Analysis

  • max time kernel
    48s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:16

General

  • Target

    a912877fc615a5035739b7a7bfe331a7bf4f3e2d8468208ad289dec54ea57e85.exe

  • Size

    602KB

  • MD5

    5bf9f2aa853767c759de02b5499f2f00

  • SHA1

    4664142a187bcb8d426fd737227b5e1e59b40fd0

  • SHA256

    a912877fc615a5035739b7a7bfe331a7bf4f3e2d8468208ad289dec54ea57e85

  • SHA512

    370cd584ab7f338d0e5209d1ab35803ffbe4bbfc69f0a56e4d8ba4913cc1cb70be8d38ecc844be8f79db6420858459809da896d22fa07a915b7a6a0b797a0d6e

  • SSDEEP

    12288:xIny5DYTSIm5LzPFhTMKXsP+zq16TGnDpEAFC8X7OjaJbihgg/19bokqywNH:NUTSPLzPFyKX8Sq16Teluuzg9xLqy4H

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\a912877fc615a5035739b7a7bfe331a7bf4f3e2d8468208ad289dec54ea57e85.exe
    "C:\Users\Admin\AppData\Local\Temp\a912877fc615a5035739b7a7bfe331a7bf4f3e2d8468208ad289dec54ea57e85.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:1140
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1932
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1216
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1248
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:472
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1220
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1652
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1604
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1640
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2028
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1944
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1628
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:2008
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:360

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f210e4d466607af44b09e5dedd90dd87

            SHA1

            a3722fd32a850a398b66027e1263bd5d56b0a9a4

            SHA256

            85e4f4228df6c32779a5c90ade5af2da0d77117b2902b5afc8b87fd871d58a64

            SHA512

            469cb7db585a0b6e3630b5b51be7de93c4bd2b31fdb39c8ae36a97521c425b8fb410e985c86b7d53528a29fa8f45399bc9095a49ea04f7a8a763de6166dcc3e0

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            783b681e718c828263ee0631fc93f996

            SHA1

            0806e5c49d22223f1f633bc7b1a79a3b4697a2a0

            SHA256

            51e6004a241960cf9e295f9a59f01300dc09b1bb758a374712983ebb53786a2b

            SHA512

            e4ddfa96406bd65b7d6c005bd6f44e96ffe05a7e6b93fe95eacc043a9b7ff490992f64f9fe5ec979c21d83543f688190db08773d5af0d9758540e7b61b5be77d

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            2a9f53dfdb65b4659135f20ec19c2253

            SHA1

            04f6c5260456482142f7dae34a4a39b3b909560f

            SHA256

            7baa296133a8c4c05eb1d11667a6602c42881db449e31d0fc9495062fae59eed

            SHA512

            0146bb781b51ba86a541a49d1cd250afc0859c70b1091a045dc57a5626fcf076b7436b5026066e15daf422b8a4d248990951b7733e15941069396e9ef35970f3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d5acd3ca5211aeee84c554672d3c3831

            SHA1

            5826074682334f90de7654b1f5685d9003d2fc1e

            SHA256

            20724907276fcf049adbf8ce87953a50289f1563c49b8b67afdf375f2f917169

            SHA512

            6c4c57a94fe4a84a6b44fe40514398c7f1f243b0e5e3f2baa157c1ed20f44f01daeda36cbb7797d42976d84c11e85420a43331432dc25a87f9a561aef426c744

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d5acd3ca5211aeee84c554672d3c3831

            SHA1

            5826074682334f90de7654b1f5685d9003d2fc1e

            SHA256

            20724907276fcf049adbf8ce87953a50289f1563c49b8b67afdf375f2f917169

            SHA512

            6c4c57a94fe4a84a6b44fe40514398c7f1f243b0e5e3f2baa157c1ed20f44f01daeda36cbb7797d42976d84c11e85420a43331432dc25a87f9a561aef426c744

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7605e4e80247df8e3dffa5b59f17dd48

            SHA1

            f2c0a1ab2df70153a6ac23d0af0a72dd0eeef49c

            SHA256

            d35b8c372af87bdfca10417e0ddbfdff3d031d06743281c2e13720010a187cd8

            SHA512

            55a44bcade8dc7adafb0a1cb96e82fc2036994241c86adc4ee795bc9a4dc26951a60084640fcd7767cf2fae601dd73dd51342687e86005b08b27a4a757a6b439

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7605e4e80247df8e3dffa5b59f17dd48

            SHA1

            f2c0a1ab2df70153a6ac23d0af0a72dd0eeef49c

            SHA256

            d35b8c372af87bdfca10417e0ddbfdff3d031d06743281c2e13720010a187cd8

            SHA512

            55a44bcade8dc7adafb0a1cb96e82fc2036994241c86adc4ee795bc9a4dc26951a60084640fcd7767cf2fae601dd73dd51342687e86005b08b27a4a757a6b439

