Analysis

  • max time kernel
    88s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/01/2024, 17:28

General

  • Target
    2024-01-25_561a19f1368139296bbd40a9711f04d7_cryptolocker.exe
  • Size 99KB
  • Sample240125-v19s2sbfe8
  • SHA256 4e042b9356844d81d04cb58c2a516d62966b0ac1e90c3dee53a0ed0323ef84a1
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Kinsing

    Kinsing is a loader written in Golang.

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-25_561a19f1368139296bbd40a9711f04d7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_561a19f1368139296bbd40a9711f04d7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2888
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:4684

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        misid.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misid.exe
        • Size 100KB
        • SHA256 36b13b1472030f06f45a1bffee5109118857cff5ded7ecdf81f1e0d8a99f7bd4
        • MD5 SHA1 SHA512 SSDEEP

        memory/2888-0-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/2888-1-0x0000000002210000-0x0000000002216000-memory.dmp

        memory/2888-3-0x0000000002230000-0x0000000002236000-memory.dmp

        memory/2888-2-0x0000000002210000-0x0000000002216000-memory.dmp

        memory/2888-17-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/4684-19-0x0000000000510000-0x0000000000516000-memory.dmp

        memory/4684-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

        memory/4684-54-0x0000000000500000-0x0000000000510000-memory.dmp