Categories: Trojan

Win32/TrojanDownloader.Small.OUC removal tips

The Win32/TrojanDownloader.Small.OUC 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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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.
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What Win32/TrojanDownloader.Small.OUC virus can do?

  • Executable code extraction
  • Attempts to connect to a dead IP:Port (2 unique times)
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
  • Reads data out of its own binary image
  • Drops a binary and executes it
  • Installs itself for autorun at Windows startup
  • Creates a hidden or system file
  • Creates a slightly modified copy of itself
  • Attempts to modify Explorer settings to prevent hidden files from being displayed

Related domains:

ns4.epictureh.net

How to determine Win32/TrojanDownloader.Small.OUC?


File Info:

crc32: F053F6B0md5: 62331a63206e424f61e3cbbf117e149ename: 62331A63206E424F61E3CBBF117E149E.mlwsha1: 33962d80bc91dc2b0ec639dc6895b6e63286840csha256: e7eb0ec2821cfc8b627b8d5bd52cea380c7bbec76a8359979263ac40f8976341sha512: 36a21df35d58f777f1d510b6bb551966032fd5ae71b546354703b33cbdf7b030932b05a9f9c869d8993b434ab0e3b5c288eaef9e5db45a74dcd2111f31fe6e4essdeep: 768:tgIrCiB5tqR+xOF4/i/BEYkp7P6lweQDhDmpU5GFrrEzWsdSE0d8pUHIkI0Ij4:t9NZxO+2G40OIkaj4type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translation: 0x0409 0x04b0InternalName: QMMOPARlFileVersion: 5.74CompanyName: QMMOPARlProductName: QMMOPARlProductVersion: 5.74OriginalFilename: QMMOPARl.exe

Win32/TrojanDownloader.Small.OUC also known as:

Bkav W32.AlterEIP.PE
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.Patched.FI
FireEye Generic.mg.62331a63206e424f
CAT-QuickHeal Trojan.Patched.AM
McAfee VBObfus.b
Cylance Unsafe
Zillya Virus.Starter.Win32.1
SUPERAntiSpyware Trojan.Agent/Gen-Vobfus
Sangfor Malware
K7AntiVirus Trojan ( 00133ee01 )
K7GW Trojan ( 00133ee01 )
Cybereason malicious.3206e4
BitDefenderTheta AI:Packer.352D39801F
Cyren W32/Zbot.T.gen!Eldorado
Symantec W32.Changeup
TotalDefense Win32/SillyDl.SBW
Baidu Win32.Worm.Autorun.z
APEX Malicious
Avast Win32:Zbodo [Inf]
Kaspersky Trojan.Win32.ZbotPatched.a
BitDefender Trojan.Patched.FI
NANO-Antivirus Virus.Win32.Dlder.lbyd
ViRobot Win32.PatchedZBot.A
Tencent Trojan.Win32.Patched.k
Ad-Aware Trojan.Patched.FI
Emsisoft Trojan.Patched.FI (B)
Comodo TrojWare.Win32.Patched.O@1mj32s
F-Secure Trojan:W32/Hutpic.gen!B
DrWeb Trojan.Siggen.34201
VIPRE Virus.Win32.Zbot.a (v)
TrendMicro PE_ZBOT.A
McAfee-GW-Edition BehavesLike.Win32.VBObfus.lm
Sophos ML/PE-A + Troj/Zbot-NY
SentinelOne Static AI – Malicious PE
Jiangmin TrojanDownloader.Genome.ghl
Avira TR/Patched.ZB
MAX malware (ai score=89)
Antiy-AVL Worm/Win32.VBNA.a
Microsoft Virus:Win32/Zbot.A
Arcabit Trojan.Patched.FI
ZoneAlarm Trojan.Win32.ZbotPatched.a
GData Trojan.Patched.FI
Cynet Malicious (score: 100)
AhnLab-V3 Win-Trojan/Patched.AE
Acronis suspicious
VBA32 TScope.Trojan.VB
ALYac Trojan.Patched.FI
TACHYON Trojan/W32.ZbotPatched.77824.B
Malwarebytes Generic.Trojan.Malicious.DDS
ESET-NOD32 Win32/TrojanDownloader.Small.OUC
TrendMicro-HouseCall PE_ZBOT.A
Rising Worm.Agent!1.D162 (CLASSIC)
Yandex Trojan.GenAsa!BuQA6xuGzUk
Ikarus Virus.Worm
Fortinet W32/VBObfus.BDBD!tr
MaxSecure Virus.W32.ZbotPatched.A
AVG Win32:Zbodo [Inf]
Panda W32/Patched.L
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 HEUR/QVM20.1.08DA.Malware.Gen

How to remove Win32/TrojanDownloader.Small.OUC?

  • 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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