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Analysis

  • max time kernel
    154s
  • max time network
    167s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/01/2024, 23:03

General

  • Target

    2024-01-18_8cf547c807ade177842b5bdb8b6d581b_cryptolocker.exe

  • Size

    58KB

  • MD5

    8cf547c807ade177842b5bdb8b6d581b

  • SHA1

    a0106d7f6343c594948e73a3d52f872f8285e9a0

  • SHA256

    26b765ec77613dd198b854e6e4578d264ccf6b8af8f8a8eb32e6c97f9e6f4bc2

  • SHA512

    d74b603f77c48660460ec85ba623648a38613149044e85084b37db81de0286b1dc726d02401d63c42585517288b9677a8e0caf7a58a32e1e7148cd031f15bd78

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb614f:BbdDmjr+OtEvwDpjMU

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • UPX dump on OEP (original entry point) 4 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\2024-01-18_8cf547c807ade177842b5bdb8b6d581b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-18_8cf547c807ade177842b5bdb8b6d581b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5016
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4760

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    58KB

    MD5

    9f51e8a4b5b233f7e08f66bbdf1ded3a

    SHA1

    685ed24e60918f88c5686c469f6c954e786e5273

    SHA256

    fdffabaecaecb0bb8721ed606f5e078a15f77925e8b20ca8ce8ed022ea3cd19f

    SHA512

    c2828e7cd15dda5e1870a890d9a7d5d8471d031dc455298b90c932dd0bf6a47cd52a32b2e6eb4b6b19d189d3713bfa9129d59bf99a130cbe4518e54400f25c72

  • memory/4760-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4760-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4760-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/5016-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/5016-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/5016-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/5016-3-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/5016-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB