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Analysis

  • max time kernel
    88s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/02/2024, 18:21

General

  • Target

    2024-02-03_018ea4d649a9832ba28c440ca7d9a3f3_cryptolocker.exe

  • Size

    38KB

  • MD5

    018ea4d649a9832ba28c440ca7d9a3f3

  • SHA1

    a8a88f98da29629102bd4614e77e40321c513b51

  • SHA256

    1d023d7f4fb25ffcb7249d44ce7f57ac812e1bb71ad7ce4f772d5f4dc399e197

  • SHA512

    dd3b0943bd3994410f3667e8cd4cdbdae091905f9922209500bbd89bb178c2c1df3bd33ba5d161de50616dce85e2c47eb9c81fba8873f1b4ecbfbfe947e24e61

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/ysz1:i5nkFGMOtEvwDpjR+viDz1

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\2024-02-03_018ea4d649a9832ba28c440ca7d9a3f3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-03_018ea4d649a9832ba28c440ca7d9a3f3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3800
    • 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:2380

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    e888280aac15e203941f3b80efdc082b

    SHA1

    5cdc4585180405add4b4244cfb8c1e7ac8580cb9

    SHA256

    7100b145c4eca61aed6b987cf17c8705aff3515542c9049cc866fe29ac6d7a32

    SHA512

    0f6a692276c19b04cc964f2fe546f221a3563efd4a951743627d6c4e4582a192c38329ae5d1da3bf432a1122d6f95637ba2104d530fd391635ac8ce6fe8982c8

  • memory/2380-19-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/2380-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2380-52-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3800-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3800-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3800-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3800-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3800-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB