Analysis

  • max time kernel
    17s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2022, 14:34

General

  • Target

    4ccbb5b23b47e7ec9e82fe6275803079d45b94eb801e141bdc459f89688b12eb.exe

  • Size

    831KB

  • MD5

    55f7522fe16674c17664dcd447b60cd7

  • SHA1

    3720702961c3314ca55067f60513abce4bdba26d

  • SHA256

    4ccbb5b23b47e7ec9e82fe6275803079d45b94eb801e141bdc459f89688b12eb

  • SHA512

    e5e61abbde1e2ecf6da4c703c59620747249ddda0ee7d5dd4779163f253d9dfe570bdf098fbf4c6ef4b85e41fad51a73ee468348fcd7dc1937cf723f1c76784c

  • SSDEEP

    24576:crfGR2wDeRMTAuUVnJYJCFW2t6x5N7Tmc:cYYRMTAVvzFWwo5Nv

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\4ccbb5b23b47e7ec9e82fe6275803079d45b94eb801e141bdc459f89688b12eb.exe
    "C:\Users\Admin\AppData\Local\Temp\4ccbb5b23b47e7ec9e82fe6275803079d45b94eb801e141bdc459f89688b12eb.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:1788
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:880
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:916
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1376
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1480
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1292
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1524
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1688
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1932
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1752
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1488
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1192
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:2016
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:472

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a057235bb53793107c287e4a028bdaa7

            SHA1

            ade24302cd08a79edeaa22d8b2f26ae8a5254e34

            SHA256

            649d0cc4c04dabd5c56220d6fc32a6ff20f0bc86c65ec3ef89c438978d26d92c

            SHA512

            4afabbf2fc65ab657f079f0eb33c836289ac16ac32c5c3391cf17c65d426a84aab0754f9dbe9602c56ae93791b553d844e31cfc324d0fb48318f255e1b4accd6

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            427KB

            MD5

            67f15ff71d1a6cef08e0845c02bd6fc4

            SHA1

            c46560f4cfb497f6cd7dfde6cd6fdd565724fd59

            SHA256

            1a99a056d7dcb57e4ee3038733f4cecfb9181b0876f92ef770eb3636bd403e55

            SHA512

            eb51d7703d18c7be5ddf2c079c6c63e0ae34ab1746cd207a2c738da5d315a6cac9fc5e8dc41ad1582c199e9d1979a094458e56cb67133c25c780582ffe11a68b

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            137KB

            MD5

            379ac6c486ff4384c1e1f6121ef3aaf3

            SHA1

            a6b7307f6567238ab7b7f1cfc497b89209ae6dcb

            SHA256

            5eb84b78572b51b5e0dd0147022c47c3f314c60c9a5747fa0597b2bdf989de88

            SHA512

            389f6d46c3f4910b7c0781d3367085df1802fcb9b33e9cc1148223630efdf11614eb8ccb2c14076245479d581972654c422eb9b555b6d1cb4e6d84217118cb58

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            331KB

            MD5

            135d0e86e935c45b72f77208a1f48a22

            SHA1

            9e6d18e216b209fd391cb58406fa0a64ba1c5a40

            SHA256

            c3d414e4d7a096285d039858a65b8d974b568c10351902c32047ff191c54ee59

            SHA512

            21430ce052167d3eb6ed214ed4d9d65c6aefc2d7875a243636589f7e71e4c94299551c92622f947b9ebabe3f42a2894397890dcac0fd837746e27701fb2919ed

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            331KB

            MD5

            135d0e86e935c45b72f77208a1f48a22

            SHA1

            9e6d18e216b209fd391cb58406fa0a64ba1c5a40

            SHA256

            c3d414e4d7a096285d039858a65b8d974b568c10351902c32047ff191c54ee59

            SHA512

            21430ce052167d3eb6ed214ed4d9d65c6aefc2d7875a243636589f7e71e4c94299551c92622f947b9ebabe3f42a2894397890dcac0fd837746e27701fb2919ed

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            186KB

            MD5

            fabf1b29dc7e356caf622036a6fb67af

            SHA1

            bcde5e97efe6f7c14aa86079117e82114c274d6d

            SHA256

            3db46d8a9009f266931f16f8f8f319d22d2ef77f0f84d612c700b568c3ab3928

            SHA512

            6923506e4570b2a30dc38e3e51bd1fb8d60fa6cf72fdca6b0e7667f26e6f2b6ac821d4a59cb34eec50af75a9a703391f3b48324499ab5b9b3cd55b715582a8c4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            186KB

            MD5

            fabf1b29dc7e356caf622036a6fb67af

            SHA1

            bcde5e97efe6f7c14aa86079117e82114c274d6d

            SHA256

            3db46d8a9009f266931f16f8f8f319d22d2ef77f0f84d612c700b568c3ab3928

            SHA512

            6923506e4570b2a30dc38e3e51bd1fb8d60fa6cf72fdca6b0e7667f26e6f2b6ac821d4a59cb34eec50af75a9a703391f3b48324499ab5b9b3cd55b715582a8c4

          • \Users\Admin\AppData\Local\Temp\nso4FD8.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso4FD8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso4FD8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso4FD8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso4FD8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a057235bb53793107c287e4a028bdaa7

            SHA1

            ade24302cd08a79edeaa22d8b2f26ae8a5254e34

            SHA256

            649d0cc4c04dabd5c56220d6fc32a6ff20f0bc86c65ec3ef89c438978d26d92c

            SHA512

            4afabbf2fc65ab657f079f0eb33c836289ac16ac32c5c3391cf17c65d426a84aab0754f9dbe9602c56ae93791b553d844e31cfc324d0fb48318f255e1b4accd6

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a057235bb53793107c287e4a028bdaa7

            SHA1

            ade24302cd08a79edeaa22d8b2f26ae8a5254e34

            SHA256

            649d0cc4c04dabd5c56220d6fc32a6ff20f0bc86c65ec3ef89c438978d26d92c

            SHA512

            4afabbf2fc65ab657f079f0eb33c836289ac16ac32c5c3391cf17c65d426a84aab0754f9dbe9602c56ae93791b553d844e31cfc324d0fb48318f255e1b4accd6

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a057235bb53793107c287e4a028bdaa7

            SHA1

            ade24302cd08a79edeaa22d8b2f26ae8a5254e34

            SHA256

            649d0cc4c04dabd5c56220d6fc32a6ff20f0bc86c65ec3ef89c438978d26d92c

            SHA512

            4afabbf2fc65ab657f079f0eb33c836289ac16ac32c5c3391cf17c65d426a84aab0754f9dbe9602c56ae93791b553d844e31cfc324d0fb48318f255e1b4accd6

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            427KB

            MD5

            67f15ff71d1a6cef08e0845c02bd6fc4

            SHA1

            c46560f4cfb497f6cd7dfde6cd6fdd565724fd59

            SHA256

            1a99a056d7dcb57e4ee3038733f4cecfb9181b0876f92ef770eb3636bd403e55

            SHA512

            eb51d7703d18c7be5ddf2c079c6c63e0ae34ab1746cd207a2c738da5d315a6cac9fc5e8dc41ad1582c199e9d1979a094458e56cb67133c25c780582ffe11a68b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            427KB

            MD5

            67f15ff71d1a6cef08e0845c02bd6fc4

            SHA1

            c46560f4cfb497f6cd7dfde6cd6fdd565724fd59

            SHA256

            1a99a056d7dcb57e4ee3038733f4cecfb9181b0876f92ef770eb3636bd403e55

            SHA512

            eb51d7703d18c7be5ddf2c079c6c63e0ae34ab1746cd207a2c738da5d315a6cac9fc5e8dc41ad1582c199e9d1979a094458e56cb67133c25c780582ffe11a68b

          • \Windows\SysWOW64\installd.exe

            Filesize

            137KB

            MD5

            379ac6c486ff4384c1e1f6121ef3aaf3

            SHA1

            a6b7307f6567238ab7b7f1cfc497b89209ae6dcb

            SHA256

            5eb84b78572b51b5e0dd0147022c47c3f314c60c9a5747fa0597b2bdf989de88

            SHA512

            389f6d46c3f4910b7c0781d3367085df1802fcb9b33e9cc1148223630efdf11614eb8ccb2c14076245479d581972654c422eb9b555b6d1cb4e6d84217118cb58

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            331KB

            MD5

            135d0e86e935c45b72f77208a1f48a22

            SHA1

            9e6d18e216b209fd391cb58406fa0a64ba1c5a40

            SHA256

            c3d414e4d7a096285d039858a65b8d974b568c10351902c32047ff191c54ee59

            SHA512

            21430ce052167d3eb6ed214ed4d9d65c6aefc2d7875a243636589f7e71e4c94299551c92622f947b9ebabe3f42a2894397890dcac0fd837746e27701fb2919ed

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            186KB

            MD5

            fabf1b29dc7e356caf622036a6fb67af

            SHA1

            bcde5e97efe6f7c14aa86079117e82114c274d6d

            SHA256

            3db46d8a9009f266931f16f8f8f319d22d2ef77f0f84d612c700b568c3ab3928

            SHA512

            6923506e4570b2a30dc38e3e51bd1fb8d60fa6cf72fdca6b0e7667f26e6f2b6ac821d4a59cb34eec50af75a9a703391f3b48324499ab5b9b3cd55b715582a8c4

          • memory/1788-54-0x0000000075B11000-0x0000000075B13000-memory.dmp

            Filesize

            8KB

          • memory/1788-59-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB

          • memory/1788-90-0x0000000000320000-0x00000000007BE000-memory.dmp

            Filesize

            4.6MB