Analysis

  • max time kernel
    138s
  • max time network
    174s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/01/2024, 12:14

General

  • Target

    2024-01-06_a94dec1bbc46ab8f22c3775520daf604_cryptolocker.exe

  • Size

    55KB

  • MD5

    a94dec1bbc46ab8f22c3775520daf604

  • SHA1

    cdb8b0ccbfb4bcb7859921f3bc164bf76d739330

  • SHA256

    3b015539863edc985cc84acb69a9ba0bfaebccecbae2f20626123f90c65c55fb

  • SHA512

    6576cdd16fb010cc73b690ac716d4f1efd2296fe97e38e93534ae00aabf1dab6b89d6243fc2221f142b7d7d7b2fa464453bb8d36330b061916697913fe1d043f

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjIm8lB4dCOBy/cMFqeoYPO+V:ZzFbxmLPWQMOtEvwDpj38lD/cMAT+V

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
  • 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\2024-01-06_a94dec1bbc46ab8f22c3775520daf604_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-06_a94dec1bbc46ab8f22c3775520daf604_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3068
    • 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:2696

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    56KB

    MD5

    9969f54491bf966f10d62b581080c279

    SHA1

    5f6cb126ed80a4dba9aa05555cacd06a0f2bfa31

    SHA256

    09be19c70575aac63156b972980da70d4ed0e7263efaf59a3162623e137fbdf9

    SHA512

    9e359babd3e1e452cbf4f43a4ae7f74b47d0bfd7a534e25ec9a1cb76c029d5f212f8a70ffa1f032df95ac26103924f61aed0705d8d8c1f48393517655312d6e9

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2696-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/2696-22-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/3068-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/3068-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

    Filesize

    24KB

  • memory/3068-2-0x00000000007F0000-0x00000000007F6000-memory.dmp

    Filesize

    24KB

  • memory/3068-3-0x0000000000820000-0x0000000000826000-memory.dmp

    Filesize

    24KB

  • memory/3068-11-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB