General

  • Target

    8dd5914e40b211d4ce4ec927bac083975e4e1910498bcbf45f1233a755c2f3a7

  • Size

    47KB

  • Sample

    230307-2aezbacd83

  • MD5

    4df29d7678c4533be7a9ad05e4bf752a

  • SHA1

    c6ee50bf6f5a8525e73b8394e6646de4b56c0deb

  • SHA256

    8dd5914e40b211d4ce4ec927bac083975e4e1910498bcbf45f1233a755c2f3a7

  • SHA512

    52861a3bf99ad4be25003952b7802a6f47aea7b335321f2d041426edbfafd84d3f9ef971726214ffd43c737ff7360aa5e1fa595fc3cfbfef1761cb045ac21744

  • SSDEEP

    768:aueq1TFBA3VWU1+fhcvmo2qjwU3dmPIwMbhEe0blghZx6Ue7sbKoRTG72BDZ8x:aueq1TFm92m3dPwM9SblghZ4s6Yd8x

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

PI-004-A

C2

172.104.148.228:6606

fusioncore32023.hopto.org:6606

Mutex

fusioncore_was_here

Attributes
  • delay

    3

  • install

    true

  • install_file

    WindowsSettingsHelper.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

asyncrat

Version

AsyncRAT-Sharp X SiphonFilter 0.5.8B

Botnet

VERSION 3

C2

ndospjn.ddns.net:4563

Mutex

SDFSSDFSFSFS()YERSFdaDSWGHIUHERGBIE()RYHEIRUYGBEIRUGYREIUGERGERG

Attributes
  • delay

    3

  • install

    true

  • install_file

    dmpF4GD3.tmp.scr.exe

  • install_folder

    %Temp%

aes.plain

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_file

    systemupdate64.exe

  • install_folder

    %AppData%

  • pastebin_config

    http://pastebin.com/raw/0vQb3Cug

aes.plain

Targets

    • Target

      8dd5914e40b211d4ce4ec927bac083975e4e1910498bcbf45f1233a755c2f3a7

    • Size

      47KB

    • MD5

      4df29d7678c4533be7a9ad05e4bf752a

    • SHA1

      c6ee50bf6f5a8525e73b8394e6646de4b56c0deb

    • SHA256

      8dd5914e40b211d4ce4ec927bac083975e4e1910498bcbf45f1233a755c2f3a7

    • SHA512

      52861a3bf99ad4be25003952b7802a6f47aea7b335321f2d041426edbfafd84d3f9ef971726214ffd43c737ff7360aa5e1fa595fc3cfbfef1761cb045ac21744

    • SSDEEP

      768:aueq1TFBA3VWU1+fhcvmo2qjwU3dmPIwMbhEe0blghZx6Ue7sbKoRTG72BDZ8x:aueq1TFm92m3dPwM9SblghZ4s6Yd8x

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • Async RAT payload

    • XMRig Miner payload

    • Blocklisted process makes network request

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • UPX packed file

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

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks