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Analysis

  • max time kernel
    154s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/03/2024, 07:52

General

  • Target

    2024-03-29_911d1da623b309284744f61c0cd32dd0_cryptolocker.exe

  • Size

    50KB

  • MD5

    911d1da623b309284744f61c0cd32dd0

  • SHA1

    f6a0f1136cf8eaf5f4a61cced165d056f84eb06e

  • SHA256

    ca23dc265745a24a04818ea399d8370de141cbecea4e890fe3c9c7af94c47e1f

  • SHA512

    31e2a29de880e6c7d686990d885a50f4fa8600e0be811951b7f0fdd949b8b231492390b9e8db394e0ad2d0fc170b26778a87db26a893cfb7b96007d342650b48

  • SSDEEP

    768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dIKld5CSO/G:bgGYcA/53GAA6y37Q6dI+d5GG

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\2024-03-29_911d1da623b309284744f61c0cd32dd0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-29_911d1da623b309284744f61c0cd32dd0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:444
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:4780

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    50KB

    MD5

    5cf505422d8c922d060bb2c5baf692e7

    SHA1

    78012634ad50fa3600bc4ac9e4fb1ca13b0fd97f

    SHA256

    fcf5245846cf65b09ff6ec4e4eaf4a573210a942c577f34077c55ab53bbaac45

    SHA512

    deaca76b94c08364e0d5042ea4d0d6c2a57ce5b2f9ab0da7ef511f09b70e4546acefdca0a1175d9d9843dbe57c04482d4b108a6444668b3da7b9168ac2bb5916

  • memory/444-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

    Filesize

    24KB

  • memory/444-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

    Filesize

    24KB

  • memory/444-2-0x0000000003150000-0x0000000003156000-memory.dmp

    Filesize

    24KB

  • memory/4780-17-0x0000000002180000-0x0000000002186000-memory.dmp

    Filesize

    24KB

  • memory/4780-23-0x0000000000770000-0x0000000000776000-memory.dmp

    Filesize

    24KB