Analysis

  • max time kernel
    131s
  • max time network
    133s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/09/2024, 23:23

General

  • Target

    2024-09-07_2fc35344fffa849b2d7bc6d96cf58895_cryptolocker.exe

  • Size

    94KB

  • MD5

    2fc35344fffa849b2d7bc6d96cf58895

  • SHA1

    4027d8f2177373c8c0e911666769a44c446d9f0b

  • SHA256

    dac32198eb1eda1565f95f49f0f0f70545d8f94e78485b691435cee79097d9f1

  • SHA512

    53df140c27aa391d0a781ea610f1648e12762b8c3b541566a5d8ba8fb41b90856b960de9708fc777bb00577d82b778708b79e7b147bd7bf2cc9c458dac7d7b33

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/kz:zCsanOtEvwDpjBA

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\2024-09-07_2fc35344fffa849b2d7bc6d96cf58895_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-07_2fc35344fffa849b2d7bc6d96cf58895_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5048
    • 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:6080
  • 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=4768,i,2904906934812054273,11716976550456127484,262144 --variations-seed-version --mojo-platform-channel-handle=4360 /prefetch:8
    1⤵
      PID:1548

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      94KB

      MD5

      00d67eda7e99bfd13ab40b6be6057622

      SHA1

      571605845479ba6666e02f15e233f18d1d081135

      SHA256

      9da79fa4724a7a881dba18ff35d403db1101dbb5b8e121eb6958d6290607637e

      SHA512

      d86362a90cf2d6eb12bbd384f0460327a2d2e2d153d301b28509481b1e7d9c6c6295108d1035ddc63e6a7088d8f07d9696b52a81f99950aa3a7fd475e9667df8

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/5048-0-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/5048-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

      Filesize

      24KB

    • memory/5048-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

      Filesize

      24KB

    • memory/5048-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

      Filesize

      24KB

    • memory/5048-17-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/6080-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/6080-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

      Filesize

      24KB

    • memory/6080-48-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB