General

  • Target

    Fortnite Internal Esp AIm Clean Full_nls..scr

  • Size

    2.6MB

  • Sample

    220828-e2kmjscdbj

  • MD5

    5361a2f1d174599ebc5b6cc31daf86f2

  • SHA1

    ade74d0abac77203629b81513a739f11b39a52ef

  • SHA256

    55af1ee79176f2503dc6cee5464344e6bbcaa4e37b4ae7217922c8e56ec395cf

  • SHA512

    96381c583b975e4c2cd7ec70bd955936c48a9737036234241e37e73baf81c96cb28ab28d2fe3c53ed1e8ce0be641fba653d7e6877770cb8f60fb32f2c7b703b4

  • SSDEEP

    49152:j8ASxr7FEi5LbunhHpj5G3FVhIdag5SNHeGJWrz:jTSt7FEGnCdpj5G3FVq18gGJ

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

WindowsDefendrSmartScreen

C2

217.64.31.3:9742

Mutex

WindowsDefendrSmartScreen

Attributes
  • delay

    1

  • install

    false

  • install_file

    WindowsDefendrSmartScreen.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

blacknet

Version

v3.7.0 Public

Botnet

uzVHE6

C2

http://fakirlerclub.xyz/blacknet

Mutex

BN[fdc98aef8b987490ccd4d376d67d69a7]

Attributes
  • antivm

    false

  • elevate_uac

    false

  • install_name

    WindowsUpdate.exe

  • splitter

    |BN|

  • start_name

    e162b1333458a713bc6916cc8ac4110c

  • startup

    false

  • usb_spread

    false

Targets

    • Target

      Fortnite Internal Esp AIm Clean Full_nls..scr

    • Size

      2.6MB

    • MD5

      5361a2f1d174599ebc5b6cc31daf86f2

    • SHA1

      ade74d0abac77203629b81513a739f11b39a52ef

    • SHA256

      55af1ee79176f2503dc6cee5464344e6bbcaa4e37b4ae7217922c8e56ec395cf

    • SHA512

      96381c583b975e4c2cd7ec70bd955936c48a9737036234241e37e73baf81c96cb28ab28d2fe3c53ed1e8ce0be641fba653d7e6877770cb8f60fb32f2c7b703b4

    • SSDEEP

      49152:j8ASxr7FEi5LbunhHpj5G3FVhIdag5SNHeGJWrz:jTSt7FEGnCdpj5G3FVq18gGJ

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers.

    • BlackNET

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

    • BlackNET payload

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Modifies WinLogon for persistence

    • Async RAT payload

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks computer location settings

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

    • Loads dropped DLL

    • 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

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Hidden Files and Directories

2
T1158

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Command and Control

Web Service

1
T1102

Tasks