Overview

overview

10

Static

static

10

b22b2d1e59...15.exe

windows7-x64

10

b22b2d1e59...15.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    b22b2d1e592b4a7af634805a398222af210b9e3a35b6e2d90ae7ba53cda7d415

  • Size

    658KB

  • Sample

    220725-ajk35sfabp

  • MD5

    012c913e751ab367e15764c21caeda17

  • SHA1

    2ed45638dd8b9730be7e1e128aad0fd89fe423e2

  • SHA256

    b22b2d1e592b4a7af634805a398222af210b9e3a35b6e2d90ae7ba53cda7d415

  • SHA512

    9a3a8136fcf6d9e30c8d7cc97d1fbe5bbfe4326cc1891232027348666fb89b81c218638e42ded7df294e84a3b85b423c6ee51138d55c89d284d8f3792bc0a514

Score
10/10
darkcomethelloevasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Hello

C2

wbbebe.ddns.net:1604

Mutex

DC_MUTEX-LMU8FMS

Attributes
  • InstallPath

    MSDCSC\svchost.exe

  • gencode

    puGMcKAsuLmD

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      b22b2d1e592b4a7af634805a398222af210b9e3a35b6e2d90ae7ba53cda7d415

    • Size

      658KB

    • MD5

      012c913e751ab367e15764c21caeda17

    • SHA1

      2ed45638dd8b9730be7e1e128aad0fd89fe423e2

    • SHA256

      b22b2d1e592b4a7af634805a398222af210b9e3a35b6e2d90ae7ba53cda7d415

    • SHA512

      9a3a8136fcf6d9e30c8d7cc97d1fbe5bbfe4326cc1891232027348666fb89b81c218638e42ded7df294e84a3b85b423c6ee51138d55c89d284d8f3792bc0a514

    Score
    10/10
    darkcomethelloevasionpersistencerattrojan

    • 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

    • Disables Task Manager via registry modification

      evasion

    • Executes dropped EXE

    • 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.

    • Loads dropped DLL

    • Windows security modification

      evasiontrojan

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    • 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

7
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