Analysis

  • max time kernel
    144s
  • max time network
    155s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250410-en
  • resource tags

    arch:x64arch:x86image:win11-20250410-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24/04/2025, 14:39

General

  • Target
    msn.exe
  • Size 524KB
  • Sample250424-r1c8astvbz
  • SHA256 6f10fa3bdb3bfcf6c52c23d31808f365701b433987841cf12c65c577f0977c13
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • macoute

C2
  • 87.98.185.184

Signatures

  • Macoute

    Macoute is a Windows worm.

  • Macoute family
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\msn.exe
    "C:\Users\Admin\AppData\Local\Temp\msn.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4700
    • C:\Program Files (x86)\win\msn.exe
      "C:\Program Files (x86)\win\msn.exe"
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      PID:5872
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Program Files (x86)\win\msn.exe
    1⤵
      PID:5600

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          msn.exe

          • Path C:\Program Files (x86)\win\msn.exe
          • Size 524KB
          • SHA256 6f10fa3bdb3bfcf6c52c23d31808f365701b433987841cf12c65c577f0977c13
          • MD5 SHA1 SHA512 SSDEEP

          memory/4700-0-0x0000000000400000-0x00000000004BF000-memory.dmp

          memory/4700-1-0x0000000000400000-0x00000000004BF000-memory.dmp

          memory/4700-11-0x0000000000400000-0x00000000004BF000-memory.dmp

          memory/5872-12-0x0000000000400000-0x00000000004BF000-memory.dmp

          memory/5872-13-0x0000000000400000-0x00000000004BF000-memory.dmp