Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/03/2024, 18:56

General

  • Target

    2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe

  • Size

    49KB

  • MD5

    ae4ed7d2da881f0cd252ef93f4fdb6ed

  • SHA1

    a7432564f9f332255da07763fe3d5e5281ad66de

  • SHA256

    1a07d36518f9de32a3b29c083e553e21f6b03b34201920480c8f9b820968a336

  • SHA512

    59139134df7bae3dde5707162691285a1bacc8310418f4fccab083b356b749a635600f4a692dec85749a80412ba5f8acd0640dae82feec109c1a051108ac4541

  • SSDEEP

    768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dIKld5CSn:bgGYcA/53GAA6y37Q6dI+d5v

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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\2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3724
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:3884

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    49KB

    MD5

    662c242adf7899b48754724fd9523ec5

    SHA1

    f429b46b62322922eddc5dc78461bced5a8155a1

    SHA256

    d8f472c7bb7a15e20c512a76f7ab052dc337e2524d1def0102d07d002c38ec4f

    SHA512

    108cb70b956ebb0dcd470dad61fc4d42344f1e220a1596ac490c1859d760472c8a4cefc5b09da35a5993111348eeef09bb21895e6f983ba983c603635d9b7c19

  • memory/3724-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

    Filesize

    24KB

  • memory/3724-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

    Filesize

    24KB

  • memory/3724-2-0x0000000003150000-0x0000000003156000-memory.dmp

    Filesize

    24KB

  • memory/3884-17-0x0000000000700000-0x0000000000706000-memory.dmp

    Filesize

    24KB

  • memory/3884-18-0x0000000003010000-0x0000000003016000-memory.dmp

    Filesize

    24KB