Overview

overview

10

Static

static

30a771d62c...79.exe

windows7-x64

10

30a771d62c...79.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    30a771d62c75394d9afe38e6b3650813b669435550e33b8e3a3e070b8c0b3279

  • Size

    3.0MB

  • Sample

    220919-dzeg3sacbn

  • MD5

    7a95c7de3b8a09c6d289ad676c1664bf

  • SHA1

    f37b875bf0d88e9c182a834e67bf8f101aba19ac

  • SHA256

    30a771d62c75394d9afe38e6b3650813b669435550e33b8e3a3e070b8c0b3279

  • SHA512

    ee93787eb9760c08cc4f819b4434ac60e75c6f54695fa69ea1e53266bdaa73b0f43f1646e69aee401d6a10c49e936d68df25df87ef640dd7ca063ab40372c49a

  • SSDEEP

    98304:Wx2VbvzOj347sFbI0fQr/6/PJqsJJjpob:C2Zr+6sTEAPosDjp

Score
10/10
darkcometguest16bootkitpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

cucu.no-ip.org:1500

Mutex

DC_MUTEX-23UB63C

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    naPTMgVpHACh

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Targets

    • Target

      30a771d62c75394d9afe38e6b3650813b669435550e33b8e3a3e070b8c0b3279

    • Size

      3.0MB

    • MD5

      7a95c7de3b8a09c6d289ad676c1664bf

    • SHA1

      f37b875bf0d88e9c182a834e67bf8f101aba19ac

    • SHA256

      30a771d62c75394d9afe38e6b3650813b669435550e33b8e3a3e070b8c0b3279

    • SHA512

      ee93787eb9760c08cc4f819b4434ac60e75c6f54695fa69ea1e53266bdaa73b0f43f1646e69aee401d6a10c49e936d68df25df87ef640dd7ca063ab40372c49a

    • SSDEEP

      98304:Wx2VbvzOj347sFbI0fQr/6/PJqsJJjpob:C2Zr+6sTEAPosDjp

    Score
    10/10
    darkcometguest16bootkitpersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Bootkit

1
T1067

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks