Overview

overview

10

Static

static

10

1yyoRs4y38...Ak.exe

windows7_x64

10

1yyoRs4y38...Ak.exe

windows10_x64

10

Sharing

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General

  • Target

    1yyoRs4y38XZvNF9YQAk.exe

  • Size

    658KB

  • Sample

    210505-z1km7c36h2

  • MD5

    db08908582b5fadec29d5ea3c91b954a

  • SHA1

    fedaf416dd8019a55657d8321d70e2d09c98c595

  • SHA256

    6f08293219654fea6c04ef20b911c4b3d28029ae32b9bcfaa7278df56a059ede

  • SHA512

    05e99bb91df650d18da64d2133c7e289c0485d28e289aa77d1c0e0366473e33da3f0d955a29c93d88f4a47b40f766611cf3c3d07174c602cbb2bf6a76641e916

Score
10/10
darkcometguest16evasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

nanocore4459.ddns.net:5552

Mutex

DC_MUTEX-WPZT55M

Attributes
  • InstallPath

    C:\Windows\System32\drivers\networkdrv.exe

  • gencode

    CtFSuaWNSfPv

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    Network Driver

Targets

    • Target

      1yyoRs4y38XZvNF9YQAk.exe

    • Size

      658KB

    • MD5

      db08908582b5fadec29d5ea3c91b954a

    • SHA1

      fedaf416dd8019a55657d8321d70e2d09c98c595

    • SHA256

      6f08293219654fea6c04ef20b911c4b3d28029ae32b9bcfaa7278df56a059ede

    • SHA512

      05e99bb91df650d18da64d2133c7e289c0485d28e289aa77d1c0e0366473e33da3f0d955a29c93d88f4a47b40f766611cf3c3d07174c602cbb2bf6a76641e916

    Score
    10/10
    darkcometguest16evasionpersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Drops file in Drivers directory

    • 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.

    • Deletes itself

    • Loads dropped DLL

    • 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