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Analysis

  • max time kernel
    92s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/09/2024, 12:24

General

  • Target

    2024-09-05_07f949b9aaa58ab78099141921de6f76_cryptolocker.exe

  • Size

    63KB

  • MD5

    07f949b9aaa58ab78099141921de6f76

  • SHA1

    e5f80c4a9c2e0bf575f96d845fa1f10825fd58d6

  • SHA256

    55d6ca1a4425c5d720e484e4349cb7a7402e48b43469c8a786c71681f745062f

  • SHA512

    8e4f373d8915c7a255325e0b4145c71ac76808c38e325c391071eafae91e1e116a3325dc42cec819d14aa017161525252d09a5fbe17dd1308f7e0dba67a3d962

  • SSDEEP

    768:0Qz7yVEhs9+syJP6ntOOtEvwDpjFSXOQ69zbjlAAX5e9zJ:0j+soPSMOtEvwDpjwizbR9XwzJ

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-05_07f949b9aaa58ab78099141921de6f76_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-05_07f949b9aaa58ab78099141921de6f76_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3352
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:4472

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    64KB

    MD5

    6e334774884d4d2cbb659e6a6dc90d42

    SHA1

    032514a06f9c8ec6f68fd18732848ace257cc33e

    SHA256

    ce4875fef89f8f7f9e6121e6cec2c70ae9baec35f162267dc4b9e8b743ba81f0

    SHA512

    e8591f3784060351ac45fd31f9d535fdd9467c88f87a7eb72c4038ddc12b3acf303f94a4e0f5df4892cc76d64bdc9176b038a815daf060070416dbe4fd97fca7

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3352-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3352-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3352-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3352-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3352-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4472-19-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4472-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/4472-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB