Analysis

  • max time kernel
    49s
  • max time network
    32s
  • 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

    1dde5f3ededd93c448658195a0a49599b4ca21d7ed684afdd80d2f04d686c750.exe

  • Size

    602KB

  • MD5

    83ef36b4006f020167b21ee60d6bbd91

  • SHA1

    71b6176e25fc079be94a4c3c10dc14c4d6ed8292

  • SHA256

    1dde5f3ededd93c448658195a0a49599b4ca21d7ed684afdd80d2f04d686c750

  • SHA512

    7ac3604d6e2b51f8835beb6863216e6f3bf7b7908447af978cdc94ed7aeeb8393e0bd7477ff0063f71c9098f800ae1a0c20ea116eac26ed254cbaad17b87fa31

  • SSDEEP

    12288:9Iny5DYTW9vk7/Zyr6dmSTD98CvOrFPg2lTMDVB:pUTW9vyZy+0xVy

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\1dde5f3ededd93c448658195a0a49599b4ca21d7ed684afdd80d2f04d686c750.exe
    "C:\Users\Admin\AppData\Local\Temp\1dde5f3ededd93c448658195a0a49599b4ca21d7ed684afdd80d2f04d686c750.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:1808
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1988
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1496
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:376
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:860
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:824
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1552
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:396
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1252
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1624
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2012
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:240
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1780
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:776

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0ffab184f4a5eebf0f22593a84b98a48

            SHA1

            1093549e495c5a160d27acb95918d7017616064e

            SHA256

            f8d4260c65ed49183544cc3aefe41171c5fd220ba0cd98c292fa8caebc2334a5

            SHA512

            752830efff9c99a4db96a3797b0e8b1a3262ea7f988ef896822e22e7afa1d8457bab0d26a87ce2959cc1de83d17d5255c5a17cf76e5743b1a553f56a4ff16a4c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            2297fadb73b09fd9e6d8caf0eced61f3

            SHA1

            59a2d91e37ad13947b44131b4552cbde524fe3d4

            SHA256

            0e3e6de86ef7c71ced6b25059383d917561ac26ab5308d24767f7f4aec4cdd0a

            SHA512

            35563f14f03cf26d96dcb9c1245b44eaed2e5dbc24f666dac8d36872320b59f2b73d5941c90d5400ee500ac1f27d0f451151471e825cfa7b44eb0230d0140948

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3037f9c7782f347908d103d5fb268043

            SHA1

            59e955b93183df10581d60cb2d0d2b252c0d98dd

            SHA256

            1198944306113325864322fc177622d9b693710965cbd4d0e6799a27f3126ad0

            SHA512

            c7bba7d3641eaa7bcf7be96a5defcee612d9abe6b9c5e493c23edec146766b781e5231f961ead8e43a37c53f5e0da2f4111b695588b7f6256dfb0a7f56e99162

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            bc86c6d13a1d90a4f7d10e7c7567b16a

            SHA1

            ab507d7452f9f886e490773e567952812d5c4a78

            SHA256

            8381c37a7cc111b71caa850aafbfc99b114d33a6f7aee666eafe6e5ac912c79f

            SHA512

            48b670e99952471c4a700babd9b52c90b453ad95096742c19232a6b9666ba7378cb9091087b296c8d49cc593de602324e97353ebb84cc9837ec0653aba1a077c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            bc86c6d13a1d90a4f7d10e7c7567b16a

            SHA1

            ab507d7452f9f886e490773e567952812d5c4a78

            SHA256

            8381c37a7cc111b71caa850aafbfc99b114d33a6f7aee666eafe6e5ac912c79f

            SHA512

            48b670e99952471c4a700babd9b52c90b453ad95096742c19232a6b9666ba7378cb9091087b296c8d49cc593de602324e97353ebb84cc9837ec0653aba1a077c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            e3d776458959203af81f1a19d873ef7d

            SHA1

            a341fcba8fc9bd96008e8102b02106f2f9f12338

            SHA256

            2329c2d05974f4939517286f0720e19834414ef760dfe58122b1df530cfd866e

            SHA512

            25b0f8147ceeff99add13db906ba404be864e9bbfdca542f768a82303685bbd8371dd498193b47438e169612fa2805d94a03b96f25b52031c1dcaf3ad75ff959

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            e3d776458959203af81f1a19d873ef7d

            SHA1

            a341fcba8fc9bd96008e8102b02106f2f9f12338

            SHA256

            2329c2d05974f4939517286f0720e19834414ef760dfe58122b1df530cfd866e

            SHA512

            25b0f8147ceeff99add13db906ba404be864e9bbfdca542f768a82303685bbd8371dd498193b47438e169612fa2805d94a03b96f25b52031c1dcaf3ad75ff959

          • \Users\Admin\AppData\Local\Temp\nsjB001.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsjB001.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjB001.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjB001.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjB001.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0ffab184f4a5eebf0f22593a84b98a48

