Categories: Trojan

What is “Trojan.Encoder”?

The Trojan.Encoder 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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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.
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What Trojan.Encoder virus can do?

  • Executable code extraction
  • Enumerates user accounts on the system
  • Creates RWX memory
  • A process attempted to delay the analysis task.
  • Reads data out of its own binary image
  • A process created a hidden window
  • Drops a binary and executes it
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic
  • Creates an excessive number of UDP connection attempts to external IP addresses
  • Performs some HTTP requests
  • Unconventionial language used in binary resources: Chinese (Simplified)
  • The binary likely contains encrypted or compressed data.
  • Uses Windows utilities for basic functionality
  • Attempts to delete volume shadow copies
  • Modifies boot configuration settings
  • Exhibits behavior characteristic of Cerber ransomware
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config
  • Mimics the file times of a Windows system file
  • Installs itself for autorun at Windows startup
  • Creates a hidden or system file
  • Attempts to identify installed AV products by installation directory
  • Attempts to modify proxy settings
  • Creates a copy of itself
  • Attempts to modify Explorer settings to prevent hidden files from being displayed
  • Uses suspicious command line tools or Windows utilities

Related domains:

z.whorecord.xyz
a.tomx.xyz
ip-api.com

How to determine Trojan.Encoder?


File Info:

crc32: BE62F2D3md5: b557135c43afa9ae272ecea7b2f8dbffname: B557135C43AFA9AE272ECEA7B2F8DBFF.mlwsha1: 225e067a176de4df664db9f35d64cf0778bcd3casha256: 70436569e7aabc2ff58638a54372eac32f7fed81c4b1143d36c498467ee125f3sha512: 2cfd89b72195f77b391f733b789f18bb1888687465a7512a093dde780d33c60e1a2a7ee466cc6157956e7257a374914466f30ed86b412770aa21ee098aa8b1d8ssdeep: 6144:QshTA/MhHdM46+yNVDuuTLBfBi8WYiVvcPzyDk/MKVcxtN:QQA/69bhy7ummci5cB/MK0Ttype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright 2008InternalName: SysOptFileVersion: 1, 0, 0, 2ProductName: SysOpt ModuleProductVersion: 1, 0, 0, 2FileDescription: SysOpt ModuleOriginalFilename: SysOpt.exeTranslation: 0x0409 0x04b0

Trojan.Encoder also known as:

Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.4691
MicroWorld-eScan Trojan.Ransom.Cerber.1
FireEye Generic.mg.b557135c43afa9ae
CAT-QuickHeal Ransom.Cerber.YY4
ALYac Trojan.Ransom.Cerber.1
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 004f95911 )
BitDefender Trojan.Ransom.Cerber.1
K7GW Trojan ( 004f95911 )
Cybereason malicious.c43afa
BitDefenderTheta Gen:NN.ZexaF.34590.uq1@a0PRCscb
Cyren W32/S-3e1d46f2!Eldorado
Symantec Packed.Generic.459
TrendMicro-HouseCall Ransom_HPCERBER.SM30
Avast Win32:Malware-gen
ClamAV Win.Ransomware.Cerber-9783035-0
Kaspersky HEUR:Trojan.Win32.Generic
Alibaba Ransom:Win32/Cerber.ea67420e
NANO-Antivirus Trojan.Win32.Encoder.evfbms
AegisLab Trojan.Win32.Generic.4!c
Rising Trojan.Kryptik!1.AF0E (CLOUD)
Ad-Aware Trojan.Ransom.Cerber.1
Emsisoft Trojan.Ransom.Cerber.1 (B)
Comodo TrojWare.Win32.Kryptik.ERJ@6l0vie
F-Secure Heuristic.HEUR/AGEN.1111275
Baidu Win32.Trojan.Cerber.h
Zillya Trojan.Zerber.Win32.315
TrendMicro Ransom_HPCERBER.SM30
McAfee-GW-Edition BehavesLike.Win32.Emotet.fh
SentinelOne Static AI – Malicious PE
Sophos ML/PE-A + Mal/Cerber-B
Ikarus Trojan.Crypt
Jiangmin Trojan.Zerber.sm
Avira HEUR/AGEN.1111275
Antiy-AVL Trojan[Ransom]/Win32.Zerber
Microsoft Ransom:Win32/Cerber
Arcabit Trojan.Ransom.Cerber.1
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.Ransom.Cerber.1
Cynet Malicious (score: 100)
AhnLab-V3 Win-Trojan/Cerber.Gen
Acronis suspicious
McAfee Ransomware-FOS!B557135C43AF
MAX malware (ai score=100)
VBA32 Trojan.Encoder
Malwarebytes Malware.AI.2454176477
Panda Trj/GdSda.A
APEX Malicious
ESET-NOD32 Win32/Filecoder.Cerber.B
Tencent Malware.Win32.Gencirc.10b5006a
Yandex Trojan.GenAsa!OKgS6HjbIFQ
eGambit Unsafe.AI_Score_99%
Fortinet W32/Kryptik.HEKH!tr
AVG Win32:Malware-gen
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Win32/Ransom.Cerber.HxQBxekA

How to remove Trojan.Encoder?

  • 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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