Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/05/2024, 19:41

General

  • Target
    2024-05-14_b33d022c7d7d87b713ee3a101bc3d314_cryptolocker.exe
  • Size 76KB
  • Sample240514-yd22gade35
  • SHA256 fdb674c19884494ef31195b4b94d26e8a37b617515d7c799cd2eedb5df177665
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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).

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-14_b33d022c7d7d87b713ee3a101bc3d314_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-14_b33d022c7d7d87b713ee3a101bc3d314_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1328
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:1584

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 76KB
        • SHA256 55b33f8f00b6bffc7bb6beaf988e87337ea42edc561d016bdf68cc0e2f238e2a
        • MD5 SHA1 SHA512 SSDEEP

        misids.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misids.exe
        • Size 315B
        • SHA256 d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3
        • MD5 SHA1 SHA512

        memory/1328-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

        memory/1328-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

        memory/1328-0-0x00000000004A0000-0x00000000004A3000-memory.dmp

        memory/1328-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

        memory/1328-16-0x00000000004A0000-0x00000000004A3000-memory.dmp

        memory/1584-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

        memory/1584-25-0x00000000005A0000-0x00000000005A6000-memory.dmp