Backdoor

What is “Backdoor.Simbot”?

Malware Removal

The Backdoor.Simbot 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.

GridinSoft Anti-Malware

Gridinsoft Anti-Malware

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.
6-day free trial available.

What Backdoor.Simbot virus can do?

  • Executable code extraction
  • Injection (inter-process)
  • Injection (Process Hollowing)
  • Creates RWX memory
  • The binary likely contains encrypted or compressed data.
  • Executed a process and injected code into it, probably while unpacking
  • Deletes its original binary from disk
  • Installs itself for autorun at Windows startup
  • Attempts to modify proxy settings
  • Creates a copy of itself
  • Anomalous binary characteristics

Related domains:

z.whorecord.xyz
a.tomx.xyz
intweb.mobwork.net

How to determine Backdoor.Simbot?


File Info:

crc32: FDEE66A3
md5: c1ff6dc62d0ada0bf7562324e6f5d79f
name: C1FF6DC62D0ADA0BF7562324E6F5D79F.mlw
sha1: 3d47565c55f0c0162f8893ca62324532c947954d
sha256: 26698fe634a379b30e7fdf1a3c9c3e19cf398c2f3f04c49a223c4b36b7725257
sha512: 01c3b8ab4160cbf253681cebc6763acd6afd82e96a75829226dfaaaa47e0cbef4b1f828b97395e69c47fc0dfd0692b12a186838f007fd16af9203fdcd8934027
ssdeep: 768:DjGzN14j0U72skw3G81ynYxFmPXfQI3H:DjGzj40sQ58QYxFN+
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright ? 1996-2010 Adobe, Inc.
InternalName: Adobe? Flash? Player Installer/Uninstaller 10.1
FileVersion: 10,1,53,64
CompanyName: Adobe Systems, Inc.
LegalTrademarks: Adobe? Flash? Player
ProductName: Flash? Player Installer/Uninstaller
ProductVersion: 10,1,53,64
FileDescription: Adobe? Flash? Player Installer/Uninstaller 10.1 r53
OriginalFilename: FlashUtil.exe
Translation: 0x0409 0x04b0

Backdoor.Simbot also known as:

BkavW32.InNhcA.Worm
K7AntiVirusTrojan ( 002331771 )
Elasticmalicious (high confidence)
DrWebTrojan.DownLoad2.36100
ClamAVWin.Trojan.Inject-132
CAT-QuickHealBackdoor.Simbot.G4
McAfeeBackDoor-EYG
CylanceUnsafe
ZillyaTrojan.InjectGen.Win32.4
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (D)
K7GWTrojan ( 001fbdf71 )
Cybereasonmalicious.62d0ad
BaiduWin32.Trojan.Inject.bf
CyrenW32/Injector.AV.gen!Eldorado
SymantecTrojan.Dropper
ESET-NOD32a variant of Win32/Injector.ELH
APEXMalicious
AvastWin32:Taidoor-D [Trj]
CynetMalicious (score: 100)
KasperskyTrojan.Win32.Inject.bbyo
BitDefenderTrojan.GenericKDZ.74269
NANO-AntivirusTrojan.Win32.Inject.csnmkc
ViRobotTrojan.Win32.Cson.Gen.A
MicroWorld-eScanTrojan.GenericKDZ.74269
TencentTrojan.Win32.Inject.bbyoa
Ad-AwareTrojan.GenericKDZ.74269
SophosML/PE-A + Troj/CeeInj-M
ComodoTrojWare.Win32.Inject.ka@4o81ww
BitDefenderThetaAI:Packer.721905D21F
VIPRETrojan.Win32.Inject.cj (v)
TrendMicroTROJ_KRYPTK.SMS
McAfee-GW-EditionBehavesLike.Win32.Backdoor.mh
FireEyeGeneric.mg.c1ff6dc62d0ada0b
EmsisoftTrojan.GenericKDZ.74269 (B)
SentinelOneStatic AI – Malicious PE
AviraTR/Crypt.ZPACK.Gen
eGambitUnsafe.AI_Score_99%
Antiy-AVLTrojan/Generic.ASBOL.68
MicrosoftTrojan:Win32/Spy.Zbot.ACM!MTB
SUPERAntiSpywareBackdoor.Agent/Gen-Simbot
GDataTrojan.GenericKDZ.74269
AhnLab-V3Backdoor/Win32.CSon.R7666
Acronissuspicious
VBA32SScope.Backdoor.Simbot
MAXmalware (ai score=100)
MalwarebytesBackdoor.Simbot
PandaTrj/GdSda.A
TrendMicro-HouseCallTROJ_KRYPTK.SMS
RisingMalware.Obscure/Heur!1.A89E (CLASSIC)
YandexTrojan.GenAsa!5YxMY2U2QLk
IkarusTrojan.Win32.Injector
MaxSecureTrojan.Inject.bbyo
FortinetW32/Injector.ELH!tr
AVGWin32:Taidoor-D [Trj]

How to remove Backdoor.Simbot?

Backdoor.Simbot removal tool
  • 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.

About the author

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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