Analysis

  • max time kernel
    34s
  • max time network
    39s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 11:00

General

  • Target

    040a1a799df5972a44b1e225c9658adb3b85af0a10078587a7e6a18e40220b96.exe

  • Size

    446KB

  • MD5

    0101f6f6ef8db0688a691d2628684feb

  • SHA1

    da4ce7f440cebe24868c291a58b0e01d58cd103a

  • SHA256

    040a1a799df5972a44b1e225c9658adb3b85af0a10078587a7e6a18e40220b96

  • SHA512

    9b76f76253d72e8cffcdf65cd1696f9cb5d83471eb497dbb480916ff943d796d4f41c636d87ffc90885f943f3ad03bd73a2bcf9a87dc07e6fa305293b6de16c1

  • SSDEEP

    12288:NWe5bZSC7ozNH3wLZVihtJmA9dngAvQIr1HSsepPV:NWe597CNH3mVYvgNH

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\040a1a799df5972a44b1e225c9658adb3b85af0a10078587a7e6a18e40220b96.exe
    "C:\Users\Admin\AppData\Local\Temp\040a1a799df5972a44b1e225c9658adb3b85af0a10078587a7e6a18e40220b96.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:1488
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2036
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:940
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1624
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1416
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1544
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1220
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:948
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1084
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1072
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1176
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1124
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1940
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1108

          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

            15d0c67dc3b37f98e119701453abf0d5

            SHA1

            3514b2d17260420d7ea59559f18ddc887f361872

            SHA256

            482b4a76c1e53900cbbe5575b134497ad3c418da207fcaee7a95bc38e0b7cd25

            SHA512

            7231aa60e35c430e9c3ba05da56c7985e4a6a9275ba9e5be98af6bd79c5379cb778876d4559fe6031a664e975e1bf16bd3f985210b50e1eaafcccbf337808564

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

            241KB

            MD5

            b6e49541bfad1f9c8966322525a2165e

            SHA1

            2c18a24b63e9530661f055bcf7de64c887119aaf

            SHA256

            bd42fbf8fb8f20007be1df840321b378de533449c73c53605d4e8b8d189b162c

            SHA512

            94074699c540e428b6f39966ec6eb1917293eacd759deb9039d1fa851dfb5743a7bbdd53c63933ebfbdab995ea0caedf44255751b18a79564d59de96022d51be

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

            108KB

            MD5

            cc91f43543ede3f3bc4649f82e48501b

            SHA1

            ef4249e0bbedbd32924a25872b2c2bf8f172a970

            SHA256

            eb296d068f8dd5b9396af0dd991746db31c3410e1b413f5f290e43533fc131ea

            SHA512

            c53d34e4cad5a3aae785f4582fc442a67560aa9fd842fc90feac6bc0eeac3f9bee0da8cb8713495f16f37212a02665355e391c0744b666264d9308204c6319da

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

            176KB

            MD5

            adbe5f1804c55bbb5c2d0e5c679517a3

            SHA1

            1947f55de0fb0d0dfeb0e5c905d5c8168d278e82

            SHA256

            3b62c26dc70c1e0941ef356930747c6d38adf5067e1bc295a0fed9aef5a2aaf5

            SHA512

            be7400f69bc1ea54390c64a1e4bca206ce29df80c57e43c964db9fc6f5ee409400f3d04d41a4067fe2162eecbbf3a504a017dc28f5032e783cc982d91f3c1805

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

            176KB

            MD5

            adbe5f1804c55bbb5c2d0e5c679517a3

            SHA1

            1947f55de0fb0d0dfeb0e5c905d5c8168d278e82

            SHA256

            3b62c26dc70c1e0941ef356930747c6d38adf5067e1bc295a0fed9aef5a2aaf5

            SHA512

            be7400f69bc1ea54390c64a1e4bca206ce29df80c57e43c964db9fc6f5ee409400f3d04d41a4067fe2162eecbbf3a504a017dc28f5032e783cc982d91f3c1805

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

            158KB

            MD5

            c000756fda98ffd73c502392025d2a90

            SHA1

            47c9e96914ff714edbd54b893cf01bd12c4efe0d

            SHA256

            1acb7308e7d53546bb436717651056a1108a9838a3e019400c09559c4263ed88

            SHA512

            2e75471b938f0be7959e51a66f43ca4ba8ba54a3c4f8e91a10e73b90ed996f478a0949f53b5a8008ceb22b841b6d79c1992f536689645c866934751852ad864c

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

            158KB

            MD5

            c000756fda98ffd73c502392025d2a90

            SHA1

            47c9e96914ff714edbd54b893cf01bd12c4efe0d

            SHA256

            1acb7308e7d53546bb436717651056a1108a9838a3e019400c09559c4263ed88

            SHA512

            2e75471b938f0be7959e51a66f43ca4ba8ba54a3c4f8e91a10e73b90ed996f478a0949f53b5a8008ceb22b841b6d79c1992f536689645c866934751852ad864c

          • \Users\Admin\AppData\Local\Temp\nsy41C4.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy41C4.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy41C4.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy41C4.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy41C4.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            15d0c67dc3b37f98e119701453abf0d5

            SHA1

            3514b2d17260420d7ea59559f18ddc887f361872

            SHA256

            482b4a76c1e53900cbbe5575b134497ad3c418da207fcaee7a95bc38e0b7cd25

            SHA512

            7231aa60e35c430e9c3ba05da56c7985e4a6a9275ba9e5be98af6bd79c5379cb778876d4559fe6031a664e975e1bf16bd3f985210b50e1eaafcccbf337808564

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            15d0c67dc3b37f98e119701453abf0d5

            SHA1

            3514b2d17260420d7ea59559f18ddc887f361872

            SHA256

            482b4a76c1e53900cbbe5575b134497ad3c418da207fcaee7a95bc38e0b7cd25

            SHA512

            7231aa60e35c430e9c3ba05da56c7985e4a6a9275ba9e5be98af6bd79c5379cb778876d4559fe6031a664e975e1bf16bd3f985210b50e1eaafcccbf337808564

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            15d0c67dc3b37f98e119701453abf0d5

            SHA1

            3514b2d17260420d7ea59559f18ddc887f361872

            SHA256

            482b4a76c1e53900cbbe5575b134497ad3c418da207fcaee7a95bc38e0b7cd25

            SHA512

            7231aa60e35c430e9c3ba05da56c7985e4a6a9275ba9e5be98af6bd79c5379cb778876d4559fe6031a664e975e1bf16bd3f985210b50e1eaafcccbf337808564

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            b6e49541bfad1f9c8966322525a2165e

            SHA1

            2c18a24b63e9530661f055bcf7de64c887119aaf

            SHA256

            bd42fbf8fb8f20007be1df840321b378de533449c73c53605d4e8b8d189b162c

            SHA512

            94074699c540e428b6f39966ec6eb1917293eacd759deb9039d1fa851dfb5743a7bbdd53c63933ebfbdab995ea0caedf44255751b18a79564d59de96022d51be

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            b6e49541bfad1f9c8966322525a2165e

            SHA1

            2c18a24b63e9530661f055bcf7de64c887119aaf

            SHA256

            bd42fbf8fb8f20007be1df840321b378de533449c73c53605d4e8b8d189b162c

            SHA512

            94074699c540e428b6f39966ec6eb1917293eacd759deb9039d1fa851dfb5743a7bbdd53c63933ebfbdab995ea0caedf44255751b18a79564d59de96022d51be

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            cc91f43543ede3f3bc4649f82e48501b

            SHA1

            ef4249e0bbedbd32924a25872b2c2bf8f172a970

            SHA256

            eb296d068f8dd5b9396af0dd991746db31c3410e1b413f5f290e43533fc131ea

            SHA512

            c53d34e4cad5a3aae785f4582fc442a67560aa9fd842fc90feac6bc0eeac3f9bee0da8cb8713495f16f37212a02665355e391c0744b666264d9308204c6319da

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            adbe5f1804c55bbb5c2d0e5c679517a3

            SHA1

            1947f55de0fb0d0dfeb0e5c905d5c8168d278e82

            SHA256

            3b62c26dc70c1e0941ef356930747c6d38adf5067e1bc295a0fed9aef5a2aaf5

            SHA512

            be7400f69bc1ea54390c64a1e4bca206ce29df80c57e43c964db9fc6f5ee409400f3d04d41a4067fe2162eecbbf3a504a017dc28f5032e783cc982d91f3c1805

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            c000756fda98ffd73c502392025d2a90

            SHA1

            47c9e96914ff714edbd54b893cf01bd12c4efe0d

            SHA256

            1acb7308e7d53546bb436717651056a1108a9838a3e019400c09559c4263ed88

            SHA512

            2e75471b938f0be7959e51a66f43ca4ba8ba54a3c4f8e91a10e73b90ed996f478a0949f53b5a8008ceb22b841b6d79c1992f536689645c866934751852ad864c

          • memory/940-58-0x0000000000000000-mapping.dmp
          • memory/948-75-0x0000000000000000-mapping.dmp
          • memory/1072-80-0x0000000000000000-mapping.dmp
          • memory/1084-79-0x0000000000000000-mapping.dmp
          • memory/1124-86-0x0000000000000000-mapping.dmp
          • memory/1176-85-0x0000000000000000-mapping.dmp
          • memory/1220-69-0x0000000000000000-mapping.dmp
          • memory/1416-61-0x0000000000000000-mapping.dmp
          • memory/1488-54-0x0000000075AD1000-0x0000000075AD3000-memory.dmp
            Filesize

            8KB

          • memory/1544-63-0x0000000000000000-mapping.dmp
          • memory/1624-60-0x0000000000000000-mapping.dmp
          • memory/2036-57-0x0000000000000000-mapping.dmp