Analysis

  • max time kernel
    93s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/06/2024, 01:13

General

  • Target
    b61a6f5789d53e8972414f610ce8915afd582893555d322745e85381b1aeca77.exe
  • Size 141KB
  • Sample240615-bldmhstemb
  • SHA256 b61a6f5789d53e8972414f610ce8915afd582893555d322745e85381b1aeca77
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

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

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

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b61a6f5789d53e8972414f610ce8915afd582893555d322745e85381b1aeca77.exe
    "C:\Users\Admin\AppData\Local\Temp\b61a6f5789d53e8972414f610ce8915afd582893555d322745e85381b1aeca77.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:660
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b61a6f5789d53e8972414f610ce8915afd582893555d322745e85381b1aeca77.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b61a6f5789d53e8972414f610ce8915afd582893555d322745e85381b1aeca77.exe"
      2⤵
      • Executes dropped EXE
      PID:2564

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        AcroRd32.exe

        • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe
        • Size 2.4MB
        • SHA256 bd7696911d75a9a35dfd125b24cb95003f1e9598592df47fa23a2568986a4a9a
        • MD5 SHA1 SHA512 SSDEEP

        b61a6f5789d53e8972414f610ce8915afd582893555d322745e85381b1aeca77.exe

        • Path C:\Users\Admin\AppData\Local\Temp\3582-490\b61a6f5789d53e8972414f610ce8915afd582893555d322745e85381b1aeca77.exe
        • Size 101KB
        • SHA256 771863b636b5b5c4ad8d95ca278bab5d17ce77b9b65f9ebf165abb98440102f6
        • MD5 SHA1 SHA512 SSDEEP

        memory/660-118-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/660-119-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/660-121-0x0000000000400000-0x000000000041B000-memory.dmp