General

  • Target

    ee7f82c8e4206ef5684612a8bb87659e3de3ec3a6360fa4445c6ba7b09555089

  • Size

    1.1MB

  • Sample

    241217-e3n2cs1qen

  • MD5

    0333b88f46c3307fc9f81e49879a713a

  • SHA1

    71d9774c6655d70b6bfdde93537ab8a71871f720

  • SHA256

    ee7f82c8e4206ef5684612a8bb87659e3de3ec3a6360fa4445c6ba7b09555089

  • SHA512

    e58bff9a4bf38298c16c1eeb03dd30308ac83c78bacb6109a8a3323a22266e6b1bd4567baffb361def5942a966314ce1c632f1169a33be321d5dcddc7fd24540

  • SSDEEP

    24576:FsZLTFNaRFTbOuOVopBeTy5/9sYfel4nVTGqBJyIkZL:FQLTmTbOJGTmPl4ViNIOL

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

Office05

C2

45.202.35.187:7812

Mutex

VNM_MUTEX_huos54NyApqBwZbqPa

Attributes
  • encryption_key

    KtASenD3qm2g9omdsHwb

  • install_name

    Windows Security Service.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Security Update

  • subdirectory

    SubDir2

Extracted

Family

xworm

Version

5.0

C2

45.202.35.187:7812

Mutex

aKdQYeM96lmotCU8

Attributes
  • Install_directory

    %AppData%

  • install_file

    svchost.exe

  • telegram

    https://api.telegram.org/bot7074211690:AAFHdtGIEk1j3FpHjh6_p8Xjh9rfZDo4uSc/sendMessage?chat_id=6291749148

aes.plain

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

https://api.telegram.org/bot7479631857:AAFuIUMNJYKHzJ3Bc9t4FSh9ZQXlqymhFnk/sendMessage?chat_id=6291749148

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

185.252.232.158:7812

64.23.232.116:7812

Mutex

vsvf

Attributes
  • delay

    1

  • install

    true

  • install_file

    Windows Security Health Service.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      ee7f82c8e4206ef5684612a8bb87659e3de3ec3a6360fa4445c6ba7b09555089

    • Size

      1.1MB

    • MD5

      0333b88f46c3307fc9f81e49879a713a

    • SHA1

      71d9774c6655d70b6bfdde93537ab8a71871f720

    • SHA256

      ee7f82c8e4206ef5684612a8bb87659e3de3ec3a6360fa4445c6ba7b09555089

    • SHA512

      e58bff9a4bf38298c16c1eeb03dd30308ac83c78bacb6109a8a3323a22266e6b1bd4567baffb361def5942a966314ce1c632f1169a33be321d5dcddc7fd24540

    • SSDEEP

      24576:FsZLTFNaRFTbOuOVopBeTy5/9sYfel4nVTGqBJyIkZL:FQLTmTbOJGTmPl4ViNIOL

    • AsyncRat

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

    • Asyncrat family

    • Contains code to disable Windows Defender

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

    • Detect Xworm Payload

    • Modifies Windows Defender Real-time Protection settings

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Stormkitty family

    • VenomRAT

      VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.

    • Venomrat family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Async RAT payload

    • Checks computer location settings

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

    • Deletes itself

    • Drops startup file

    • 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.

    • Windows security modification

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • Looks up external IP address via web service

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

    • Looks up geolocation information via web service

      Uses a legitimate geolocation service to find the infected system's geolocation info.

MITRE ATT&CK Enterprise v15

Tasks