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Analysis

  • max time kernel
    38s
  • max time network
    51s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/03/2023, 15:12

General

  • Target

    INSTRUCT.lnk

  • Size

    1KB

  • MD5

    38b05aa4b5ba651ba95f7173c5145270

  • SHA1

    01424a07b968b5659c58c6d11f32f01475921a05

  • SHA256

    dffaefaabbcf6da029f927e67e38c0d1e6271bf998040cfd6d8c50a4eff639df

  • SHA512

    6a04622aff5ba794d15d8516a76469ad2b81c05fa690b9c21389dcdc1ebf285d19a58ca1451c370234316f740ee4d602c188236fb74d0255ae89025d03c5f455

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\INSTRUCT.lnk
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1288
    • C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" BugSplatRc64.dll,InitiateDs
      2⤵
        PID:4268

    Network

    MITRE ATT&CK Enterprise v6

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    Downloads