General

  • Target

    avastdriverupdateronlinesetup.exe.bin

  • Size

    923KB

  • Sample

    230505-xpsrhafg29

  • MD5

    489ef9099686c984fc0490b59f96f4db

  • SHA1

    4f9039a74afa59d531d2641e89cf921f1d67e8ab

  • SHA256

    01120207dc5782dd17073a449aae8c37c7cb0e5c3e4061f06b2ea3db302b4070

  • SHA512

    b3f3ecdbd7c998cb979b5a179e7d109703a9ecad47fe381edb547c30cd5c24a37312483f2e9c4dc268a22bd46f36e22b04520fe20d30d209be9920f9e94b7503

  • SSDEEP

    12288:0MSApJVYG5lDLyjsb0eOzkv4R7QnvUUilQ35+6G75V9ZwN6qatppXPVj:0nsJ39LyjbJkQFMhmC+6GD9k8rV

Malware Config

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/bot5601974118:AAHp3jwbm6SGg2t236Jz-maGA6P7zVVCJjo/sendMessage?chat_id=5561212498

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      avastdriverupdateronlinesetup.exe.bin

    • Size

      923KB

    • MD5

      489ef9099686c984fc0490b59f96f4db

    • SHA1

      4f9039a74afa59d531d2641e89cf921f1d67e8ab

    • SHA256

      01120207dc5782dd17073a449aae8c37c7cb0e5c3e4061f06b2ea3db302b4070

    • SHA512

      b3f3ecdbd7c998cb979b5a179e7d109703a9ecad47fe381edb547c30cd5c24a37312483f2e9c4dc268a22bd46f36e22b04520fe20d30d209be9920f9e94b7503

    • SSDEEP

      12288:0MSApJVYG5lDLyjsb0eOzkv4R7QnvUUilQ35+6G75V9ZwN6qatppXPVj:0nsJ39LyjbJkQFMhmC+6GD9k8rV

    • AsyncRat

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

    • Detects Redline Stealer samples

      This rule detects the presence of Redline Stealer samples based on their unique strings.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • StormKitty

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

    • StormKitty payload

    • Async RAT payload

    • Checks computer location settings

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

    • 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.

    • 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 v6

Tasks