Analysis

  • max time kernel
    125s
  • 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
    07/09/2024, 06:51

General

  • Target

    2024-09-07_d5a8f55e0d1ad8b0455c5afcd815611f_cryptolocker.exe

  • Size

    82KB

  • MD5

    d5a8f55e0d1ad8b0455c5afcd815611f

  • SHA1

    0fac5310d86c1d3db6834a296ef2ee59be986237

  • SHA256

    b0f47429f4298daede9232f4b54630f506ae2b167efa8e569641cddc329b559c

  • SHA512

    b05acfe3024a7f2a26b9dc28bdb00a070c1f6f3e5f589fdce554dbe9e614a184a3dbfd0b64e1d3cfc4d39b2adf02e5f44afd2875381684916592eea743c76a85

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7Qi:zCsanOtEvwDpje

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
  • 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).

  • 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\2024-09-07_d5a8f55e0d1ad8b0455c5afcd815611f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-07_d5a8f55e0d1ad8b0455c5afcd815611f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4220
    • 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:4200
  • 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=1320,i,1330210614411927383,9239043499051775691,262144 --variations-seed-version --mojo-platform-channel-handle=4460 /prefetch:8
    1⤵
      PID:3212

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      82KB

      MD5

      26ac01f227bcb2c9751c985d4d3841f7

      SHA1

      86769a7868cfd9901c93aac696e89571ba596024

      SHA256

      14ca0b632a20fc8fe3bdba54b540e3753caeb18eefd64f24b4c865c4ebe80754

      SHA512

      339e45009994b6df4f20f31ba31daa9b08bb647d1033e4cfb031dd2bb535a60c2aeddecd4e6ac91d814f3238635dd8deb35d62d8c2be51108a8f72696d32e5b9

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/4200-17-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4200-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

      Filesize

      24KB

    • memory/4200-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/4200-49-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4220-0-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4220-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

      Filesize

      24KB

    • memory/4220-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

      Filesize

      24KB

    • memory/4220-4-0x00000000020F0000-0x00000000020F6000-memory.dmp

      Filesize

      24KB

    • memory/4220-25-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB