Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/10/2024, 02:20

General

  • Target

    $_2_/MiniQQDL.exe

  • Size

    829KB

  • MD5

    b45f4840234e8aa94d0d75c47cc052ff

  • SHA1

    9fd12d040d7033c0b5b81d4c3ce97145bf504cc4

  • SHA256

    e510b8ef6baba2229fe2c7a88865b8f9cb4609a8d504ca74ca93420fe4eef700

  • SHA512

    08322f3fdf76d52544e8c0ccf88e127f23237fb9d0de3002c6231cea2d5e97342068617d2b4695ccf858ab148436255a965a5daa28e2d3a99f51767a5f306ff8

  • SSDEEP

    12288:glICZQTSccqulHGOgo4i1qOns54kkA1+0uJUQJAMGai+tZQ8L:yLbm2dE8JdAMrNtZLL

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • 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 Program Files directory 11 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Modifies registry class 64 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\$_2_\MiniQQDL.exe
    "C:\Users\Admin\AppData\Local\Temp\$_2_\MiniQQDL.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • Writes to the Master Boot Record (MBR)
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3988
    • C:\Users\Admin\appdata\local\temp\$_2_\tencentdl.exe
      "C:\Users\Admin\appdata\local\temp\$_2_\tencentdl.exe" -install
      2⤵
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3220
      • C:\program files (x86)\common files\tencent\qqdownload\113\tencentdl.exe
        "C:\program files (x86)\common files\tencent\qqdownload\113\tencentdl.exe" -RegServer
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:1168
        • C:\Windows\SysWOW64\regsvr32.exe
          "C:\Windows\System32\regsvr32.exe" /s "C:\program files (x86)\common files\tencent\qqdownload\113\DownloadProxyPS.dll"
          4⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Modifies registry class
          PID:2232
    • C:\Users\Admin\appdata\local\temp\$_2_\tencentdl.exe
      "C:\Users\Admin\appdata\local\temp\$_2_\tencentdl.exe" -install
      2⤵
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:840
      • C:\program files (x86)\common files\tencent\qqdownload\113\tencentdl.exe
        "C:\program files (x86)\common files\tencent\qqdownload\113\tencentdl.exe" -RegServer
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:3136
        • C:\Windows\SysWOW64\regsvr32.exe
          "C:\Windows\System32\regsvr32.exe" /s "C:\program files (x86)\common files\tencent\qqdownload\113\DownloadProxyPS.dll"
          4⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Modifies registry class
          PID:1640
  • C:\program files (x86)\common files\tencent\qqdownload\113\tencentdl.exe
    "C:\program files (x86)\common files\tencent\qqdownload\113\tencentdl.exe" -Embedding
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Writes to the Master Boot Record (MBR)
    • System Location Discovery: System Language Discovery
    • Suspicious use of FindShellTrayWindow
    PID:1712

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Program Files (x86)\Common Files\Tencent\QQDownload\113\DownloadProxyPS.dll

          Filesize

          65KB

          MD5

          4ceb4641a90de4feee34ba5f949d41ba

          SHA1

          cb060db236d9938f97b5e4e2d1b1c663071a2bd7

          SHA256

          2a075c11148c3f04163b9ffdaa05d4b46bc55c96b2fe50d0a39cc377139c2b26

          SHA512

          932960a503817683c3d7c66695732ec6dc59887b0eaa8d53c4e26e1de6fd6c4e9291a4afe25d898c9b02dfe4cd976414f66b715b861e7974e765bff587fa2d27

        • C:\Program Files (x86)\Common Files\Tencent\QQDownload\113\Tencentdl.exe

          Filesize

          821KB

          MD5

          b8f64b0b53e039cbeba7d60c81710bd8

          SHA1

          a9be269daa7f404a23fcaf002be7ee13697ef8e0

          SHA256

          54e0b845eff52823a951ff4b38c6728a381613a0603ce82d4d5c34aa6402f7cc

          SHA512

          9b5c5818fc0a11c8dc80b3befd3459a031f411fc5ddba43f7c0737f20ce6b265599790b64897aed448ccff766c98c5f8d0837495a8eecca36777be390f49ec05

        • C:\Program Files (x86)\Common Files\Tencent\QQDownload\113\dlcore.dll

          Filesize

          1.7MB

          MD5

          82ce23aad749aee959820533c0676cb2

          SHA1

          3aa526a4ed51491b01a5419713d1582a426b7efc

          SHA256

          a2fd92c7fc26bf2851aaefcc5f0bafd75511794ad0c781e1a715df812f7bd2ab

          SHA512

          c91f5165059677071a1e2949244dd1ce4e2c5ce58fe38298f1707ff4b6de6981d7c45f8fd5a189a91d154b0c4af25dbaae4e7a51f107dee77f2f51f0150d2707

        • C:\Program Files (x86)\Common Files\Tencent\QQDownload\113\extract.dll

          Filesize

          358KB

          MD5

          9da51d4506bd094fbfc7d337338fc872

          SHA1

          1b5799ef6b66ac9471842f17570813e7c42cdb27

          SHA256

          f2181e41d5950fcb762edf6b9cbb665e94004a7f1102b606c331690e6069a501

          SHA512

          07dfae7c04ea2815ed78af9e29313050338bfec5a8e08a8846c0f846d6d27b79b7bfe2c3b4dbf3758aa22f88342aadf5513dcbcd6a718b9dd939996d6ce9e044

        • C:\Program Files (x86)\Common Files\Tencent\QQDownload\113\tnproxy.dll

          Filesize

          377KB

          MD5

          858fc685a5bff591985394f9cdf9e289

          SHA1

          5970a28aab399d005885b9c6b79eafd606640fab

          SHA256

          3404212366a3aed4155e5d73d901e769a7005cadde5169a8d9677ab5a0585dcf

          SHA512

          620491b27ff281ad42f947fb9dbef3256624fe8d298740d6b9942627525a2d44525cbb9065d2ffa2efb0ab3478b8a33148fc9b0b4c531106cc8e421e2c59f0d0

        • memory/1712-37-0x0000000003E10000-0x0000000003E6D000-memory.dmp

          Filesize

          372KB

        • memory/3988-24-0x0000000007390000-0x0000000007550000-memory.dmp

          Filesize

          1.8MB

        • memory/3988-35-0x0000000002910000-0x000000000296D000-memory.dmp

          Filesize

          372KB