General

  • Target

    a2b83ca2802947ffbb1b191ee1b8326d4dcbac5f4d99b.exe

  • Size

    45KB

  • Sample

    240727-tj267szgnb

  • MD5

    66e220b33b24bec99a124bf81f5cbee1

  • SHA1

    147c16eb7bdf357f5061d2acb28736c5d49a0bdb

  • SHA256

    a2b83ca2802947ffbb1b191ee1b8326d4dcbac5f4d99bbb25ba816717b50fa3c

  • SHA512

    30d753a3fe53a4db078d6479ad16f72de80a17835c30f6269edb184f40542826e4da302be370754adeb51c47e242e1f02583a327f7b7493c6c2aa8e7069eb1c3

  • SSDEEP

    768:5uiGNTdFHLBWUZiGrmo2qrrKjGKG6PIyzjbFgX3iFV7wtzuQ66cB2bkBDZyu:5uiGNTdBR2mKYDy3bCXSX7wtzuQMySd7

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    svchost.exe

  • install_folder

    %AppData%

  • pastebin_config

    https://pastebin.com/raw/bHKKgu6n

aes.plain

Targets

    • Target

      a2b83ca2802947ffbb1b191ee1b8326d4dcbac5f4d99b.exe

    • Size

      45KB

    • MD5

      66e220b33b24bec99a124bf81f5cbee1

    • SHA1

      147c16eb7bdf357f5061d2acb28736c5d49a0bdb

    • SHA256

      a2b83ca2802947ffbb1b191ee1b8326d4dcbac5f4d99bbb25ba816717b50fa3c

    • SHA512

      30d753a3fe53a4db078d6479ad16f72de80a17835c30f6269edb184f40542826e4da302be370754adeb51c47e242e1f02583a327f7b7493c6c2aa8e7069eb1c3

    • SSDEEP

      768:5uiGNTdFHLBWUZiGrmo2qrrKjGKG6PIyzjbFgX3iFV7wtzuQ66cB2bkBDZyu:5uiGNTdBR2mKYDy3bCXSX7wtzuQMySd7

    • AsyncRat

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

    • Async RAT payload

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • 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.

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v15

Tasks