Overview

overview

10

Static

static

c76dc27b6f...ff.exe

windows7-x64

10

c76dc27b6f...ff.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    c76dc27b6ffba36d451ef02c8f1680dfa40408ec2f1c476a0eb3aadbb30e4aff

  • Size

    377KB

  • Sample

    221203-fx1cwage59

  • MD5

    a1f0d356df081f4cde159183f402ee93

  • SHA1

    3c71aedd2eda2d572fd0cb575fa13e7e74b6cefd

  • SHA256

    c76dc27b6ffba36d451ef02c8f1680dfa40408ec2f1c476a0eb3aadbb30e4aff

  • SHA512

    47442e3b227fde91498ac2096d6eda15b65817c0a9cd192cf787eccadd67973e87c1d8d9b47812e812e03ec74548b998173f25fc255fb8c97631ac5cbd70a833

  • SSDEEP

    6144:GxL3BJrfJXTGhbR1OJguwMNNvyGAcE0njDs9Eoej+4+bnjb3PZAizgk9:urTfkNF3aNvyGAhE09yKdjjDZxp

Score
10/10
darkcomethfevasionpersistencerattrojanupx

Malware Config

Extracted

Family

darkcomet

Botnet

HF

C2

safethinking.zapto.org:1604

Mutex

DC_MUTEX-F0NJMAE

Attributes
  • InstallPath

    MSDCSC\svchost.exe

  • gencode

    JGGiVLcb5Yzq

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    svchost

Targets

    • Target

      c76dc27b6ffba36d451ef02c8f1680dfa40408ec2f1c476a0eb3aadbb30e4aff

    • Size

      377KB

    • MD5

      a1f0d356df081f4cde159183f402ee93

    • SHA1

      3c71aedd2eda2d572fd0cb575fa13e7e74b6cefd

    • SHA256

      c76dc27b6ffba36d451ef02c8f1680dfa40408ec2f1c476a0eb3aadbb30e4aff

    • SHA512

      47442e3b227fde91498ac2096d6eda15b65817c0a9cd192cf787eccadd67973e87c1d8d9b47812e812e03ec74548b998173f25fc255fb8c97631ac5cbd70a833

    • SSDEEP

      6144:GxL3BJrfJXTGhbR1OJguwMNNvyGAcE0njDs9Eoej+4+bnjb3PZAizgk9:urTfkNF3aNvyGAhE09yKdjjDZxp

    Score
    10/10
    darkcomethfevasionpersistencerattrojanupx

    • Darkcomet

      DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies firewall policy service

      evasion

    • Modifies security service

      evasion

    • Windows security bypass

      evasiontrojan

    • Disables RegEdit via registry modification

      evasion

    • Executes dropped EXE

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Windows security modification

      evasiontrojan

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

2
T1031

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

8
T1112

Disabling Security Tools

2
T1089

Hidden Files and Directories

2
T1158

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks