Analysis

  • max time kernel
    125s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/09/2024, 04:31

General

  • Target
    2024-09-19_a1558df861221a5e24b0a741a809571e_cryptolocker.exe
  • Size 50KB
  • Sample240919-e5lc9a1crf
  • SHA256 76fe15e8302daf36dffca8a3c674f5d198851c415146a770ac6aabe23f7a3903
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-19_a1558df861221a5e24b0a741a809571e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-19_a1558df861221a5e24b0a741a809571e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2704
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:3160
  • 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=4324,i,8293235976513689021,7261015831736501466,262144 --variations-seed-version --mojo-platform-channel-handle=4336 /prefetch:8
    1⤵
      PID:4480

    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 51KB
          • SHA256 af399bec1fb6d8120e7ad8680796d62719c4ebbc543d7c5177e4b2dbae8fb10c
          • MD5 SHA1 SHA512 SSDEEP

          misids.exe

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

          memory/2704-0-0x0000000002300000-0x0000000002306000-memory.dmp

          memory/2704-1-0x0000000002300000-0x0000000002306000-memory.dmp

          memory/2704-2-0x0000000002220000-0x0000000002226000-memory.dmp

          memory/3160-21-0x00000000004E0000-0x00000000004E6000-memory.dmp

          memory/3160-17-0x00000000006E0000-0x00000000006E6000-memory.dmp