Analysis

  • max time kernel
    140s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/04/2024, 15:03

General

  • Target

    2024-04-30_e891805ce47e8ade6edb73f08477ae21_cryptolocker.exe

  • Size

    76KB

  • MD5

    e891805ce47e8ade6edb73f08477ae21

  • SHA1

    5673afc08e97a8585391652b61e202d552e55a9e

  • SHA256

    82c204f256fb843a8b733d89462aae0352d5572ad85e3702a6498ccbb7ab7111

  • SHA512

    b5005731ad360c56256a1885c8385fd8bf5e6951c40ec0adca904a34cec2fcd0c4a2b633fcc5c88f242d50a3af342083979bb8af78871e9972c61cc8100294d7

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KUU:ZVxkGOtEvwDpjcag

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-30_e891805ce47e8ade6edb73f08477ae21_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-30_e891805ce47e8ade6edb73f08477ae21_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3100
    • 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:4008

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    76KB

    MD5

    1e7f25f41d1d6573848ef46fa2717d54

    SHA1

    e8ff538b12ba00d03015e90a699925f95b061d37

    SHA256

    38ffbb6791cba0bc71b0660bddaa8667ed10dd26304758f49fafd59e54a1f0e4

    SHA512

    54f028b3acebc7702b79e12eda2fc5f3fe6ff7af30bba88b1b993cbbf90727366bc0cd1a8b40b3bbd5c5caf8a422de40759c7be834da4fa919d0455345bdf311

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3100-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/3100-1-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/3100-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3100-9-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/3100-19-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/4008-17-0x00000000005F0000-0x00000000005F3000-memory.dmp

    Filesize

    12KB

  • memory/4008-20-0x0000000002060000-0x0000000002066000-memory.dmp

    Filesize

    24KB

  • memory/4008-26-0x0000000002150000-0x0000000002156000-memory.dmp

    Filesize

    24KB