General

  • Target

    8ec50a96c6112fc5972b8879d94655091321004fb192060c637a35f026101efa

  • Size

    999KB

  • Sample

    221002-p4lbzafff2

  • MD5

    5648f68e4a0011dafe8d998faa6ceae9

  • SHA1

    a8faf3b312ce52629042f1270f2fa8c2344b04b1

  • SHA256

    8ec50a96c6112fc5972b8879d94655091321004fb192060c637a35f026101efa

  • SHA512

    e6b47b83e2352bca850f807a23b8fdeae49702f5d6c76a8fcb22165ca1334cf25bd2f8200e1eaa1b8c0193b8f852a74632205c93381f90ed7962df288985fda7

  • SSDEEP

    24576:fCUEkTgHq2qJ1W489MripDn7qvdJsj3z9AGOXoYZ7Yeefds:fCVkTB2wW489Mrkn7qvoeGO4Yaeea

Malware Config

Targets

    • Target

      8ec50a96c6112fc5972b8879d94655091321004fb192060c637a35f026101efa

    • Size

      999KB

    • MD5

      5648f68e4a0011dafe8d998faa6ceae9

    • SHA1

      a8faf3b312ce52629042f1270f2fa8c2344b04b1

    • SHA256

      8ec50a96c6112fc5972b8879d94655091321004fb192060c637a35f026101efa

    • SHA512

      e6b47b83e2352bca850f807a23b8fdeae49702f5d6c76a8fcb22165ca1334cf25bd2f8200e1eaa1b8c0193b8f852a74632205c93381f90ed7962df288985fda7

    • SSDEEP

      24576:fCUEkTgHq2qJ1W489MripDn7qvdJsj3z9AGOXoYZ7Yeefds:fCVkTB2wW489Mrkn7qvoeGO4Yaeea

    • Darkcomet

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

    • Modifies WinLogon for persistence

    • Modifies firewall policy service

    • UAC bypass

    • Windows security bypass

    • Executes dropped EXE

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Windows security modification

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Detected potential entity reuse from brand microsoft.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Modify Registry

8
T1112

Bypass User Account Control

1
T1088

Disabling Security Tools

3
T1089

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

4
T1012

System Information Discovery

6
T1082

Collection

Data from Local System

2
T1005

Tasks