Analysis

  • max time kernel
    125s
  • max time network
    127s
  • 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, 03:41

General

  • Target
    2024-06-13_840fb44e4f309604558cb37e0895e156_cryptolocker.exe
  • Size 96KB
  • Sample240613-d8xp1swgpp
  • SHA256 9d72a4d02e56ac8a27e4a0992b455f095f1ff0e798fa55e18be63ede812508ed
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-13_840fb44e4f309604558cb37e0895e156_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_840fb44e4f309604558cb37e0895e156_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4160
    • 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:2132
  • 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=3684,i,10925946972013221578,8820669985803190952,262144 --variations-seed-version --mojo-platform-channel-handle=4308 /prefetch:8
    1⤵
      PID:4772

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          misid.exe

          • Path C:\Users\Admin\AppData\Local\Temp\misid.exe
          • Size 96KB
          • SHA256 63806f082257516b5da162d526b9081f37cda1f34d70e4c09107df5894b97b91
          • MD5 SHA1 SHA512 SSDEEP

          misids.exe

          • Path C:\Users\Admin\AppData\Local\Temp\misids.exe
          • Size 315B
          • SHA256 d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3
          • MD5 SHA1 SHA512

          memory/2132-18-0x0000000000500000-0x0000000000510000-memory.dmp

          memory/2132-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

          memory/2132-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

          memory/2132-49-0x0000000000500000-0x0000000000510000-memory.dmp

          memory/4160-1-0x0000000000630000-0x0000000000636000-memory.dmp

          memory/4160-0-0x0000000000500000-0x0000000000510000-memory.dmp

          memory/4160-2-0x0000000000650000-0x0000000000656000-memory.dmp

          memory/4160-9-0x0000000000630000-0x0000000000636000-memory.dmp

          memory/4160-17-0x0000000000500000-0x0000000000510000-memory.dmp