            SHA1

            1093549e495c5a160d27acb95918d7017616064e

            SHA256

            f8d4260c65ed49183544cc3aefe41171c5fd220ba0cd98c292fa8caebc2334a5

            SHA512

            752830efff9c99a4db96a3797b0e8b1a3262ea7f988ef896822e22e7afa1d8457bab0d26a87ce2959cc1de83d17d5255c5a17cf76e5743b1a553f56a4ff16a4c

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0ffab184f4a5eebf0f22593a84b98a48

            SHA1

            1093549e495c5a160d27acb95918d7017616064e

            SHA256

            f8d4260c65ed49183544cc3aefe41171c5fd220ba0cd98c292fa8caebc2334a5

            SHA512

            752830efff9c99a4db96a3797b0e8b1a3262ea7f988ef896822e22e7afa1d8457bab0d26a87ce2959cc1de83d17d5255c5a17cf76e5743b1a553f56a4ff16a4c

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0ffab184f4a5eebf0f22593a84b98a48

            SHA1

            1093549e495c5a160d27acb95918d7017616064e

            SHA256

            f8d4260c65ed49183544cc3aefe41171c5fd220ba0cd98c292fa8caebc2334a5

            SHA512

            752830efff9c99a4db96a3797b0e8b1a3262ea7f988ef896822e22e7afa1d8457bab0d26a87ce2959cc1de83d17d5255c5a17cf76e5743b1a553f56a4ff16a4c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            2297fadb73b09fd9e6d8caf0eced61f3

            SHA1

            59a2d91e37ad13947b44131b4552cbde524fe3d4

            SHA256

            0e3e6de86ef7c71ced6b25059383d917561ac26ab5308d24767f7f4aec4cdd0a

            SHA512

            35563f14f03cf26d96dcb9c1245b44eaed2e5dbc24f666dac8d36872320b59f2b73d5941c90d5400ee500ac1f27d0f451151471e825cfa7b44eb0230d0140948

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            2297fadb73b09fd9e6d8caf0eced61f3

            SHA1

            59a2d91e37ad13947b44131b4552cbde524fe3d4

            SHA256

            0e3e6de86ef7c71ced6b25059383d917561ac26ab5308d24767f7f4aec4cdd0a

            SHA512

            35563f14f03cf26d96dcb9c1245b44eaed2e5dbc24f666dac8d36872320b59f2b73d5941c90d5400ee500ac1f27d0f451151471e825cfa7b44eb0230d0140948

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3037f9c7782f347908d103d5fb268043

            SHA1

            59e955b93183df10581d60cb2d0d2b252c0d98dd

            SHA256

            1198944306113325864322fc177622d9b693710965cbd4d0e6799a27f3126ad0

            SHA512

            c7bba7d3641eaa7bcf7be96a5defcee612d9abe6b9c5e493c23edec146766b781e5231f961ead8e43a37c53f5e0da2f4111b695588b7f6256dfb0a7f56e99162

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            bc86c6d13a1d90a4f7d10e7c7567b16a

            SHA1

            ab507d7452f9f886e490773e567952812d5c4a78

            SHA256

            8381c37a7cc111b71caa850aafbfc99b114d33a6f7aee666eafe6e5ac912c79f

            SHA512

            48b670e99952471c4a700babd9b52c90b453ad95096742c19232a6b9666ba7378cb9091087b296c8d49cc593de602324e97353ebb84cc9837ec0653aba1a077c

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            e3d776458959203af81f1a19d873ef7d

            SHA1

            a341fcba8fc9bd96008e8102b02106f2f9f12338

            SHA256

            2329c2d05974f4939517286f0720e19834414ef760dfe58122b1df530cfd866e

            SHA512

            25b0f8147ceeff99add13db906ba404be864e9bbfdca542f768a82303685bbd8371dd498193b47438e169612fa2805d94a03b96f25b52031c1dcaf3ad75ff959

          • memory/240-87-0x0000000000000000-mapping.dmp

          • memory/376-61-0x0000000000000000-mapping.dmp

          • memory/396-76-0x0000000000000000-mapping.dmp

          • memory/824-64-0x0000000000000000-mapping.dmp

          • memory/860-62-0x0000000000000000-mapping.dmp

          • memory/1252-80-0x0000000000000000-mapping.dmp

          • memory/1496-59-0x0000000000000000-mapping.dmp

          • memory/1552-70-0x0000000000000000-mapping.dmp

          • memory/1624-81-0x0000000000000000-mapping.dmp

          • memory/1808-54-0x0000000075511000-0x0000000075513000-memory.dmp

            Filesize

            8KB

          • memory/1808-58-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1808-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1988-57-0x0000000000000000-mapping.dmp

          • memory/2012-86-0x0000000000000000-mapping.dmp