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Analysis

  • max time kernel
    147s
  • 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
    28/02/2024, 02:38

General

  • Target

    2024-02-28_5798129b90867e8beb3fd7f908119045_cryptolocker.exe

  • Size

    40KB

  • MD5

    5798129b90867e8beb3fd7f908119045

  • SHA1

    2a9cfce4c4685a7ffed148a18e008779cbc35697

  • SHA256

    4b52d1e7bc56361d89ca1519cd507c0fd0dc9c3d5325e373c2a460f4e53241b7

  • SHA512

    1ca113366975c33b55090bdaa980ab4fdb2efa5fa8b592d2c436290e35da1fd64fdc5783e66f6bb33046fa8845bf2e15f357702f76adbf933d2faf10e46fa5e9

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnISct/:m5nkFNMOtEvwDpjG8hgp+

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 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\2024-02-28_5798129b90867e8beb3fd7f908119045_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-28_5798129b90867e8beb3fd7f908119045_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4300
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:2044

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    5b81806536420e4086e37a9cadc6bfd2

    SHA1

    d0e865dfc97731bc4bc5ce37e909c96cca0b97e1

    SHA256

    7547b7667a67bbea5a55cc585f15cd519596fc201816f8f16129980f13c281ff

    SHA512

    5078d918b4b18ed3c04bbc62950a01ed31b3539f607c90c9005dd83fdf841e42e01d521c36d723763631baf0bd80e77a6d910fbed043d5e98633ac516a03ed3f

  • memory/2044-20-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/2044-19-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/2044-52-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4300-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4300-1-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/4300-2-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/4300-3-0x0000000002240000-0x0000000002246000-memory.dmp

    Filesize

    24KB

  • memory/4300-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB