Analysis

  • max time kernel
    133s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-06-2024 02:24

General

  • Target

    2024-06-13_dcb07ee7f4f5a3e50d6f0355bc0c1d7d_cryptolocker.exe

  • Size

    50KB

  • MD5

    dcb07ee7f4f5a3e50d6f0355bc0c1d7d

  • SHA1

    f92d9e53f287d142b24de66cc9b4d1ea1e0031c7

  • SHA256

    c93bbd33633c7febcaa99ddf9b844314cff1f8afa1a023da3cb6ce63ed7b1427

  • SHA512

    880d4921c30bb103e93b9664a2dff9f61a2144f218311c9a6ee25b73e2a07ddca3d93b6502a7f85a0962b2921e7d7963a35a3511eec783904fd688476d40ea4e

  • SSDEEP

    768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vdXfxDD:X6QFElP6n+gJBMOtEvwDpjBtEdXfxDD

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-13_dcb07ee7f4f5a3e50d6f0355bc0c1d7d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_dcb07ee7f4f5a3e50d6f0355bc0c1d7d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3408
  • 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 --field-trial-handle=4304,i,12594301322143882025,16832588342008839449,262144 --variations-seed-version --mojo-platform-channel-handle=4296 /prefetch:8
    1⤵
      PID:4460

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      50KB

      MD5

      623a5a4df126467de569c585c0d96da4

      SHA1

      c6aabb372298d0425e93755a32880bef35c0e0e0

      SHA256

      2a9ff92940b177389fceebdc13d09a0ea937b259cac4447397cf263abb41491a

      SHA512

      328a308ad5302414a64751e49ab490c9fe891b1751b4920d574dca87b617757ea8890bc20232aea832482f87b6ca1d224b122b469f4fff191c4e4e992ae45b9b

    • memory/2044-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

      Filesize

      24KB

    • memory/2044-2-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/2044-1-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/2044-8-0x00000000004E0000-0x00000000004E6000-memory.dmp

      Filesize

      24KB

    • memory/3408-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/3408-17-0x0000000000750000-0x0000000000756000-memory.dmp

      Filesize

      24KB