Resubmissions

10-01-2023 20:41

230110-zgh87she82 10

09-01-2023 13:23

230109-qmzcyahg5z 8

30-12-2022 04:52

221230-fhnqjafa36 7

29-12-2022 23:57

221229-3z3x4shg5y 8

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29-12-2022 04:18

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18-12-2022 12:11

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04-12-2022 12:48

221204-p157zaec6t 10

General

  • Target

    https://google.com

  • Sample

    230110-zgh87she82

Malware Config

Extracted

Family

blacknet

Version

v3.6.0 Public

Botnet

Bot

C2

http://f0483357.xsph.ru/

Mutex

BN[PHfunXGI-6235724]

Attributes
  • antivm

    true

  • elevate_uac

    false

  • install_name

    jusched.exe

  • splitter

    |BN|

  • start_name

    a5b002eacf54590ec8401ff6d3f920ee

  • startup

    true

  • usb_spread

    true

Extracted

Family

darkcomet

Botnet

Guest16

C2

gameservice.ddns.net:4320

Mutex

DC_MUTEX-WBUNVXD

Attributes
  • InstallPath

    AudioDriver\taskhost.exe

  • gencode

    EWSsWwgyJrUD

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    AudioDriver

Targets

    • Target

      https://google.com

    • BlackNET

      BlackNET is an open source remote access tool written in VB.NET.

    • BlackNET payload

    • Darkcomet

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

    • Modifies WinLogon for persistence

    • Downloads MZ/PE file

    • Executes dropped EXE

    • UPX packed file

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

    • Checks computer location settings

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

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Command and Control

Web Service

1
T1102

Tasks