Categories: Malware

Should I remove “Ursu.735769 (B)”?

The Ursu.735769 (B) 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.735769 (B) virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Sample contains Overlay data
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Mimics the system’s user agent string for its own requests
  • Dynamic (imported) function loading detected
  • Performs HTTP requests potentially not found in PCAP.
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • Authenticode signature is invalid
  • Created a process from a suspicious location
  • CAPE detected the Locky malware family

How to determine Ursu.735769 (B)?


File Info:

name: BAAAEFC5706911CD0A79.mlwpath: /opt/CAPEv2/storage/binaries/6d0a7485f18c7a8ab2520451a332bbfda874267cf13b57f94d63431b80837b4ecrc32: 3CBD8903md5: baaaefc5706911cd0a797808e23544aesha1: 77509c6f8d3a78d7639edbbc70b5533c256b3857sha256: 6d0a7485f18c7a8ab2520451a332bbfda874267cf13b57f94d63431b80837b4esha512: 1b0921d94db69726c47a148d51bebbf464d622bab760334df4b85bfe496f14cc76fdd06cb6324a8e9dee1811d4b9f28f76c1cc4f204e9a1a97e7aab19c4d2a30ssdeep: 6144:UW+7+eMTUAzaiVO4TTJMQ0Io9YXRX5vPXyBkk38Kbnk:URyUAWZ4ZMPwoBRBktype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T18A24010033D0C9ABF53A29315977877573B3EE0279025B5B27207F2EEA35281D91A767sha3_384: ca5f369585257ab89077b773b665ffcb523f8aa04e05439e6c0498554c43d4a2b06d777b5df37126e6f47627eeaa3bc3ep_bytes: 81ecd8020000535556576a2033ed5e89timestamp: 2014-10-07 04:40:20

Version Info:

Comments: http://xiph.org/dshow/CompanyName: Xiph.OrgFileDescription: Directshow Filters for Ogg Vorbis, Speex, Theora, FLAC, and WebMFileVersion: 1LegalCopyright: Copyright (c) 2008 - 2011 Xiph.OrgLegalTrademarks: The Xiph Fish Logo and the Vorbis.com many-fish logos are trademarks (tm) of Xiph.OrgProductName: Open CodecsTranslation: 0x0409 0x0000

Ursu.735769 (B) also known as:

Lionic Trojan.Win32.Locky.j!c
Elastic malicious (moderate confidence)
Cynet Malicious (score: 100)
FireEye Gen:Variant.Ursu.735769
McAfee Artemis!BAAAEFC57069
Cylance Unsafe
Sangfor Ransom.Win32.Locky.gen
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Locky.ab5f8c6e
K7GW Trojan ( 0055e3ef1 )
K7AntiVirus Trojan ( 0055e3ef1 )
Symantec Ransom.Cerber
ESET-NOD32 Win32/Filecoder.Locky.C
APEX Malicious
Paloalto generic.ml
Kaspersky Trojan-Ransom.Win32.Locky.cph
BitDefender Gen:Variant.Ursu.735769
NANO-Antivirus Trojan.Win32.Locky.eifdfb
ViRobot Trojan.Win32.Z.Locky.230181
MicroWorld-eScan Gen:Variant.Ursu.735769
Avast Win32:Malware-gen
Ad-Aware Gen:Variant.Ursu.735769
Sophos Troj/Ransom-DVG
Comodo ApplicUnwnt@#16kc6s6wzh56w
DrWeb Trojan.Encoder.3976
VIPRE Gen:Variant.Ursu.735769
TrendMicro Ransom_LOCKY.DLDSAPW
McAfee-GW-Edition BehavesLike.Win32.Dropper.dc
Emsisoft Gen:Variant.Ursu.735769 (B)
GData Gen:Variant.Ursu.735769
Webroot W32.Ransom.Gen
Avira HEUR/AGEN.1242601
MAX malware (ai score=100)
Kingsoft Win32.Troj.GenericKD.v.(kcloud)
Arcabit Trojan.Ursu.DB3A19
ZoneAlarm UDS:DangerousObject.Multi.Generic
Microsoft Ransom:Win32/Locky
AhnLab-V3 Trojan/Win32.Agent.C1612959
ALYac Gen:Variant.Ursu.735769
VBA32 TrojanRansom.Locky
Malwarebytes Ransom.Cerber
TrendMicro-HouseCall Ransom_LOCKY.DLDSAPW
Tencent Win32.Trojan.Inject.Auto
Ikarus Trojan.NSIS.Injector
Fortinet W32/Injector.HC!tr
AVG Win32:Malware-gen
Panda Trj/CI.A

How to remove Ursu.735769 (B)?

  • 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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