Analysis

  • max time kernel
    131s
  • max time network
    126s
  • 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, 21:29

General

  • Target

    2024-06-03_413ffb030832986cb5ee13526be790d8_cryptolocker.exe

  • Size

    48KB

  • MD5

    413ffb030832986cb5ee13526be790d8

  • SHA1

    9f828bcc19c3f8545d6f9eafe15c7b7148d46841

  • SHA256

    4763351824e7396314189c4c4e890b6172e46888e9ed514c7dbcbb3b859e5317

  • SHA512

    ec247f8b4536b69d20cd3d812590c65970b39dfd4482db99a29a3d99c29ec174999db87a1c4b784bcc187ca9156da8653e5e6847c4aa5cbfb1fce3880dc01e77

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaRhAT:xj+VGMOtEvwDpjy+TRhc

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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_413ffb030832986cb5ee13526be790d8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-03_413ffb030832986cb5ee13526be790d8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4272
    • 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:4964

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    246f6515ce966562c1a4170d5a3d0b82

    SHA1

    27cb4f3bcc4673af001513474730913d5a5e2827

    SHA256

    d198e60b138b70a38e556d974946068541040438a6f701e742600d13edf21f2c

    SHA512

    5541d6c980fa944897e7f07313261d76e4f22c80778b63ce414df8b810530f4e138f6d1a7efc8e59e45e4fd9d6655d2d6cd9c50b239e5c2312c14ceb32fb6078

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4272-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4272-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/4272-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4272-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4272-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4964-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4964-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4964-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4964-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB