Analysis

  • max time kernel
    129s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    22-11-2022 00:21

General

  • Target

    931fde81b37a27b8a3044d0074dfc39284b66dd9b7622d9e22931c5becfad52f.exe

  • Size

    695KB

  • MD5

    5aa445915e109a93122b5342f7040f6a

  • SHA1

    592fa91e0d705f9cfbb010c31d31c7312d93ea0b

  • SHA256

    931fde81b37a27b8a3044d0074dfc39284b66dd9b7622d9e22931c5becfad52f

  • SHA512

    5c32c8e0da14dc91d378cdfbda1b26593f3f8698690360b524c7fa93d9e786ec3345bbd022f9a5823ed7dd6f01ef5691d3f6407854381ec99dd2907adcc590bb

  • SSDEEP

    12288:GAbu3fQ+thk6EzvbfqZozqGshnUaAAxIGe1htu8cfx6x7mbKfk:GAbuPPEzzfCFjlUaVxIdcPpC7mOfk

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\931fde81b37a27b8a3044d0074dfc39284b66dd9b7622d9e22931c5becfad52f.exe
    "C:\Users\Admin\AppData\Local\Temp\931fde81b37a27b8a3044d0074dfc39284b66dd9b7622d9e22931c5becfad52f.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:1168
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:576
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1536
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1324
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1528
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:532
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:308
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2008
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1872
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1732
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1972
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1616
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:904
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1708

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            46586f141e68b78215194922baea4578

            SHA1

            958ce16d1288d71d17b3c0289442e3b64537d696

            SHA256

            21b5cd1566b102a9d459df79602a300d125af1875f4e8f23342556c63a2de208

            SHA512

            b3a20157a71b89fb01a35957d4ea3d49ba969628f25f80221b1d569f70bf0baab565c223af07bac7cc1863e41071a8e6c1fabdfa379fd4e07bb52789059d044e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            d9b6185fcaed614129f5623310c8155b

            SHA1

            794124a812d10aeeee5ba801df4b92a4ee627b3d

            SHA256

            42d8c031bf9e1d3ae780cb7f80b02f2dd0680bfa40bb92e5a25590fc6bd3ada0

            SHA512

            9f73a163f13f3961e138a0bb282382a40964926058fc09e4acfb70a1932be413f7ddc4b8bd68a37860613331b8fd5705a89fe83b6fc2a2764ad95258ee04ca97

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            6797951411879601d4e4decbc4704262

            SHA1

            f4043c86cb5653b2b166a4510dd47b2a7d0617fa

            SHA256

            275c841c47634c12f046873c1e38ab16bf790fa7ec478b91f07904b9551e2ffb

            SHA512

            4ee0533bb83b6726287859329ca39709e7da636eb1748c157b880d384dac905909f0b0628a5521f6c15a82786118615e6c58aa0a08e0feb18e015237046dc00c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            b7a92570a156c6492360d59cbf98635c

            SHA1

            3d6471829d86b9c6327e5dc242958d708a041af9

            SHA256

            5d5cfbb16366b36fb0aadda63c03ba94c64eb11fba962afea0ed8cd950aef2d2

            SHA512

            38f37f0729e7b1ac53e8b9a0b917dc4b755bda659a2d8b36685eb0534a9e5bab9165dab75facb5e51378c23600b9fd87c1596f6a44596a647bdcbe9304ad08a5

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            b7a92570a156c6492360d59cbf98635c

            SHA1

            3d6471829d86b9c6327e5dc242958d708a041af9

            SHA256

            5d5cfbb16366b36fb0aadda63c03ba94c64eb11fba962afea0ed8cd950aef2d2

            SHA512

            38f37f0729e7b1ac53e8b9a0b917dc4b755bda659a2d8b36685eb0534a9e5bab9165dab75facb5e51378c23600b9fd87c1596f6a44596a647bdcbe9304ad08a5

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1b7cae4e028c4dffe9e9170d5d8bbeb0

            SHA1

            0a3ae8167ad1e3cb8ee1b06e1e84a4fbfcdc51c6

            SHA256

            ba5783ca195dda31a13dee0c56233549552372cd5815f544362d99d027b675c7

            SHA512

            6bdba207419c067e43b5f22b80f04288961a0ee40666a5acd398dbec758e481a1364f4fae9119d53783e35e71bdfd59e9f3065e49b8510ec9d3b8b66c361db7d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1b7cae4e028c4dffe9e9170d5d8bbeb0

            SHA1

            0a3ae8167ad1e3cb8ee1b06e1e84a4fbfcdc51c6

            SHA256

            ba5783ca195dda31a13dee0c56233549552372cd5815f544362d99d027b675c7

            SHA512

            6bdba207419c067e43b5f22b80f04288961a0ee40666a5acd398dbec758e481a1364f4fae9119d53783e35e71bdfd59e9f3065e49b8510ec9d3b8b66c361db7d

          • \Users\Admin\AppData\Local\Temp\nse2272.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nse2272.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nse2272.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nse2272.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nse2272.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            46586f141e68b78215194922baea4578

