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Analysis

  • max time kernel
    154s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/10/2022, 14:06

General

  • Target

    0991a4b587d8f4c8fd0390b02ff15cb48071a50a366442e1be8c234b529189db.exe

  • Size

    384KB

  • MD5

    90d855911da33cbe8360186919a524e0

  • SHA1

    8993977bf29390a7281d00313114d30cef3c8b54

  • SHA256

    0991a4b587d8f4c8fd0390b02ff15cb48071a50a366442e1be8c234b529189db

  • SHA512

    7588996c5fdc330dd20ccc2eb8669d75d13a1879ab7883afee5fd2695115e49c31a1685355bf0a43232acc0e5ee381e82c0ce916ba800952acff9cae8f3fc226

  • SSDEEP

    6144:0stj9I6AG6ud4a2TURdaDZ23w8QEoKHjWZLKBPvHIWMP0:iVakZ2A81vWpaPve0

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 29 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0991a4b587d8f4c8fd0390b02ff15cb48071a50a366442e1be8c234b529189db.exe
    "C:\Users\Admin\AppData\Local\Temp\0991a4b587d8f4c8fd0390b02ff15cb48071a50a366442e1be8c234b529189db.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5032
    • C:\Users\Admin\meiuha.exe
      "C:\Users\Admin\meiuha.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:3400

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\meiuha.exe

    Filesize

    384KB

    MD5

    e6e0f99743e3641a34aa9bdebdfd5e71

    SHA1

    5e5702ca039cdacce012a307d11682044cb21a95

    SHA256

    80977694e13bf20a5ddf5015ebe234094a6f5a4a5abafc0c13617f4d107edbc0

    SHA512

    c93db8ff0fe24040e3baa92f5e9d29d2c29ac69bd2c88cde826f017c17a954976636ebc74c5809235bc81421a05d14f50135e63f64c650be45cd1c554b94169c

  • C:\Users\Admin\meiuha.exe

    Filesize

    384KB

    MD5

    e6e0f99743e3641a34aa9bdebdfd5e71

    SHA1

    5e5702ca039cdacce012a307d11682044cb21a95

    SHA256

    80977694e13bf20a5ddf5015ebe234094a6f5a4a5abafc0c13617f4d107edbc0

    SHA512

    c93db8ff0fe24040e3baa92f5e9d29d2c29ac69bd2c88cde826f017c17a954976636ebc74c5809235bc81421a05d14f50135e63f64c650be45cd1c554b94169c