Analysis

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

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/05/2024, 05:21

General

  • Target

    2024-05-11_f70955c54af42dd0e0d1af5faac17374_cryptolocker.exe

  • Size

    96KB

  • MD5

    f70955c54af42dd0e0d1af5faac17374

  • SHA1

    7e4ce447f1d87a121df8d1b7fd9fe4a8b1df5e27

  • SHA256

    2e86c38174633736af598b022bac66dd0b02a115eda2f2e2a37663e94b99d8f2

  • SHA512

    063f2861444ee3c11e4ba14b55b59af7d6f5bb95b43562593df5994462b7dcd67eff89ac6e3b8ecbc210d4472959396fc49c1beab3784ae673e81f4a3418d93e

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJyqdO5:xj+VGMOtEvwDpjubwQEIiVmkuqc5

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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\2024-05-11_f70955c54af42dd0e0d1af5faac17374_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-11_f70955c54af42dd0e0d1af5faac17374_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4884
    • 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:2152

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    96KB

    MD5

    2f95e80b563c425f881fafaf3359a7bd

    SHA1

    272c52408fefd92aee1f9fe5d274452c989e60e4

    SHA256

    2c9eb71d40fa3a907d9afc75b1cf8bf0a35f1cd3ec0bbf6e05f2b29074447465

    SHA512

    3c7a6a813a4c6abf556c57df1c8eceef03fde4d4d3010376bf9d73c9f2bdc3e4999c1f5a437dff5ef58caf78201744dacc0f44fbd1a8165956a468c23715f5d0

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2152-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2152-20-0x0000000000650000-0x0000000000656000-memory.dmp

    Filesize

    24KB

  • memory/2152-26-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/2152-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4884-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4884-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4884-2-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/4884-9-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4884-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB