Categories: Trojan

About “Win32/TrojanDownloader.Small.OCD” infection

The Win32/TrojanDownloader.Small.OCD 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 Win32/TrojanDownloader.Small.OCD virus can do?

  • Sample contains Overlay data
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Checks adapter addresses which can be used to detect virtual network interfaces
  • Dynamic (imported) function loading detected
  • Performs HTTP requests potentially not found in PCAP.
  • HTTPS urls from behavior.
  • 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
  • A process attempted to delay the analysis task by a long amount of time.
  • Installs itself for autorun at Windows startup
  • Attempts to modify proxy settings

How to determine Win32/TrojanDownloader.Small.OCD?


File Info:

name: EFADF20C27E655714112.mlwpath: /opt/CAPEv2/storage/binaries/c3ac2ee1c24f219909d8baddb90df09161170dad13477c3775586ec2b72cdd2ccrc32: C8ED5EE8md5: efadf20c27e655714112c4835f0dd541sha1: e48720f24375d9bb6046b04a305c5ed94e39471asha256: c3ac2ee1c24f219909d8baddb90df09161170dad13477c3775586ec2b72cdd2csha512: 5204a69e560e37d071afce49b38118eec80fae3797436feb1a69e37ee0ff5b7b3f4c0d6872cfd956775a231e7d463740e7fc98f9e39d6b57444f6a21d78dbbdbssdeep: 3072:kdPXqBloKbgbntDbgbntW5n2ThWsNexPnCrnkDKt5n2ThWsNexPnCrnd:khqBloKbSxbSankP+6bkD4nkP+6bdtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1BFC3127763036A33F94179B3E76A599C04BEA3908EDBE5F0CA95B6FB8475C01014AB0Dsha3_384: 0cc43792d3c3f98c0eb5841bcaf86078528fd78c1d1cac738e61abffbc0c65e8f675c71417aaf0c28a7505373da5f08eep_bytes: 60be000041008dbe0010ffff5783cdfftimestamp: 2008-03-03 22:24:20

Version Info:

0: [No Data]

Win32/TrojanDownloader.Small.OCD also known as:

tehtris Generic.Malware
DrWeb Trojan.PWS.Pace
MicroWorld-eScan Trojan.Downloader.Small.AAKR
FireEye Generic.mg.efadf20c27e65571
CAT-QuickHeal Trojan.Toga.9282
ALYac Trojan.Downloader.Small.AAKR
Cylance Unsafe
Zillya Downloader.Small.Win32.23837
Sangfor Suspicious.Win32.Save.a
K7AntiVirus EmailWorm ( 000415851 )
K7GW EmailWorm ( 000415851 )
CrowdStrike win/malicious_confidence_100% (D)
BitDefenderTheta AI:Packer.7F0A8C521B
Cyren W32/Downloader.OVCG-3444
Symantec W32.SillyFDC
Elastic malicious (moderate confidence)
ESET-NOD32 Win32/TrojanDownloader.Small.OCD
TrendMicro-HouseCall WORM_SOCKS.EC
ClamAV Win.Worm.Socks-8976450-0
Kaspersky Trojan-Ransom.Win32.Blocker.jckk
BitDefender Trojan.Downloader.Small.AAKR
NANO-Antivirus Trojan.Win32.Small.mqehs
Avast Win32:Small-JVY [Trj]
Ad-Aware Trojan.Downloader.Small.AAKR
Emsisoft Trojan.Downloader.Small.AAKR (B)
Comodo TrojWare.Win32.TrojanDownloader.Small.OCD@dg9i
Baidu Win32.Trojan-Downloader.Agent.au
VIPRE Trojan.Downloader.Small.AAKR
TrendMicro WORM_SOCKS.EC
McAfee-GW-Edition BehavesLike.Win32.Generic.cc
Trapmine malicious.high.ml.score
Sophos ML/PE-A + Mal/Koceg-A
SentinelOne Static AI – Malicious PE
GData Trojan.Downloader.Small.AAKR
Jiangmin Worm/AutoRun.gxl
Avira TR/Dropper.Gen
MAX malware (ai score=85)
Antiy-AVL Trojan/Generic.ASMalwS.4A
Arcabit Trojan.Downloader.Small.AAKR
ViRobot Trojan.Win32.Downloader.25975
ZoneAlarm Trojan-Ransom.Win32.Blocker.jckk
Microsoft Trojan:Win32/Sabsik.TE.B!ml
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Downloader.R40749
McAfee GenericRXAA-AA!EFADF20C27E6
VBA32 BScope.Trojan.Click
Malwarebytes Generic.Trojan.Obfuscator.DDS
APEX Malicious
Rising Trojan.Agent!1.6618 (CLASSIC)
Ikarus Trojan-Downloader.Win32.Small
Fortinet W32/Socks.NAL!tr
AVG Win32:Small-JVY [Trj]
Cybereason malicious.c27e65
Panda Trj/Genetic.gen

How to remove Win32/TrojanDownloader.Small.OCD?

  • 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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