Analysis

  • max time kernel
    63s
  • 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 10:52

General

  • Target

    cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe

  • Size

    445KB

  • MD5

    a268c3cc2a33a90606c9a5fdf7a24707

  • SHA1

    6eefae8892f4f5618ebb259600006b15c266e234

  • SHA256

    cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39

  • SHA512

    ed110ae0043965666b15419dfbdf48262683fe62e46e8b98f5ae8f2efaa5f2ea4eec7f8c92e1af12d54010988335499614d03490608b8cd7bd3ee9b24b0c4a6b

  • SSDEEP

    12288:IFUFjW9HB7Gw9EFoBNqEZsik7+hyz3ymEbqN:IFUFq9H0RyBFmJQey9bE

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\cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe
    "C:\Users\Admin\AppData\Local\Temp\cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.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:1764
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:972
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1268
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1472
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:848
        • 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:980
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1592
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1224
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:240
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1380
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1168
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1980
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:936

          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

            a7960ee34b77ecf61ea3a9aa25a1eac8

            SHA1

            e6ce0fca873a4526c50bc1f791b67f78ec58c5da

            SHA256

            bf1dae8a34c6a15d966fd73e2e5a1473a222c0904ec22519ebbc49372d981805

            SHA512

            b90e025616e44eb451d26c3bc2d1a895fa9dd96d2804d995dee4e060c07929f4bbc96d40f0a0aafbb4352efbc31c096dfd55f02d9e764341fda5917aaeecd039

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

            241KB

            MD5

            b60797225b0405c5cd61a93434b46fc0

            SHA1

            451ab2b8dfef9f67144934218b80c484f7c24a40

            SHA256

            f7fd373b949451a13f1ccccd493a9b4e44b97ca39cd3e7becb47e19af830a570

            SHA512

            30b9eb78ae48143722eb468409a2ede034866709c761d335722eee81c41908f1b266124448c0d410438bfcabb9adaabbcb2abed34bbef09cb5b3f6feb8d22141

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

            108KB

            MD5

            a21530bab16724220307de27ed138a48

            SHA1

            b5bfab60392a879058fb7e932f96f3aac66d0eea

            SHA256

            c3b4f65e8493a1480c1c7167bb740f8e25cf9bd62f82e64040c9045d9e2c6cab

            SHA512

            0bd18b325b364456eee0aef7628e87866bb059186399ab959f167f271863e0f4d315f91a5bb357286056af2aeda1a373eac16085ebc56214a06c0789b1f56175

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

            176KB

            MD5

            490d57c105e20fce6c6c8d48425a993b

            SHA1

            692e55c51119c1f10f9276026bcb9deb4c6be45c

            SHA256

            2e5487eee94a06289524abf78fb05421074f541f41f920ea4555d41f8eb7a3a3

            SHA512

            7f012487cd94cd4774ce31950fbc1b6912772d07f2210836396c4ce665ceecdb96a95996eed125d44e93addf6c38f3abc5c9d5e3d2fcba47d25326a1bf39fd60

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

            176KB

            MD5

            490d57c105e20fce6c6c8d48425a993b

            SHA1

            692e55c51119c1f10f9276026bcb9deb4c6be45c

            SHA256

            2e5487eee94a06289524abf78fb05421074f541f41f920ea4555d41f8eb7a3a3

            SHA512

            7f012487cd94cd4774ce31950fbc1b6912772d07f2210836396c4ce665ceecdb96a95996eed125d44e93addf6c38f3abc5c9d5e3d2fcba47d25326a1bf39fd60

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

            158KB

            MD5

            345d682092ac6ce190937486a7ecdf62

            SHA1

            07618d702856b90338d8730f06afa5afcda3d84b

            SHA256

            a5db23fe67c7fe6d4b13818c7c66d668445662a2980d377e5db0eb22799bbfd7

            SHA512

            e1839d92bc1840fd99b12c6312a8f7d43e010d055e2c74ed3c47c905b9d5d2a41cf64225d59c5b898dbfd8cd8407b228dc011d4c84b4cb0de51fb3dd79b92f50

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

            158KB

            MD5

            345d682092ac6ce190937486a7ecdf62

            SHA1

            07618d702856b90338d8730f06afa5afcda3d84b

            SHA256

            a5db23fe67c7fe6d4b13818c7c66d668445662a2980d377e5db0eb22799bbfd7

            SHA512

            e1839d92bc1840fd99b12c6312a8f7d43e010d055e2c74ed3c47c905b9d5d2a41cf64225d59c5b898dbfd8cd8407b228dc011d4c84b4cb0de51fb3dd79b92f50

          • \Users\Admin\AppData\Local\Temp\nst126B.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst126B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst126B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst126B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst126B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            a7960ee34b77ecf61ea3a9aa25a1eac8

            SHA1

            e6ce0fca873a4526c50bc1f791b67f78ec58c5da

            SHA256

            bf1dae8a34c6a15d966fd73e2e5a1473a222c0904ec22519ebbc49372d981805

            SHA512

            b90e025616e44eb451d26c3bc2d1a895fa9dd96d2804d995dee4e060c07929f4bbc96d40f0a0aafbb4352efbc31c096dfd55f02d9e764341fda5917aaeecd039

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            a7960ee34b77ecf61ea3a9aa25a1eac8

            SHA1

            e6ce0fca873a4526c50bc1f791b67f78ec58c5da

            SHA256

            bf1dae8a34c6a15d966fd73e2e5a1473a222c0904ec22519ebbc49372d981805

            SHA512

            b90e025616e44eb451d26c3bc2d1a895fa9dd96d2804d995dee4e060c07929f4bbc96d40f0a0aafbb4352efbc31c096dfd55f02d9e764341fda5917aaeecd039

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            a7960ee34b77ecf61ea3a9aa25a1eac8

            SHA1

            e6ce0fca873a4526c50bc1f791b67f78ec58c5da

            SHA256

            bf1dae8a34c6a15d966fd73e2e5a1473a222c0904ec22519ebbc49372d981805

            SHA512

            b90e025616e44eb451d26c3bc2d1a895fa9dd96d2804d995dee4e060c07929f4bbc96d40f0a0aafbb4352efbc31c096dfd55f02d9e764341fda5917aaeecd039

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            b60797225b0405c5cd61a93434b46fc0

            SHA1

            451ab2b8dfef9f67144934218b80c484f7c24a40

            SHA256

            f7fd373b949451a13f1ccccd493a9b4e44b97ca39cd3e7becb47e19af830a570

            SHA512

            30b9eb78ae48143722eb468409a2ede034866709c761d335722eee81c41908f1b266124448c0d410438bfcabb9adaabbcb2abed34bbef09cb5b3f6feb8d22141

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            b60797225b0405c5cd61a93434b46fc0

            SHA1

            451ab2b8dfef9f67144934218b80c484f7c24a40

            SHA256

            f7fd373b949451a13f1ccccd493a9b4e44b97ca39cd3e7becb47e19af830a570

            SHA512

            30b9eb78ae48143722eb468409a2ede034866709c761d335722eee81c41908f1b266124448c0d410438bfcabb9adaabbcb2abed34bbef09cb5b3f6feb8d22141

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            a21530bab16724220307de27ed138a48

            SHA1

            b5bfab60392a879058fb7e932f96f3aac66d0eea

            SHA256

            c3b4f65e8493a1480c1c7167bb740f8e25cf9bd62f82e64040c9045d9e2c6cab

            SHA512

            0bd18b325b364456eee0aef7628e87866bb059186399ab959f167f271863e0f4d315f91a5bb357286056af2aeda1a373eac16085ebc56214a06c0789b1f56175

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            490d57c105e20fce6c6c8d48425a993b

            SHA1

            692e55c51119c1f10f9276026bcb9deb4c6be45c

            SHA256

            2e5487eee94a06289524abf78fb05421074f541f41f920ea4555d41f8eb7a3a3

            SHA512

            7f012487cd94cd4774ce31950fbc1b6912772d07f2210836396c4ce665ceecdb96a95996eed125d44e93addf6c38f3abc5c9d5e3d2fcba47d25326a1bf39fd60

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            345d682092ac6ce190937486a7ecdf62

            SHA1

            07618d702856b90338d8730f06afa5afcda3d84b

            SHA256

            a5db23fe67c7fe6d4b13818c7c66d668445662a2980d377e5db0eb22799bbfd7

            SHA512

            e1839d92bc1840fd99b12c6312a8f7d43e010d055e2c74ed3c47c905b9d5d2a41cf64225d59c5b898dbfd8cd8407b228dc011d4c84b4cb0de51fb3dd79b92f50

          • memory/240-80-0x0000000000000000-mapping.dmp
          • memory/768-63-0x0000000000000000-mapping.dmp
          • memory/848-61-0x0000000000000000-mapping.dmp
          • memory/972-57-0x0000000000000000-mapping.dmp
          • memory/980-69-0x0000000000000000-mapping.dmp
          • memory/1168-86-0x0000000000000000-mapping.dmp
          • memory/1224-79-0x0000000000000000-mapping.dmp
          • memory/1268-58-0x0000000000000000-mapping.dmp
          • memory/1380-85-0x0000000000000000-mapping.dmp
          • memory/1472-60-0x0000000000000000-mapping.dmp
          • memory/1592-75-0x0000000000000000-mapping.dmp
          • memory/1764-54-0x0000000075001000-0x0000000075003000-memory.dmp
            Filesize

            8KB