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Analysis

  • max time kernel
    125s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/09/2024, 04:24

General

  • Target

    2024-09-09_377f37d319a3c26b53117b821e9c7303_cryptolocker.exe

  • Size

    64KB

  • MD5

    377f37d319a3c26b53117b821e9c7303

  • SHA1

    b015464df657104b556d43724e7d060c67736a53

  • SHA256

    d5b7a81b12ce158217b45301eef522b8391a2d55ab229600e8247745be6c74f2

  • SHA512

    198c0f4cdca2feca302d35b0b3e49fbba3aa34d00a96068c35f48ba0e8c90b39d06fc4c482e0b9ccb1469256e706902c5f983888298e6e737429e2fdcc5b955d

  • SSDEEP

    768:0Qz7yVEhs9+syJP6ntOOtEvwDpjFSXOQ69zbjlAAX5e9zw:0j+soPSMOtEvwDpjwizbR9Xwzw

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-09_377f37d319a3c26b53117b821e9c7303_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-09_377f37d319a3c26b53117b821e9c7303_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3320
    • 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:1632
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1020,i,12470628711992022444,7767535593390851522,262144 --variations-seed-version --mojo-platform-channel-handle=4084 /prefetch:8
    1⤵
      PID:4360

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      64KB

      MD5

      ad74b33d1e97722f9176868d1ce50031

      SHA1

      933c03fca7b6ca3aa6a7e60e34f223ea59040f16

      SHA256

      04b09c2e183b9d706408aa47e540c43d4be691c795c935849d391fd1fb6e53bf

      SHA512

      e6b36b8bfccd4aec92843aa862e1ac82b18526deb90e1b0adc27c1516af047cc65c7560fefde5c7694d83c449abd72f106779634e35dd814811c5c40409796ce

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1632-19-0x0000000002150000-0x0000000002156000-memory.dmp

      Filesize

      24KB

    • memory/1632-20-0x0000000002070000-0x0000000002076000-memory.dmp

      Filesize

      24KB

    • memory/1632-48-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/3320-0-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/3320-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/3320-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/3320-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/3320-17-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB