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Analysis

  • max time kernel
    132s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/05/2024, 01:27

General

  • Target

    2024-05-14_a52ecceb7b2e675061a14f68a9fa075b_cryptolocker.exe

  • Size

    43KB

  • MD5

    a52ecceb7b2e675061a14f68a9fa075b

  • SHA1

    21f5cedde8f3dfad5c6ce86d3328784dd0c770f1

  • SHA256

    b721bc7b4c96b0f6aa04414f073fe6ef23887dc7d7257e8a00f5e33807554cde

  • SHA512

    33a957aeb6cc9abd8eb223166b976fce61de52f7fd9c2e8649a4341257ae50b4da0db8b22a349b9e91c8760cc7aa848213b702be9cb553964977c75df29751d9

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4REL+cc66TcQ:vj+jsMQMOtEvwDpj5HW5scQ

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\2024-05-14_a52ecceb7b2e675061a14f68a9fa075b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-14_a52ecceb7b2e675061a14f68a9fa075b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:800
    • 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:1840

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    43KB

    MD5

    56c06fba9dd97c08c52493f9b2a23a69

    SHA1

    c4519417695c1e7fafce781e47a8bb7a7d52cc97

    SHA256

    95ac444359d05d0cb8d404fcc8dd2147fdb650b46d81e83807e104cd16b6c0a0

    SHA512

    425e90ce853556923026f36d5f19b5a3d9d58ff5cc8d8a37de07cb08e6b16c9fadc6f1a597d249abd16916a7b69c13729d24e73692bb29ba1a02942eddef4f4f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/800-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/800-8-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/800-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/1840-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1840-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB