Analysis

  • max time kernel
    136s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/07/2024, 01:22

General

  • Target
    083f671bdfa7b080edff7dc531e68b5179f0adf3109bc5509952209d4c6bffd1.exe
  • Size 742KB
  • Sample240726-brcbmszhkg
  • SHA256 083f671bdfa7b080edff7dc531e68b5179f0adf3109bc5509952209d4c6bffd1
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect Neshta payload 6 IoCs
  • 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.

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • 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).

  • 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 registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\083f671bdfa7b080edff7dc531e68b5179f0adf3109bc5509952209d4c6bffd1.exe
    "C:\Users\Admin\AppData\Local\Temp\083f671bdfa7b080edff7dc531e68b5179f0adf3109bc5509952209d4c6bffd1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4452
    • C:\Users\Admin\AppData\Local\Temp\083f671bdfa7b080edff7dc531e68b5179f0adf3109bc5509952209d4c6bffd1.exe
      "C:\Users\Admin\AppData\Local\Temp\083f671bdfa7b080edff7dc531e68b5179f0adf3109bc5509952209d4c6bffd1.exe"
      2⤵
        PID:1448
      • C:\Users\Admin\AppData\Local\Temp\083f671bdfa7b080edff7dc531e68b5179f0adf3109bc5509952209d4c6bffd1.exe
        "C:\Users\Admin\AppData\Local\Temp\083f671bdfa7b080edff7dc531e68b5179f0adf3109bc5509952209d4c6bffd1.exe"
        2⤵
        • Checks computer location settings
        • Modifies system executable filetype association
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        PID:1288

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          ACROTE~1.EXE

          • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE
          • Size 86KB
          • SHA256 98a19f6272616cf6b73f5d8369a6e74313226c498f450d472d05b62d3d7474bf
          • MD5 SHA1 SHA512 SSDEEP

          083f671bdfa7b080edff7dc531e68b5179f0adf3109bc5509952209d4c6bffd1.exe

          • Path C:\Users\Admin\AppData\Local\Temp\3582-490\083f671bdfa7b080edff7dc531e68b5179f0adf3109bc5509952209d4c6bffd1.exe
          • Size 701KB
          • SHA256 cd944a10c0b05a3662e730c547e63e42906f29b02e78406fe59e3e13014df293
          • MD5 SHA1 SHA512 SSDEEP

          memory/1288-10-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/1288-112-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/1288-110-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/1288-15-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/1288-11-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/1288-12-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/4452-4-0x0000000004BE0000-0x0000000004BEA000-memory.dmp

          memory/4452-9-0x0000000008B40000-0x0000000008BDC000-memory.dmp

          memory/4452-8-0x0000000006180000-0x000000000620C000-memory.dmp

          memory/4452-7-0x0000000004E20000-0x0000000004E2C000-memory.dmp

          memory/4452-6-0x0000000004DF0000-0x0000000004E02000-memory.dmp

          memory/4452-5-0x00000000750D0000-0x0000000075880000-memory.dmp

          memory/4452-16-0x00000000750D0000-0x0000000075880000-memory.dmp

          memory/4452-0-0x00000000750DE000-0x00000000750DF000-memory.dmp

          memory/4452-3-0x0000000004B30000-0x0000000004BC2000-memory.dmp

          memory/4452-2-0x0000000005000000-0x00000000055A4000-memory.dmp

          memory/4452-1-0x0000000000090000-0x0000000000150000-memory.dmp