Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-02-2024 06:40

General

  • Target

    2024-02-25_c4d95b2dad5e054e8792667f8a0a29dd_cryptolocker.exe

  • Size

    40KB

  • MD5

    c4d95b2dad5e054e8792667f8a0a29dd

  • SHA1

    d9a535b56d154f7556c82fec7a14ef70ad863258

  • SHA256

    4c9631ac3b186024f44e8a66bd46409b044bdb8ac650e2f3619dd0b04abeec97

  • SHA512

    f7aa1d5587111c83f7314f474513fe474c99d062df4a3357bdc93caab7d330d1be9d9b89d93997f20adbd61c4f7e969315518b4061e802711b4bc21440f6d230

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRY/31:m5nkFNMOtEvwDpjG8hhXy/l

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 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\2024-02-25_c4d95b2dad5e054e8792667f8a0a29dd_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-25_c4d95b2dad5e054e8792667f8a0a29dd_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1844
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:3444

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    e3ea87b4039663bc31863e40b5d46c4f

    SHA1

    e4aa32c167249333a0e80c44370d7602ec510568

    SHA256

    7a9dc1b11dbaf979d20886310f44c8ba32a1177862817ad649fc4ad6fac299a4

    SHA512

    f0f2b3863dd03008726742a6f6307d65b13d6fe94c50e32be241a943a2a0b4e47ce60dd3b1a864f53b1b0ccaec570734a3f6761627c8688233a15ad463fe9f39

  • memory/1844-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/1844-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/1844-2-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/1844-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/1844-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3444-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/3444-22-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/3444-26-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB