Analysis

  • max time kernel
    136s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 19:12

General

  • Target

    20240521797e53d58f0cf2ec486ed37cab9564ffcryptolocker.exe

  • Size

    57KB

  • MD5

    797e53d58f0cf2ec486ed37cab9564ff

  • SHA1

    3c1e7546abb81710ce3faa8acacc857f3509c0ca

  • SHA256

    4b4a95141bb89d4ce4436dcd0363955af9006a322e50023898e1965743edd10b

  • SHA512

    35f1b87ca650a52427fbf225d07e8acfd929a300ec035f09ec06fbf5718ca553e91d64d509b03270a229a87bb349263efce68f846db9bed11bde2f6ed1540f13

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5QJz7/e4O:6j+1NMOtEvwDpjr8oxExe4O

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\20240521797e53d58f0cf2ec486ed37cab9564ffcryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\20240521797e53d58f0cf2ec486ed37cab9564ffcryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2508
    • 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:400

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    57KB

    MD5

    e8fa180830fdbd8c00dc7c2b03bc0255

    SHA1

    d666c89bd875bccb7651f91a30d1d38d39cddb5a

    SHA256

    bbebc9d599cd80beb75b824ec41ef4d87cfc74f54f725a6a79abac8f240b84ee

    SHA512

    2eaba7f4b66b7c61aa5d16a56f686ed7ab481247085f71f35bc2a66c67f4ac9bfc78662555f6cae4cd81fa2bf1cfc58458abd7d3b10f8f96a706305867a19cc4

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/400-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/400-20-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/400-26-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/400-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2508-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2508-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2508-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/2508-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2508-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB