Analysis

  • max time kernel
    42s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:49

General

  • Target

    f5ee13cf1355f33b5e4ff44bdebd21acf941df00b3b21f1bfe21a027cd1bfe20.exe

  • Size

    446KB

  • MD5

    10e21457f9905e96eb43052bddf98e9b

  • SHA1

    dc5929ca2c182ef426e1208c0ecaa9153110dfa3

  • SHA256

    f5ee13cf1355f33b5e4ff44bdebd21acf941df00b3b21f1bfe21a027cd1bfe20

  • SHA512

    851fba12173f2d9ea70b71b820cdebb3015790fd6e91f19d551ea3b40fb4239de6e7db9a881457be394c6fccfa6831628e6487f355e9bf340c30d2cc9893e1a6

  • SSDEEP

    12288:jtwZn0P5QDI6iJ5y+PRtBPGlhel9rbVcdaj:jtw1HDI6k0K3dJV++

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\f5ee13cf1355f33b5e4ff44bdebd21acf941df00b3b21f1bfe21a027cd1bfe20.exe
    "C:\Users\Admin\AppData\Local\Temp\f5ee13cf1355f33b5e4ff44bdebd21acf941df00b3b21f1bfe21a027cd1bfe20.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:896
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:684
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:428
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2024
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:468
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1992
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:956
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1304
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:660
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1592
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1864
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1632
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1568
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1736

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            d61d12d3a6396a147176acbebf48c59e

            SHA1

            7163f2a8206c2aa4985db4772eebf00528de703c

            SHA256

            76cf3c13252f6ca51cda074e2a05b5ea3e82250e7f92fa7018933bcc88649da9

            SHA512

            b34f982fcd7591ac59b060543d14cedcfa6467b38b375d23f31efa4036262ff1c4c677675638a86318ab94ebcd4f8682f573905868d2e30e1312f3c5423f5840

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            df958f89fcbdf9d79f7c467d53006fb6

            SHA1

            bc6e304488940cd35c5ccea8310cb065b3f8b3aa

            SHA256

            fcf2b8ccd8c74d36d3398cceeb24d79b5ea1abd5ddfe60aa7fc08192f18e64fc

            SHA512

            c63ace1eb5651bc72dcad44a5d3ddf24dc4401d3e229eedcc2b81e56a4136d73f6bf0bb04070c5528d53a08ba2f050e887cf789dd82c92bd736f6bbb88375c99

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            e00a47d26c9db90f8ba6352d30b28bbd

            SHA1

            9cf9ec98e4bbbc4479cf1a2b78566e283ba431d7

            SHA256

            a1dd23a4a8510720ee7812987d7a152e3554cceb7679b539805aaaa2a62e01f8

            SHA512

            0dca9b77345e652e2a107d00643a3b422a8a858e01d472fe7dd21c9c76280fc6ba33f6d09c2da4d3b2fc09f15b2a6a49f90de655a25162340caf24d857286ff5

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            adcf15d51ec33a20df3c7efe3dab8b11

            SHA1

            a7762b0cf79b2da2acf26cc3bba8cff3cb7785e8

            SHA256

            47eacb1bf33b3e9f771d4c9d1025e65202c17227189aa07b978cc96f2c0f3cf3

            SHA512

            3d50026d5e08bb893988ef46e72ef7b499eb940a79d6070c5c35058ab8caf919e4afe8f78bfd619618489efde23852240ca15280fc008abd3f8ecbf7fc37efb7

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            adcf15d51ec33a20df3c7efe3dab8b11

            SHA1

            a7762b0cf79b2da2acf26cc3bba8cff3cb7785e8

            SHA256

            47eacb1bf33b3e9f771d4c9d1025e65202c17227189aa07b978cc96f2c0f3cf3

            SHA512

            3d50026d5e08bb893988ef46e72ef7b499eb940a79d6070c5c35058ab8caf919e4afe8f78bfd619618489efde23852240ca15280fc008abd3f8ecbf7fc37efb7

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            76e9606c3436c070791b1e601fcb2bcc

            SHA1

            03c9062d9ffb17ca0e369ee03b72a0a1d0586114

            SHA256

            8999ca1f2c65e167b4000c0e42181f1724d44da7133f7f9db476256c3fffe544

            SHA512

            949c50863f061de55c6db840d0edd91f0fef77118400e3d73ef97466b7b83b5758fa53045c458a8d54bbb9f8fd84c390764d43b8ea018c0ed5b12cc3badd442c

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            76e9606c3436c070791b1e601fcb2bcc

            SHA1

            03c9062d9ffb17ca0e369ee03b72a0a1d0586114

            SHA256

            8999ca1f2c65e167b4000c0e42181f1724d44da7133f7f9db476256c3fffe544

            SHA512

            949c50863f061de55c6db840d0edd91f0fef77118400e3d73ef97466b7b83b5758fa53045c458a8d54bbb9f8fd84c390764d43b8ea018c0ed5b12cc3badd442c

          • \Users\Admin\AppData\Local\Temp\nstFC2D.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nstFC2D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstFC2D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstFC2D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstFC2D.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            d61d12d3a6396a147176acbebf48c59e

            SHA1

            7163f2a8206c2aa4985db4772eebf00528de703c

            SHA256

            76cf3c13252f6ca51cda074e2a05b5ea3e82250e7f92fa7018933bcc88649da9

            SHA512

            b34f982fcd7591ac59b060543d14cedcfa6467b38b375d23f31efa4036262ff1c4c677675638a86318ab94ebcd4f8682f573905868d2e30e1312f3c5423f5840

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            d61d12d3a6396a147176acbebf48c59e

            SHA1

            7163f2a8206c2aa4985db4772eebf00528de703c

            SHA256

            76cf3c13252f6ca51cda074e2a05b5ea3e82250e7f92fa7018933bcc88649da9

            SHA512

            b34f982fcd7591ac59b060543d14cedcfa6467b38b375d23f31efa4036262ff1c4c677675638a86318ab94ebcd4f8682f573905868d2e30e1312f3c5423f5840

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            d61d12d3a6396a147176acbebf48c59e

            SHA1

            7163f2a8206c2aa4985db4772eebf00528de703c

            SHA256

            76cf3c13252f6ca51cda074e2a05b5ea3e82250e7f92fa7018933bcc88649da9

            SHA512

            b34f982fcd7591ac59b060543d14cedcfa6467b38b375d23f31efa4036262ff1c4c677675638a86318ab94ebcd4f8682f573905868d2e30e1312f3c5423f5840

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            df958f89fcbdf9d79f7c467d53006fb6

            SHA1

            bc6e304488940cd35c5ccea8310cb065b3f8b3aa

            SHA256

            fcf2b8ccd8c74d36d3398cceeb24d79b5ea1abd5ddfe60aa7fc08192f18e64fc

            SHA512

            c63ace1eb5651bc72dcad44a5d3ddf24dc4401d3e229eedcc2b81e56a4136d73f6bf0bb04070c5528d53a08ba2f050e887cf789dd82c92bd736f6bbb88375c99

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            df958f89fcbdf9d79f7c467d53006fb6

            SHA1

            bc6e304488940cd35c5ccea8310cb065b3f8b3aa

            SHA256

            fcf2b8ccd8c74d36d3398cceeb24d79b5ea1abd5ddfe60aa7fc08192f18e64fc

            SHA512

            c63ace1eb5651bc72dcad44a5d3ddf24dc4401d3e229eedcc2b81e56a4136d73f6bf0bb04070c5528d53a08ba2f050e887cf789dd82c92bd736f6bbb88375c99

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            e00a47d26c9db90f8ba6352d30b28bbd

            SHA1

            9cf9ec98e4bbbc4479cf1a2b78566e283ba431d7

            SHA256

            a1dd23a4a8510720ee7812987d7a152e3554cceb7679b539805aaaa2a62e01f8

            SHA512

            0dca9b77345e652e2a107d00643a3b422a8a858e01d472fe7dd21c9c76280fc6ba33f6d09c2da4d3b2fc09f15b2a6a49f90de655a25162340caf24d857286ff5

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            adcf15d51ec33a20df3c7efe3dab8b11

            SHA1

            a7762b0cf79b2da2acf26cc3bba8cff3cb7785e8

            SHA256

            47eacb1bf33b3e9f771d4c9d1025e65202c17227189aa07b978cc96f2c0f3cf3

            SHA512

            3d50026d5e08bb893988ef46e72ef7b499eb940a79d6070c5c35058ab8caf919e4afe8f78bfd619618489efde23852240ca15280fc008abd3f8ecbf7fc37efb7

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            76e9606c3436c070791b1e601fcb2bcc

            SHA1

            03c9062d9ffb17ca0e369ee03b72a0a1d0586114

            SHA256

            8999ca1f2c65e167b4000c0e42181f1724d44da7133f7f9db476256c3fffe544

            SHA512

            949c50863f061de55c6db840d0edd91f0fef77118400e3d73ef97466b7b83b5758fa53045c458a8d54bbb9f8fd84c390764d43b8ea018c0ed5b12cc3badd442c

          • memory/428-58-0x0000000000000000-mapping.dmp
          • memory/468-61-0x0000000000000000-mapping.dmp
          • memory/660-79-0x0000000000000000-mapping.dmp
          • memory/684-57-0x0000000000000000-mapping.dmp
          • memory/896-54-0x0000000075E31000-0x0000000075E33000-memory.dmp
            Filesize

            8KB

          • memory/956-69-0x0000000000000000-mapping.dmp
          • memory/1304-75-0x0000000000000000-mapping.dmp
          • memory/1592-80-0x0000000000000000-mapping.dmp
          • memory/1632-86-0x0000000000000000-mapping.dmp
          • memory/1864-85-0x0000000000000000-mapping.dmp
          • memory/1992-63-0x0000000000000000-mapping.dmp
          • memory/2024-60-0x0000000000000000-mapping.dmp