Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/04/2024, 00:06

General

  • Target
    a4a861291f0b4da0a980535ece87ad334045051d906be1f43838261fefb6b84d.exe
  • Size 339KB
  • Sample240408-ad4cjaag72
  • SHA256 a4a861291f0b4da0a980535ece87ad334045051d906be1f43838261fefb6b84d
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detects executables containing possible sandbox analysis VM usernames 17 IoCs
  • UPX dump on OEP (original entry point) 20 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 20 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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 System32 directory 12 IoCs
  • Drops file in Program Files directory 18 IoCs
  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a4a861291f0b4da0a980535ece87ad334045051d906be1f43838261fefb6b84d.exe
    "C:\Users\Admin\AppData\Local\Temp\a4a861291f0b4da0a980535ece87ad334045051d906be1f43838261fefb6b84d.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1508
    • C:\Users\Admin\AppData\Local\Temp\a4a861291f0b4da0a980535ece87ad334045051d906be1f43838261fefb6b84d.exe
      "C:\Users\Admin\AppData\Local\Temp\a4a861291f0b4da0a980535ece87ad334045051d906be1f43838261fefb6b84d.exe"
      2⤵
      • Checks computer location settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2164
      • C:\Users\Admin\AppData\Local\Temp\a4a861291f0b4da0a980535ece87ad334045051d906be1f43838261fefb6b84d.exe
        "C:\Users\Admin\AppData\Local\Temp\a4a861291f0b4da0a980535ece87ad334045051d906be1f43838261fefb6b84d.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:3416

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        american gay public hole balls (Melissa).zip.exe

        • Path C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\american gay public hole balls (Melissa).zip.exe
        • Size 792KB
        • SHA256 698f5df21626e67f20b57024dd08b4c6a7809b9830eb8600206e188ccae328de
        • MD5 SHA1 SHA512 SSDEEP

        memory/1508-219-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1508-207-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1508-181-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1508-203-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1508-231-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1508-185-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1508-186-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1508-191-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1508-228-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1508-200-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1508-225-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1508-210-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1508-213-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1508-216-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1508-0-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1508-222-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/2164-182-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/3416-156-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/3416-183-0x0000000000400000-0x000000000041F000-memory.dmp