Analysis

  • max time kernel
    141s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-04-2024 00:59

General

  • Target

    2024-04-30_c0c0d9553a575a6acb52ce86a1facace_cryptolocker.exe

  • Size

    65KB

  • MD5

    c0c0d9553a575a6acb52ce86a1facace

  • SHA1

    eabe9abc5d8986ad6d3dffdb41551b467807019b

  • SHA256

    716a17c37b60dbbe5226c739ae9176fc14665e90212ddd40b0cc193d8145743a

  • SHA512

    9a7a1ad978ca8860bca7ee6fad6f601ed9c21b90b7604a53afeae98dc43f3e0394eb0806ef3b6aa86a45a2a0cd02411655ca13974e42f7da5bab390dee820f61

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2l9tMPvdfGyz:TCjsIOtEvwDpj5HE/OUHnSMYY

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • 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\2024-04-30_c0c0d9553a575a6acb52ce86a1facace_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-30_c0c0d9553a575a6acb52ce86a1facace_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2320
    • 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:2256
  • 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=1340 --field-trial-handle=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2292

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      66KB

      MD5

      4b353152fabdc601866a640a02a4ffd9

      SHA1

      8a5234b835204d8dc51f7c8284d0d70100463163

      SHA256

      862d07496f48e2c69d8032e56971207d39152c59a03f7c16acf61c0fee0e39ed

      SHA512

      578a01a4c123b46e4d914ee1eddc363f602cecf51966f6abe8a2797319e4d62525ba887f7e72efec33c7272423c45de51c6bfa11e0ea383808b5185489a5b354

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/2256-17-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/2256-20-0x00000000006B0000-0x00000000006B6000-memory.dmp

      Filesize

      24KB

    • memory/2256-21-0x00000000006D0000-0x00000000006D6000-memory.dmp

      Filesize

      24KB

    • memory/2256-49-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/2320-0-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB

    • memory/2320-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

      Filesize

      24KB

    • memory/2320-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

      Filesize

      24KB

    • memory/2320-3-0x0000000000610000-0x0000000000616000-memory.dmp

      Filesize

      24KB

    • memory/2320-18-0x0000000000500000-0x000000000050E000-memory.dmp

      Filesize

      56KB