          • \Users\Admin\AppData\Local\Temp\nst35C3.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst35C3.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst35C3.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst35C3.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst35C3.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f210e4d466607af44b09e5dedd90dd87

            SHA1

            a3722fd32a850a398b66027e1263bd5d56b0a9a4

            SHA256

            85e4f4228df6c32779a5c90ade5af2da0d77117b2902b5afc8b87fd871d58a64

            SHA512

            469cb7db585a0b6e3630b5b51be7de93c4bd2b31fdb39c8ae36a97521c425b8fb410e985c86b7d53528a29fa8f45399bc9095a49ea04f7a8a763de6166dcc3e0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f210e4d466607af44b09e5dedd90dd87

            SHA1

            a3722fd32a850a398b66027e1263bd5d56b0a9a4

            SHA256

            85e4f4228df6c32779a5c90ade5af2da0d77117b2902b5afc8b87fd871d58a64

            SHA512

            469cb7db585a0b6e3630b5b51be7de93c4bd2b31fdb39c8ae36a97521c425b8fb410e985c86b7d53528a29fa8f45399bc9095a49ea04f7a8a763de6166dcc3e0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f210e4d466607af44b09e5dedd90dd87

            SHA1

            a3722fd32a850a398b66027e1263bd5d56b0a9a4

            SHA256

            85e4f4228df6c32779a5c90ade5af2da0d77117b2902b5afc8b87fd871d58a64

            SHA512

            469cb7db585a0b6e3630b5b51be7de93c4bd2b31fdb39c8ae36a97521c425b8fb410e985c86b7d53528a29fa8f45399bc9095a49ea04f7a8a763de6166dcc3e0

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            783b681e718c828263ee0631fc93f996

            SHA1

            0806e5c49d22223f1f633bc7b1a79a3b4697a2a0

            SHA256

            51e6004a241960cf9e295f9a59f01300dc09b1bb758a374712983ebb53786a2b

            SHA512

            e4ddfa96406bd65b7d6c005bd6f44e96ffe05a7e6b93fe95eacc043a9b7ff490992f64f9fe5ec979c21d83543f688190db08773d5af0d9758540e7b61b5be77d

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            783b681e718c828263ee0631fc93f996

            SHA1

            0806e5c49d22223f1f633bc7b1a79a3b4697a2a0

            SHA256

            51e6004a241960cf9e295f9a59f01300dc09b1bb758a374712983ebb53786a2b

            SHA512

            e4ddfa96406bd65b7d6c005bd6f44e96ffe05a7e6b93fe95eacc043a9b7ff490992f64f9fe5ec979c21d83543f688190db08773d5af0d9758540e7b61b5be77d

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            2a9f53dfdb65b4659135f20ec19c2253

            SHA1

            04f6c5260456482142f7dae34a4a39b3b909560f

            SHA256

            7baa296133a8c4c05eb1d11667a6602c42881db449e31d0fc9495062fae59eed

            SHA512

            0146bb781b51ba86a541a49d1cd250afc0859c70b1091a045dc57a5626fcf076b7436b5026066e15daf422b8a4d248990951b7733e15941069396e9ef35970f3

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d5acd3ca5211aeee84c554672d3c3831

            SHA1

            5826074682334f90de7654b1f5685d9003d2fc1e

            SHA256

            20724907276fcf049adbf8ce87953a50289f1563c49b8b67afdf375f2f917169

            SHA512

            6c4c57a94fe4a84a6b44fe40514398c7f1f243b0e5e3f2baa157c1ed20f44f01daeda36cbb7797d42976d84c11e85420a43331432dc25a87f9a561aef426c744

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7605e4e80247df8e3dffa5b59f17dd48

            SHA1

            f2c0a1ab2df70153a6ac23d0af0a72dd0eeef49c

            SHA256

            d35b8c372af87bdfca10417e0ddbfdff3d031d06743281c2e13720010a187cd8

            SHA512

            55a44bcade8dc7adafb0a1cb96e82fc2036994241c86adc4ee795bc9a4dc26951a60084640fcd7767cf2fae601dd73dd51342687e86005b08b27a4a757a6b439

          • memory/472-62-0x0000000000000000-mapping.dmp

          • memory/1140-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1140-54-0x0000000075091000-0x0000000075093000-memory.dmp

            Filesize

            8KB

          • memory/1140-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1216-58-0x0000000000000000-mapping.dmp

          • memory/1220-64-0x0000000000000000-mapping.dmp

          • memory/1248-61-0x0000000000000000-mapping.dmp

          • memory/1604-76-0x0000000000000000-mapping.dmp

          • memory/1628-87-0x0000000000000000-mapping.dmp

          • memory/1640-80-0x0000000000000000-mapping.dmp

          • memory/1652-70-0x0000000000000000-mapping.dmp

          • memory/1932-57-0x0000000000000000-mapping.dmp

          • memory/1944-86-0x0000000000000000-mapping.dmp

          • memory/2028-81-0x0000000000000000-mapping.dmp