Analysis

  • max time kernel
    135s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/01/2024, 17:31

General

  • Target
    2024-01-25_832269203e7cf07dff5a24f86f61d7ba_cryptolocker.exe
  • Size 93KB
  • Sample240125-v358msbga9
  • SHA256 c79bca8f939801dddc5fb7167e03c455199cc0b03119f2992f2445489346cc90
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Kinsing

    Kinsing is a loader written in Golang.

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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_832269203e7cf07dff5a24f86f61d7ba_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_832269203e7cf07dff5a24f86f61d7ba_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2168
    • 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:4820

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 93KB
        • SHA256 0a0812bc57cb6bc49e5f2f8bfab9b1fd984cdaba79071141208c806428422b62
        • MD5 SHA1 SHA512 SSDEEP

        memory/2168-0-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/2168-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

        memory/2168-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

        memory/2168-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

        memory/2168-18-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/4820-17-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/4820-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

        memory/4820-22-0x00000000006B0000-0x00000000006B6000-memory.dmp

        memory/4820-55-0x0000000000500000-0x0000000000510000-memory.dmp