Overview

overview

10

Static

static

10

d37f9d1f9d...5b.exe

windows7_x64

10

d37f9d1f9d...5b.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b

  • Size

    659KB

  • Sample

    220521-a2n8hsebep

  • MD5

    6ea013f9f0eb1aa74f82928a81ecffd1

  • SHA1

    9c23422cfa55dea80866774ea16c019226175449

  • SHA256

    d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b

  • SHA512

    888ef5266a4f761965aa176ddf7b8ae8b699f4b2ec7ab589679fad2f5fdd37b80da7d5d3290ed3f6ba1d29b60a338e7463e71f6c5e0ec7a491996977eda0eed5

Score
10/10
darkcometsazanevasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

0.tcp.ngrok.io:10277

Mutex

DC_MUTEX-CYFYV25

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    834bxKalF1Bf

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Targets

    • Target

      d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b

    • Size

      659KB

    • MD5

      6ea013f9f0eb1aa74f82928a81ecffd1

    • SHA1

      9c23422cfa55dea80866774ea16c019226175449

    • SHA256

      d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b

    • SHA512

      888ef5266a4f761965aa176ddf7b8ae8b699f4b2ec7ab589679fad2f5fdd37b80da7d5d3290ed3f6ba1d29b60a338e7463e71f6c5e0ec7a491996977eda0eed5

    Score
    10/10
    darkcometsazanevasionpersistencerattrojan

    • 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

    • 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

    • 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