Categories: Backdoor

Backdoor.VB.Agent.ABT (B) (file analysis)

The Backdoor.VB.Agent.ABT (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.VB.Agent.ABT (B) virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • Dynamic (imported) function loading detected
  • The binary contains an unknown PE section name indicative of packing
  • Authenticode signature is invalid
  • Installs itself for autorun at Windows startup
  • Attempts to modify Explorer settings to prevent hidden files from being displayed

How to determine Backdoor.VB.Agent.ABT (B)?


File Info:

name: 4B49F4D299FDAAF20D43.mlwpath: /opt/CAPEv2/storage/binaries/b7058df5c98bf1180463b717629972233e7cfebf5bc33f279e62edd69cd81cbdcrc32: 8F908C91md5: 4b49f4d299fdaaf20d4340695ed02973sha1: b10d6823115fd3259b066fceddb8b2e1246ca962sha256: b7058df5c98bf1180463b717629972233e7cfebf5bc33f279e62edd69cd81cbdsha512: a17f16f92720c7a726aee6ec0a9b41abc5b79af1c9c27d7e0735e4e97beba9d580c09b3c33fae36cb59c329d7096e8a225eaac323511be65dcc1b73b0f6ad30assdeep: 3072:9VMKsWKxlGxE07ABigCFHdLYyBvzyBHNGqXgvnHZyzi0zslLFa/FzKsR:D3sWKxQ52CFHdLYKvzyZNGX/IupG2stype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1B014216BF521C054E59240B8742CEA8AF45C7E7305446972FB81BB5939B27EFA0F6B03sha3_384: 9871e983a21f251b871da5d91b718c671a886e32ff7bedbb90579e739036b5754149556c815320b384507542346becb0ep_bytes: 6868784000e8f0ffffff000000000000timestamp: 2008-12-07 04:12:59

Version Info:

Translation: 0x0409 0x04b0ProductName: Project1FileVersion: 1.00ProductVersion: 1.00InternalName: DOCUMENTOriginalFilename: DOCUMENT.exe

Backdoor.VB.Agent.ABT (B) also known as:

Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Trojan.Siggen6.19362
MicroWorld-eScan Backdoor.VB.Agent.ABT
FireEye Generic.mg.4b49f4d299fdaaf2
CAT-QuickHeal Worm.Copali.OD3
McAfee W32/Worm-GAM!4B49F4D299FD
Cylance Unsafe
VIPRE Trojan.Win32.Swisyn.dfkc (fs)
K7AntiVirus P2PWorm ( 00486ea71 )
K7GW P2PWorm ( 00486ea71 )
Cybereason malicious.299fda
BitDefenderTheta AI:Packer.254A2CEF15
Cyren W32/S-a42f8a3c!Eldorado
Symantec W32.SillyFDC
ESET-NOD32 Win32/VB.OLE
TrendMicro-HouseCall WORM_COPALI_EJ200083.UVPM
ClamAV Win.Dropper.Cerber-7134131-0
Kaspersky Trojan.Win32.Agentb.btmh
BitDefender Backdoor.VB.Agent.ABT
NANO-Antivirus Trojan.Win32.TrjGen.deyzgg
SUPERAntiSpyware Trojan.Agent/Gen-Symmi
Avast Win32:Vitro [Inf]
Tencent Malware.Win32.Gencirc.10b0cd1f
Ad-Aware Backdoor.VB.Agent.ABT
TACHYON Trojan/W32.Agent.196608
Emsisoft Backdoor.VB.Agent.ABT (B)
Comodo TrojWare.Win32.Swisyn.DFX@5ci87q
Baidu Win32.Worm.VB.bf
Zillya Trojan.Swisyn.Win32.32299
TrendMicro WORM_COPALI_EJ200083.UVPM
McAfee-GW-Edition BehavesLike.Win32.VBObfus.cm
Sophos ML/PE-A + Troj/VB-HTM
Ikarus Worm.Win32.VB
Jiangmin Trojan/Swisyn.wsw
Avira TR/Beebone.rhwnabs
Antiy-AVL Trojan/Generic.ASMalwS.93BFFC
Microsoft Worm:Win32/Copali.B
ViRobot Trojan.Win32.Zbot.184320.D
GData Backdoor.VB.Agent.ABT
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.HDC.C436931
Acronis suspicious
VBA32 Trojan.Agentb
ALYac Backdoor.VB.Agent.ABT
MAX malware (ai score=80)
Malwarebytes Trojan.Agent
APEX Malicious
Rising Worm.Copali!1.A2C3 (CLASSIC)
Yandex Trojan.GenAsa!UB1ZEjQvu58
SentinelOne Static AI – Malicious PE
eGambit Unsafe.AI_Score_100%
Fortinet W32/CoinMiner.F
AVG Win32:Vitro [Inf]
Panda Generic Malware
CrowdStrike win/malicious_confidence_100% (D)

How to remove Backdoor.VB.Agent.ABT (B)?

  • 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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