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Analysis

  • max time kernel
    143s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/02/2024, 22:39

General

  • Target

    2024-02-19_6a06e2ddf7e29c83de508024d9c96000_cryptolocker.exe

  • Size

    62KB

  • MD5

    6a06e2ddf7e29c83de508024d9c96000

  • SHA1

    4145c4aded7439315147cbe8516fa2eaceb2a70c

  • SHA256

    3482659ffc8221876eb7c3ca4f5d88b23910e7e8489659d3cf753d7f065e5fe3

  • SHA512

    d1dfd665707e76a33f413ef7b268f6fcefd54d7f42d782a402fb7ea5a15374cc43d67cab8501c52127196e5e3bf5884289b6bff97567ee77ca8107c5ebed18c6

  • SSDEEP

    1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLZ/xEdt:X6a+SOtEvwDpjBrOO

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 2 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-19_6a06e2ddf7e29c83de508024d9c96000_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-19_6a06e2ddf7e29c83de508024d9c96000_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1528
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4728

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    63KB

    MD5

    8b99c081fc04241f4b475dd7d7b15d5c

    SHA1

    7d04231e041dd3ef8ad60922b1d1fb63003b766c

    SHA256

    44afac0c4c0e36e896ae180f5c40a0973e7436004f39e0b2b08599bdba086ffb

    SHA512

    999a3db30e2f985713602b354c38affb6ff0db123a388ed9d3f603b15ed41a395195592a49e6fa7ab968b6a6371de6ccc9768d8bbc342be7cd73b518c82a64a9

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

    Filesize

    15KB

    MD5

    06cfc0b5f5f327270e1e26d8e87c0536

    SHA1

    5f441c40e6d8dd9c1e7ebe68a61dc5efe3e2b06f

    SHA256

    e1955afe0338cdead984123e26daaabf9db2db697f6bdcfe08bd07cb9a0902f8

    SHA512

    0072b62afd1c0b07d08cbf806d811d0a646b3694d3f4ed5fa653362a4c6c560f378c0bc69b47fc07f528aec07173ddabbb2039429ee6831622a3306d4b0eef4b

  • memory/1528-0-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/1528-1-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/1528-2-0x0000000000540000-0x0000000000546000-memory.dmp

    Filesize

    24KB

  • memory/4728-17-0x0000000000680000-0x0000000000686000-memory.dmp

    Filesize

    24KB

  • memory/4728-18-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB