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Analysis

  • max time kernel
    131s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 02:26

General

  • Target

    2024-06-02_6c546e978cdbb452cc3fe5ce8dc3b33c_cryptolocker.exe

  • Size

    97KB

  • MD5

    6c546e978cdbb452cc3fe5ce8dc3b33c

  • SHA1

    c081aa8f6503cd93cc0b2ff317d81470d1915ae3

  • SHA256

    7a4afaa26fd575504b2f0507c09aa784801647a5127a5c18d6e239128fce3c37

  • SHA512

    5a4c1a4e25c781246f0ae9f817779efabaf4a87f16e2f0aa7ed36fcc02d50eddb5464f189a82e04f7c8d8d933876e0fd3cc08cba6b944c25baf50fa40331a355

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJYT:xj+VGMOtEvwDpjubwQEIiVmksT

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-02_6c546e978cdbb452cc3fe5ce8dc3b33c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_6c546e978cdbb452cc3fe5ce8dc3b33c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3972
    • 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:2240

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    97KB

    MD5

    615c1a2e4baba6bf80a3a2888b234a91

    SHA1

    80258104c9ceec9456e47d78ea4f85ed74f0a695

    SHA256

    25fbd3c0ed438b6417a66f50e1021cd5d9d02f8f0409a2a184b0492cbf8edada

    SHA512

    ded0abc059715b02eaab1f3cc28e9ed5a8da5e4a8adf009cf7a4f94363eca42ced7ae0497632884a09ccc7e13068a4493519b91a24e716f83ef06334d8dfdb6d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2240-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2240-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2240-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3972-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3972-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3972-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3972-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3972-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB