Analysis

  • max time kernel
    127s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/06/2024, 07:56

General

  • Target
    2024-06-21_8839e2581a5ef5dfd1bb25f481e6fb99_mafia.exe
  • Size 946KB
  • Sample240621-js74pswcnm
  • SHA256 39954c7f2b6241653191f1b909c9c2d7b9e206573d95a2c9db6aa342b8203939
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Executes dropped EXE 8 IoCs
  • Loads dropped DLL 10 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • NSIS installer 4 IoCs
  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies data under HKEY_USERS 37 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-21_8839e2581a5ef5dfd1bb25f481e6fb99_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-21_8839e2581a5ef5dfd1bb25f481e6fb99_mafia.exe"
    1⤵
    • Checks computer location settings
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of WriteProcessMemory
    PID:4520
    • C:\Users\Admin\AppData\Local\Temp\minidownload.exe
      C:\Users\Admin\AppData\Local\Temp\\minidownload.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      PID:4840
    • C:\Program Files (x86)\SogouDownLoad\DownLoadDlg.exe
      "C:\Program Files (x86)\SogouDownLoad\DownLoadDlg.exe" /ExternalAppInstall
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • Writes to the Master Boot Record (MBR)
      • Drops file in Program Files directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:3500
      • C:\Program Files (x86)\SogouDownLoad\tmp\ExternalApp.exe
        "C:\Program Files (x86)\SogouDownLoad\tmp\ExternalApp.exe" /Update
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • Suspicious use of WriteProcessMemory
        PID:2808
        • C:\Windows\SysWOW64\regsvr32.exe
          regsvr32.exe /s "C:\Program Files (x86)\SogouDownLoad\npdownload.dll"
          4⤵
          • Loads dropped DLL
          • Drops file in System32 directory
          • Modifies data under HKEY_USERS
          • Modifies registry class
          PID:3932
        • C:\Windows\SysWOW64\regsvr32.exe
          regsvr32.exe /s "C:\Program Files (x86)\SogouDownLoad\IEHint.dll"
          4⤵
          • Loads dropped DLL
          • Installs/modifies Browser Helper Object
          • Modifies registry class
          PID:4052
        • C:\Windows\SysWOW64\regsvr32.exe
          regsvr32.exe /s "C:\Program Files (x86)\SogouDownLoad\npdownload64.dll"
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:2980
          • C:\Windows\system32\regsvr32.exe
            /s "C:\Program Files (x86)\SogouDownLoad\npdownload64.dll"
            5⤵
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Modifies registry class
            PID:2972
        • C:\Windows\SysWOW64\regsvr32.exe
          regsvr32.exe /s "C:\Program Files (x86)\SogouDownLoad\IEHint64.dll"
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:864
          • C:\Windows\system32\regsvr32.exe
            /s "C:\Program Files (x86)\SogouDownLoad\IEHint64.dll"
            5⤵
            • Loads dropped DLL
            • Installs/modifies Browser Helper Object
            • Modifies registry class
            PID:1004
        • C:\Program Files (x86)\SogouDownLoad\update\UpdateService.exe
          "C:\Program Files (x86)\SogouDownLoad\update\UpdateService.exe" /Install
          4⤵
          • Executes dropped EXE
          PID:4872
        • C:\Program Files (x86)\SogouDownLoad\XLDownloadCom.exe
          "C:\Program Files (x86)\SogouDownLoad\XLDownloadCom.exe" /Regserver
          4⤵
          • Executes dropped EXE
          • Modifies registry class
          PID:1136
        • C:\Windows\SysWOW64\regsvr32.exe
          regsvr32.exe /s "C:\Program Files (x86)\SogouDownLoad\XLDownloadComPS.dll"
          4⤵
          • Loads dropped DLL
          • Modifies registry class
          PID:636
      • C:\Program Files (x86)\SogouDownLoad\download\MiniTPFw.exe
        "C:\Program Files (x86)\SogouDownLoad\download\MiniTPFw.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:4060
        • C:\Program Files (x86)\SogouDownLoad\download\ThunderFW.exe
          "C:\Program Files (x86)\SogouDownLoad\download\ThunderFW.exe" MiniThunderPlatform2024-06-2107:57:10 "C:\Program Files (x86)\SogouDownLoad\download\MiniThunderPlatform.exe"
          4⤵
          • Executes dropped EXE
          PID:1792
  • 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 --no-appcompat-clear --field-trial-handle=4436,i,7012731823941922179,12386606396608877869,262144 --variations-seed-version --mojo-platform-channel-handle=4024 /prefetch:8
    1⤵
      PID:4596
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:2356
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
        1⤵
          PID:3508
        • C:\Program Files (x86)\SogouDownLoad\update\UpdateService.exe
          "C:\Program Files (x86)\SogouDownLoad\update\UpdateService.exe" /Service
          1⤵
          • Executes dropped EXE
          PID:2292

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              CommonState.dll

              • Path C:\Program Files (x86)\SogouDownLoad\CommonState.dll
              • Size 83KB
              • SHA256 d16b036fab037ef7f529c963a746e6963a552b7bf56bd6026db84028bd6aadb9
              • MD5 SHA1 SHA512 SSDEEP

              DlgHandler.dll

              • Path C:\Program Files (x86)\SogouDownLoad\DlgHandler.dll
              • Size 191KB
              • SHA256 d4a4eb61a6ffba806c3f34fa6bb5fca32489f53138dbaf324a8b2d210afa0771
              • MD5 SHA1 SHA512 SSDEEP

              DownLoadDlg.exe

              • Path C:\Program Files (x86)\SogouDownLoad\DownLoadDlg.exe
              • Size 761KB
              • SHA256 bf4eb539657a396a18bcd473cdf95e29d1a46fb93745e176da6440e289c8aac8
              • MD5 SHA1 SHA512 SSDEEP

              IEHint.dll

              • Path C:\Program Files (x86)\SogouDownLoad\IEHint.dll
              • Size 300KB
              • SHA256 cd57765f8cea6a4f422862c0b8a3e1945f17292e4c14b31333ec1525e05c6025
              • MD5 SHA1 SHA512 SSDEEP

              IEHint64.dll

              • Path C:\Program Files (x86)\SogouDownLoad\IEHint64.dll
              • Size 346KB
              • SHA256 3d3f8c1a05c2b5b5362b9ee0ddc1ce653a22abf0b559acceebcc82b73dbaf79a
              • MD5 SHA1 SHA512 SSDEEP

              XLDownloadCom.exe

              • Path C:\Program Files (x86)\SogouDownLoad\XLDownloadCom.exe
              • Size 133KB
              • SHA256 67510f7dd0476f12e07901ac0344d92186dd761a52398ee1e835421382094f1b
              • MD5 SHA1 SHA512 SSDEEP

              XLDownloadComPS.dll

              • Path C:\Program Files (x86)\SogouDownLoad\XLDownloadComPS.dll
              • Size 42KB
              • SHA256 a445ea86ffb20f9540d53aa12dc8f3737a9c87573241b9c5686109533b92e890
              • MD5 SHA1 SHA512 SSDEEP

              MiniTPFw.exe

              • Path C:\Program Files (x86)\SogouDownLoad\download\MiniTPFw.exe
              • Size 58KB
              • SHA256 f02fa7ddab2593492b9b68e3f485e59eb755380a9235f6269705f6d219dff100
              • MD5 SHA1 SHA512 SSDEEP

              ThunderFW.exe

              • Path C:\Program Files (x86)\SogouDownLoad\download\ThunderFW.exe
              • Size 71KB
              • SHA256 298d334b630c77b70e66cf5e9c1924c7f0d498b02c2397e92e2d9efdff2e1bdf
              • MD5 SHA1 SHA512 SSDEEP

              npdownload.dll

              • Path C:\Program Files (x86)\SogouDownLoad\npdownload.dll
              • Size 263KB
              • SHA256 a93cce637743104e4d418eca05f238405b3e97672163d8abd1ad429045f843b6
              • MD5 SHA1 SHA512 SSDEEP

              npdownload64.dll

              • Path C:\Program Files (x86)\SogouDownLoad\npdownload64.dll
              • Size 302KB
              • SHA256 a4917bf56e25576632e808c5199c3c43eb21c866e4e6eb6747c79168f6044c57
              • MD5 SHA1 SHA512 SSDEEP

              ExternalApp.exe

              • Path C:\Program Files (x86)\SogouDownLoad\tmp\ExternalApp.exe
              • Size 2.4MB
              • SHA256 905de1f8ab574888fa9dbe7bb5a060ca1c09f710fed2c98e3c2699e595343b79
              • MD5 SHA1 SHA512 SSDEEP

              UpdateService.exe

              • Path C:\Program Files (x86)\SogouDownLoad\update\UpdateService.exe
              • Size 154KB
              • SHA256 a1779be9ef6a3ec798578c0b79a279d34316872d8509eb37f62c98b2fe6af23f
              • MD5 SHA1 SHA512 SSDEEP

              minidownload.exe

              • Path C:\Users\Admin\AppData\Local\Temp\minidownload.exe
              • Size 544KB
              • SHA256 ffba320baa8d6a30c9607c7cd4f374fed2bb6cc5d7ff2755a48967ae863de21a
              • MD5 SHA1 SHA512 SSDEEP

              System.dll

              • Path C:\Users\Admin\AppData\Local\Temp\nsy89.tmp\System.dll
              • Size 11KB
              • SHA256 dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f
              • MD5 SHA1 SHA512 SSDEEP