Analysis

  • max time kernel
    141s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 18:51

General

  • Target

    20240521f0e442e3b9dbb1f0f3fb04f835b9cb19cryptolocker.exe

  • Size

    37KB

  • MD5

    f0e442e3b9dbb1f0f3fb04f835b9cb19

  • SHA1

    77e45166128ee3262748082fae51203135e85300

  • SHA256

    6ebb26a5ec3986e65fe97a69d25cb8295a027500ed6a28654cb82c3af94d1297

  • SHA512

    a3b05061e8258dfcef830f3af838eacbfdee72733682d0399494e0e040bd5fa8be2d22fa88d24adf499b899ee2ae363322a0bbc77d5b8bcc4bff47e1956ad0f5

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4W:fT+hsMQMOtEvwDpjoIHW

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).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20240521f0e442e3b9dbb1f0f3fb04f835b9cb19cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\20240521f0e442e3b9dbb1f0f3fb04f835b9cb19cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2960
    • 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:2496
  • 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 --no-appcompat-clear --mojo-platform-channel-handle=4092 --field-trial-handle=2280,i,716736634476467098,11449718822158202904,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3800

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      37KB

      MD5

      41ad570a55c46e34edf8029820f1f070

      SHA1

      cc020fea461516a24fc1ea1b4f178d0eb4fdaa42

      SHA256

      12f358caebe313e591d5518cf6ed96665703fd14373e04e38a930e7e80b21832

      SHA512

      c6643ec4900a0d414cce16320e693b2207b878a04e5f671a9a745d14131965f44ba20558a6d0b2fd6fde76649cd1d5fce6afd10ce626d1fc039077d8f35313d4

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/2496-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/2496-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/2960-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

      Filesize

      24KB

    • memory/2960-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

      Filesize

      24KB

    • memory/2960-2-0x0000000000600000-0x0000000000606000-memory.dmp

      Filesize

      24KB