General

  • Target

    service.exe

  • Size

    283KB

  • Sample

    230317-g2zgtaee77

  • MD5

    c801ed2ca1f4f204ca5d28a6ab366949

  • SHA1

    781f35df9b44560982623ef0259a05fbf99b8fcc

  • SHA256

    c83bb3ba68f3f4fde63abea1a95a89566c4a8b75bac40d47b8733a1dac0d1658

  • SHA512

    2d910f09aaeaf0ad6e769f5148ce61f4d284468da1f109434602e2e4c7ddd567d41cd6dae95aba72133dc77fcf35d9814be6c645d05f40d8268ab9036adce45b

  • SSDEEP

    6144:7gZiAEAO0sByNsAal3gVAWgS7/OhwjKfqZr:7gZXEAO/BUdG3gVdt7KnfqZr

Malware Config

Extracted

Language
ps1
Source
URLs
exe.dropper

https://pastebin.com/raw/vNcCt60A

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

Mutex

Mutex

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

  • pastebin_config

    https://pastebin.com/raw/s14cUU5G

aes.plain

Targets

    • Target

      service.exe

    • Size

      283KB

    • MD5

      c801ed2ca1f4f204ca5d28a6ab366949

    • SHA1

      781f35df9b44560982623ef0259a05fbf99b8fcc

    • SHA256

      c83bb3ba68f3f4fde63abea1a95a89566c4a8b75bac40d47b8733a1dac0d1658

    • SHA512

      2d910f09aaeaf0ad6e769f5148ce61f4d284468da1f109434602e2e4c7ddd567d41cd6dae95aba72133dc77fcf35d9814be6c645d05f40d8268ab9036adce45b

    • SSDEEP

      6144:7gZiAEAO0sByNsAal3gVAWgS7/OhwjKfqZr:7gZXEAO/BUdG3gVdt7KnfqZr

    • AsyncRat

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

    • Async RAT payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • 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.

    • Drops startup file

    • Executes dropped EXE

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v6

Tasks