General

  • Target

    Client.exe

  • Size

    74KB

  • Sample

    250331-nd39es1lv9

  • MD5

    8858177a6b8c6874dc44570c1d6e47ab

  • SHA1

    e5692c7e3198378ef684dc4482599610bc8d1e60

  • SHA256

    5e1b238642a824af1333443f125f3e0e699768c9a33be81f899f65fecd4ba86f

  • SHA512

    92bfaf9d624c5c05cafff01fa9d21467e99f6f46455f2441e500e3f0f539be12b96968e1c7b96f9cca73141e1326476be58e9b3e7c0d2256685dc2ad55519876

  • SSDEEP

    1536:qUsgcxbVzCt+PPMVme9VdQuDI6H1bf/264QzcWLVclN:qU5cxblTPPMVme9VdQsH1bfO64QvBY

Malware Config

Extracted

Family

asyncrat

Version

L838 RAT v1.0.0

Botnet

Default

Mutex

uhuhlilars

Attributes
  • delay

    3

  • install

    true

  • install_file

    Windows Font Manager.exe

  • install_folder

    %AppData%

  • pastebin_config

    https://pastebin.com/raw/rVJQPNVe

aes.plain
1
aH80go03G7u7RpRXMnK0AJsTmSPh5tgw

Targets

    • Target

      Client.exe

    • Size

      74KB

    • MD5

      8858177a6b8c6874dc44570c1d6e47ab

    • SHA1

      e5692c7e3198378ef684dc4482599610bc8d1e60

    • SHA256

      5e1b238642a824af1333443f125f3e0e699768c9a33be81f899f65fecd4ba86f

    • SHA512

      92bfaf9d624c5c05cafff01fa9d21467e99f6f46455f2441e500e3f0f539be12b96968e1c7b96f9cca73141e1326476be58e9b3e7c0d2256685dc2ad55519876

    • SSDEEP

      1536:qUsgcxbVzCt+PPMVme9VdQuDI6H1bf/264QzcWLVclN:qU5cxblTPPMVme9VdQsH1bfO64QvBY

    • AsyncRat

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

    • Asyncrat family

    • Async RAT payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v15

Tasks

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