Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-06-2024 21:32

General

  • Target

    2024-06-07_e70c4e0437949859d603679e2b5ad8cd_cryptolocker.exe

  • Size

    51KB

  • MD5

    e70c4e0437949859d603679e2b5ad8cd

  • SHA1

    3b004b7e916c82a81be3b2c7c6589d77422e4428

  • SHA256

    0dd46e149afc23ed67a7282f034fc86d7648bb81fc9f5b0f24f49db6a3987b38

  • SHA512

    8c8969ed04a7abc876aef088a402dc580f31bdda8ad6d4e5aa13fc10752940d36538bae98433d82e8bb3920cca866bbaa04195a57e62a2724210f8d7a07112d8

  • SSDEEP

    768:lQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9Rva/yYshNhF:lj+VGMOtEvwDpjy+viHshND

Score
9/10

Malware Config

Signatures

  • 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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-07_e70c4e0437949859d603679e2b5ad8cd_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-07_e70c4e0437949859d603679e2b5ad8cd_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4368
    • 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:4888

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\misid.exe

    Filesize

    51KB

    MD5

    6d14e4cb1664a18e810ed5007c24e170

    SHA1

    92f40c4decdb716fee519fe2a9c7d9b742b38077

    SHA256

    f6bb92a95e7da169b0e410d8c142cb4a351e8d93f9cc6a277f2c40575c631e9e

    SHA512

    7d63b51c5745c31523b9e0f1ef8622dedc846aa4a335fa404cb8daf72d8f820b6856179da0d373dd24312242b222899131b076ae95854ca75e4aa072271fd9f3

  • C:\Users\Admin\AppData\Local\Temp\misids.exe

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4368-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4368-1-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/4368-2-0x0000000000650000-0x0000000000656000-memory.dmp

    Filesize

    24KB

  • memory/4368-9-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/4368-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4888-19-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/4888-20-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/4888-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB