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Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/05/2024, 00:42

General

  • Target

    2024-05-24_ba7cbc1a8dc6e2a58d1d49352df43562_cryptolocker.exe

  • Size

    42KB

  • MD5

    ba7cbc1a8dc6e2a58d1d49352df43562

  • SHA1

    926e54204553839cea2822232f0a895835374484

  • SHA256

    6983c69fabd76b78e6b89a8216ae75a29fd474ea4ffac5f26e845e6be8bba83f

  • SHA512

    575165c068f0cc1655655154c41e86d45a4ce0ed0868e277dd6593e2eb6b3f141ffb6d3f2ceb26d44ac2fd652f07087e69e01897381a76ef837fcfca2dcdeb0d

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYshNhn:i5nkFGMOtEvwDpjR+viHshNB

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-24_ba7cbc1a8dc6e2a58d1d49352df43562_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_ba7cbc1a8dc6e2a58d1d49352df43562_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3152
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2772

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    42KB

    MD5

    56eda08e8a7040a9f9ed03bc661503e9

    SHA1

    d13bb3c5758568442bcafad817ea6b1cf19bbb41

    SHA256

    0658095b8b6ffd11a8e1d5d5ddfc1360bcca1b19a43cfb638cbeb467ed97e28f

    SHA512

    9b8779b8c600018cc6ff1c837abc67fc7c0e9eb4a18a30fc48a8ccfeb981af07ddbc7e84160eb6bd7b90fc54a1968d31487a15384498c1748c6e0e2fe73017eb

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2772-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2772-20-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/2772-21-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/2772-52-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3152-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3152-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3152-2-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3152-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3152-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB