General

  • Target

    65b748276b7dea04af2f7f40ca1d08a1395c0de73734c82c581953b9213dc1a9

  • Size

    107KB

  • Sample

    220521-ntt1paebc4

  • MD5

    7eb5ac82b172bf7ff3b2b0b810d75268

  • SHA1

    bb8e2ada4f255b169e95c3f700b55a801ffb67ea

  • SHA256

    65b748276b7dea04af2f7f40ca1d08a1395c0de73734c82c581953b9213dc1a9

  • SHA512

    0f465a943a490600851d5dbab70e52dfb2c589bb8386a26e5d754c677f7bdeabbbe1874b4a3d05a842c4ebfc0ef650c539cc81bd57629096e458f6fbef41b749

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

DIRECT

Mutex

chizzy25@@!7^UPCAZ

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

  • pastebin_config

    https://pastebin.com/raw/HKYwiN9V

aes.plain

Targets

    • Target

      Doc#662020094753525765678.exe

    • Size

      301KB

    • MD5

      9b70f0dee9fa7de571b2c08a6f3a9a75

    • SHA1

      f3ad5f3cabe73c60c795c3367faaca682ddc1cc9

    • SHA256

      249b086fbb970eefa5bc4c9bcebcda1e8a638ed82a1bbf1a106cfe3807e3e121

    • SHA512

      2d47ea2d01e5643e5e5bec7e4b44e2c6cbc5c69f233bef27def943343403733a484baa58b90699f8ca29be52086750d505c47d876f8076ca363797be2f5badd7

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers.

    • Async RAT payload

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Command and Control

Web Service

1
T1102

Tasks