Analysis

  • max time kernel
    93s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/04/2024, 16:30

General

  • Target

    2024-04-05_3ccd389ab0ea2c069b552b1d3d258d39_cryptolocker.exe

  • Size

    101KB

  • MD5

    3ccd389ab0ea2c069b552b1d3d258d39

  • SHA1

    3dd5e967cdaab82094e4626610ae3d4584a0a420

  • SHA256

    1995fadad0103bef7b99103f26df88dff6df6775076cf0b3037e31a03adab70c

  • SHA512

    6141ae37fd61a40abe30868af0edf74af85392dba77a8c9ef80db31a80d78311a83d9c2c0f542d7561ca10c82527e4eed2d777c95f9c2313fa040032f65a133b

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRiWjzUNoSQJ:i5nkFGMOtEvwDpjNbwQEIikgNg

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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-05_3ccd389ab0ea2c069b552b1d3d258d39_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-05_3ccd389ab0ea2c069b552b1d3d258d39_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2652
    • 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:2852

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    101KB

    MD5

    530bdb54fcd199ee070382674c35579c

    SHA1

    d86cf1147bd5b0022f2943648507e56e00defb80

    SHA256

    cb27d6cd8359dc9e34bc02b1755282323ffdbdc5242159f4a8fd360ac677bbff

    SHA512

    b1c81466a4b3603383858aa6c199e3c54f13721b639939297cb6c3745529a8cd699eb8d009b4c21b1c427cea260d08110c0a55ffc6c1e14225186bf3e8530a4e

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2652-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2652-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/2652-2-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/2652-3-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/2652-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2852-19-0x0000000002110000-0x0000000002116000-memory.dmp

    Filesize

    24KB

  • memory/2852-21-0x00000000020E0000-0x00000000020E6000-memory.dmp

    Filesize

    24KB

  • memory/2852-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB