Overview

overview

10

Static

static

10

flexabyprojectv2.exe

windows7-x64

10

flexabyprojectv2.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    flexabyprojectv2.rar

  • Size

    246KB

  • Sample

    221202-tx5jgshe7y

  • MD5

    9c90198e870d59873a7de8003ec02e13

  • SHA1

    58c8edb76de569ceedb4255cc654f4d031ee98d2

  • SHA256

    19af168aac93966ee27527aff5ca7a258f2c740fac9dd327c440cd225276bb93

  • SHA512

    0ec5ad103e668c7749091d0b9aae7af79613121edfb0b3958386c9947fba375eb7a011b74fa78646f3bcb3dab3b5820135da8eef0c5bba6541cd5a36084d2752

  • SSDEEP

    6144:RSzIBMYilbcEw+AFc3SliFidq/TguDAOpsNk8tIdT:RSDYilwp+ObukuDn8kVV

Score
10/10
darkcometsazanevasionpersistencerattrojanupx

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

hckexe.duckdns.org:1604

Mutex

DC_MUTEX-DY54MEJ

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    aBlcf64AC80d

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      flexabyprojectv2.exe

    • Size

      252KB

    • MD5

      b414dba465bb735661e18eae4e7aca89

    • SHA1

      30c69c395ef9bc6cbcf0fbc7dc8a8f07b1b696c2

    • SHA256

      82df3f039af299fd82ac54b1c8e02346509f9a2c8f09cb843d9d7a6d2d842b2c

    • SHA512

      7de9df971ca0deda15a408e9f4b7c15210453b38072d5b6192ecfc35e65cfb1eb6c772ce3bc1499f82d76c20d40e6b552879c21b0856ec283192847130914d08

    • SSDEEP

      6144:FcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37:FcW7KEZlPzCy37

    Score
    10/10
    darkcometsazanevasionpersistencerattrojanupx

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies security service

      evasion

    • 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

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    • 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

4
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