Overview

overview

10

Static

static

10

9153d1a2f2...95.exe

windows7-x64

10

9153d1a2f2...95.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195

  • Size

    350KB

  • Sample

    240406-3cl13sef85

  • MD5

    7dee9ee8a1f01c84a03eec97edfefa90

  • SHA1

    6ca55a33d811d84fedbff9278f2f8918284f5713

  • SHA256

    9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195

  • SHA512

    9efbf52874dcfc2a2c48dfb6894ffc3c4d9d02ca441260968886500cdfddc5e5bab51ff5b79117cb336aaa45f0206bfdfe60a7d8b04733192c9b732462920e22

  • SSDEEP

    6144:WMI/jlS4kCwHL76nz9Q3uR5LTYYBIsHHN:WMQlS9Cwr79uLLTvBIY

Score
10/10
darkcometguest16evasionpersistencerattrojanupx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

10.10.0.100:1604

Mutex

DC_MUTEX-30LAHYZ

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    al7BRWGr7y55

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Targets

    • Target

      9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195

    • Size

      350KB

    • MD5

      7dee9ee8a1f01c84a03eec97edfefa90

    • SHA1

      6ca55a33d811d84fedbff9278f2f8918284f5713

    • SHA256

      9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195

    • SHA512

      9efbf52874dcfc2a2c48dfb6894ffc3c4d9d02ca441260968886500cdfddc5e5bab51ff5b79117cb336aaa45f0206bfdfe60a7d8b04733192c9b732462920e22

    • SSDEEP

      6144:WMI/jlS4kCwHL76nz9Q3uR5LTYYBIsHHN:WMQlS9Cwr79uLLTvBIY

    Score
    10/10
    darkcometguest16evasionpersistencerattrojanupx

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • UPX dump on OEP (original entry point)

    • Disables RegEdit via registry modification

      evasion

    • Disables Task Manager via registry modification

      evasion

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

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

      upx

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Defense Evasion

Modify Registry

2
T1112

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks