Overview

overview

10

Static

static

10

58badb5566...3a.exe

windows7-x64

10

58badb5566...3a.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    58badb5566e1fcc9b5059ee3a4d3463d49ca1e9f8ac895cf053a7eddecbaf13a

  • Size

    757KB

  • Sample

    220724-hhmjksbahn

  • MD5

    420646c5f1926d688e68754b57bc7577

  • SHA1

    21ce2ee59335a2ccce8601597986bdaa3ca5721c

  • SHA256

    58badb5566e1fcc9b5059ee3a4d3463d49ca1e9f8ac895cf053a7eddecbaf13a

  • SHA512

    51f41ba49b6941aa1ad93ced1a9d0d848cbae1270440ab9853628255e3ea54d79d533008e0a20a12ff3298eed51a3f8b87a537c1716059c5cb9618057d5ee789

Score
10/10
darkcometwinrarevasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

WinRar

C2

65.25.239.36:256

65.25.239.36:1604
Mutex

DC_MUTEX-SC78WTS

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    kP9lZv112ftw

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      58badb5566e1fcc9b5059ee3a4d3463d49ca1e9f8ac895cf053a7eddecbaf13a

    • Size

      757KB

    • MD5

      420646c5f1926d688e68754b57bc7577

    • SHA1

      21ce2ee59335a2ccce8601597986bdaa3ca5721c

    • SHA256

      58badb5566e1fcc9b5059ee3a4d3463d49ca1e9f8ac895cf053a7eddecbaf13a

    • SHA512

      51f41ba49b6941aa1ad93ced1a9d0d848cbae1270440ab9853628255e3ea54d79d533008e0a20a12ff3298eed51a3f8b87a537c1716059c5cb9618057d5ee789

    Score
    10/10
    darkcometwinrarevasionpersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies firewall policy service

      evasion

    • Disables RegEdit 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

    • 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

1
T1031

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

3
T1112

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