Analysis

  • max time kernel
    59s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:56

General

  • Target

    65555cbb123472bcec1602521db2028c132e6cd9355c0e922cfbb5e5ca04b9c5.exe

  • Size

    447KB

  • MD5

    4253a688abc593e772cddaafcab9eeab

  • SHA1

    375263b09c5d3874aabe4b1255eb1bb94fafb1cd

  • SHA256

    65555cbb123472bcec1602521db2028c132e6cd9355c0e922cfbb5e5ca04b9c5

  • SHA512

    e1a30d3df3ff077bd6de63441f4b356c71a8a5068bba509520a8c047baa7eb4f0cab104a9e98ae7ec47b91dac936c7027e008034f83e0f7ff3266e94cc003978

  • SSDEEP

    12288:kkzw3rNqG2ZbeQIlkbnyv19/gwiw96fLQFqpP:kzf2peQdbO19IwihjoqF

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\65555cbb123472bcec1602521db2028c132e6cd9355c0e922cfbb5e5ca04b9c5.exe
    "C:\Users\Admin\AppData\Local\Temp\65555cbb123472bcec1602521db2028c132e6cd9355c0e922cfbb5e5ca04b9c5.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:1944
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1956
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1236
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:772
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:576
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:768
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1400
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:384
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:820
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:796
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:988
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:660
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1004
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:292

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3c82f4d8e1db2ec437bf3ab0c98496de

            SHA1

            886897b8ab5b97bf869bb9880a4a1fa9ecccb374

            SHA256

            72b44fa4d86e18c9a9757558896dbdebbae92985a83d5bf443f3d4c667610c44

            SHA512

            d4801c663f40662a1c2f648f7646e2c75a7a03dbc58763f6c05b4717592ca60cda1fc9efb4a3f1c89bcc49bba8d8ca25055be135922af18f0aca5c51a7c9f0aa

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            a514be9428bce5ada537baad1df09ec6

            SHA1

            e87fbacb3018f1d333df62e5fd997fe89673dfd4

            SHA256

            90ad66ab31f9a679a62edd0adc6de733bdac573df7fd97f2965f8a43e4d7a636

            SHA512

            f408c2124013faead345ef71417eec4560b01e00e3c61f6ee7653d873d97adb237afcd21312a2c6245277e010b07bc8bc4c78e8a92fd0cdfe9d62f1b1ac69582

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            cac6d9c9802dfd89b53d73e135c0c1fa

            SHA1

            d871a758bb1a6fc30d2952e41f3ba542b9dd62ee

            SHA256

            4f34beeec2007980ddda98964412df4228bd094682b7b4dd27fb508e8a015374

            SHA512

            9c9de761e69cdfde04188870df3cefc68d1991408a99057e421a0a379a9946e7c30d9b7569857e3ab328ea7154c46c81df29719722ffbb1ae3e9cc2db7bef2ff

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            031cd028927a865b6207310ea301738e

            SHA1

            118f6a32ccdfe411d31d4a91084cfe21817fcd6e

            SHA256

            9622699ca52d74d8118488176339517304e2e193353243c924efccec5959bc56

            SHA512

            11f89222aa61320441807b5b0b933646d522f6766963619342975c06ce69911efe13ded9856986aa7815c0c11c0bbcd9f1cbaf516df5d5bac15704988e97a704

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            031cd028927a865b6207310ea301738e

            SHA1

            118f6a32ccdfe411d31d4a91084cfe21817fcd6e

            SHA256

            9622699ca52d74d8118488176339517304e2e193353243c924efccec5959bc56

            SHA512

            11f89222aa61320441807b5b0b933646d522f6766963619342975c06ce69911efe13ded9856986aa7815c0c11c0bbcd9f1cbaf516df5d5bac15704988e97a704

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7abf18ab74d2b8209880dd401d5b15de

            SHA1

            ea47295e32cc283bda139c993445982092d63c12

            SHA256

            f47d75486d9da9c7d6ea4f3600c2b324bbec3f39df2629270d6d112a47cc27fb

            SHA512

            48d82e1ddd0a21cb4df08b440bc01befd00b245bce843385d475338a937d860fcca8832e7c7731e5681db53684204aa45d52d7c9f197131b1fdd22b296153b1b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7abf18ab74d2b8209880dd401d5b15de

            SHA1

            ea47295e32cc283bda139c993445982092d63c12

            SHA256

            f47d75486d9da9c7d6ea4f3600c2b324bbec3f39df2629270d6d112a47cc27fb

            SHA512

            48d82e1ddd0a21cb4df08b440bc01befd00b245bce843385d475338a937d860fcca8832e7c7731e5681db53684204aa45d52d7c9f197131b1fdd22b296153b1b

          • \Users\Admin\AppData\Local\Temp\nsdD7B.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsdD7B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdD7B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdD7B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdD7B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3c82f4d8e1db2ec437bf3ab0c98496de

            SHA1

            886897b8ab5b97bf869bb9880a4a1fa9ecccb374

            SHA256

            72b44fa4d86e18c9a9757558896dbdebbae92985a83d5bf443f3d4c667610c44

            SHA512

            d4801c663f40662a1c2f648f7646e2c75a7a03dbc58763f6c05b4717592ca60cda1fc9efb4a3f1c89bcc49bba8d8ca25055be135922af18f0aca5c51a7c9f0aa

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3c82f4d8e1db2ec437bf3ab0c98496de

            SHA1

            886897b8ab5b97bf869bb9880a4a1fa9ecccb374

            SHA256

            72b44fa4d86e18c9a9757558896dbdebbae92985a83d5bf443f3d4c667610c44

            SHA512

            d4801c663f40662a1c2f648f7646e2c75a7a03dbc58763f6c05b4717592ca60cda1fc9efb4a3f1c89bcc49bba8d8ca25055be135922af18f0aca5c51a7c9f0aa

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3c82f4d8e1db2ec437bf3ab0c98496de

            SHA1

            886897b8ab5b97bf869bb9880a4a1fa9ecccb374

            SHA256

            72b44fa4d86e18c9a9757558896dbdebbae92985a83d5bf443f3d4c667610c44

            SHA512

            d4801c663f40662a1c2f648f7646e2c75a7a03dbc58763f6c05b4717592ca60cda1fc9efb4a3f1c89bcc49bba8d8ca25055be135922af18f0aca5c51a7c9f0aa

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            a514be9428bce5ada537baad1df09ec6

            SHA1

            e87fbacb3018f1d333df62e5fd997fe89673dfd4

            SHA256

            90ad66ab31f9a679a62edd0adc6de733bdac573df7fd97f2965f8a43e4d7a636

            SHA512

            f408c2124013faead345ef71417eec4560b01e00e3c61f6ee7653d873d97adb237afcd21312a2c6245277e010b07bc8bc4c78e8a92fd0cdfe9d62f1b1ac69582

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            a514be9428bce5ada537baad1df09ec6

            SHA1

            e87fbacb3018f1d333df62e5fd997fe89673dfd4

            SHA256

            90ad66ab31f9a679a62edd0adc6de733bdac573df7fd97f2965f8a43e4d7a636

            SHA512

            f408c2124013faead345ef71417eec4560b01e00e3c61f6ee7653d873d97adb237afcd21312a2c6245277e010b07bc8bc4c78e8a92fd0cdfe9d62f1b1ac69582

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            cac6d9c9802dfd89b53d73e135c0c1fa

            SHA1

            d871a758bb1a6fc30d2952e41f3ba542b9dd62ee

            SHA256

            4f34beeec2007980ddda98964412df4228bd094682b7b4dd27fb508e8a015374

            SHA512

            9c9de761e69cdfde04188870df3cefc68d1991408a99057e421a0a379a9946e7c30d9b7569857e3ab328ea7154c46c81df29719722ffbb1ae3e9cc2db7bef2ff

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            031cd028927a865b6207310ea301738e

            SHA1

            118f6a32ccdfe411d31d4a91084cfe21817fcd6e

            SHA256

            9622699ca52d74d8118488176339517304e2e193353243c924efccec5959bc56

            SHA512

            11f89222aa61320441807b5b0b933646d522f6766963619342975c06ce69911efe13ded9856986aa7815c0c11c0bbcd9f1cbaf516df5d5bac15704988e97a704

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7abf18ab74d2b8209880dd401d5b15de

            SHA1

            ea47295e32cc283bda139c993445982092d63c12

            SHA256

            f47d75486d9da9c7d6ea4f3600c2b324bbec3f39df2629270d6d112a47cc27fb

            SHA512

            48d82e1ddd0a21cb4df08b440bc01befd00b245bce843385d475338a937d860fcca8832e7c7731e5681db53684204aa45d52d7c9f197131b1fdd22b296153b1b

          • memory/384-75-0x0000000000000000-mapping.dmp

          • memory/576-61-0x0000000000000000-mapping.dmp

          • memory/660-86-0x0000000000000000-mapping.dmp

          • memory/768-63-0x0000000000000000-mapping.dmp

          • memory/772-60-0x0000000000000000-mapping.dmp

          • memory/796-80-0x0000000000000000-mapping.dmp

          • memory/820-79-0x0000000000000000-mapping.dmp

          • memory/988-85-0x0000000000000000-mapping.dmp

          • memory/1236-58-0x0000000000000000-mapping.dmp

          • memory/1400-69-0x0000000000000000-mapping.dmp

          • memory/1944-54-0x0000000076391000-0x0000000076393000-memory.dmp

            Filesize

            8KB

          • memory/1956-57-0x0000000000000000-mapping.dmp