Analysis

  • max time kernel
    137s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/01/2024, 03:57

General

  • Target

    2024-01-24_daf286e9b5be7b357c391b7348df24d0_cryptolocker.exe

  • Size

    40KB

  • MD5

    daf286e9b5be7b357c391b7348df24d0

  • SHA1

    be6b1ac3a9d544ce3a9534718ed405fd50540d8a

  • SHA256

    11a39e9c8d4d0de73b551f5b79a7a0d9e6d2d83ceb343a493fd74a0a8127aaff

  • SHA512

    b6959d2f9b7cd56bc0adfcbd70258d19aaa232aca578810d672b35321b5e35ecd01035c6a6126df4e472cb5915ff522b195b99e0436048a25058d6b9c66370a5

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqhMWKay9x48:6j+1NMOtEvwDpjroKl

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-24_daf286e9b5be7b357c391b7348df24d0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-24_daf286e9b5be7b357c391b7348df24d0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4996
    • 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:4556

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    80ec669bf7359580019ba43be2f1ecad

    SHA1

    a9789e87c3ce13fda18c4bdc2758520ac200aafc

    SHA256

    5e1d201ba58d812a72dec65686f63bc038d67796eb7b0bde37580e217158dfd5

    SHA512

    c699ec2a3dda6e7c35fac0a902077a1e6bd33eefac2ad41dd123aa714b18abac0b77dcffe7fe59209526d79122070a420f09880b210b81c9d3becccd16240996

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4556-21-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4556-19-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/4556-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4996-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4996-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4996-3-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/4996-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4996-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB