Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/04/2024, 21:29

General

  • Target

    2024-04-05_5aeb3239c2bd10ed3eb1e01faffe296a_cryptolocker.exe

  • Size

    49KB

  • MD5

    5aeb3239c2bd10ed3eb1e01faffe296a

  • SHA1

    25bbbc6752a967d2282ac0fdc6906543142ec5ca

  • SHA256

    c59cbbb9412ae800a2643eae6748a248cb9aa384f498ad9069b8808ed45c9598

  • SHA512

    3500a715af002de23a4faa8b27bc6c2a02cae0de1bf1e2e6ae9275fe073f9ea6ed8fbd4a299712dadb9d95e616fc97f176992a83329559791c3aa7981d48b1bf

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr46xdUUuuMT8x:vj+jsMQMOtEvwDpj5Hczer5ixuM0

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-05_5aeb3239c2bd10ed3eb1e01faffe296a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-05_5aeb3239c2bd10ed3eb1e01faffe296a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:820
    • 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:3456

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    49KB

    MD5

    5558b185692d8b65336e4ad3502150e6

    SHA1

    700861b960da4460a747f379ca9c44a47c742173

    SHA256

    f1ed631bdd561ab752a2e346944cd050e33438346afbdc2810f3ea09700e10ca

    SHA512

    0213d7e6f18f5465f266adbdbf0fe5e07907c88987a4bed04fae3b9712761e5da66fe03e878c16c53e9297459adfe3b9659ab9af09f7b07a06b58f8a786e9142

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/820-0-0x0000000002280000-0x0000000002286000-memory.dmp

    Filesize

    24KB

  • memory/820-1-0x0000000002280000-0x0000000002286000-memory.dmp

    Filesize

    24KB

  • memory/820-2-0x00000000021A0000-0x00000000021A6000-memory.dmp

    Filesize

    24KB

  • memory/3456-17-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/3456-19-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB