Overview

overview

10

Static

static

c4dab5471a...5b.exe

windows7-x64

10

c4dab5471a...5b.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    c4dab5471ab7c23e71f8e5796d55c8bf2d7c3a4e8ebba7637d47321aca764c5b

  • Size

    300KB

  • Sample

    221202-1tt2xagh88

  • MD5

    cc0b280b1138859bedd6af39377526a5

  • SHA1

    861cecd1d68a5ee192e69e5f1cf028114ec1b7af

  • SHA256

    c4dab5471ab7c23e71f8e5796d55c8bf2d7c3a4e8ebba7637d47321aca764c5b

  • SHA512

    b002cfc305630fca9c6af061ff032aae88ae0aaa185628808d717ce1eb0ef4802d916a9f78e8582b97e64981d7f1c0ecce4eee35df9f6c5e2d2bbcbead5d51ff

  • SSDEEP

    6144:YRk2kQjwtxwiG9Gl9St23NZCB0lsvW8gco/LDLPOj03p2KZhE:YR49x6EmslevWQIHDOj03p2

Score
10/10
darkcometguest16evasionpersistencerattrojanupx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

jjb4xt3r.myftp.biz:1604

Mutex

DC_MUTEX-8JY3N3Z

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    SjbmmcfPKkjH

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      c4dab5471ab7c23e71f8e5796d55c8bf2d7c3a4e8ebba7637d47321aca764c5b

    • Size

      300KB

    • MD5

      cc0b280b1138859bedd6af39377526a5

    • SHA1

      861cecd1d68a5ee192e69e5f1cf028114ec1b7af

    • SHA256

      c4dab5471ab7c23e71f8e5796d55c8bf2d7c3a4e8ebba7637d47321aca764c5b

    • SHA512

      b002cfc305630fca9c6af061ff032aae88ae0aaa185628808d717ce1eb0ef4802d916a9f78e8582b97e64981d7f1c0ecce4eee35df9f6c5e2d2bbcbead5d51ff

    • SSDEEP

      6144:YRk2kQjwtxwiG9Gl9St23NZCB0lsvW8gco/LDLPOj03p2KZhE:YR49x6EmslevWQIHDOj03p2

    Score
    10/10
    darkcometguest16evasionpersistencerattrojanupx

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • 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

    • Loads dropped DLL

    • Uses the VBS compiler for execution

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1
T1064

Persistence

Winlogon Helper DLL

1
T1004

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Hidden Files and Directories

2
T1158

Scripting

1
T1064

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks