Overview

overview

10

Static

static

dcc7d9e864...18.exe

windows7-x64

3

dcc7d9e864...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    dcc7d9e8643c680dc44a2b7b41e5446d5e2c72b5c24a98f29ee157f188144e18

  • Size

    720KB

  • Sample

    221119-g4pqdsgf22

  • MD5

    26a918e7cd82bd7a6d996a11f7100201

  • SHA1

    cad5e730805136afd7c5b52779190b4ea31fad1b

  • SHA256

    dcc7d9e8643c680dc44a2b7b41e5446d5e2c72b5c24a98f29ee157f188144e18

  • SHA512

    ce98ff5d2bc9e6dbd10f90d7322c820840d741ca261e09bb58260117155ea8f10f2a0cdb59fb786ae77c521e61de19da671635a960e70f4903040a847b532c2d

  • SSDEEP

    12288:te1irl7a9Gs+Dh+IELDHhDJ9vCG+WW3yW0UEJodMSIpboWagNRUhH11vWDmWd2W8:01irl7aaDhaHBfW3y/UEJo1Ihot2WNvB

Score
10/10
darkcomethfevasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

HF

C2

kori.noip.me:1604

Mutex

DC_MUTEX-29YSYXC

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    rCPGBafHwHQh

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      dcc7d9e8643c680dc44a2b7b41e5446d5e2c72b5c24a98f29ee157f188144e18

    • Size

      720KB

    • MD5

      26a918e7cd82bd7a6d996a11f7100201

    • SHA1

      cad5e730805136afd7c5b52779190b4ea31fad1b

    • SHA256

      dcc7d9e8643c680dc44a2b7b41e5446d5e2c72b5c24a98f29ee157f188144e18

    • SHA512

      ce98ff5d2bc9e6dbd10f90d7322c820840d741ca261e09bb58260117155ea8f10f2a0cdb59fb786ae77c521e61de19da671635a960e70f4903040a847b532c2d

    • SSDEEP

      12288:te1irl7a9Gs+Dh+IELDHhDJ9vCG+WW3yW0UEJodMSIpboWagNRUhH11vWDmWd2W8:01irl7aaDhaHBfW3y/UEJo1Ihot2WNvB

    Score
    10/10
    darkcomethfevasionpersistencerattrojan

    • 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.

    • Windows security modification

      evasiontrojan

    • 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

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