Analysis

  • max time kernel
    33s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:22

General

  • Target

    734f2d8d869ea7bdfaffe09b73ecc53fcbfce68519e01f217953e1605b9e2ceb.exe

  • Size

    602KB

  • MD5

    8c4c7f46456f62c1cb74c9ce45083610

  • SHA1

    318ecfbc2333aa92d4d3c9298a52d2712b7ac06a

  • SHA256

    734f2d8d869ea7bdfaffe09b73ecc53fcbfce68519e01f217953e1605b9e2ceb

  • SHA512

    5501c42859d1d8bed1b6552e7024c5906c8439c1d66e28ed6991d6c7ef33a4263480a925824580c8c3fdbb5bc46e9a72f004ae18e19db9e132f1f1282dbdb43b

  • SSDEEP

    12288:XIny5DYT0Lew6Q02nt9ThP9K11yyd6IFRBYpViJn9NEJq5L:/UT0L/6Q9fzK11jkIFz4MnAY5

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 13 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in System32 directory 5 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\734f2d8d869ea7bdfaffe09b73ecc53fcbfce68519e01f217953e1605b9e2ceb.exe
    "C:\Users\Admin\AppData\Local\Temp\734f2d8d869ea7bdfaffe09b73ecc53fcbfce68519e01f217953e1605b9e2ceb.exe"
    1⤵
    • Drops file in Drivers directory
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:1920
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1388
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1232
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1332
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2044
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1716
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:856
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:688
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1780
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1776
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:624
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1068
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1632
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:752

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9a35eaf3f5c77a3ddaa055280455d194

            SHA1

            fdc093ad73b6db8293a080f04e2ad8b23f808d2d

            SHA256

            591210c6c8feeda0329b58ca571fc916a64f9f2fc4369e15bcf9b59dfa4a04ad

            SHA512

            66dfb59ace7dc25945006c638c6b394f5fbca3362707850375f2d1485bd08d4366ccdef0d8d5b903642d730368d1ac39dce8aadabed5bdfe2ffe97e9b6d8e75d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            469376e03f15a0d5e350adb342154f41

            SHA1

            fdb0ed9a095889e4d4232b622181e4542a93ee6c

            SHA256

            ea81a0e3514d2cab30687bfa4af719d75dda775600cc666656bfc060666ae557

            SHA512

            9b0da49767ec4ba1eff5378bc88873278b5a558c73fad2ec054a0a5f43d65c5285555b0fb0f3104b8337e23cd900171d641814967542b912524d3472979a4416

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e13d912dab7a341efceba425e3a026bf

            SHA1

            e428c97ba9ebef747a20e617b845091ed8dc3549

            SHA256

            45865e4419e39199489714191bbb9b43c3eb9b88e1ac2f3bdfec96684fc13424

            SHA512

            8e07200d05faca73dc01fad39bffb4c9f847672c6f3f0213a630c832036b8ec2fdfe3363469487bdf116ccaf01a057fd0bcc1a25e92089352d29f2833249f916

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a9b0688bc53af4691cff71b689171a1d

            SHA1

            2b3150d096577c351808e4810a67c959762aa526

            SHA256

            b8e2d96fd4be1b50ab65ce5984280505b18a93e77ce823f0de62454379437ec8

            SHA512

            3bbacb074b7d428f5f48c8ba06c8d1d53a725342f02f74712a14cab3a43ce3fdcf0481cbb569b01ac0ab8a6ac4941db7faf6e8d3aac587e4634a509af435eaf3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a9b0688bc53af4691cff71b689171a1d

            SHA1

            2b3150d096577c351808e4810a67c959762aa526

            SHA256

            b8e2d96fd4be1b50ab65ce5984280505b18a93e77ce823f0de62454379437ec8

            SHA512

            3bbacb074b7d428f5f48c8ba06c8d1d53a725342f02f74712a14cab3a43ce3fdcf0481cbb569b01ac0ab8a6ac4941db7faf6e8d3aac587e4634a509af435eaf3

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1818756313b36563f096f42873516093

            SHA1

            daa2a456d55525af96e7a8bf0a86cef9ae66652f

            SHA256

            123b2ddd4f64c2ff1eb18e91fcf1acf97f4f96e946f3b49b0452fcfaacad95e3

            SHA512

            7acd8c7c00449b06813d04aa7978cf2830dbf814dbbf13acec0095444e7168a7afc4c79089a1a4a6aeef4e096974d5bf8c87023eb4f7a433b4e9aed53ab31bb0

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1818756313b36563f096f42873516093

            SHA1

            daa2a456d55525af96e7a8bf0a86cef9ae66652f

            SHA256

            123b2ddd4f64c2ff1eb18e91fcf1acf97f4f96e946f3b49b0452fcfaacad95e3

            SHA512

            7acd8c7c00449b06813d04aa7978cf2830dbf814dbbf13acec0095444e7168a7afc4c79089a1a4a6aeef4e096974d5bf8c87023eb4f7a433b4e9aed53ab31bb0

          • \Users\Admin\AppData\Local\Temp\nso1CA8.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso1CA8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1CA8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1CA8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1CA8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9a35eaf3f5c77a3ddaa055280455d194

            SHA1

            fdc093ad73b6db8293a080f04e2ad8b23f808d2d

            SHA256

            591210c6c8feeda0329b58ca571fc916a64f9f2fc4369e15bcf9b59dfa4a04ad

            SHA512

            66dfb59ace7dc25945006c638c6b394f5fbca3362707850375f2d1485bd08d4366ccdef0d8d5b903642d730368d1ac39dce8aadabed5bdfe2ffe97e9b6d8e75d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9a35eaf3f5c77a3ddaa055280455d194

            SHA1

            fdc093ad73b6db8293a080f04e2ad8b23f808d2d

            SHA256

            591210c6c8feeda0329b58ca571fc916a64f9f2fc4369e15bcf9b59dfa4a04ad

            SHA512

            66dfb59ace7dc25945006c638c6b394f5fbca3362707850375f2d1485bd08d4366ccdef0d8d5b903642d730368d1ac39dce8aadabed5bdfe2ffe97e9b6d8e75d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9a35eaf3f5c77a3ddaa055280455d194

            SHA1

            fdc093ad73b6db8293a080f04e2ad8b23f808d2d

            SHA256

            591210c6c8feeda0329b58ca571fc916a64f9f2fc4369e15bcf9b59dfa4a04ad

            SHA512

            66dfb59ace7dc25945006c638c6b394f5fbca3362707850375f2d1485bd08d4366ccdef0d8d5b903642d730368d1ac39dce8aadabed5bdfe2ffe97e9b6d8e75d

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            469376e03f15a0d5e350adb342154f41

            SHA1

            fdb0ed9a095889e4d4232b622181e4542a93ee6c

            SHA256

            ea81a0e3514d2cab30687bfa4af719d75dda775600cc666656bfc060666ae557

            SHA512

            9b0da49767ec4ba1eff5378bc88873278b5a558c73fad2ec054a0a5f43d65c5285555b0fb0f3104b8337e23cd900171d641814967542b912524d3472979a4416

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            469376e03f15a0d5e350adb342154f41

            SHA1

            fdb0ed9a095889e4d4232b622181e4542a93ee6c

            SHA256

            ea81a0e3514d2cab30687bfa4af719d75dda775600cc666656bfc060666ae557

            SHA512

            9b0da49767ec4ba1eff5378bc88873278b5a558c73fad2ec054a0a5f43d65c5285555b0fb0f3104b8337e23cd900171d641814967542b912524d3472979a4416

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e13d912dab7a341efceba425e3a026bf

            SHA1

            e428c97ba9ebef747a20e617b845091ed8dc3549

            SHA256

            45865e4419e39199489714191bbb9b43c3eb9b88e1ac2f3bdfec96684fc13424

            SHA512

            8e07200d05faca73dc01fad39bffb4c9f847672c6f3f0213a630c832036b8ec2fdfe3363469487bdf116ccaf01a057fd0bcc1a25e92089352d29f2833249f916

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a9b0688bc53af4691cff71b689171a1d

            SHA1

            2b3150d096577c351808e4810a67c959762aa526

            SHA256

            b8e2d96fd4be1b50ab65ce5984280505b18a93e77ce823f0de62454379437ec8

            SHA512

            3bbacb074b7d428f5f48c8ba06c8d1d53a725342f02f74712a14cab3a43ce3fdcf0481cbb569b01ac0ab8a6ac4941db7faf6e8d3aac587e4634a509af435eaf3

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1818756313b36563f096f42873516093

            SHA1

            daa2a456d55525af96e7a8bf0a86cef9ae66652f

            SHA256

            123b2ddd4f64c2ff1eb18e91fcf1acf97f4f96e946f3b49b0452fcfaacad95e3

            SHA512

            7acd8c7c00449b06813d04aa7978cf2830dbf814dbbf13acec0095444e7168a7afc4c79089a1a4a6aeef4e096974d5bf8c87023eb4f7a433b4e9aed53ab31bb0

          • memory/624-86-0x0000000000000000-mapping.dmp

          • memory/688-76-0x0000000000000000-mapping.dmp

          • memory/856-70-0x0000000000000000-mapping.dmp

          • memory/1068-87-0x0000000000000000-mapping.dmp

          • memory/1232-58-0x0000000000000000-mapping.dmp

          • memory/1332-61-0x0000000000000000-mapping.dmp

          • memory/1388-57-0x0000000000000000-mapping.dmp

          • memory/1716-64-0x0000000000000000-mapping.dmp

          • memory/1776-81-0x0000000000000000-mapping.dmp

          • memory/1780-80-0x0000000000000000-mapping.dmp

          • memory/1920-54-0x00000000763F1000-0x00000000763F3000-memory.dmp

            Filesize

            8KB

          • memory/1920-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1920-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2044-62-0x0000000000000000-mapping.dmp