Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/05/2024, 18:24

General

  • Target

    2024-05-12_1e17f9ac73649c66987d37b32ab2e5dc_cryptolocker.exe

  • Size

    96KB

  • MD5

    1e17f9ac73649c66987d37b32ab2e5dc

  • SHA1

    a8f609a61a2a6804bb27c47fe9344fdeab3e410c

  • SHA256

    b752886ad1fdc32fc42834f66486aee9283800226d3c0d4c29f8618a4fd9a128

  • SHA512

    c8ac93691333d387576571c82e4baf194d247016e737ab8dd9db0400a156b15e84b911b69c7a7bbc8c5fb59e47b7810788fecb5b6934928650e7e4ffbb563e3f

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJYY:xj+VGMOtEvwDpjubwQEIiVmksY

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\2024-05-12_1e17f9ac73649c66987d37b32ab2e5dc_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-12_1e17f9ac73649c66987d37b32ab2e5dc_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1396
    • 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:2692

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    96KB

    MD5

    3b4887b50a35515718ad63988e1ada85

    SHA1

    561d0c9e029c66c7c4858d68e7d39ad4c9e3dc6c

    SHA256

    cadad4875c490d6d7b67ed0129d6af01160b1400ce562f61cb669c38d27232ba

    SHA512

    c32a6cbe79050523745dc4ad16b868ea732df205203dc66aebf6e388acc14f64619d892652126e440bb36ced6febf47a81421cb06abb2986c9262e3bae936a04

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1396-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1396-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/1396-2-0x0000000000860000-0x0000000000866000-memory.dmp

    Filesize

    24KB

  • memory/1396-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/1396-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2692-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2692-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2692-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2692-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB