Analysis

  • max time kernel
    149s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/05/2024, 04:38

General

  • Target

    2024-05-21_32ac44275c6fd67f19e4589ca0daf479_cryptolocker.exe

  • Size

    48KB

  • MD5

    32ac44275c6fd67f19e4589ca0daf479

  • SHA1

    d3f03f4438392c1d6be0649cdfe5a8629fb57ac6

  • SHA256

    973aef4a2e5cd625fdc7bc3c0123f48f07dbd78c0b342bc767fea1c91639cf9a

  • SHA512

    0a91a650665c01255469a68921bca30fd5d2dcc632a9a0098164a45cdfd456a3a1b58c8c686440bcced31bf19b00e8d38c18d466f900569db5dd5298e8687dee

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9Rva/yYsm09:xj+VGMOtEvwDpjy+viHs79

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\2024-05-21_32ac44275c6fd67f19e4589ca0daf479_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-21_32ac44275c6fd67f19e4589ca0daf479_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2512
    • 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:3628

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    1fdaeff33ba6a1ca7fecee22692c893b

    SHA1

    255bb1640f0fb6ab6fb6a376a43381d2f41e20a2

    SHA256

    a3acbaf42fcbbfdd65a8078766fcbd4f61d8167daa1990b2b17b8f8a92b906f5

    SHA512

    e7f9f89d5191cecaae8ed871906ae29acd6f9f4db6f1b0d788e1e287d7d2b37eec7951e9142082f6cd7d05e960cb3e30f5d19c232a8d1562eab10d0bbced43e2

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2512-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2512-1-0x0000000000830000-0x0000000000836000-memory.dmp

    Filesize

    24KB

  • memory/2512-2-0x0000000000830000-0x0000000000836000-memory.dmp

    Filesize

    24KB

  • memory/2512-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/2512-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3628-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/3628-25-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3628-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB