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Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/07/2024, 12:24

General

  • Target

    2024-07-01_571f65c8da4286e09d5539a726c594a4_cryptolocker.exe

  • Size

    50KB

  • MD5

    571f65c8da4286e09d5539a726c594a4

  • SHA1

    6b70d1b6264e4a63e9781d7fcca9a798a0e72170

  • SHA256

    a10cd8aaa54eaa4e0f23a88effcb1a2116f443c05de2a1e120ef5c4d4d362c6a

  • SHA512

    2662f473c524145e698b023732a0e3fcea49541ebb3a5c5709e8de57efa24c840f02abe141fb5d6dfc4624216c2db519df6a01179ea2024e6174a91bc96f423c

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB0n1L:vj+jsMQMOtEvwDpj5HczerLO04BML

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\2024-07-01_571f65c8da4286e09d5539a726c594a4_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-07-01_571f65c8da4286e09d5539a726c594a4_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3988
    • 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:212

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    50KB

    MD5

    5c2d5dc4dfbf6722f992757105446596

    SHA1

    e65c384fc0e80220c0e3293fe5d94406d2877d3f

    SHA256

    d239ef373843900bf0d0f9132d5dcc7b87614f485d2d15ba98fd2a415e3d64c5

    SHA512

    371486f3d2eee053842992cdf0d48b601b8e0cc0f0e978a0ce1251f362d6eb56c85fdbbe4594a5db063512c4aace0c96fc93cf90a45a4cd469c5ea3e8dfbe125

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/212-17-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/212-23-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/3988-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3988-1-0x0000000000860000-0x0000000000866000-memory.dmp

    Filesize

    24KB

  • memory/3988-8-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB