Categories: Trojan

What is “Trojan.Win32.Zenpak.biwa”?

The Trojan.Win32.Zenpak.biwa 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 Trojan.Win32.Zenpak.biwa virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Creates RWX memory
  • Possible date expiration check, exits too soon after checking local time
  • Dynamic (imported) function loading detected
  • Network anomalies occured during the analysis.
  • Enumerates running processes
  • Reads data out of its own binary image
  • A process created a hidden window
  • CAPE extracted potentially suspicious content
  • Executed a command line with /V argument which modifies variable behaviour and whitespace allowing for increased obfuscation options
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • A ping command was executed with the -n argument possibly to delay analysis
  • Uses Windows utilities for basic functionality
  • Created a process from a suspicious location
  • Installs itself for autorun at Windows startup

How to determine Trojan.Win32.Zenpak.biwa?


File Info:

name: 1C8A286C4928BFDD3207.mlwpath: /opt/CAPEv2/storage/binaries/48c015e6897d8be6110ba5793d3a4139a4116c21db34674cb67b75685c4803e7crc32: 35BCF529md5: 1c8a286c4928bfdd3207076076ac5e2dsha1: 8f0b1b7e9b0afb6be1c329e715c756440585bef9sha256: 48c015e6897d8be6110ba5793d3a4139a4116c21db34674cb67b75685c4803e7sha512: a91323c0c84a7b4d7ab7432bf65659a508ef66a7a92c0f72cd5d4b1830dc45fd2e7ed37c5eab482b41176134e0798eace6b3238eb415541fc824bb35fe72c35bssdeep: 6144:SdS5e/5DXMGswDkLLKYzOZOurN5qBvvHEPA1181cNinnexg7uFmoPbT42lhsREo9:SdXxTMGsMEzOL5q9HEP57o94AhuHQ3qtype: PE32+ executable (GUI) x86-64, for MS Windowstlsh: T171D49E86F3E468F5D067D13989928746E27278284B3183CB13A1971E7F376E19D3EB20sha3_384: 07b9053e5ce316dba17ce4e0f0ad6409c0cc80dfd54847a87e7b1c21bb7f2b6aad1e5e0c1d0dd749a3ffd3f44b17475eep_bytes: 4883ec28e8378800004883c428e9fefctimestamp: 2020-12-07 16:35:29

Version Info:

CompanyName: Tarh Afarinan Sepahan(TASoft)FileDescription: Test Application for CSelectDialog classFileVersion: 1.0.0.1InternalName: SelectDialogTest.exeLegalCopyright: Copyright (c) Tarh Afarinan Sepahan (TASoft) Co Ltd. All rights reserved.LegalTrademarks: www.TarhAfarinan.irOriginalFilename: SelectDialogTest.exeProductName: CSelectDialog TesterProductVersion: 1.0.0.1Translation: 0x0409 0x04e4

Trojan.Win32.Zenpak.biwa also known as:

Lionic Trojan.Win32.Bazdor.m!c
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKD.38184031
FireEye Generic.mg.1c8a286c4928bfdd
ALYac Trojan.GenericKD.38184031
K7AntiVirus Trojan ( 0057538b1 )
BitDefender Trojan.GenericKD.38184031
K7GW Trojan ( 0057538b1 )
ESET-NOD32 a variant of Win64/Kryptik.CEE
TrendMicro-HouseCall TROJ_GEN.R002H0DL421
Paloalto generic.ml
Kaspersky Trojan.Win32.Zenpak.biwa
Alibaba Trojan:Win32/Zenpak.e9253c03
Ad-Aware Trojan.GenericKD.38184031
McAfee-GW-Edition RDN/Generic BackDoor
Sophos Mal/Generic-S
APEX Malicious
Jiangmin Trojan.Shelma.guw
MAX malware (ai score=87)
Microsoft Trojan:Win32/Wacatac.B!ml
Arcabit Trojan.Generic.D246A45F
GData Trojan.GenericKD.38184031
Cynet Malicious (score: 100)
McAfee RDN/Generic BackDoor
Ikarus Trojan.Win64.Crypt
Panda Trj/CI.A
Fortinet PossibleThreat.MU
AVG Win64:Trojan-gen
Avast Win64:Trojan-gen

How to remove Trojan.Win32.Zenpak.biwa?

  • 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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