Analysis

  • max time kernel
    144s
  • 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
    10/04/2024, 13:34

General

  • Target

    2024-04-10_71f73868815db4b0e4bab76a49452079_cryptolocker.exe

  • Size

    47KB

  • MD5

    71f73868815db4b0e4bab76a49452079

  • SHA1

    eeaff538587832618075aea5e5eab7371f98e80e

  • SHA256

    a95edad8cb488f3c167d74241867ed438747e57fe1c528203981951786a77dba

  • SHA512

    0837baaaf6c92414ff0e422ef36a73719222bbc76d78b6d5ce2bcaeb667f53d97670745dde122c00ddc5fc006e603bf86bdd16cefd288db8856a4a67d361ad1a

  • SSDEEP

    384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/BdmRi:XS5nQJ24LR1bytOOtEvwDpjNbP/bmw

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-10_71f73868815db4b0e4bab76a49452079_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-10_71f73868815db4b0e4bab76a49452079_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:224
    • 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:4472
  • 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=4124 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4580

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            47KB

            MD5

            b2a8b219902b3472a96ae3d10b65c37c

            SHA1

            d7df7f5e5c149943c4d87a040e406eb50b1ef973

            SHA256

            232b7433ac039ee07aa023086900f404cdc9b43e1fb51e2f21445925a345c127

            SHA512

            f9f6aa826528d968eea03235efe589354ed42ebc4ba0429d153c42249ebb9aaece02b408c58601413bf373f0ce15cb0654c5f4b5f08b6b2428f8a297f3be0d58

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

            Filesize

            315B

            MD5

            a34ac19f4afae63adc5d2f7bc970c07f

            SHA1

            a82190fc530c265aa40a045c21770d967f4767b8

            SHA256

            d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

            SHA512

            42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

          • memory/224-0-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB

          • memory/224-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

            Filesize

            24KB

          • memory/224-2-0x00000000006F0000-0x00000000006F6000-memory.dmp

            Filesize

            24KB

          • memory/224-3-0x0000000002240000-0x0000000002246000-memory.dmp

            Filesize

            24KB

          • memory/224-12-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB

          • memory/4472-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

            Filesize

            24KB

          • memory/4472-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

            Filesize

            24KB

          • memory/4472-49-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB