Analysis

  • max time kernel
    150s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28/05/2024, 00:23

General

  • Target
    Launcher.exe
  • Size 80KB
  • Sample240528-appnhsgf72
  • SHA256 fbe0dfcd053290c88edb9404ef78a8c890a6cfea499c5e596e22c492478a1228
  • MD5 SHA1 SHA512 SSDEEP
Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 8 IoCs
  • UPX packed file 2 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Enumerates connected drives 3 TTPs 64 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 33 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Launcher.exe
    "C:\Users\Admin\AppData\Local\Temp\Launcher.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2932
    • C:\Users\Admin\AppData\Local\Temp\Tongbu.exe
      "C:\Users\Admin\AppData\Local\Temp\Tongbu.exe"
      2⤵
      • Loads dropped DLL
      • Enumerates connected drives
      • Modifies Internet Explorer settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3024
      • C:\Users\Admin\AppData\Local\Temp\PkgInstaller.exe
        "C:\Users\Admin\AppData\Local\Temp\PkgInstaller.exe" /r
        3⤵
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        PID:2348
      • C:\Users\Admin\AppData\Local\Temp\Helper.exe
        "C:\Users\Admin\AppData\Local\Temp\Helper.exe" /r
        3⤵
        • Adds Run key to start application
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1420
        • C:\Windows\SysWOW64\regsvr32.exe
          "C:\Windows\System32\regsvr32.exe" -s "C:\Users\Admin\AppData\Local\Temp\Addin\tbIEAddin.dll
          4⤵
            PID:2564
          • C:\Users\Admin\AppData\Local\Temp\tbMobileService.exe
            "C:\Users\Admin\AppData\Local\Temp\tbMobileService.exe"
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1780
        • C:\Users\Admin\AppData\Local\Temp\Helper.exe
          "C:\Users\Admin\AppData\Local\Temp\Helper.exe" "/update" "/silent" "C:\Users\Admin\AppData\Local\Temp\Tongbu.exe" "Tongbu Assistant" "http://server.tongbu.com/update/otherupdate.aspx?v=2.3.2.2&type=tbzs20" "http://t.tongbu.com/tbzs20/ZSUpdateLog.aspx" "0"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:108
        • C:\Tongbu\PublicStaging\iTunes_64_11.3.1.2.exe
          "C:\Tongbu\PublicStaging\iTunes_64_11.3.1.2.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2160
          • C:\Windows\system32\msiexec.exe
            "C:\Windows\system32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\IXP464.TMP\iTunes64.msi" INSTALL_SUPPORT_PACKAGES=1
            4⤵
            • Blocklisted process makes network request
            • Enumerates connected drives
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            PID:2592
        • C:\Windows\SysWOW64\regsvr32.exe
          "C:\Windows\System32\regsvr32.exe" -s "C:\Users\Admin\AppData\Local\Temp\Addin\tbIEAddin.dll
          3⤵
            PID:2344
      • C:\Windows\system32\msiexec.exe
        C:\Windows\system32\msiexec.exe /V
        1⤵
        • Enumerates connected drives
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2932
        • C:\Windows\system32\MsiExec.exe
          C:\Windows\system32\MsiExec.exe -Embedding 5653519F5EB14D1CD9DC713324C2F8BB C
          2⤵
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          PID:1264

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            ServerSettings.ini.tmp

            • Path C:\Tongbu\ServerSettings.ini.tmp
            • Size 9KB
            • SHA256 e0ca6a1075c0299b24ed5b8ca2331062408696ee4da7e67f52e530f24c1e23ab
            • MD5 SHA1 SHA512 SSDEEP

            7B8944BA8AD0EFDF0E01A43EF62BECD0_99DDCE8596ED1EF95BA4A048C2A560A6

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7B8944BA8AD0EFDF0E01A43EF62BECD0_99DDCE8596ED1EF95BA4A048C2A560A6
            • Size 1KB
            • SHA256 29abd90cccc109734016b2698f9e3ba48eeb11d374004ca0b87ce092fb63176b
            • MD5 SHA1 SHA512

            7D266D9E1E69FA1EEFB9699B009B34C8_0A9BFDD75B598C2110CBF610C078E6E6

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7D266D9E1E69FA1EEFB9699B009B34C8_0A9BFDD75B598C2110CBF610C078E6E6
            • Size 5B
            • SHA256 bebe2853a3485d1c2e5c5be4249183e0ddaff9f87de71652371700a89d937128
            • MD5 SHA1 SHA512

            8DFDF057024880D7A081AFBF6D26B92F

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8DFDF057024880D7A081AFBF6D26B92F
            • Size 834B
            • SHA256 1dc8a0fcbe260b77adfe5ad9aaac543239b2a0d9f4e1f3c2657beee4376ffee4
            • MD5 SHA1 SHA512

            94308059B57B3142E455B38A6EB92015

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
            • Size 68KB
            • SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
            • MD5 SHA1 SHA512 SSDEEP

            7B8944BA8AD0EFDF0E01A43EF62BECD0_99DDCE8596ED1EF95BA4A048C2A560A6

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7B8944BA8AD0EFDF0E01A43EF62BECD0_99DDCE8596ED1EF95BA4A048C2A560A6
            • Size 408B
            • SHA256 b3d466cd47ebd02d671bd5d9af65dcd390b5d109ffd49d01acf4a512fe35c64d
            • MD5 SHA1 SHA512

            7D266D9E1E69FA1EEFB9699B009B34C8_0A9BFDD75B598C2110CBF610C078E6E6

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7D266D9E1E69FA1EEFB9699B009B34C8_0A9BFDD75B598C2110CBF610C078E6E6
            • Size 404B
            • SHA256 12188ac9c6426f60d12256fd42db7971dd812ead770db802ccb3ce5903ff72f5
            • MD5 SHA1 SHA512

            8DFDF057024880D7A081AFBF6D26B92F

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8DFDF057024880D7A081AFBF6D26B92F
            • Size 188B
            • SHA256 966125b1e345d28fa57bcfb043bb327ad6646a12c9064708aa48ee9b25cb7a93
            • MD5 SHA1 SHA512

            94308059B57B3142E455B38A6EB92015

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
            • Size 344B
            • SHA256 e173dfd9d54f3749a6017f962120423e0f9ef3b217ec3231eb409ff7275ffec4
            • MD5 SHA1 SHA512

            94308059B57B3142E455B38A6EB92015

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
            • Size 344B
            • SHA256 096e655bcae83be5761d0a5dd6eb97cffc4d22a141884e184bcae45100dd2115
            • MD5 SHA1 SHA512

            94308059B57B3142E455B38A6EB92015

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
            • Size 344B
            • SHA256 6271f205194db0f7986d51cccfef0b63f32bd6084a0555869838a295cf6a782a
            • MD5 SHA1 SHA512

            SetupAdmin.exe

            • Path C:\Users\Admin\AppData\Local\Temp\IXP464.TMP\SetupAdmin.exe
            • Size 75KB
            • SHA256 ef1dfdbc66c6f623e8a398f64bd63db2776023908cb387774480f8e8ce65dbca
            • MD5 SHA1 SHA512 SSDEEP

            Tar2AFE.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\Tar2AFE.tmp
            • Size 177KB
            • SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
            • MD5 SHA1 SHA512 SSDEEP

            Settings.ini

            • Path C:\Users\Admin\Documents\Tongbu\Settings.ini
            • Size 35B
            • SHA256 14087c2d47e408b1230152f79c1767af4929fb3b299108e641c03903283b987a
            • MD5 SHA1 SHA512

            MSI75BE.tmp

            • Path \Users\Admin\AppData\Local\Temp\MSI75BE.tmp
            • Size 105KB
            • SHA256 5a66a3ed6e661597bfa83cc737ba2ebb1dbfd9a368923a668f996f631b0b751e
            • MD5 SHA1 SHA512 SSDEEP

            memory/2932-63-0x0000000000400000-0x000000000042B000-memory.dmp

            memory/2932-0-0x0000000000400000-0x000000000042B000-memory.dmp

            memory/3024-156-0x000000000F8D0000-0x000000000F8D2000-memory.dmp

            memory/3024-2-0x00000000739B0000-0x0000000073F5B000-memory.dmp

            memory/3024-1-0x00000000739B1000-0x00000000739B2000-memory.dmp

            memory/3024-116-0x00000000739B0000-0x0000000073F5B000-memory.dmp

            memory/3024-66-0x00000000739B0000-0x0000000073F5B000-memory.dmp

            memory/3024-259-0x00000000739B0000-0x0000000073F5B000-memory.dmp

            memory/3024-260-0x00000000739B0000-0x0000000073F5B000-memory.dmp

            memory/3024-262-0x0000000013A30000-0x0000000013BA5000-memory.dmp

            memory/3024-271-0x00000000739B0000-0x0000000073F5B000-memory.dmp