Analysis

  • max time kernel
    131s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    02/02/2024, 21:29

General

  • Target
    8a941b3741b3b84f032df3fa8df05f38.dll
  • Size 473KB
  • Sample240202-1cdzcsabhp
  • SHA256 86478dde55423ea79373c7717db21ed3f16998b88d4c2f14c029b0e4f05e8a2a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 35 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\8a941b3741b3b84f032df3fa8df05f38.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2232
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\8a941b3741b3b84f032df3fa8df05f38.dll
      2⤵
      • Adds Run key to start application
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:1616
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2860
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2860 CREDAT:275457 /prefetch:2
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:2732

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 eca05ab3a134513293f025f07c33c85c2eac233cfd0f7072f21012731c8ba9e6
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 2bad4a4c2bbaa0f571e5cb79f78846b67373495cfaf2519eb954461f019227a7
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 b42d22ade4cd344e188443570099239f49e778d6c7cd4b51f0f4282d9a9ad31e
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 f67ffc4a350eabf05a33fbde948491e2135a3099d1ef2e88c9fef706418c264d
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 8c8402f977b65bc52fc7c5cd3a21c41c9559908c262a03158b22f51a2fb94848
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 824f09aa2efbef8551c24839b0b5508cf790f5bd8f758484cc5c5b1c0835210c
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 d1225b3a4779dbafb293fb46ca7f8e471186e407b6ae3c54a1580ab7f2a6e3b1
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 846b355366a4432d55a6058cd400d9978af087d09efead011af6621afdccd476
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 9ef398e24f15dbda95009370429cba30cbc8bfa6b3d5873fff701300cb4940cc
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 bb89d7ef86f95ee88257f3e1de3e86612f12672031f642184e858f95e4d0bf00
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 7189cf339812607dd52d88297ec2b51a9e0627942c2d1ca8ea9d3a03ed4f3644
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 906e2ef391161ccbacda37973efe516fd146cd4b610d2f61950bcc28a694ac70
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 d920b575d538f5be41c583f8c1bb158d19bc5e2babfeb58b5d62213587efa55c
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 3d0c3fa7e2aad8bcee7614a923643867585e27bba8da44f1edab878e66739de8
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 2a1682dd78b2620e7c0068b5678c0acb4155d8cbd621391d7f1d3039a64182f3
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 fbf8f78b0da6b594220860431eb0746c0f7ae99ce795366e4c411d30c5374a60
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 65e2effb4b1f7855575ec557d0ddcb767126dbd2d8c356c493922c51b327062a
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 f7f0a52eeaa4ee7fffea14afb45a9443d7244c89364ee2835fcf596fb7403f80
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 4f9680df2472c1f2489480330377725e37c8f9296bf66d551f31a20862a31e38
        • MD5 SHA1 SHA512

        errorPageStrings[2]

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\FIEDGG3E\errorPageStrings[2]
        • Size 2KB
        • SHA256 9466d620dc57835a2475f8f71e304f54aee7160e134ba160baae0f19e5e71e66
        • MD5 SHA1 SHA512

        httpErrorPagesScripts[1]

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\FIEDGG3E\httpErrorPagesScripts[1]
        • Size 8KB
        • SHA256 46e019fa34465f4ed096a9665d1827b54553931ad82e98be01edb1ddbc94d3ad
        • MD5 SHA1 SHA512 SSDEEP

        Cab342C.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\Cab342C.tmp
        • Size 65KB
        • SHA256 c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
        • MD5 SHA1 SHA512 SSDEEP

        Tar34CC.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\Tar34CC.tmp
        • Size 171KB
        • SHA256 4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f
        • MD5 SHA1 SHA512 SSDEEP

        memory/1616-0-0x0000000000300000-0x0000000000302000-memory.dmp