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Analysis

  • max time kernel
    150s
  • max time network
    133s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/08/2024, 21:26

General

  • Target

    9fff4fd71e305a6eaff2a46d0d6df6af_JaffaCakes118.exe

  • Size

    252KB

  • MD5

    9fff4fd71e305a6eaff2a46d0d6df6af

  • SHA1

    7a46e7b72c6ed05715f33d68955e80e86a6380be

  • SHA256

    511815e0b9027904181936012a2795d3739d6586dac1775bc8985d0e5db143d3

  • SHA512

    ca6c8234ca3110b7f378550b81e1ea189fdbfaa2056e95f1258d1b5de65695347bdbadd795e3ebe261442e4184ef1864257fd0a161ab7c6b47b41aa9b674cebc

  • SSDEEP

    6144:6ml7FNnnPbuxN8b7giqR20NGNccko5Knvmb7/D26i02maSTOarRfG:pl7FNnjuxN8cGNccko5Knvmb7/D26i0Y

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 51 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9fff4fd71e305a6eaff2a46d0d6df6af_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\9fff4fd71e305a6eaff2a46d0d6df6af_JaffaCakes118.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4816
    • C:\Users\Admin\yiuxioy.exe
      "C:\Users\Admin\yiuxioy.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1624
  • 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=4292,i,8548254608087149642,10333768245962368401,262144 --variations-seed-version --mojo-platform-channel-handle=4112 /prefetch:8
    1⤵
      PID:4236

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\yiuxioy.exe

      Filesize

      252KB

      MD5

      92a5cd8187e7e386caad4dd57ea89961

      SHA1

      a48f781ccdd27ac00c15503a44c92e4eac1a6e80

      SHA256

      6db6df1b0a79c0116c4b998ce93a89ae09f76d14686de346f474098240f889e5

      SHA512

      7307d386106ba131210a7a7b58589f7aa1ccb38a08ebc0a391d4c5d863cd279e86b3ea2d2c22ce7027e88a00359736399af760c98ebebaa9e3118c02a4698b26