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
    23-05-2024 01:22

General

  • Target

    2024-05-23_0f56fc3cdd909395ac7f068d03c42403_cryptolocker.exe

  • Size

    44KB

  • MD5

    0f56fc3cdd909395ac7f068d03c42403

  • SHA1

    c41e9db0cba01dcd9c38638a039c3980d899ccce

  • SHA256

    8883db0a214087a94a2dfe4a2df1464c30330115bcbe6c792f8ba77ec8d226b2

  • SHA512

    c6514b2cd73127f0bb9b2952a90da4dd89b2c82c7d146623d877957204100635459234a08fd5463d0c59d1b74e2462fc2542ccc371a01d27305b62fbc772fd9d

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4REL+cc66Tcua:vj+jsMQMOtEvwDpj5HW5scua

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-23_0f56fc3cdd909395ac7f068d03c42403_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-23_0f56fc3cdd909395ac7f068d03c42403_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4820
    • 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:784

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    44KB

    MD5

    4523173848f52d915fbf9a20080d1db4

    SHA1

    cde67a5399dea86d0a4ca3696e8eab725dc4df6c

    SHA256

    9275c066e731078ab79b84d61b0972e9f4e42e49a74eaa4cc67d034d67b29953

    SHA512

    77da2c0767265079eac3bac7a4f3d09f5b3e56e3065b27b93c0c09c44a809c5be6908ea70c1d06c89d276b2b5b72f49f0a5bc1d19987c701baa56f97e3d50801

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/784-17-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/784-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4820-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4820-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4820-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB