc1b7dfa62cfa19adcdaafae034a02e1691a19a029af4c726231e0a0fbcab98e63b6ep_bytes: e853170000e916feffff558bec81ec28timestamp: 2009-07-07 14:17:33

Version Info:

FileDescription: LKuds cl ssdFileVersion: 0, 1, 2, 0InternalName: SSDLegalCopyright: United StatesOriginalFilename: SystemProductName: Windows baseProductVersion: 0, 0, 0, 0Translation: 0x0409 0x04b0

Ursu.438502 also known as:

Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Ursu.438502
FireEye Generic.mg.230ae82c63a6eba4
CAT-QuickHeal Trojan.Vundo.Gen
McAfee Vundo-FAYV!230AE82C63A6
Cylance Unsafe
Zillya Trojan.SpyVoltar.Win32.88
K7AntiVirus Riskware ( 0040eff71 )
K7GW Riskware ( 0040eff71 )
Cybereason malicious.c63a6e
VirIT Trojan.Win32.Generic.ARML
Cyren W32/Zbot.EW.gen!Eldorado
ESET-NOD32 Win32/SpyVoltar.A
APEX Malicious
ClamAV Win.Virus.Blocker-751
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Ursu.438502
NANO-Antivirus Trojan.Win32.Butirat.bfqthv
SUPERAntiSpyware Trojan.Agent/Gen-Injector
Avast Win32:Injector-CRP [Trj]
Tencent Malware.Win32.Gencirc.10b1f5c3
Emsisoft Gen:Variant.Ursu.438502 (B)
Comodo TrojWare.Win32.Crypt.BS@7iu3rb
DrWeb BackDoor.Butirat.228
VIPRE Trojan.Win32.Zbot.kc (v)
TrendMicro TROJ_RANSOM_BL132BDE.TOMC
McAfee-GW-Edition BehavesLike.Win32.Emotet.cc
Sophos ML/PE-A + Mal/Zbot-KC
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan/Jorik.fzte
Avira TR/Vundo.Gen7
Antiy-AVL Trojan/Generic.ASMalwS.12FC29
Microsoft Trojan:Win32/Neconyd.A
ViRobot Trojan.Win32.A.Blocker.126976.AC
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Gen:Variant.Ursu.438502
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Blocker.R50980
BitDefenderTheta Gen:NN.ZexaF.34182.hq1@auw3sNli
ALYac Gen:Variant.Ursu.438502
MAX malware (ai score=83)
VBA32 Backdoor.Buterat
Malwarebytes Malware.AI.3079724277
TrendMicro-HouseCall TROJ_RANSOM_BL132BDE.TOMC
Rising Trojan.SpyVoltar!1.6564 (RDMK:cmRtazoPHWUABwEL/5Rse+41WxY7)
Yandex Trojan.GenAsa!vLNtD3Z2U80
Ikarus Virus.Win32.Vundo
MaxSecure Trojan.Malware.7164915.susgen
Fortinet W32/Zbot.KC!tr
AVG Win32:Injector-CRP [Trj]
Panda Trj/Genetic.gen
CrowdStrike win/malicious_confidence_70% (D)

How to remove Ursu.438502?

  • 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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