Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    09/04/2024, 12:04

General

  • Target
    $TEMP/zwsw.exe
  • Size 357KB
  • Sample240409-n8m6paed93
  • SHA256 c291fdb7b0d70c6c3265db5fcd17f13cd5196e680d0f317f28d3f6105d68a184
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Drops file in Drivers directory 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 37 IoCs
  • Adds Run key to start application 2 TTPs 1 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 1 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 26 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 64 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\$TEMP\zwsw.exe
    "C:\Users\Admin\AppData\Local\Temp\$TEMP\zwsw.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2972
    • C:\Users\Admin\AppData\Local\Temp\setup\insgr31.exe
      "C:\Users\Admin\AppData\Local\Temp\setup\insgr31.exe" 00020402
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2536
      • C:\Users\Admin\AppData\Local\Temp\setup\setup.exe
        C:\Users\Admin\AppData\Local\Temp\setup\setup.exe 00020402
        3⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Installs/modifies Browser Helper Object
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2572
        • C:\Program Files\CNNIC\Cdn\cdnup.exe
          "C:\Program Files\CNNIC\Cdn\cdnup.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:2324

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        cdn.dll

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdn.dll
        • Size 32KB
        • SHA256 d3702d62e6b4528d84bfbfad76a3adc92f553ca9410756f7bee67fbf6222a39b
        • MD5 SHA1 SHA512 SSDEEP

        cdnaux.dll

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdnaux.dll
        • Size 36KB
        • SHA256 530fe9c995409cdb7af902c6ae01b4a354b2e7857499b038bae79873e0c2ae61
        • MD5 SHA1 SHA512 SSDEEP

        cdnctr.exe

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdnctr.exe
        • Size 56KB
        • SHA256 854a26deecafa8fead317e69cf5a57fcd806da05fd4aeb0110b097f2a9f3d8ec
        • MD5 SHA1 SHA512 SSDEEP

        cdndet.dll

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdndet.dll
        • Size 72KB
        • SHA256 3b914b8df47bfd38cdfbb8f87a56c05ccfa90dd8186bf3e9feec75004ec46b84
        • MD5 SHA1 SHA512 SSDEEP

        cdndisp.dat

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdndisp.dat
        • Size 211B
        • SHA256 ec2c9cc2e71e7648399e5876bbf72039896563ab6e82181f479f1e0f042fbfa5
        • MD5 SHA1 SHA512

        cdnglo.dll

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdnglo.dll
        • Size 84KB
        • SHA256 a3a7080597da7dd8fe140ebc584c1026b5cb5e1610a5a43ed4337d638f704544
        • MD5 SHA1 SHA512 SSDEEP

        cdnhint.dat

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdnhint.dat
        • Size 641B
        • SHA256 425a4ae9daee437dc6141070ed84764e5529b4a5a4d24ee838785d206d41adfb
        • MD5 SHA1 SHA512

        cdniehlp.dll

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdniehlp.dll
        • Size 112KB
        • SHA256 9f756b7bfec5177534bfeead5f73970cc8ce3fedbb1642c93ccffb45e2ee7629
        • MD5 SHA1 SHA512 SSDEEP

        cdnins.dll

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdnins.dll
        • Size 68KB
        • SHA256 6492b2d91dfabddeacf5d01966914f4910238fb6e55eea2b883f8d8aa912c51c
        • MD5 SHA1 SHA512 SSDEEP

        cdnns.dll

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdnns.dll
        • Size 21KB
        • SHA256 c17cc7c948893522b7676d4f20dc96b68412f73f3da8042fb3c13ea25735e9a5
        • MD5 SHA1 SHA512 SSDEEP

        cdnprev.dat

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdnprev.dat
        • Size 332B
        • SHA256 fbad62bd59eb03bcf515a036d9d4c9b100efcf7aa22e17e46beeeb25eeeff858
        • MD5 SHA1 SHA512

        cdnprh.dll

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdnprh.dll
        • Size 36KB
        • SHA256 36d95e3b84c6c698053ffbe4ec0170bb5b0692aa06e6c07cc1dd18ffa6ff949a
        • MD5 SHA1 SHA512 SSDEEP

        cdnprot.dat

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdnprot.dat
        • Size 2KB
        • SHA256 df37012ed8be8d8266450f5c81ccc2b0d98156a5a41878e08fd85df57d56b594
        • MD5 SHA1 SHA512

        cdnprot.sys

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdnprot.sys
        • Size 41KB
        • SHA256 98cba3b27aefaf76e7fab846abf112e91cee81a922da8e36e64bc94ad4d47c03
        • MD5 SHA1 SHA512 SSDEEP

        cdnspie.dll

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdnspie.dll
        • Size 76KB
        • SHA256 8273686e2da10994a40f9bfc9079450a598c02b6503ddef6effac9f2b4148078
        • MD5 SHA1 SHA512 SSDEEP

        cdntdns.dll

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdntdns.dll
        • Size 56KB
        • SHA256 c4bc8cd1634ad96fec655acffdf2231576ff9c5b8ad39f274f92025b3489f0be
        • MD5 SHA1 SHA512 SSDEEP

        cdntran.dat

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdntran.dat
        • Size 1KB
        • SHA256 be84e1f1216979f765c048617636afbfc8092338800348456051f81bfea2c838
        • MD5 SHA1 SHA512

        cdntran.sys

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdntran.sys
        • Size 10KB
        • SHA256 5219ea14b4dc797c1a77f4b01f978f61fae380abb7809c4c38fed05cde2b440d
        • MD5 SHA1 SHA512 SSDEEP

        cdnunins.exe

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdnunins.exe
        • Size 68KB
        • SHA256 44feb1325ae988ed8fa410e2e229a3ee4fac8e08305effed28d38fe558f0cca9
        • MD5 SHA1 SHA512 SSDEEP

        cdnup.exe

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdnup.exe
        • Size 96KB
        • SHA256 8dca11149155cd9714e24deb92e93a3d814f02414b2c823fb3cc8444bfa5b4f2
        • MD5 SHA1 SHA512 SSDEEP

        cdnvers.dat

        • Path C:\Users\Admin\AppData\Local\Temp\setup\cdnvers.dat
        • Size 1KB
        • SHA256 35e1e3a52c3b6bb8af1fd474cc23d0ce6cb3ed16dc86a25a202de78a464c3235
        • MD5 SHA1 SHA512

        client.dll

        • Path C:\Users\Admin\AppData\Local\Temp\setup\client.dll
        • Size 40KB
        • SHA256 365099e842932e8704f52d0b10eb6237f5788132dedc7b771211fcc0a24a7c66
        • MD5 SHA1 SHA512 SSDEEP

        idnconv.dll

        • Path C:\Users\Admin\AppData\Local\Temp\setup\idnconv.dll
        • Size 228KB
        • SHA256 55d8110ebe08d94c63ce16558fd7e897cc7c6aedf1bb3f52b0d383b2d17dc576
        • MD5 SHA1 SHA512 SSDEEP

        imaconv.dll

        • Path C:\Users\Admin\AppData\Local\Temp\setup\imaconv.dll
        • Size 36KB
        • SHA256 1626cc71606ed192b47f070bb5984d3631c3e57c13d54a3bba8bd9fbd3b08648
        • MD5 SHA1 SHA512 SSDEEP

        imaoe.dll

        • Path C:\Users\Admin\AppData\Local\Temp\setup\imaoe.dll
        • Size 52KB
        • SHA256 9a565ba5887f10c62c80aedfa187d86c9733e14e84ff2fa42d5b40c93ce72635
        • MD5 SHA1 SHA512 SSDEEP

        imaol.dll

        • Path C:\Users\Admin\AppData\Local\Temp\setup\imaol.dll
        • Size 92KB
        • SHA256 6b7d3c1719f41ea344831237a18402692b3944e8978552ddfbb8ba4db3e57d38
        • MD5 SHA1 SHA512 SSDEEP

        setup.exe

        • Path C:\Users\Admin\AppData\Local\Temp\setup\setup.exe
        • Size 28KB
        • SHA256 3d20d973651546be8d370ff9013bbdc03282808a212731b92852f0b789634064
        • MD5 SHA1 SHA512 SSDEEP

        src.dat

        • Path C:\Users\Admin\AppData\Local\Temp\setup\src.dat
        • Size 108B
        • SHA256 ea209a4977d7daed54a69cd79966265e804d460fe354da409e3a7d515b0f8c40
        • MD5 SHA1 SHA512

        src.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\src.tmp
        • Size 108B
        • SHA256 76052beccb25953917ca63dee4992047c294c79ad0adac266976ce374fb19100
        • MD5 SHA1 SHA512

        insgr31.exe

        • Path \Users\Admin\AppData\Local\Temp\setup\insgr31.exe
        • Size 72KB
        • SHA256 4d436cdedcae7ef9b49b6d14ca4a397b2f603839919c965162f6925c7c843258
        • MD5 SHA1 SHA512 SSDEEP

        memory/2324-177-0x0000000000250000-0x0000000000264000-memory.dmp

        memory/2324-178-0x0000000000270000-0x000000000027D000-memory.dmp

        memory/2324-179-0x00000000002F0000-0x000000000032A000-memory.dmp

        memory/2324-181-0x00000000003B0000-0x00000000003C4000-memory.dmp

        memory/2324-182-0x0000000004110000-0x00000000042BF000-memory.dmp

        memory/2572-129-0x0000000003FD0000-0x000000000417F000-memory.dmp

        memory/2572-94-0x0000000000270000-0x0000000000290000-memory.dmp

        memory/2572-117-0x0000000000410000-0x000000000044A000-memory.dmp

        memory/2572-143-0x00000000003A0000-0x00000000003AB000-memory.dmp

        memory/2572-113-0x0000000000290000-0x00000000002A8000-memory.dmp