Analysis

  • max time kernel
    143s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/06/2024, 01:08

General

  • Target

    2024-06-11_8e9c2db7aa0c4f9d3f7164834c548005_cryptolocker.exe

  • Size

    43KB

  • MD5

    8e9c2db7aa0c4f9d3f7164834c548005

  • SHA1

    99451b3cc3ef621ccf53786beb0c401bb3813f2b

  • SHA256

    df777fe1a9a79230aa7ec773f73524b86442592a2367a303b5cabded39c4de1c

  • SHA512

    a2cf5f27e9b5bed27a41f5f86b83dd637bc46ceed1e02c87d05c19e2e3afcb604f1485a903a64807cce766c89a63f11b8a3e7de65c64e206bb3d0849caea3f9e

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYshNh5:i5nkFGMOtEvwDpjR+viHshN/

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-11_8e9c2db7aa0c4f9d3f7164834c548005_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_8e9c2db7aa0c4f9d3f7164834c548005_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4840
    • 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:940
  • 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=1408 --field-trial-handle=2276,i,5697607538120380977,9987005253899555344,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4128

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            43KB

            MD5

            c45d72d1d1ec83d5f82f4200b20ed103

            SHA1

            737947fc5878ea4c6ac59dbea8fa782feb80e796

            SHA256

            e916811d40e64f6a4b0a327d8cd470eb81f0625af157ef25f94ae44dc02a3d8f

            SHA512

            26bf459d6dca11e843e15b8871d27ed04ed224351665d7e570cfbc7b3cf7cf2b84ddae8b4c26782d5a42d20af0bfc676df11526d9214954540b2a356fa59646d

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

            Filesize

            315B

            MD5

            a34ac19f4afae63adc5d2f7bc970c07f

            SHA1

            a82190fc530c265aa40a045c21770d967f4767b8

            SHA256

            d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

            SHA512

            42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

          • memory/940-18-0x00000000005B0000-0x00000000005B6000-memory.dmp

            Filesize

            24KB

          • memory/940-19-0x00000000005D0000-0x00000000005D6000-memory.dmp

            Filesize

            24KB

          • memory/940-48-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB

          • memory/4840-0-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB

          • memory/4840-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

            Filesize

            24KB

          • memory/4840-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

            Filesize

            24KB

          • memory/4840-3-0x0000000002230000-0x0000000002236000-memory.dmp

            Filesize

            24KB

          • memory/4840-25-0x0000000000500000-0x000000000050F000-memory.dmp

            Filesize

            60KB