            SHA1

            958ce16d1288d71d17b3c0289442e3b64537d696

            SHA256

            21b5cd1566b102a9d459df79602a300d125af1875f4e8f23342556c63a2de208

            SHA512

            b3a20157a71b89fb01a35957d4ea3d49ba969628f25f80221b1d569f70bf0baab565c223af07bac7cc1863e41071a8e6c1fabdfa379fd4e07bb52789059d044e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            46586f141e68b78215194922baea4578

            SHA1

            958ce16d1288d71d17b3c0289442e3b64537d696

            SHA256

            21b5cd1566b102a9d459df79602a300d125af1875f4e8f23342556c63a2de208

            SHA512

            b3a20157a71b89fb01a35957d4ea3d49ba969628f25f80221b1d569f70bf0baab565c223af07bac7cc1863e41071a8e6c1fabdfa379fd4e07bb52789059d044e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            46586f141e68b78215194922baea4578

            SHA1

            958ce16d1288d71d17b3c0289442e3b64537d696

            SHA256

            21b5cd1566b102a9d459df79602a300d125af1875f4e8f23342556c63a2de208

            SHA512

            b3a20157a71b89fb01a35957d4ea3d49ba969628f25f80221b1d569f70bf0baab565c223af07bac7cc1863e41071a8e6c1fabdfa379fd4e07bb52789059d044e

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            d9b6185fcaed614129f5623310c8155b

            SHA1

            794124a812d10aeeee5ba801df4b92a4ee627b3d

            SHA256

            42d8c031bf9e1d3ae780cb7f80b02f2dd0680bfa40bb92e5a25590fc6bd3ada0

            SHA512

            9f73a163f13f3961e138a0bb282382a40964926058fc09e4acfb70a1932be413f7ddc4b8bd68a37860613331b8fd5705a89fe83b6fc2a2764ad95258ee04ca97

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            d9b6185fcaed614129f5623310c8155b

            SHA1

            794124a812d10aeeee5ba801df4b92a4ee627b3d

            SHA256

            42d8c031bf9e1d3ae780cb7f80b02f2dd0680bfa40bb92e5a25590fc6bd3ada0

            SHA512

            9f73a163f13f3961e138a0bb282382a40964926058fc09e4acfb70a1932be413f7ddc4b8bd68a37860613331b8fd5705a89fe83b6fc2a2764ad95258ee04ca97

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            6797951411879601d4e4decbc4704262

            SHA1

            f4043c86cb5653b2b166a4510dd47b2a7d0617fa

            SHA256

            275c841c47634c12f046873c1e38ab16bf790fa7ec478b91f07904b9551e2ffb

            SHA512

            4ee0533bb83b6726287859329ca39709e7da636eb1748c157b880d384dac905909f0b0628a5521f6c15a82786118615e6c58aa0a08e0feb18e015237046dc00c

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            b7a92570a156c6492360d59cbf98635c

            SHA1

            3d6471829d86b9c6327e5dc242958d708a041af9

            SHA256

            5d5cfbb16366b36fb0aadda63c03ba94c64eb11fba962afea0ed8cd950aef2d2

            SHA512

            38f37f0729e7b1ac53e8b9a0b917dc4b755bda659a2d8b36685eb0534a9e5bab9165dab75facb5e51378c23600b9fd87c1596f6a44596a647bdcbe9304ad08a5

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1b7cae4e028c4dffe9e9170d5d8bbeb0

            SHA1

            0a3ae8167ad1e3cb8ee1b06e1e84a4fbfcdc51c6

            SHA256

            ba5783ca195dda31a13dee0c56233549552372cd5815f544362d99d027b675c7

            SHA512

            6bdba207419c067e43b5f22b80f04288961a0ee40666a5acd398dbec758e481a1364f4fae9119d53783e35e71bdfd59e9f3065e49b8510ec9d3b8b66c361db7d

          • memory/308-71-0x0000000000000000-mapping.dmp

          • memory/532-64-0x0000000000000000-mapping.dmp

          • memory/576-57-0x0000000000000000-mapping.dmp

          • memory/1168-58-0x0000000000340000-0x00000000007BE000-memory.dmp

            Filesize

            4.5MB

          • memory/1168-69-0x0000000000340000-0x00000000007BE000-memory.dmp

            Filesize

            4.5MB

          • memory/1168-54-0x00000000757C1000-0x00000000757C3000-memory.dmp

            Filesize

            8KB

          • memory/1168-91-0x0000000000340000-0x00000000007BE000-memory.dmp

            Filesize

            4.5MB

          • memory/1324-61-0x0000000000000000-mapping.dmp

          • memory/1528-62-0x0000000000000000-mapping.dmp

          • memory/1536-59-0x0000000000000000-mapping.dmp

          • memory/1616-88-0x0000000000000000-mapping.dmp

          • memory/1732-82-0x0000000000000000-mapping.dmp

          • memory/1872-81-0x0000000000000000-mapping.dmp

          • memory/1972-87-0x0000000000000000-mapping.dmp

          • memory/2008-77-0x0000000000000000-mapping.dmp