Analysis

  • max time kernel
    125s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-10-2024 07:40

General

  • Target

    2024-10-02_ef3ebbd81718d74006b46568ab842172_cryptolocker.exe

  • Size

    68KB

  • MD5

    ef3ebbd81718d74006b46568ab842172

  • SHA1

    1c69638ed197cc58c832a03e18c9e4c6cd88c109

  • SHA256

    ac47c92971999788a573899336410ebda90df566a482100e5bcac9604f159065

  • SHA512

    bf5a1c10126a5ea49aebb6362caf0382fd36c0b72491892cfe402de83153c07930219b9c4658c1e5c46c944853b77da4c6b1f503e0104a006c3e291d0b4e3941

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xFIQR:6j+1NMOtEvwDpjr8ox8UDEpN/jXR

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
  • 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\2024-10-02_ef3ebbd81718d74006b46568ab842172_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-02_ef3ebbd81718d74006b46568ab842172_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3748
    • 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:1972
  • 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=4400,i,3239535018877284530,3457823197501312703,262144 --variations-seed-version --mojo-platform-channel-handle=4420 /prefetch:8
    1⤵
      PID:3952

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      68KB

      MD5

      ef84407d3b4c1644c74d043f59551ec4

      SHA1

      9252332dbb5a299bc4b5eb5f34c9a72f634970a9

      SHA256

      34b5b7bee51f40b6b9c9c1b8f9956cc4ff79fec021d40daac36eff8c094e6c97

      SHA512

      a7c219c99ebeb661243fc56cce4bdf7a31bb8c8500d748e5cbbe661f9c21013ef43e813cc912b7907b9e5b0a9ae43f7d96569b4b3bf3dc4d40cbbb11fc3fcd47

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1972-17-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/1972-20-0x0000000001F70000-0x0000000001F76000-memory.dmp

      Filesize

      24KB

    • memory/1972-26-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/1972-49-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/3748-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/3748-1-0x0000000000670000-0x0000000000676000-memory.dmp

      Filesize

      24KB

    • memory/3748-2-0x0000000000670000-0x0000000000676000-memory.dmp

      Filesize

      24KB

    • memory/3748-3-0x0000000002240000-0x0000000002246000-memory.dmp

      Filesize

      24KB

    • memory/3748-19-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB