Overview

overview

10

Static

static

10

b.exe

windows7-x64

10

b.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    b.exe

  • Size

    760KB

  • Sample

    230226-krelfagb9y

  • MD5

    feed540d47f7de7021b16c3522d86de1

  • SHA1

    979aaa59e113eface8bcc36cf70ff7798c0f6441

  • SHA256

    8e9072523cb6d64ca2c3f87d24d7068aa5d9864fca1cb1d9cb8c20f0c635ddbf

  • SHA512

    7276deaeca8ea5dc29b485f674ff6846228f0d37c37c4dcceccf147911edc6271c6de642f9b71f32a25c3af229b871e3b02bb21b7a902044a38a5002a4e860a0

  • SSDEEP

    12288:j3OpvNW4a76S/Ddon/m09bbYlIaaMcE2YGhq3vo1RnfAvIESJgoE26yc/Rzsvvl:bOA4aWNn/m09fKIaaBEtWq3A1Ov8Jgbs

Score
10/10
darkcometguest16evasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

considered-stars.at.ply.gg:11659

Mutex

DC_MUTEX-JHE9HZ8

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    nq0hP7zo1zjV

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicrosoftUpdate

Targets

    • Target

      b.exe

    • Size

      760KB

    • MD5

      feed540d47f7de7021b16c3522d86de1

    • SHA1

      979aaa59e113eface8bcc36cf70ff7798c0f6441

    • SHA256

      8e9072523cb6d64ca2c3f87d24d7068aa5d9864fca1cb1d9cb8c20f0c635ddbf

    • SHA512

      7276deaeca8ea5dc29b485f674ff6846228f0d37c37c4dcceccf147911edc6271c6de642f9b71f32a25c3af229b871e3b02bb21b7a902044a38a5002a4e860a0

    • SSDEEP

      12288:j3OpvNW4a76S/Ddon/m09bbYlIaaMcE2YGhq3vo1RnfAvIESJgoE26yc/Rzsvvl:bOA4aWNn/m09fKIaaBEtWq3A1Ov8Jgbs

    Score
    10/10
    darkcometguest16evasionpersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • 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

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

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

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks