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Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    23/02/2024, 16:56

General

  • Target

    2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe

  • Size

    41KB

  • MD5

    fb3d07fd5f7ba731c198a6253fa338be

  • SHA1

    e3ca3c09b430b18df8ef24f0f640dea2fd553d95

  • SHA256

    a2c7bb78b7210bef61e3af859d650054ccb7e32a322ebcbe62db303a0c48d239

  • SHA512

    b850b2bb3fe58955aa5d714d40a30a350481b710c17d56ab4b5a35bfa41a7ac1f79b391a422b95b31e3b8def7b7148d0569da72101dd5a29700f4a1fb1ac1512

  • SSDEEP

    768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMpheY:bc/y2lkF0+BeF

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1656
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:2508

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\rewok.exe

    Filesize

    41KB

    MD5

    a084a5ba6c751cb7c1a927370cb4a77e

    SHA1

    5833281843876ee7b0aaea17534701d3be137d98

    SHA256

    7bfd08fc9cf8f727d637da96230c4c5281a1e00cf5c40ae019f03d705af39aac

    SHA512

    00189224a2d9f13a788dd2fe9b0b1021b3df1803f726ae807d41cf5ec40a8f67d90ded87b2a7e7cbbda074b0609148b33cae818e221fc99f577edd4260882f59

  • memory/1656-0-0x0000000000350000-0x0000000000356000-memory.dmp

    Filesize

    24KB

  • memory/1656-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/1656-8-0x0000000000350000-0x0000000000356000-memory.dmp

    Filesize

    24KB

  • memory/2508-17-0x0000000000490000-0x0000000000496000-memory.dmp

    Filesize

    24KB