Backdoor

Backdoor:Win32/Momibot!B (file analysis)

Malware Removal

The Backdoor:Win32/Momibot!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 Backdoor:Win32/Momibot!B virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Dynamic (imported) function loading detected
  • Unconventionial language used in binary resources: Russian
  • 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

How to determine Backdoor:Win32/Momibot!B?


File Info:

name: 7E0CE718A4F151F9F941.mlw
path: /opt/CAPEv2/storage/binaries/2c36c8db5e19892ffffcd23c7cc383cd2f43ba93e6379b28b44ee152d7162a24
crc32: 0CE61464
md5: 7e0ce718a4f151f9f941c17bd4805a92
sha1: 38482f4859257743b2779bb433335b652220a65f
sha256: 2c36c8db5e19892ffffcd23c7cc383cd2f43ba93e6379b28b44ee152d7162a24
sha512: 230530440015404d306c846cc9bbfae7a26dffcd145e7da777c03f4d85c859962f6255b2db147bf0d078f0f2589973268f95c5b08834a2806e8c143a8e9bbadf
ssdeep: 1536:Aattl5qZJCzZijkpHLYcTWEACr5m651g1g/O3mlF9tXxWB9wl2ewh:Aattl5q7iZe4faEACr5zvcSblhU9
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1836302607FAEB84BF3FB21363F6AE30A37593E8057125E65475F8138A11E792242C9D1
sha3_384: 9b157aec3579f8c6d98e4288ee761d8e573dc4fb1960a05227c60f0667533c63726a64f25dedeaf4759fe5b868227fff
ep_bytes: 60be00a041008dbe0070feff5783cdff
timestamp: 2004-07-30 17:11:52

Version Info:

CompanyName: кЫГШЫйъБЯфзтмрУЩБВМмяяЖ
FileDescription: ъжщлтШбБинцИТюЪфЫНъМеЪ
FileVersion: 94.10.55.29
InternalName: лхгыЮзЛЖфМслонЧЯОЮХЖЯфГМпВЩ
LegalCopyright: 8396-2038
OriginalFilename: E7JtOjxS.exe
ProductName: ьФЩрУквхтДжЮлНюрЗйМгцзТбЕеРК
ProductVersion: 94.10.55.29
Translation: 0x04b0 0x0417

Backdoor:Win32/Momibot!B also known as:

BkavW32.AIDetect.malware2
LionicHacktool.Win32.Krap.x!c
Elasticmalicious (high confidence)
DrWebTrojan.Packed.20343
MicroWorld-eScanGen:Variant.Bredo.6
FireEyeGeneric.mg.7e0ce718a4f151f9
McAfeeArtemis!7E0CE718A4F1
CylanceUnsafe
SangforBackdoor.Win32.Momibot.gen
K7AntiVirusTrojan ( f1000f011 )
AlibabaBackdoor:Win32/Momibot.86d6be8d
K7GWTrojan ( f1000f011 )
Cybereasonmalicious.8a4f15
BitDefenderThetaAI:Packer.DC459ED11F
VirITTrojan.Win32.Packed.BECL
CyrenW32/Qakbot.A.gen!Eldorado
SymantecTrojan.Gen
ESET-NOD32a variant of Win32/Kryptik.FGI
TrendMicro-HouseCallBKDR_QAKBOT.SMC
AvastFileRepMalware
ClamAVWin.Trojan.Agent-463276
KasperskyPacked.Win32.Krap.hm
BitDefenderGen:Variant.Bredo.6
NANO-AntivirusTrojan.Win32.ZbotU.wosd
TencentWin32.Packed.Krap.Ahyq
Ad-AwareGen:Variant.Bredo.6
EmsisoftGen:Variant.Bredo.6 (B)
ComodoMalCrypt.Indus!@1qrzi1
VIPRETrojan.Win32.Nedsym.f (v)
TrendMicroBKDR_QAKBOT.SMC
McAfee-GW-EditionBehavesLike.Win32.Fujacks.kc
CMCGeneric.Win32.7e0ce718a4!CMCRadar
SophosMal/Generic-S + Mal/Zbot-U
Paloaltogeneric.ml
GDataGen:Variant.Bredo.6
JiangminBackdoor/IRCNite.cm
WebrootTrojan.Dropper.Gen
AviraTR/Zbot.67072
Antiy-AVLTrojan[Packed]/Win32.Krap
ArcabitTrojan.Bredo.6
ViRobotTrojan.Win32.Krap.67072.IJ
ZoneAlarmPacked.Win32.Krap.hm
MicrosoftBackdoor:Win32/Momibot.gen!B
CynetMalicious (score: 100)
AhnLab-V3Packed/Win32.Krap.C144377
ALYacGen:Variant.Bredo.6
MAXmalware (ai score=100)
VBA32Trojan.Zeus.EA.0999
MalwarebytesMalware.Heuristic.1003
APEXMalicious
RisingTrojan.Win32.Generic.157A15BA (C64:YzY0Oo7ygNkPeGLv)
YandexTrojan.GenAsa!fGX3bvFSQwM
SentinelOneStatic AI – Malicious PE
MaxSecureTrojan.Malware.300983.susgen
FortinetW32/Krypt.A!tr.dldr
AVGFileRepMalware
PandaTrj/Sinowal.XEG
CrowdStrikewin/malicious_confidence_70% (D)

How to remove Backdoor:Win32/Momibot!B?

Backdoor:Win32/Momibot!B 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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