Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/06/2024, 07:34

General

  • Target

    2024-06-09_d027de35ae2e38744ed08255a41bec8d_cryptolocker.exe

  • Size

    44KB

  • MD5

    d027de35ae2e38744ed08255a41bec8d

  • SHA1

    d30165479e20453eab74e9099a4f8172edf1e6a6

  • SHA256

    a1ad74dc64848ba32406c68e34533894feefe7c1eb1e41574b25bea3507d927c

  • SHA512

    35f14a3985d4e5f934dcbb6247892bac1563a972a13d24a5244f5eda715a68a5315c59010ea96a7d9b77185c372c13b278c48caaa1c9a10e7976c8ac7da87088

  • SSDEEP

    768:nf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGWXOQ69zbjlAAe:f1KhxqwtdgI2MyzNORQtOflIwoHNV2Xo

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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-09_d027de35ae2e38744ed08255a41bec8d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-09_d027de35ae2e38744ed08255a41bec8d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1996
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:4104

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    44KB

    MD5

    942f7117dc84ed6178563205a55ba8bb

    SHA1

    35eae2efa463683e444b83ed23ffc35aacc95e16

    SHA256

    5d017d31ad7dfe4378c54b903b04412c481f01ca129e57918145967d2b542f61

    SHA512

    61758961af268524f6484546a9a849104b3a9fa950ad9343ce84f01b4c55f05fef78fea92ca3ddd77a2a5c3cefd4b773607ac224979a39fef29f2ef942d187c9

  • memory/1996-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1996-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/1996-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4104-25-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB