Analysis

  • max time kernel
    46s
  • 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 10:30

General

  • Target

    2b71c309090560200ab8c5810019aca65c25371e1c4cf49233a449fb6eefd479.exe

  • Size

    602KB

  • MD5

    aeb1d8cf504a42cc8e9c6ae26cf2e618

  • SHA1

    eefac3d62e2fc9c909e2e532ecef55db5c151b5f

  • SHA256

    2b71c309090560200ab8c5810019aca65c25371e1c4cf49233a449fb6eefd479

  • SHA512

    5b7ef89bb40926b1349131830e720f768ab7ec80923d18a34b1d712f7ecd584b9f31c49f752e4cb9b7466c5bd3ccd8dcc85386bcc093c123442e9d55d25fa63b

  • SSDEEP

    12288:+Iny5DYTgBona4tgJxE2sfD6Pw7v0UNNLSL5Ktx8Ar2EbjyCujtzz:gUTgBonTtgJxwkwvNVEmWMb/ql

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\2b71c309090560200ab8c5810019aca65c25371e1c4cf49233a449fb6eefd479.exe
    "C:\Users\Admin\AppData\Local\Temp\2b71c309090560200ab8c5810019aca65c25371e1c4cf49233a449fb6eefd479.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:1584
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1200
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1560
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1160
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:560
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1948
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:820
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1996
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1820
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2036
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1976
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1772
          • 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:1668

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8a7ec768e78ccc3be434f333b84b775a

            SHA1

            15929dd5b910753205196c8860785f4fc5342b82

            SHA256

            d5dc829844df10275673b9d536c6363200ba0d3d7ab684c173a1bc3c82972507

            SHA512

            2e0b9e8059271787c048673d0a57a5ac4e34e2fdc360237f11a3c725554851099a33329cce4ea6f44f2d68b423cf1c37ee408ed88f9b87cbf0884a913061a7a0

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cd940480ccb3536265ed761ab18811ba

            SHA1

            c771c671670cff58a900e45fcd7698ecdf5de3fb

            SHA256

            4097fe5b808cd047884925d07a896e6bf20c157a195d525e630929e2c40b27fd

            SHA512

            0ec687e329e1e6b43e2b7cadbf902e22ee27f2c7d703e9cc607a214bb8f8df5aa4491fe8778aca2be7dd7416da7b28f87b44f25c1bcdb9afac481bd1e1f71e53

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            24033b7910c5d6afc6905f1ba7f4ef84

            SHA1

            a3a84e377dfe7e20de1bfedbfa9283d9be3d6635

            SHA256

            ab164c0842b1e58887b689554d40ed6dd0a3077dd891317f95b49d1fdac4ada6

            SHA512

            f273127c57806a292d7c6b59332ffee620f09fc252d0fc89e547dcb647bb1f9498782e974c46a37f88a5098251830b7f4ae0a6e040bfbfc42794ce0c4ba0a1ae

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            3f67864af21424e57c2f0d089cc97077

            SHA1

            26cd4102e9e98d9699056006943a6a7462942283

            SHA256

            5a7cacad5ec32faa60acac52e851c1a247df95bb24f74a25cff6dcae57ad88e8

            SHA512

            4de6c48ca2bc9f38e939e874c04bb1ab10968dda94a05e13585c547dd15d359f22fc9896dde58300872b6908955f76491390b2d12dc024731efb5886d88891b4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            3f67864af21424e57c2f0d089cc97077

            SHA1

            26cd4102e9e98d9699056006943a6a7462942283

            SHA256

            5a7cacad5ec32faa60acac52e851c1a247df95bb24f74a25cff6dcae57ad88e8

            SHA512

            4de6c48ca2bc9f38e939e874c04bb1ab10968dda94a05e13585c547dd15d359f22fc9896dde58300872b6908955f76491390b2d12dc024731efb5886d88891b4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            82702073eaa897a7edf520d21cf749f7

            SHA1

            be1cabd247eb8c69d013d067703ba675fd18ac48

            SHA256

            8a8060ed5d9d1f39ec56168613a83366d54ecadf62678a5b63eaf3dfd0ee1a65

            SHA512

            e5c37e2b7fe3d313619262b816bef87da243571e3976027f0e5be761d8dbe39897c0dea67a01f36d443a80d355f8a237c55272e62b5b06dad34cd4b738f3f861

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            82702073eaa897a7edf520d21cf749f7

            SHA1

            be1cabd247eb8c69d013d067703ba675fd18ac48

            SHA256

            8a8060ed5d9d1f39ec56168613a83366d54ecadf62678a5b63eaf3dfd0ee1a65

            SHA512

            e5c37e2b7fe3d313619262b816bef87da243571e3976027f0e5be761d8dbe39897c0dea67a01f36d443a80d355f8a237c55272e62b5b06dad34cd4b738f3f861

          • \Users\Admin\AppData\Local\Temp\nsyAC68.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyAC68.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyAC68.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyAC68.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyAC68.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8a7ec768e78ccc3be434f333b84b775a

            SHA1

            15929dd5b910753205196c8860785f4fc5342b82

            SHA256

            d5dc829844df10275673b9d536c6363200ba0d3d7ab684c173a1bc3c82972507

            SHA512

            2e0b9e8059271787c048673d0a57a5ac4e34e2fdc360237f11a3c725554851099a33329cce4ea6f44f2d68b423cf1c37ee408ed88f9b87cbf0884a913061a7a0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8a7ec768e78ccc3be434f333b84b775a

            SHA1

            15929dd5b910753205196c8860785f4fc5342b82

            SHA256

            d5dc829844df10275673b9d536c6363200ba0d3d7ab684c173a1bc3c82972507

            SHA512

            2e0b9e8059271787c048673d0a57a5ac4e34e2fdc360237f11a3c725554851099a33329cce4ea6f44f2d68b423cf1c37ee408ed88f9b87cbf0884a913061a7a0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8a7ec768e78ccc3be434f333b84b775a

            SHA1

            15929dd5b910753205196c8860785f4fc5342b82

            SHA256

            d5dc829844df10275673b9d536c6363200ba0d3d7ab684c173a1bc3c82972507

            SHA512

            2e0b9e8059271787c048673d0a57a5ac4e34e2fdc360237f11a3c725554851099a33329cce4ea6f44f2d68b423cf1c37ee408ed88f9b87cbf0884a913061a7a0

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cd940480ccb3536265ed761ab18811ba

            SHA1

            c771c671670cff58a900e45fcd7698ecdf5de3fb

            SHA256

            4097fe5b808cd047884925d07a896e6bf20c157a195d525e630929e2c40b27fd

            SHA512

            0ec687e329e1e6b43e2b7cadbf902e22ee27f2c7d703e9cc607a214bb8f8df5aa4491fe8778aca2be7dd7416da7b28f87b44f25c1bcdb9afac481bd1e1f71e53

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            cd940480ccb3536265ed761ab18811ba

            SHA1

            c771c671670cff58a900e45fcd7698ecdf5de3fb

            SHA256

            4097fe5b808cd047884925d07a896e6bf20c157a195d525e630929e2c40b27fd

            SHA512

            0ec687e329e1e6b43e2b7cadbf902e22ee27f2c7d703e9cc607a214bb8f8df5aa4491fe8778aca2be7dd7416da7b28f87b44f25c1bcdb9afac481bd1e1f71e53

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            24033b7910c5d6afc6905f1ba7f4ef84

            SHA1

            a3a84e377dfe7e20de1bfedbfa9283d9be3d6635

            SHA256

            ab164c0842b1e58887b689554d40ed6dd0a3077dd891317f95b49d1fdac4ada6

            SHA512

            f273127c57806a292d7c6b59332ffee620f09fc252d0fc89e547dcb647bb1f9498782e974c46a37f88a5098251830b7f4ae0a6e040bfbfc42794ce0c4ba0a1ae

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            3f67864af21424e57c2f0d089cc97077

            SHA1

            26cd4102e9e98d9699056006943a6a7462942283

            SHA256

            5a7cacad5ec32faa60acac52e851c1a247df95bb24f74a25cff6dcae57ad88e8

            SHA512

            4de6c48ca2bc9f38e939e874c04bb1ab10968dda94a05e13585c547dd15d359f22fc9896dde58300872b6908955f76491390b2d12dc024731efb5886d88891b4

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            82702073eaa897a7edf520d21cf749f7

            SHA1

            be1cabd247eb8c69d013d067703ba675fd18ac48

            SHA256

            8a8060ed5d9d1f39ec56168613a83366d54ecadf62678a5b63eaf3dfd0ee1a65

            SHA512

            e5c37e2b7fe3d313619262b816bef87da243571e3976027f0e5be761d8dbe39897c0dea67a01f36d443a80d355f8a237c55272e62b5b06dad34cd4b738f3f861

          • memory/560-62-0x0000000000000000-mapping.dmp

          • memory/820-70-0x0000000000000000-mapping.dmp

          • memory/1160-61-0x0000000000000000-mapping.dmp

          • memory/1200-58-0x0000000000000000-mapping.dmp

          • memory/1560-59-0x0000000000000000-mapping.dmp

          • memory/1584-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1584-57-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1584-54-0x0000000075E61000-0x0000000075E63000-memory.dmp

            Filesize

            8KB

          • memory/1772-87-0x0000000000000000-mapping.dmp

          • memory/1820-80-0x0000000000000000-mapping.dmp

          • memory/1948-64-0x0000000000000000-mapping.dmp

          • memory/1976-86-0x0000000000000000-mapping.dmp

          • memory/1996-76-0x0000000000000000-mapping.dmp

          • memory/2036-81-0x0000000000000000-mapping.dmp