Analysis

  • max time kernel
    141s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/10/2024, 08:28

General

  • Target

    2024-10-31_9285980155582b2f4901448df7cd6606_cryptolocker.exe

  • Size

    94KB

  • MD5

    9285980155582b2f4901448df7cd6606

  • SHA1

    95a03f624b13990038a953c89838638ea6b0eb68

  • SHA256

    4d02b93768a5644902b42ed87a4e67d24c80e69aa346f28c6652508c5001a665

  • SHA512

    8c6c8e5351309282c5a39504cebadf0723164e2b902b6843e1db4601db779737ba6490b2a2515c2336685b818e61222c22cb2a6c67f78a23600fa7632a5cb8c1

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjuv5F:zCsanOtEvwDpjD

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-10-31_9285980155582b2f4901448df7cd6606_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-31_9285980155582b2f4901448df7cd6606_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1632
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:4416

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          95KB

          MD5

          cb1a15fd7c68a9f8c67d0969a3553dd0

          SHA1

          8017dd240571e08567be1edfb57d132d25067127

          SHA256

          013e214a76eaa5b3d84910af02819178697ef6579fd1a6de62f0ece0b6987bf9

          SHA512

          ccd956d8492154791675eae2e25d0cb53b8b869d18cf11330457ff250c12a2c31bd5f863db1a1d2e022d4eab1d861bb40af2d2f61341cb1a9a36777b643c94d9

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1632-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/1632-1-0x0000000002050000-0x0000000002056000-memory.dmp

          Filesize

          24KB

        • memory/1632-2-0x0000000002050000-0x0000000002056000-memory.dmp

          Filesize

          24KB

        • memory/1632-3-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/1632-24-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4416-18-0x00000000020F0000-0x00000000020F6000-memory.dmp

          Filesize

          24KB

        • memory/4416-25-0x0000000000560000-0x0000000000566000-memory.dmp

          Filesize

          24KB

        • memory/4416-48-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB