Analysis

  • max time kernel
    143s
  • 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
    15/06/2024, 13:03

General

  • Target

    2024-06-15_7fb24cd3d26d48634b4013f1436cb1f2_cryptolocker.exe

  • Size

    74KB

  • MD5

    7fb24cd3d26d48634b4013f1436cb1f2

  • SHA1

    71bd833fec2e8529993dc3c1378af5a07ed4d352

  • SHA256

    721ed36cc120e9fad90d8173b51278eded32793c81ace450c338e106cd3cb821

  • SHA512

    166bda775efa527b7f370d8ae8a8179d702efe06cbc8a46d488c6ff6b9afd48c44f82a6f9127800a4748e1b736b46ea097b638251751bdbbbd055f2e271a59f4

  • SSDEEP

    768:9UQz7yVEhs9+4T/1bytOOtEvwDpjLXOQ69zbjlAAX5e9zU:9Uj+AIMOtEvwDpjLizbR9XwzU

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-06-15_7fb24cd3d26d48634b4013f1436cb1f2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-15_7fb24cd3d26d48634b4013f1436cb1f2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4656
    • 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:4300
  • 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=3712 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4960

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            74KB

            MD5

            64d1a9137cf4cc1e0081e5c3e56091e4

            SHA1

            7a175a1c9801500ec277a5a535627f495625b3c6

            SHA256

            caa94cc62b0ee31c90514bbbbad33761512cebda9b6045bca7df29a51162b562

            SHA512

            2d649cbc1f46ebaab2883d6aa3f9698271c2826be971323517091684f505ca1e2b9a118639b0a40a4f649dd8c1d4998750e4a536158a510f3f6b9e365f4279be

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

            Filesize

            315B

            MD5

            a34ac19f4afae63adc5d2f7bc970c07f

            SHA1

            a82190fc530c265aa40a045c21770d967f4767b8

            SHA256

            d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

            SHA512

            42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

          • memory/4300-17-0x0000000002070000-0x0000000002076000-memory.dmp

            Filesize

            24KB

          • memory/4656-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

            Filesize

            24KB

          • memory/4656-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

            Filesize

            24KB

          • memory/4656-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

            Filesize

            24KB