Categories: Backdoor

Dropped:Backdoor.Kollah.E removal instruction

The Dropped:Backdoor.Kollah.E 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 Dropped:Backdoor.Kollah.E virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Dynamic (imported) function loading detected
  • Enumerates running processes
  • Unconventionial language used in binary resources: Russian
  • Authenticode signature is invalid
  • Installs itself for autorun at Windows startup
  • Likely virus infection of existing system binary
  • Creates Zeus (Banking Trojan) mutexes

How to determine Dropped:Backdoor.Kollah.E?


File Info:

name: D907525BDCD8BD1218FB.mlwpath: /opt/CAPEv2/storage/binaries/f299c09fe9e62b753ab41a5e0ab9e75ef4dd890ca750975e59bdbf59e60eb889crc32: 2568BDABmd5: d907525bdcd8bd1218fb4fd69afaf1b1sha1: dcc8416276aa3804b8a679539fdf1d869d33d631sha256: f299c09fe9e62b753ab41a5e0ab9e75ef4dd890ca750975e59bdbf59e60eb889sha512: 64ffcca816cc095593b4fbb4a37027d20b389995508862023cc147f0c54d9ebc2c4a5f955691711b2cb8074233288e2f974c31a762644add959abf677a872c2cssdeep: 1536:NB8GgPtAELj0OK6QYKKpsTwbRXNRu1q9xzGC1tXXN:NB8GgP56KcowqyCPXtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1EF638F3172C1D2B1D0BA44329D5747A25DAA782A222B85EFCE61CD475983FC1EF3B346sha3_384: a00bb629112eed01e911ffe35025e4a89c9912f8d0a9d2d88f4ea6dced70f1896195456770b36cb35bcdaf65c9fa8394ep_bytes: 558bec81ec340400005356576a01e832timestamp: 2009-06-25 21:14:51

Version Info:

0: [No Data]

Dropped:Backdoor.Kollah.E also known as:

Bkav W32.AIDetect.malware2
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Panda.264
MicroWorld-eScan Dropped:Backdoor.Kollah.E
FireEye Generic.mg.d907525bdcd8bd12
ALYac Dropped:Backdoor.Kollah.E
Cylance Unsafe
Sangfor Suspicious.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
BitDefenderTheta AI:Packer.8385B9B81F
VirIT Backdoor.Win32.Agent.MPX
Cyren W32/Zbot.BS.gen!Eldorado
ESET-NOD32 a variant of Win32/Spy.Agent.PZ
TrendMicro-HouseCall TROJ_ZBOT.SMUC
Kaspersky Trojan-Proxy.Win32.Agent.ox
BitDefender Dropped:Backdoor.Kollah.E
NANO-Antivirus Trojan.Win32.Panda.vpjct
Avast Win32:Agent-LQE [Trj]
Tencent Backdoor.Win32.Small.ha
Ad-Aware Dropped:Backdoor.Kollah.E
Emsisoft Dropped:Backdoor.Kollah.E (B)
Comodo TrojWare.Win32.TrojanSpy.Zbot.Gen@176vha
F-Secure Trojan.TR/Rootkit.Gen
TrendMicro TROJ_ZBOT.SMUC
McAfee-GW-Edition GenericRXLW-CB!D907525BDCD8
SentinelOne Static AI – Malicious PE
Sophos ML/PE-A + Mal/Behav-010
Ikarus Packed.Win32.Katusha
GData Dropped:Backdoor.Kollah.E
Jiangmin TrojanSpy.Zbot.qkc
Webroot W32.Infostealer.Zeus
Avira TR/Rootkit.Gen
Arcabit Backdoor.Kollah.E
ZoneAlarm Trojan-Proxy.Win32.Agent.ox
Microsoft Trojan:Win32/Zbot.DM!MTB
Cynet Malicious (score: 100)
AhnLab-V3 Win-Trojan/Hupe.Gen
McAfee GenericRXLW-CB!D907525BDCD8
VBA32 Trojan.Inject.01376
Malwarebytes Trojan.ProxyAgent
APEX Malicious
Rising Trojan.Generic@AI.94 (RDML:tWD8fYX2F/MnmUNSxqLfVg)
Yandex Trojan.GenAsa!0a2M2SLlL48
MAX malware (ai score=89)
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Agent.PZ!tr
AVG Win32:Agent-LQE [Trj]
Cybereason malicious.bdcd8b
Panda Trj/Genetic.gen

How to remove Dropped:Backdoor.Kollah.E?

  • 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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