Analysis

  • max time kernel
    64s
  • 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 10:25

General

  • Target

    556b8d48978890116860c49392035cc5a5dc06dd3e603a5e39c20613be3bb662.exe

  • Size

    602KB

  • MD5

    8bf04c351a1c50b2619e03d645ff50c1

  • SHA1

    c00feb93781f5dce2e978273842800bc47df70e4

  • SHA256

    556b8d48978890116860c49392035cc5a5dc06dd3e603a5e39c20613be3bb662

  • SHA512

    fd4fb789b09fceecd863393a95d8144b80191c913e3ea7a465f82dc9b107e3bd59ee594f3463acdfbce4b8d21ac0bb013dc94e792a2f65eedf5a390415433d7e

  • SSDEEP

    12288:8Iny5DYTWDLcBSHyvRISaAaoRksg0iYhYWnDhMsQm3vo0Z9l:aUTWDgeWRIqaGhRGsQvml

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\556b8d48978890116860c49392035cc5a5dc06dd3e603a5e39c20613be3bb662.exe
    "C:\Users\Admin\AppData\Local\Temp\556b8d48978890116860c49392035cc5a5dc06dd3e603a5e39c20613be3bb662.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:960
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1068
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:560
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1880
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1508
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1876
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1644
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:760
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1652
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1756
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1752
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1788
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1692
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1416

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0d2c9030f29ce93d7df38239200d83c1

            SHA1

            3789a0a676b775a2e9eb5e56816cd91b565e8bfc

            SHA256

            1b85eb2a3ab79a22185513467e6c09dc01d585d747ed9ec3d65d02c36269cc98

            SHA512

            366b5165152e856855b5925078be2a02f4c5188d712615330aa2e489d065f7a226ed615daf497726aa4f1a81ee26e768a2b5a732efb7746caac31659383cd52b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            fb02e0155a2a56610a194657eec58e47

            SHA1

            884b1da207b39abe965df492a6546e2551286d08

            SHA256

            9dbc8eb3c6bc11fd873f5106da57f33b6eb07493c2c1bd179058a05881a06622

            SHA512

            dbbf8ce507edb305cdc4d8d47cfa51ca031c740fba0fc7821b303bbe6d83fbf76db068399d8d3f3dff8c2951fdb0f556ff0e9519aeadbb1a64401ee86c7d8029

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            d37fbc2debcaaf519a0ece49f02d6bfd

            SHA1

            676e08b570789b885982d38741a9534ba10f147f

            SHA256

            a9e0998bbee3b811c8abfbb416440b641851ceca4ca0d82f841a6cd7e2118c21

            SHA512

            12362313fae3b123a3f46bf0b634132bceb4043777bcb5804f352bbd5c5662455cf56b8f2d9e4f45b133f81787f15324e44a41ba1af9279b1259387bbe36d73b

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4dd42b07c79598609fd238335c74bf44

            SHA1

            391e3e44ee1d195b00ca4a95b723cf3c235551bb

            SHA256

            e7b98ea046d8ef9142a3c3e62089c7c0b725a2df3ab1ac819a3904afca5650fd

            SHA512

            2998f84d41f8cf148f7219410aa779efdc1ec5cfff3c8211d13065fdeff80676694bc6ca132780cf6f30efbcae6f506e570715340ff6f7daa74230769c7e7a11

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4dd42b07c79598609fd238335c74bf44

            SHA1

            391e3e44ee1d195b00ca4a95b723cf3c235551bb

            SHA256

            e7b98ea046d8ef9142a3c3e62089c7c0b725a2df3ab1ac819a3904afca5650fd

            SHA512

            2998f84d41f8cf148f7219410aa779efdc1ec5cfff3c8211d13065fdeff80676694bc6ca132780cf6f30efbcae6f506e570715340ff6f7daa74230769c7e7a11

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            f255c83a6e98e12d9105faa001663ce1

            SHA1

            e58ee9f16f25c8b94d637f00f42cbab1a10b8b77

            SHA256

            500f6b95a1ec2aa231eb28111bb1f2394a8ab460805b96c714ec1e2ea1f2722c

            SHA512

            d2361aac60c73abcdbd9f34f0885e70e305d12a3230c92b47f5a14ea9b623f42b5ac827d7e6514cf6f400917806b719818468e0d0a5fd59afae8a2b4bf0ae933

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            f255c83a6e98e12d9105faa001663ce1

            SHA1

            e58ee9f16f25c8b94d637f00f42cbab1a10b8b77

            SHA256

            500f6b95a1ec2aa231eb28111bb1f2394a8ab460805b96c714ec1e2ea1f2722c

            SHA512

            d2361aac60c73abcdbd9f34f0885e70e305d12a3230c92b47f5a14ea9b623f42b5ac827d7e6514cf6f400917806b719818468e0d0a5fd59afae8a2b4bf0ae933

