Analysis

  • max time kernel
    67s
  • 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 10:31

General

  • Target

    23b7708fcef0851b262e4cde3237aaae8f6c2ee545f7939dc465a823f09b1fa0.exe

  • Size

    603KB

  • MD5

    5cbea09635ccf92aae4cdad2c7846379

  • SHA1

    9632bfd0d8886d0f4c0908ac01b06f30b025e20f

  • SHA256

    23b7708fcef0851b262e4cde3237aaae8f6c2ee545f7939dc465a823f09b1fa0

  • SHA512

    61070c8e78afb10b531ba2282be064b6b1ca94a56c4ab056c923c64cde0d0e09c84d4ef42a1132c8e22e476af71bd58ace78e50930a8cbf193e5fb4f3750329f

  • SSDEEP

    12288:aIny5DYT8x2qIubyg3ltYCJbA7zQnQthWS7Tyd:8UT88myaYWcPQnQx/

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\23b7708fcef0851b262e4cde3237aaae8f6c2ee545f7939dc465a823f09b1fa0.exe
    "C:\Users\Admin\AppData\Local\Temp\23b7708fcef0851b262e4cde3237aaae8f6c2ee545f7939dc465a823f09b1fa0.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:1704
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:568
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1508
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:556
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1104
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:520
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1592
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1628
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1868
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1644
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:784
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1136
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1552
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1724

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            463e75e4f09c4a1cbbe4d4331ccecd97

            SHA1

            7edc7978df253de8706e75254a87b029bbc8c08b

            SHA256

            59fcd4b0dc29a36f80714d54e2db3acd90625c521a47a79a53cf4ddee266498a

            SHA512

            9463763d0382e808086f8f57fb4c5cbf3549626c46470b15ede39591cc8cd6a848c793c5433c783c83232d32d2f25c2823f9ac8fe6ddb3985933ade1e4530f9c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            4ec1bb6ab6da1d99d4209dd51b3c397b

            SHA1

            84e4187b9066fe307f71f451e5029f7594c871e2

            SHA256

            47775dddaba71b986e62990b270d66dae0d6ad1de1c590b760de8123af00d58e

            SHA512

            d212903908703cb8062dfac05206cb2f711f9230eb4b298a11fd24e08433a2fc058a6ed2f419f0c7e171777d8a7ca982233a7f1f0abcc2a3f8d65b57a3eb4849

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            857fafbe272aa8bbd25da7e13480fce0

            SHA1

            d29ee84982b48312b3e5a23bf6db8deabe736122

            SHA256

            1d9cad0b9f5046dd71c2ff09b7560c00d2c9db615c03aa8405576d215ac4b173

            SHA512

            283dd935690307e23fc3e1de6c231fb97c0c8f6caa9f7617825b19f044a840d9377fec8566197df41f84699a5376c529eb51692d59d56bfd7a0e9cd61c6da745

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0510ba3f41509ca5701c05eb716f877a

            SHA1

            86ec200d878f814cbcb620b6822da040f62574ff

            SHA256

            8c479311b6f29d1f98a1e018bfbe9e1c51304a46097df2616798ae2b5aa2bc67

            SHA512

            9a47adb7641f16fe471d38eb25226246412040fc60d7f9115e55f87cbb4849fec98c77c865f07eab9f986e44b1b49114e623e1a7c7c5a6a9454fcf1ec9b0c8ea

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0510ba3f41509ca5701c05eb716f877a

            SHA1

            86ec200d878f814cbcb620b6822da040f62574ff

            SHA256

            8c479311b6f29d1f98a1e018bfbe9e1c51304a46097df2616798ae2b5aa2bc67

            SHA512

            9a47adb7641f16fe471d38eb25226246412040fc60d7f9115e55f87cbb4849fec98c77c865f07eab9f986e44b1b49114e623e1a7c7c5a6a9454fcf1ec9b0c8ea

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            00d6b83c640834cdcd4f4d6d6af4d649

            SHA1

            cfdd5f62e9cb18d8a80104dda435445403c1d1fd

            SHA256

            57952911c93d685e3f09ac41d495a50bb59e712b84d7f755a8207769bf79cbf0

            SHA512

            f26b3d848123274249689361ddb4ae4913a70b49b9277d49a1253c2fb1d805315bc620b710556f2839e656f6196725e5cd7a02c0387292b30d5ab632d45e493a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            00d6b83c640834cdcd4f4d6d6af4d649

            SHA1

            cfdd5f62e9cb18d8a80104dda435445403c1d1fd

            SHA256

            57952911c93d685e3f09ac41d495a50bb59e712b84d7f755a8207769bf79cbf0

            SHA512

            f26b3d848123274249689361ddb4ae4913a70b49b9277d49a1253c2fb1d805315bc620b710556f2839e656f6196725e5cd7a02c0387292b30d5ab632d45e493a

          • \Users\Admin\AppData\Local\Temp\nseE360.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nseE360.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseE360.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseE360.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseE360.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            463e75e4f09c4a1cbbe4d4331ccecd97

            SHA1

            7edc7978df253de8706e75254a87b029bbc8c08b

            SHA256

            59fcd4b0dc29a36f80714d54e2db3acd90625c521a47a79a53cf4ddee266498a

            SHA512

            9463763d0382e808086f8f57fb4c5cbf3549626c46470b15ede39591cc8cd6a848c793c5433c783c83232d32d2f25c2823f9ac8fe6ddb3985933ade1e4530f9c

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            463e75e4f09c4a1cbbe4d4331ccecd97

            SHA1

            7edc7978df253de8706e75254a87b029bbc8c08b

            SHA256

            59fcd4b0dc29a36f80714d54e2db3acd90625c521a47a79a53cf4ddee266498a

            SHA512

            9463763d0382e808086f8f57fb4c5cbf3549626c46470b15ede39591cc8cd6a848c793c5433c783c83232d32d2f25c2823f9ac8fe6ddb3985933ade1e4530f9c

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            463e75e4f09c4a1cbbe4d4331ccecd97

            SHA1

            7edc7978df253de8706e75254a87b029bbc8c08b

            SHA256

            59fcd4b0dc29a36f80714d54e2db3acd90625c521a47a79a53cf4ddee266498a

            SHA512

            9463763d0382e808086f8f57fb4c5cbf3549626c46470b15ede39591cc8cd6a848c793c5433c783c83232d32d2f25c2823f9ac8fe6ddb3985933ade1e4530f9c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            4ec1bb6ab6da1d99d4209dd51b3c397b

            SHA1

            84e4187b9066fe307f71f451e5029f7594c871e2

            SHA256

            47775dddaba71b986e62990b270d66dae0d6ad1de1c590b760de8123af00d58e

            SHA512

            d212903908703cb8062dfac05206cb2f711f9230eb4b298a11fd24e08433a2fc058a6ed2f419f0c7e171777d8a7ca982233a7f1f0abcc2a3f8d65b57a3eb4849

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            4ec1bb6ab6da1d99d4209dd51b3c397b

            SHA1

            84e4187b9066fe307f71f451e5029f7594c871e2

            SHA256

            47775dddaba71b986e62990b270d66dae0d6ad1de1c590b760de8123af00d58e

            SHA512

            d212903908703cb8062dfac05206cb2f711f9230eb4b298a11fd24e08433a2fc058a6ed2f419f0c7e171777d8a7ca982233a7f1f0abcc2a3f8d65b57a3eb4849

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            857fafbe272aa8bbd25da7e13480fce0

            SHA1

            d29ee84982b48312b3e5a23bf6db8deabe736122

            SHA256

            1d9cad0b9f5046dd71c2ff09b7560c00d2c9db615c03aa8405576d215ac4b173

            SHA512

            283dd935690307e23fc3e1de6c231fb97c0c8f6caa9f7617825b19f044a840d9377fec8566197df41f84699a5376c529eb51692d59d56bfd7a0e9cd61c6da745

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0510ba3f41509ca5701c05eb716f877a

            SHA1

            86ec200d878f814cbcb620b6822da040f62574ff

            SHA256

            8c479311b6f29d1f98a1e018bfbe9e1c51304a46097df2616798ae2b5aa2bc67

            SHA512

            9a47adb7641f16fe471d38eb25226246412040fc60d7f9115e55f87cbb4849fec98c77c865f07eab9f986e44b1b49114e623e1a7c7c5a6a9454fcf1ec9b0c8ea

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            00d6b83c640834cdcd4f4d6d6af4d649

            SHA1

            cfdd5f62e9cb18d8a80104dda435445403c1d1fd

            SHA256

            57952911c93d685e3f09ac41d495a50bb59e712b84d7f755a8207769bf79cbf0

            SHA512

            f26b3d848123274249689361ddb4ae4913a70b49b9277d49a1253c2fb1d805315bc620b710556f2839e656f6196725e5cd7a02c0387292b30d5ab632d45e493a

          • memory/520-64-0x0000000000000000-mapping.dmp

          • memory/556-61-0x0000000000000000-mapping.dmp

          • memory/568-58-0x0000000000000000-mapping.dmp

          • memory/784-86-0x0000000000000000-mapping.dmp

          • memory/1104-62-0x0000000000000000-mapping.dmp

          • memory/1136-87-0x0000000000000000-mapping.dmp

          • memory/1508-59-0x0000000000000000-mapping.dmp

          • memory/1592-70-0x0000000000000000-mapping.dmp

          • memory/1628-76-0x0000000000000000-mapping.dmp

          • memory/1644-81-0x0000000000000000-mapping.dmp

          • memory/1704-54-0x0000000075591000-0x0000000075593000-memory.dmp

            Filesize

            8KB

          • memory/1704-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1704-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1868-80-0x0000000000000000-mapping.dmp