Analysis

  • max time kernel
    190s
  • max time network
    219s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/10/2022, 12:33

General

  • Target
    077c1058c534ab5f3188183887f5b99ebdff235216750deadf86c5ce17a0dc00.exe
  • Size 1.5MB
  • Sample221013-prlf7seah3
  • SHA256 077c1058c534ab5f3188183887f5b99ebdff235216750deadf86c5ce17a0dc00
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect Neshta payload 2 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

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

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 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.

  • 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). Likely ransomware behaviour.

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\077c1058c534ab5f3188183887f5b99ebdff235216750deadf86c5ce17a0dc00.exe
    "C:\Users\Admin\AppData\Local\Temp\077c1058c534ab5f3188183887f5b99ebdff235216750deadf86c5ce17a0dc00.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2100
    • C:\Users\Admin\AppData\Local\Temp\3582-490\077c1058c534ab5f3188183887f5b99ebdff235216750deadf86c5ce17a0dc00.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\077c1058c534ab5f3188183887f5b99ebdff235216750deadf86c5ce17a0dc00.exe"
      2⤵
      • Executes dropped EXE
      PID:4140

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        077c1058c534ab5f3188183887f5b99ebdff235216750deadf86c5ce17a0dc00.exe

        • Path C:\Users\Admin\AppData\Local\Temp\3582-490\077c1058c534ab5f3188183887f5b99ebdff235216750deadf86c5ce17a0dc00.exe
        • Size 1.4MB
        • SHA256 2da149ce42b87681ecdcc8905d0957443f430a9c7002ff78f22a95f9112a7c4c
        • MD5 SHA1 SHA512 SSDEEP

        077c1058c534ab5f3188183887f5b99ebdff235216750deadf86c5ce17a0dc00.exe

        • Path C:\Users\Admin\AppData\Local\Temp\3582-490\077c1058c534ab5f3188183887f5b99ebdff235216750deadf86c5ce17a0dc00.exe
        • Size 1.4MB
        • SHA256 2da149ce42b87681ecdcc8905d0957443f430a9c7002ff78f22a95f9112a7c4c
        • MD5 SHA1 SHA512 SSDEEP

        memory/2100-132-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/2100-138-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4140-136-0x000000006FFF0000-0x0000000070000000-memory.dmp

        memory/4140-137-0x000000006FFF0000-0x0000000070000000-memory.dmp