Analysis

  • max time kernel
    140s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/05/2024, 22:27

General

  • Target

    2024-05-01_ee70be7dbd1150941cada98b0c6038ef_cryptolocker.exe

  • Size

    55KB

  • MD5

    ee70be7dbd1150941cada98b0c6038ef

  • SHA1

    fde73776093984d9cc4367bbaee066ac2ebc6fa7

  • SHA256

    61570a44a91d042e01ca9ba65e51aeaaca6988666da29ac386c2ebe2d8c5b5ed

  • SHA512

    07d8f567c796ade45f6b40856fe68ee35b04cdcd9e2f53effec4e793b955cf678b4c7cfae873996decb9371e92af5d914e88cc704e5e7458bd1daff6a21f892f

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5QJz7/eKR0:6j+1NMOtEvwDpjr8oxExeKO

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-01_ee70be7dbd1150941cada98b0c6038ef_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-01_ee70be7dbd1150941cada98b0c6038ef_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3104
    • 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:4596

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    56KB

    MD5

    1205fc9e3c4d7981be6feb38ab009a7b

    SHA1

    82af49129332e1b88aea98bd8d3823bad9c49a60

    SHA256

    125af9a796edfc81e8ba6878ae83a9bc58fd16b917b9772662903c284181d3da

    SHA512

    3333413ee1a7b6b35e9bc24e942892a6a5afbc257580f597b90f4ccfa3bdb97dac144024415463f63410d784aba2d3661f860ac2a9db76d88137f10d68c2d5ee

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3104-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3104-1-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/3104-7-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/3104-2-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/3104-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4596-19-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4596-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/4596-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB