Analysis

  • max time kernel
    146s
  • 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
    15-03-2024 13:54

General

  • Target

    2024-03-15_9cc0d5d086f789dfd2fc4fbd5232d0d3_cryptolocker.exe

  • Size

    87KB

  • MD5

    9cc0d5d086f789dfd2fc4fbd5232d0d3

  • SHA1

    f9ae0fc38db2cb5579da7079b4d0dfcf4c3bf21f

  • SHA256

    5072b322649fd2ba89220ab24448035fa1db78a19705cc9e4b40c48c1a8ea65f

  • SHA512

    56a536ad529ccad5a66b2c4291993fd715ee4c8a030289ae46644e35e048757ac9b28027ce5fcd02a73f84c207eba623cdbb11e7b24a3e67312e913ef3c9de79

  • SSDEEP

    768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIJ/q:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgn

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-15_9cc0d5d086f789dfd2fc4fbd5232d0d3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-15_9cc0d5d086f789dfd2fc4fbd5232d0d3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2784
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3252
  • 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=4056 --field-trial-handle=2272,i,11831746627654527593,10138103687018060346,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2304

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      87KB

      MD5

      dcf561b9f7640aa16e18c70a00f1d822

      SHA1

      a379380d19685082785024a3cb801f2fdc38b678

      SHA256

      fa5beb99492280ad4e15195062286fa36ab8cf0b8e8e6c86e099d86d03ebce86

      SHA512

      1fdfd03310e2146f4cda2a196d378e65ca7160beb3bb9c41df0f074ec3b48fe681694a63ba9b227ab45fbc3588443ed41723a3d4fd65ee42390ea30fc0a43bc9

    • memory/2784-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/2784-1-0x0000000002050000-0x0000000002056000-memory.dmp

      Filesize

      24KB

    • memory/2784-2-0x0000000002050000-0x0000000002056000-memory.dmp

      Filesize

      24KB

    • memory/2784-3-0x0000000002070000-0x0000000002076000-memory.dmp

      Filesize

      24KB

    • memory/2784-18-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/3252-20-0x0000000002000000-0x0000000002006000-memory.dmp

      Filesize

      24KB

    • memory/3252-17-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/3252-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

      Filesize

      24KB

    • memory/3252-27-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB