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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/06/2024, 19:21

General

  • Target

    2024-06-03_2af463bf281e0453e76e6d1fc1f96899_cryptolocker.exe

  • Size

    87KB

  • MD5

    2af463bf281e0453e76e6d1fc1f96899

  • SHA1

    26c26045e015722239d3c634a30f3a6b8940b0be

  • SHA256

    30106b3a3f0e30e1110768d83a85c6a142fad10ffa8dea62f3cbf87fb80387bb

  • SHA512

    1ce97bbad19a593983ab17b05fe71afcc7dcf61060d0107c60332e32b40e7db45a743527a088f8b1860842afd3d98a8eccf31389eb90c95667bb38c1f324c8ed

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNBlQ:vCjsIOtEvwDpj5H9YvQd2O

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-03_2af463bf281e0453e76e6d1fc1f96899_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-03_2af463bf281e0453e76e6d1fc1f96899_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3664
    • 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:3964

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    87KB

    MD5

    17e5f511d99477ff8866c49463433370

    SHA1

    d6e9b828df06090e368977f004d417b6437d53d4

    SHA256

    ddf2c52429d34c3db7751ee21bff9306565582b12a8217ac3651e0b03f8abf4d

    SHA512

    9b973f1718dd28539b4d04df0c8de6b326062c6303bd21bf4eded8a4cf103fe600c61aeb6853fadf5dae092c709b4122b368266c6f4adbf9a0143479de36c1d7

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3664-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3664-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3664-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3964-17-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/3964-23-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB