Analysis

  • max time kernel
    124s
  • max time network
    128s
  • 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, 03:32

General

  • Target

    2024-09-19_7fcc79850ed62c3307b934f07add41e1_cryptolocker.exe

  • Size

    61KB

  • MD5

    7fcc79850ed62c3307b934f07add41e1

  • SHA1

    3e5412fb7e2c1e04799d1abcb7d236159d19fcb8

  • SHA256

    cc509668b5578e94ca9f6ef78d8bd45a5f5d84aa9452097e5dd9c1fad0d73704

  • SHA512

    99e88d6cf8d6753792c39a53a507ed4ff2a1c9d8429e0df68281d76ad8e4fbe3a33baef541d5285f5d459a89d90377b0566d71cb1dd539a8f47b12d108998df3

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7Mz6+5:xj+VGMOtEvwDpjubwQElm

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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-19_7fcc79850ed62c3307b934f07add41e1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-19_7fcc79850ed62c3307b934f07add41e1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1664
    • 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:2576
  • 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=4372,i,3239535018877284530,3457823197501312703,262144 --variations-seed-version --mojo-platform-channel-handle=1036 /prefetch:8
    1⤵
      PID:644

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      61KB

      MD5

      414fd5c26dbcade48ab24ee0f36754c4

      SHA1

      ae5530236bb373f3be0889f727fd69f165918dcb

      SHA256

      8bdee6cc984217b2de90ee48e285bcfd618265a76d9d7cce2da31fa0e30fe5e0

      SHA512

      9e7efe07ea58133d573ffb46ae79d031991b1caff76c46cc1552ea5c6c0721ad07351456effaa64e85d924422ea28df2bef4dc4177c861430069b16dfdd78d35

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1664-0-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/1664-1-0x0000000000620000-0x0000000000626000-memory.dmp

      Filesize

      24KB

    • memory/1664-2-0x0000000000620000-0x0000000000626000-memory.dmp

      Filesize

      24KB

    • memory/1664-3-0x0000000000650000-0x0000000000656000-memory.dmp

      Filesize

      24KB

    • memory/1664-17-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/2576-19-0x0000000000810000-0x0000000000816000-memory.dmp

      Filesize

      24KB

    • memory/2576-20-0x0000000002100000-0x0000000002106000-memory.dmp

      Filesize

      24KB

    • memory/2576-48-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB