Analysis

  • max time kernel
    44s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:53

General

  • Target

    a2d7c07f7f34004f9b16a28c275bac759bb1c7e620911ea47f46c337ca73967f.exe

  • Size

    445KB

  • MD5

    12dd68f8907adb2cd26dcd5b73f08dbf

  • SHA1

    9cfc04a4030ee5ea1c7f6022cd0e5bc40ea5d456

  • SHA256

    a2d7c07f7f34004f9b16a28c275bac759bb1c7e620911ea47f46c337ca73967f

  • SHA512

    91f0dd7b4818d387e9868fa0fd62d4452a276112ec26ac2194e3b419c8c81b41170f0801afa776db84fa6ddb8e606f6cfa8ec485e745fab6bcb0accf6c973606

  • SSDEEP

    12288:mwaVPZ12yVBNaLNsnb4Wc7bYjodLHlW9sF4ArGES:mwal32yVSinb4WcXwMBX6ES

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\a2d7c07f7f34004f9b16a28c275bac759bb1c7e620911ea47f46c337ca73967f.exe
    "C:\Users\Admin\AppData\Local\Temp\a2d7c07f7f34004f9b16a28c275bac759bb1c7e620911ea47f46c337ca73967f.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:2012
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1280
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1728
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1284
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1684
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2008
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:568
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1524
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1960
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1936
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1812
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:456
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1984
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1776

          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

            f120e0752526580533036a4880495975

            SHA1

            aa19d8fb8d6fb9de1456c79ee1ee6e9f4a60d789

            SHA256

            05b75295e378343a45bdf45c9ce2811979bcf62c3ee211034e5d1a6603a86f3e

            SHA512

            420b6180c2bf1cf9e7c34f5b3072162a447762eeb8110b985e687e301bceeea86cc18415dcf782a714e4586d49d54a2ea1883139f502deb458a8ea13c57fe672

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

            241KB

            MD5

            5a53eed3680dcf5ceed96e45aaaa7fa3

            SHA1

            054a3155118e693540c8a2edc148c7e62ca75e31

            SHA256

            f823b3a321699f67a139aebff8f2d939cf9ac258724ad51129c7e1f4da3b6fab

            SHA512

            9160b7a2e1663b980b12eb7791217e58ac73113a96d0052b94f6a7cf95e63750f34defc5b13a71aa3cd50453d47c132ffb2bceb448538b57e11bab8d19c19855

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

            108KB

            MD5

            436718f9899fde3435ad8941943fb3e5

            SHA1

            152b09b39d6d778cb976f498b6cbd8b3082099a3

            SHA256

            01c9af1d2050e70895ebb8f34f01aad4a098ac8eb732b0df64baccd59031a7f4

            SHA512

            0b5968f04a11c2c986b0a11ab946c44d57974ae51e33073cd6073ca20acd4ebc6abd9fcf406c08bbe4e54f0f5b83d9aaf522f97a7b5e7882674b18c38fa97664

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

            176KB

            MD5

            0dd18321d7a70db23ed794c8d7be7695

            SHA1

            35f28061293691ba7977b3b7e4799ad69f15f51d

            SHA256

            4d93cf3caebf8569752bd597ec9c662015cb1c0bacf11ceaa2b66455c299c843

            SHA512

            153d2b402ee310bfb1db3bc446b67649606f61361a76bef34249bb10ab2c8675455f524246b2c29f0b56e59e89a3947de9e5e9b617af550cf986a63eb89c3b40

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

            176KB

            MD5

            0dd18321d7a70db23ed794c8d7be7695

            SHA1

            35f28061293691ba7977b3b7e4799ad69f15f51d

            SHA256

            4d93cf3caebf8569752bd597ec9c662015cb1c0bacf11ceaa2b66455c299c843

            SHA512

            153d2b402ee310bfb1db3bc446b67649606f61361a76bef34249bb10ab2c8675455f524246b2c29f0b56e59e89a3947de9e5e9b617af550cf986a63eb89c3b40

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

            158KB

            MD5

            301b15fdee89a413b627a017cc85bf3f

            SHA1

            60e76a63dd545fed008b34d4698f8befcd2a51fe

            SHA256

            587b7cfb9e93680f62fe5a195514b0870a9c45f62676fe3c43a1469c17d7c516

            SHA512

            0ccbc45dd417b83148c1152f7db71034ff4d6f4ed6a1e9989943aa6926efd118cb244db3625df94ec6e8530ff90e4d28f90dec34e65a419d6b538382c0d6a2c1

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

            158KB

            MD5

            301b15fdee89a413b627a017cc85bf3f

            SHA1

            60e76a63dd545fed008b34d4698f8befcd2a51fe

            SHA256

            587b7cfb9e93680f62fe5a195514b0870a9c45f62676fe3c43a1469c17d7c516

            SHA512

            0ccbc45dd417b83148c1152f7db71034ff4d6f4ed6a1e9989943aa6926efd118cb244db3625df94ec6e8530ff90e4d28f90dec34e65a419d6b538382c0d6a2c1

          • \Users\Admin\AppData\Local\Temp\nstB1B.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nstB1B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstB1B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstB1B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nstB1B.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            f120e0752526580533036a4880495975

            SHA1

            aa19d8fb8d6fb9de1456c79ee1ee6e9f4a60d789

            SHA256

            05b75295e378343a45bdf45c9ce2811979bcf62c3ee211034e5d1a6603a86f3e

            SHA512

            420b6180c2bf1cf9e7c34f5b3072162a447762eeb8110b985e687e301bceeea86cc18415dcf782a714e4586d49d54a2ea1883139f502deb458a8ea13c57fe672

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            f120e0752526580533036a4880495975

            SHA1

            aa19d8fb8d6fb9de1456c79ee1ee6e9f4a60d789

            SHA256

            05b75295e378343a45bdf45c9ce2811979bcf62c3ee211034e5d1a6603a86f3e

            SHA512

            420b6180c2bf1cf9e7c34f5b3072162a447762eeb8110b985e687e301bceeea86cc18415dcf782a714e4586d49d54a2ea1883139f502deb458a8ea13c57fe672

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            f120e0752526580533036a4880495975

            SHA1

            aa19d8fb8d6fb9de1456c79ee1ee6e9f4a60d789

            SHA256

            05b75295e378343a45bdf45c9ce2811979bcf62c3ee211034e5d1a6603a86f3e

            SHA512

            420b6180c2bf1cf9e7c34f5b3072162a447762eeb8110b985e687e301bceeea86cc18415dcf782a714e4586d49d54a2ea1883139f502deb458a8ea13c57fe672

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            5a53eed3680dcf5ceed96e45aaaa7fa3

            SHA1

            054a3155118e693540c8a2edc148c7e62ca75e31

            SHA256

            f823b3a321699f67a139aebff8f2d939cf9ac258724ad51129c7e1f4da3b6fab

            SHA512

            9160b7a2e1663b980b12eb7791217e58ac73113a96d0052b94f6a7cf95e63750f34defc5b13a71aa3cd50453d47c132ffb2bceb448538b57e11bab8d19c19855

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            5a53eed3680dcf5ceed96e45aaaa7fa3

            SHA1

            054a3155118e693540c8a2edc148c7e62ca75e31

            SHA256

            f823b3a321699f67a139aebff8f2d939cf9ac258724ad51129c7e1f4da3b6fab

            SHA512

            9160b7a2e1663b980b12eb7791217e58ac73113a96d0052b94f6a7cf95e63750f34defc5b13a71aa3cd50453d47c132ffb2bceb448538b57e11bab8d19c19855

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            436718f9899fde3435ad8941943fb3e5

            SHA1

            152b09b39d6d778cb976f498b6cbd8b3082099a3

            SHA256

            01c9af1d2050e70895ebb8f34f01aad4a098ac8eb732b0df64baccd59031a7f4

            SHA512

            0b5968f04a11c2c986b0a11ab946c44d57974ae51e33073cd6073ca20acd4ebc6abd9fcf406c08bbe4e54f0f5b83d9aaf522f97a7b5e7882674b18c38fa97664

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            0dd18321d7a70db23ed794c8d7be7695

            SHA1

            35f28061293691ba7977b3b7e4799ad69f15f51d

            SHA256

            4d93cf3caebf8569752bd597ec9c662015cb1c0bacf11ceaa2b66455c299c843

            SHA512

            153d2b402ee310bfb1db3bc446b67649606f61361a76bef34249bb10ab2c8675455f524246b2c29f0b56e59e89a3947de9e5e9b617af550cf986a63eb89c3b40

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            301b15fdee89a413b627a017cc85bf3f

            SHA1

            60e76a63dd545fed008b34d4698f8befcd2a51fe

            SHA256

            587b7cfb9e93680f62fe5a195514b0870a9c45f62676fe3c43a1469c17d7c516

            SHA512

            0ccbc45dd417b83148c1152f7db71034ff4d6f4ed6a1e9989943aa6926efd118cb244db3625df94ec6e8530ff90e4d28f90dec34e65a419d6b538382c0d6a2c1

          • memory/456-86-0x0000000000000000-mapping.dmp
          • memory/568-69-0x0000000000000000-mapping.dmp
          • memory/1280-57-0x0000000000000000-mapping.dmp
          • memory/1284-60-0x0000000000000000-mapping.dmp
          • memory/1524-75-0x0000000000000000-mapping.dmp
          • memory/1684-61-0x0000000000000000-mapping.dmp
          • memory/1728-58-0x0000000000000000-mapping.dmp
          • memory/1812-85-0x0000000000000000-mapping.dmp
          • memory/1936-80-0x0000000000000000-mapping.dmp
          • memory/1960-79-0x0000000000000000-mapping.dmp
          • memory/2008-63-0x0000000000000000-mapping.dmp
          • memory/2012-54-0x0000000074B51000-0x0000000074B53000-memory.dmp
            Filesize

            8KB