Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 00:34

General

  • Target

    2024-05-22_7e4b3258d97c429d7d5abc580e1458cb_cryptolocker.exe

  • Size

    77KB

  • MD5

    7e4b3258d97c429d7d5abc580e1458cb

  • SHA1

    bdf03f99f69c69151552b6717789d97e2762f1bb

  • SHA256

    77c838eb75f18fc94df0a28313111855527590dcbae043a7db8e12cbc77eb845

  • SHA512

    3a31b7af2fd7be6477c53d50e2653fec0b8d2ecc38603aee594da558478e918c177e6f5a14195912b8811931685ff512290cfb828c5132060a63b6aa1f2efcaa

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIufZ:vCjsIOtEvwDpj5H9YvQd2N

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-05-22_7e4b3258d97c429d7d5abc580e1458cb_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_7e4b3258d97c429d7d5abc580e1458cb_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3088
    • 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:1560

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    78KB

    MD5

    7f5f12ae98198c1f400c3853346be55f

    SHA1

    df5a691d9fc629b18c413cf48a7fa2b0f2a84320

    SHA256

    1b1f37a794ec7a5729492acad026b7dfdc9c55779092301a9387cbba8f6011e4

    SHA512

    da1e0f12caf5e1e7080f4997af91ce1d1c54f9283ecf3fd7b5ef3991cc4599d719149b02ae3dc9f0188e3eefc9b9aa30e7c876e21a5cd3ccea4f419b713be7a6

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1560-23-0x00000000021E0000-0x00000000021E6000-memory.dmp

    Filesize

    24KB

  • memory/1560-17-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/3088-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3088-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3088-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB