Analysis

  • max time kernel
    843s
  • max time network
    844s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    07/04/2024, 23:12

General

  • Target
    Firefox Installer.exe
  • Size 342KB
  • Sample240407-264bsahe69
  • SHA256 d36f2fc7452ef0312fe34aa2bb90e23c6b22c38ecbd14ffb67097db62d8ed538
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10
upx

Malware Config

Signatures

  • UPX packed file 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 38 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Firefox Installer.exe
    "C:\Users\Admin\AppData\Local\Temp\Firefox Installer.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Users\Admin\AppData\Local\Temp\7zSCF7A9716\setup-stub.exe
      .\setup-stub.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1756
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe" https://www.mozilla.org/firefox/system-requirements/
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2692
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2692 CREDAT:275457 /prefetch:2
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:2660

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        070E0202839D9D67350CD2613E78E416

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\070E0202839D9D67350CD2613E78E416
        • Size 1KB
        • SHA256 d73494e3446b02167573b3cde3ae1c8584ac26e15e45ac3ec0326708425d90fb
        • MD5 SHA1 SHA512

        3C428B1A3E5F57D887EC4B864FAC5DCC

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3C428B1A3E5F57D887EC4B864FAC5DCC
        • Size 914B
        • SHA256 cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
        • MD5 SHA1 SHA512

        F0ACCF77CDCBFF39F6191887F6D2D357

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357
        • Size 1KB
        • SHA256 df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e
        • MD5 SHA1 SHA512

        3C428B1A3E5F57D887EC4B864FAC5DCC

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3C428B1A3E5F57D887EC4B864FAC5DCC
        • Size 252B
        • SHA256 0f22693bc6e443dbfa9c46e2d8dffe5ba0a46841db99521a3964fe6fe1190e17
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 dfb9578cd04e7fce851b04c7f6136220b8bf6d860c3be75af15c51fbb6cf179a
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 ebd60d45905d7687672bba992f0266cdccb6e9fe3f2c95864a9a5780f01beff5
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 42268666e436d5450f93e46efbec9f448f57514f3a2d30ba9e765fae4ec82cde
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 36d45b3af71aa00ed147c08ede51157e3605b3c2e9c32fbda2c6463c349bc611
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 14effde8cc10b6863a44f7d8419f77ac939601140a33cf3e0f7456d274758e93
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 0a35256b619b4b2cfe2f0005653dffa4d12a54c0ad12f6a4ed58bfdbded02bcd
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 4955f6f012b94929d3d1addf3b16a513b4fcdbd0aa1b7977df2fc94e5d83b78e
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 dea5f6c6b3b57bf776d342cfbaba73f84f256e29c59afa9bf0a436149bf5ff5b
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 847323c72fda5e3c744f9d4f632aa171937e4538d5843a0983b6907f20d4abb9
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 7a9490422d5c872290029a737a402db9ee60dec3da7d59d8a79054518c8aff28
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 4b1f514c803be5c0b9460f8668be1b6d1a62ccef442f88726bf34e261839702c
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 1773c8bd92b7453683bbcf9a272426386c3d790ef7e9db8bdcf31f3e717d639a
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 ace8b84c18f9062366aef7f93ddf91bd3df5a4b2e9b9a200804e3ccf5161bbff
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 c487f539827d83be234d77dc90345fe7c96b896e669354ca643e42f2e0707fd1
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 827d435360a9c0812175e537983ee5ef3b38093c431638fd9dc210f93d2c5234
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 b3d5ce935cbfbbf93cc5fd1d8c965ca3e9188a11d715cce5dea0f306b8dd03b9
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 a53be86b15f9a52c538be488fbccbb8844c4dcd5affc87cff04863b72a6a69d4
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 8ce0f917af7037be23611a32a08183296f1a62e852a7a73b893277fdd8f4cff6
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 6eb16491283eb581c02375401d15230dabd48169b7b6a72a7f1b03b0046d09ea
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 731d123fc87722bb9673c981233dcb7dc56512876b2b6287ce1b0158e95aae5a
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 3316fa304804599fad52ac9d18825d13f1cb3681453ac1093a9c77fc64530db4
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 d2f020ab78a8fd14a48705ee8fc485879f40d7f34b52dacd45c48d552c1867d1
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 0751fc6e7924409be1d7b5c91bcf60056b2b4ec8dd8c6e4b8490c66d509cbd5a
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 6ae4dedfac0b0d8acd5d5ed0452e82004f0068e61c802e04c7e31a602f4a7d91
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 b612b96038afd095f6150ece96b2b3770d9b60a9fcf206ef8c5bb5d9cc8d5b2a
        • MD5 SHA1 SHA512

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
        • Size 344B
        • SHA256 c667477a5c075f37f6ad239d804ba5fe04c3d36d352f76ccb66e7a0f642808c7
        • MD5 SHA1 SHA512

        F0ACCF77CDCBFF39F6191887F6D2D357

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357
        • Size 242B
        • SHA256 159f5f64af7c73e733ec41f28ff72987eb8897e84f82c05d247f3284f6558487
        • MD5 SHA1 SHA512

        search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\Internet Explorer\Services\search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico
        • Size 4KB
        • SHA256 5b2c34b3c4e8dd898b664dba6c3786e2ff9869eff55d673aa48361f11325ed07
        • MD5 SHA1 SHA512 SSDEEP

        imagestore.dat

        • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\s8rbov0\imagestore.dat
        • Size 8KB
        • SHA256 aa8555d315f57105f28931c3c7574aa4e990a903e2096a53a3f4c730929add3b
        • MD5 SHA1 SHA512 SSDEEP

        favicon-196x196.59e3822720be[1].png

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\OZTDCKVW\favicon-196x196.59e3822720be[1].png
        • Size 7KB
        • SHA256 1d58e7af9c848ae3ae30c795a16732d6ebc72d216a8e63078cf4efde4beb3805
        • MD5 SHA1 SHA512 SSDEEP

        Cab2D2A.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\Cab2D2A.tmp
        • Size 68KB
        • SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
        • MD5 SHA1 SHA512 SSDEEP

        Tar2E75.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\Tar2E75.tmp
        • Size 177KB
        • SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
        • MD5 SHA1 SHA512 SSDEEP

        setup-stub.exe

        • Path \Users\Admin\AppData\Local\Temp\7zSCF7A9716\setup-stub.exe
        • Size 551KB
        • SHA256 d9c7beec1d4c5bada1980e95fc30fdde0fc18915b99a8a31f82342767757f11e
        • MD5 SHA1 SHA512 SSDEEP

        System.dll

        • Path \Users\Admin\AppData\Local\Temp\nsdDF6.tmp\System.dll
        • Size 22KB
        • SHA256 b711c4f17690421c9dc8ddb9ed5a9ddc539b3a28f11e19c851e25dcfc7701c04
        • MD5 SHA1 SHA512 SSDEEP

        memory/2044-0-0x0000000000400000-0x0000000000446000-memory.dmp

        memory/2044-17-0x0000000000400000-0x0000000000446000-memory.dmp