          • \Users\Admin\AppData\Local\Temp\nseB474.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nseB474.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseB474.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseB474.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseB474.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0d2c9030f29ce93d7df38239200d83c1

            SHA1

            3789a0a676b775a2e9eb5e56816cd91b565e8bfc

            SHA256

            1b85eb2a3ab79a22185513467e6c09dc01d585d747ed9ec3d65d02c36269cc98

            SHA512

            366b5165152e856855b5925078be2a02f4c5188d712615330aa2e489d065f7a226ed615daf497726aa4f1a81ee26e768a2b5a732efb7746caac31659383cd52b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0d2c9030f29ce93d7df38239200d83c1

            SHA1

            3789a0a676b775a2e9eb5e56816cd91b565e8bfc

            SHA256

            1b85eb2a3ab79a22185513467e6c09dc01d585d747ed9ec3d65d02c36269cc98

            SHA512

            366b5165152e856855b5925078be2a02f4c5188d712615330aa2e489d065f7a226ed615daf497726aa4f1a81ee26e768a2b5a732efb7746caac31659383cd52b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0d2c9030f29ce93d7df38239200d83c1

            SHA1

            3789a0a676b775a2e9eb5e56816cd91b565e8bfc

            SHA256

            1b85eb2a3ab79a22185513467e6c09dc01d585d747ed9ec3d65d02c36269cc98

            SHA512

            366b5165152e856855b5925078be2a02f4c5188d712615330aa2e489d065f7a226ed615daf497726aa4f1a81ee26e768a2b5a732efb7746caac31659383cd52b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            fb02e0155a2a56610a194657eec58e47

            SHA1

            884b1da207b39abe965df492a6546e2551286d08

            SHA256

            9dbc8eb3c6bc11fd873f5106da57f33b6eb07493c2c1bd179058a05881a06622

            SHA512

            dbbf8ce507edb305cdc4d8d47cfa51ca031c740fba0fc7821b303bbe6d83fbf76db068399d8d3f3dff8c2951fdb0f556ff0e9519aeadbb1a64401ee86c7d8029

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            fb02e0155a2a56610a194657eec58e47

            SHA1

            884b1da207b39abe965df492a6546e2551286d08

            SHA256

            9dbc8eb3c6bc11fd873f5106da57f33b6eb07493c2c1bd179058a05881a06622

            SHA512

            dbbf8ce507edb305cdc4d8d47cfa51ca031c740fba0fc7821b303bbe6d83fbf76db068399d8d3f3dff8c2951fdb0f556ff0e9519aeadbb1a64401ee86c7d8029

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            d37fbc2debcaaf519a0ece49f02d6bfd

            SHA1

            676e08b570789b885982d38741a9534ba10f147f

            SHA256

            a9e0998bbee3b811c8abfbb416440b641851ceca4ca0d82f841a6cd7e2118c21

            SHA512

            12362313fae3b123a3f46bf0b634132bceb4043777bcb5804f352bbd5c5662455cf56b8f2d9e4f45b133f81787f15324e44a41ba1af9279b1259387bbe36d73b

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4dd42b07c79598609fd238335c74bf44

            SHA1

            391e3e44ee1d195b00ca4a95b723cf3c235551bb

            SHA256

            e7b98ea046d8ef9142a3c3e62089c7c0b725a2df3ab1ac819a3904afca5650fd

            SHA512

            2998f84d41f8cf148f7219410aa779efdc1ec5cfff3c8211d13065fdeff80676694bc6ca132780cf6f30efbcae6f506e570715340ff6f7daa74230769c7e7a11

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            f255c83a6e98e12d9105faa001663ce1

            SHA1

            e58ee9f16f25c8b94d637f00f42cbab1a10b8b77

            SHA256

            500f6b95a1ec2aa231eb28111bb1f2394a8ab460805b96c714ec1e2ea1f2722c

            SHA512

            d2361aac60c73abcdbd9f34f0885e70e305d12a3230c92b47f5a14ea9b623f42b5ac827d7e6514cf6f400917806b719818468e0d0a5fd59afae8a2b4bf0ae933

          • memory/560-58-0x0000000000000000-mapping.dmp

          • memory/760-77-0x0000000000000000-mapping.dmp

          • memory/960-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/960-75-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/960-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/960-54-0x0000000075761000-0x0000000075763000-memory.dmp

            Filesize

            8KB

          • memory/1068-57-0x0000000000000000-mapping.dmp

          • memory/1508-62-0x0000000000000000-mapping.dmp

          • memory/1644-70-0x0000000000000000-mapping.dmp

          • memory/1652-81-0x0000000000000000-mapping.dmp

          • memory/1752-87-0x0000000000000000-mapping.dmp

          • memory/1756-82-0x0000000000000000-mapping.dmp

          • memory/1788-88-0x0000000000000000-mapping.dmp

          • memory/1876-64-0x0000000000000000-mapping.dmp

          • memory/1880-61-0x0000000000000000-mapping.dmp