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Analysis

  • max time kernel
    150s
  • max time network
    151s
  • 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, 05:37

General

  • Target

    2024-05-12_c78e191bc2de9f61952ed348c4511068_cryptolocker.exe

  • Size

    67KB

  • MD5

    c78e191bc2de9f61952ed348c4511068

  • SHA1

    ebff2fd719fc6024e8aebcec741a9812ebbd409c

  • SHA256

    5ea02120ab9de19171691916f8d5a508d7a737a549a526d7e0fd95a2ca77fb76

  • SHA512

    1e87a924e57497a129e3e7f5d919d683547ed52b0f90812456b983fbc859a08fff5984a5db0b886c04300fe45703d79276f299cf4751c16f90bf7c094ccf385b

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2l9tMPvdfGy7B:TCjsIOtEvwDpj5HE/OUHnSMYS

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-12_c78e191bc2de9f61952ed348c4511068_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-12_c78e191bc2de9f61952ed348c4511068_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1628
    • 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:4976

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    67KB

    MD5

    19038c6a70af18410ae1bfe12e135626

    SHA1

    618c4fbd4f2ee8340788e4bad2bea759912d7e1e

    SHA256

    03290ccaaa6d957fd8b2fa8b82671ab5436396cee15ee552c5b2ec8f64b7ea0a

    SHA512

    2f62dc67f7ecdfffd63f7ed624dd0d92ce6ffdd543769c054459be1d2c41218adb709c8548d8c7945a7aab916781e82e248f215ebead238299476afcf0c1a39d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1628-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/1628-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB

  • memory/1628-2-0x00000000020E0000-0x00000000020E6000-memory.dmp

    Filesize

    24KB

  • memory/1628-9-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB

  • memory/1628-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4976-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/4976-25-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4976-50-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB