Resubmissions

03-09-2024 18:48

240903-xf68javepg 10

03-09-2024 04:15

240903-et8z6syajf 10

General

  • Target

    BTC.exe

  • Size

    1.1MB

  • Sample

    240903-xf68javepg

  • MD5

    f1424e5b9810a4a9c33506aa784fca89

  • SHA1

    4ad6287fe149832551afbcb1113db50cd133777b

  • SHA256

    8a3da2a07e82bf22f3cd239de861b2b8c50c9fe9ee2ba12a33564e1b5cc93fed

  • SHA512

    e03432137a7c12c03d34302fe4e1774a3a08935d39f665e4086fd8637f4ea961a645e2a8bb3cd85dd24c54861e4f01b0500a70641e2fa3a4a09e2e89a3b77380

  • SSDEEP

    12288:JYYjzzONcuuIYsYNeaCbU6sKySaVQ4pBgncu7EKHCBbsCU/hpgmxCBbsCUXEGnF9:eg9uurUngnBU97EniCUppoiCUXfF9

Malware Config

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

Extracted

Family

xworm

Version

5.0

C2

146.190.29.250:7812

165.227.91.90:7812

167.99.94.206:7812

Mutex

4chIqEbR5Rq6U6EI

Attributes
  • Install_directory

    %AppData%

  • install_file

    Windows Defender Service Host.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

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

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain
aes.plain

Extracted

Family

quasar

Version

2.1.0.0

Botnet

Office04

C2

146.190.29.250:7812

Mutex

VNM_MUTEX_h1gQxrpyccCFZq7JPS

Attributes
  • encryption_key

    V5fWyT4tQqXFouaUUxe2

  • install_name

    Windows Security.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Update

  • subdirectory

    SubDir34

Extracted

Family

gurcu

C2

https://api.telegram.org/bot5904946097:AAEb_US4tHY3ko2z9Y7a20zEv4AtQqZipKM/sendMessage?chat_id=5881759996

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

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

https://api.telegram.org/bot7479631857:AAFuIUMNJYKHzJ3Bc9t4FSh9ZQXlqymhFnk/sendDocument?chat_id=629174914

https://api.telegram.org/bot1119746739:AAGMhvpUjXI4CzIfizRC--VXilxnkJlhaf8/sendDocument?chat_id=109642586

Targets

    • Target

      BTC.exe

    • Size

      1.1MB

    • MD5

      f1424e5b9810a4a9c33506aa784fca89

    • SHA1

      4ad6287fe149832551afbcb1113db50cd133777b

    • SHA256

      8a3da2a07e82bf22f3cd239de861b2b8c50c9fe9ee2ba12a33564e1b5cc93fed

    • SHA512

      e03432137a7c12c03d34302fe4e1774a3a08935d39f665e4086fd8637f4ea961a645e2a8bb3cd85dd24c54861e4f01b0500a70641e2fa3a4a09e2e89a3b77380

    • SSDEEP

      12288:JYYjzzONcuuIYsYNeaCbU6sKySaVQ4pBgncu7EKHCBbsCU/hpgmxCBbsCUXEGnF9:eg9uurUngnBU97EniCUppoiCUXfF9

    • AsyncRat

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

    • 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

    • Gurcu, WhiteSnake

      Gurcu is a malware stealer written in C#.

    • Modifies Windows Defender Real-time Protection settings

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • StormKitty

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

    • StormKitty payload

    • VenomRAT

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

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Async RAT payload

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Drops file in Drivers directory

    • Sets service image path in registry

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • 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)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • 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.

    • Looks up geolocation information via web service

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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks