Analysis

  • max time kernel
    149s
  • 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
    05/10/2024, 01:31

General

  • Target

    15a583e96d384feff390739f59b21356_JaffaCakes118.exe

  • Size

    1.2MB

  • MD5

    15a583e96d384feff390739f59b21356

  • SHA1

    88ae52bd04a892096b998f245eff68ecd6cf3399

  • SHA256

    b0980b19fc6da04c4c638310b3921ba4ec50dbf92a687fe84238e17ca3af5790

  • SHA512

    99cdc6f4ccee099875a4f7f1e8193f114945179e1b5e0b20398a3f4801b5ffb4c7ba38672f4de5b712e55770967a75d0710e196ce77121be97ba60e953cbb186

  • SSDEEP

    24576:d563ey8gZqj4yYAbx5cyLzoy4z5LPrMcs5dmYOYFQn1s97QJv8wBD:P/+qEyYAbzbL0zzJsKJS1QJv8wBD

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Adds policy Run key to start application 2 TTPs 4 IoCs
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 5 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 IoCs
  • Modifies WinLogon 2 TTPs 2 IoCs
  • Drops file in System32 directory 10 IoCs
  • UPX packed file 21 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Windows directory 7 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

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

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\15a583e96d384feff390739f59b21356_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\15a583e96d384feff390739f59b21356_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:872
    • C:\Windows\SysWOW64\lncom.exe
      "C:\Windows\system32\lncom.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Adds policy Run key to start application
      • Boot or Logon Autostart Execution: Active Setup
      • Executes dropped EXE
      • Loads dropped DLL
      • Modifies WinLogon
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3924
      • C:\Windows\SysWOW64\fservice.exe
        C:\Windows\system32\fservice.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in System32 directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4016
        • C:\Windows\services.exe
          C:\Windows\services.exe -XP
          4⤵
          • Modifies WinLogon for persistence
          • Adds policy Run key to start application
          • Boot or Logon Autostart Execution: Active Setup
          • Executes dropped EXE
          • Loads dropped DLL
          • Modifies WinLogon
          • Drops file in System32 directory
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4044
          • C:\Windows\SysWOW64\NET.exe
            NET STOP srservice
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:3236
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 STOP srservice
              6⤵
              • System Location Discovery: System Language Discovery
              PID:1672
          • C:\Windows\SysWOW64\NET.exe
            NET STOP navapsvc
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2920
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 STOP navapsvc
              6⤵
              • System Location Discovery: System Language Discovery
              PID:4248
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\Windows\SysWOW64\lncom.exe.bat
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4548
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\15A583~1.EXE.bat
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3716
  • 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=1296,i,1602949858158667699,12464335823361976127,262144 --variations-seed-version --mojo-platform-channel-handle=4360 /prefetch:8
    1⤵
      PID:3992

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\15A583~1.EXE.bat

      Filesize

      133B

      MD5

      f4ddf29eaf0c5c43766f04e252be4e3c

      SHA1

      191906c4789b30d136eec302a83d5b20b865ad68

      SHA256

      800e5c7b58fb7a62daa23b9097ac629d343bd1215b06065cf6244f0aea68ab2c

      SHA512

      f96a8bf48c74d74a60ae30917c54e576ef341f2a1a3271f2bce7be31b7d352a8bafc1a3e2ed634e9f1e56c5db7a25265f18501172d14a53b05cbef164cc1c5fc

    • C:\Windows\SysWOW64\lncom.exe

      Filesize

      342KB

      MD5

      ac89f205bb46d673c1bdf8ab5f262d96

      SHA1

      991f4c6679c8679b762fe002695242589cb8d6b5

      SHA256

      7e14e8676889e9246134fed41dd7e02a6a3bb279469b91dce7ec8038e535b02a

      SHA512

      9d0fe91f76ba62fca93d8f7f8736327750465e8f7a7fa39cadf39b66a0cf2078c8c6f2ac32a452421f83141efa80d41c9979a525c358c2e18c77081bc79ae7f7

    • C:\Windows\SysWOW64\lncom.exe.bat

      Filesize

      99B

      MD5

      1f73e450d92934cd37c041eb3f1ff51f

      SHA1

      f3e9dece5d6b7d7a0e4966c16ffe31437539d4a0

      SHA256

      3a57d154715459926a51a9e3925687c0c78ec9c88bc39c303b5b93385d34d67e

      SHA512

      5f982d614e54870ae3ad212f049ca3685602812c1bb066a5f6155e694adb994d6d1608ca7a25bcab605812c6e7e6b22817aaf0dba9e906787add9b0a8e3f32a5

    • C:\Windows\SysWOW64\lncom_.jpg

      Filesize

      858KB

      MD5

      076e3caed758a1c18c91a0e9cae3368f

      SHA1

      f5f8ad26819a471318d24631fa5055036712a87e

      SHA256

      954f7d96502b5c5fe2e98a5045bca7f5e9ba11e3dbf92a5c0214a6aa4c7f2208

      SHA512

      7b8b9adf2dc67871b06fb9094bcd81e8834643cd9af96a0af591c2978bbe2fb7f53ff9b54ae09099aed97db727cd42df4ef02662ef4c6d7cf8023561ddccc7f2

    • C:\Windows\SysWOW64\reginv.dll

      Filesize

      36KB

      MD5

      562e0d01d6571fa2251a1e9f54c6cc69

      SHA1

      83677ad3bc630aa6327253c7b3deffbd4a8ce905

      SHA256

      c5b1d800c86d550c0b68c57c0d9911c1dd21df9e5e37e9e7bc032b5e66fdebe6

      SHA512

      166e132432eca24061f7e7d0c58c0b286e971ae2bc50f7c890b7707dd5dede19fcd83a5f79b6fd3f93dd691e07ad9bc1bd05fe82ccaade1610282188571585ea

    • C:\Windows\SysWOW64\winkey.dll

      Filesize

      13KB

      MD5

      b4c72da9fd1a0dcb0698b7da97daa0cd

      SHA1

      b25a79e8ea4c723c58caab83aed6ea48de7ed759

      SHA256

      45d266269634ba2de70f179a26d7224111e677e66b38dff2802851b71ce4458f

      SHA512

      f5f184416c5381d275bc093c9275e9fdb35c58e2c401d188aef097950013de6e43269da5d4dd5e7baea34735bd7de664d15fe487b2292fd66926c9845b0cd066

    • memory/872-16-0x0000000000400000-0x0000000000404000-memory.dmp

      Filesize

      16KB

    • memory/3924-14-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/3924-17-0x0000000000AD0000-0x0000000000AD1000-memory.dmp

      Filesize

      4KB

    • memory/3924-56-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4016-27-0x00000000007D0000-0x00000000007D1000-memory.dmp

      Filesize

      4KB

    • memory/4016-26-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4016-54-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-67-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-69-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-58-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-60-0x0000000010000000-0x000000001000B000-memory.dmp

      Filesize

      44KB

    • memory/4044-59-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-61-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-63-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-65-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-40-0x0000000010000000-0x000000001000B000-memory.dmp

      Filesize

      44KB

    • memory/4044-36-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-71-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-73-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-75-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-77-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-79-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-81-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-83-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB

    • memory/4044-85-0x0000000000400000-0x00000000005FC000-memory.dmp

      Filesize

      2.0MB