Analysis

  • max time kernel
    45s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:57

General

  • Target

    3ff67ee2c842521fe2127362d4621367ca75c9a288b6454307778428a021b67b.exe

  • Size

    446KB

  • MD5

    6f0796e80ec3cd3e63413a042156d364

  • SHA1

    359e42a99ed8bcedfe02428389bdf5156ddd1ef3

  • SHA256

    3ff67ee2c842521fe2127362d4621367ca75c9a288b6454307778428a021b67b

  • SHA512

    6692433b1bbf8c5e608a892a71fbad55c26a8ba48f48ce42f003b7288fda35b8ce83bb07ec9824883a441194dfd30fed1cf6d6cea4ebf564b3793b74ed958116

  • SSDEEP

    12288:3G2J+JEzrX769QwWNQtQdcj3Y8NKb8pkQ/ba/YmKv8DJlb8Oq/E:3G2J+JE329Qdff8MK/aBgEas

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\3ff67ee2c842521fe2127362d4621367ca75c9a288b6454307778428a021b67b.exe
    "C:\Users\Admin\AppData\Local\Temp\3ff67ee2c842521fe2127362d4621367ca75c9a288b6454307778428a021b67b.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:1000
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1756
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:956
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1568
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1744
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:952
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1964
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:276
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1180
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1128
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1996
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1660
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:688
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1488

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f30ecb41e0d35b7d74d192ba7b88ae57

            SHA1

            4553099c1fe95baf7bf2b8595e3e4d837c6517f1

            SHA256

            b0c33dfb3d1d67fe09920bdaf486b3694e0ce78dd3003acaa40dde1bf1368030

            SHA512

            17b359a2c01c121b01c21a8a61c87442da133f54c05bc5c31a0dbc24cc6c87c56b2d73e2bf490fac2d845baa1f3f9494ae4ab315f47b236721a8a2e41718d834

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            388ab03a3d6ed1b39e9fcc1222614927

            SHA1

            09e98e598a0ddd28e2c0bb2c71e344b8fce465b6

            SHA256

            f3e1692290dd474b94e9f40cde17fcd2aa621317e65e0f0d57346f84f4a5b859

            SHA512

            8ccb43d55cab35ea4e729382a08bf3d572452a73f8d3234d92a802d82ce9c541458bef5190f6e7ce37c05ae06c7811021acf1326b86de8bcec3c45ca99e85ef6

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3d11a7de0de2a3a1b1355130c2182ae8

            SHA1

            4cee0110f9f2f3ab4b548f061bf9381d159fb3e2

            SHA256

            a7171cb45f9efb5d59ae5f92974a6db29af969c2437baf41c524e7314cf5a718

            SHA512

            0881f711962dba2b80326c14c261774f5cf002e1d2df40cb7a361a7d049089077c77b51e92e2dd5c19a2a5ec4aa85acb11368a964c3d3d7af8a316e9a0de9fc4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6721e7bebbe2ac723bd477b0a2d946ce

            SHA1

            5803e95099c1bc840af07c2186a8a9d3bb635cba

            SHA256

            e48c4c36ac3d1dbb7be3b333a6fa603b062a6ff757fe6b92d049c85fff28bb61

            SHA512

            e21b12d1b9815f7ba50710c4b95d29ea26163470b025513ce8e2cb90493f5b80a2f2f106a75d751f94b0913bd8c2dcb4c76de44aba2f2a91e404fb3ae9c84a73

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6721e7bebbe2ac723bd477b0a2d946ce

            SHA1

            5803e95099c1bc840af07c2186a8a9d3bb635cba

            SHA256

            e48c4c36ac3d1dbb7be3b333a6fa603b062a6ff757fe6b92d049c85fff28bb61

            SHA512

            e21b12d1b9815f7ba50710c4b95d29ea26163470b025513ce8e2cb90493f5b80a2f2f106a75d751f94b0913bd8c2dcb4c76de44aba2f2a91e404fb3ae9c84a73

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            97d316dfbbe416eac45e8a064bb4d67e

            SHA1

            8d8f60ca44feb5d920a4eb7a5049e45593da7df5

            SHA256

            39ab5de64ea9ba645f27e1bb7e60a76375f5ecba4f6d04723df9436c6f131712

            SHA512

            d3697bf03ec10bf9cdcfa7a0881131022c25cbff7bac686e9753d91745090f3c34e2ccf70d86fb562169e8c34882b528dc11d827155f7b3438481fb6468ee4e7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            97d316dfbbe416eac45e8a064bb4d67e

            SHA1

            8d8f60ca44feb5d920a4eb7a5049e45593da7df5

            SHA256

            39ab5de64ea9ba645f27e1bb7e60a76375f5ecba4f6d04723df9436c6f131712

            SHA512

            d3697bf03ec10bf9cdcfa7a0881131022c25cbff7bac686e9753d91745090f3c34e2ccf70d86fb562169e8c34882b528dc11d827155f7b3438481fb6468ee4e7

          • \Users\Admin\AppData\Local\Temp\nsj544B.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj544B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj544B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj544B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj544B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f30ecb41e0d35b7d74d192ba7b88ae57

            SHA1

            4553099c1fe95baf7bf2b8595e3e4d837c6517f1

            SHA256

            b0c33dfb3d1d67fe09920bdaf486b3694e0ce78dd3003acaa40dde1bf1368030

            SHA512

            17b359a2c01c121b01c21a8a61c87442da133f54c05bc5c31a0dbc24cc6c87c56b2d73e2bf490fac2d845baa1f3f9494ae4ab315f47b236721a8a2e41718d834

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f30ecb41e0d35b7d74d192ba7b88ae57

            SHA1

            4553099c1fe95baf7bf2b8595e3e4d837c6517f1

            SHA256

            b0c33dfb3d1d67fe09920bdaf486b3694e0ce78dd3003acaa40dde1bf1368030

            SHA512

            17b359a2c01c121b01c21a8a61c87442da133f54c05bc5c31a0dbc24cc6c87c56b2d73e2bf490fac2d845baa1f3f9494ae4ab315f47b236721a8a2e41718d834

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f30ecb41e0d35b7d74d192ba7b88ae57

            SHA1

            4553099c1fe95baf7bf2b8595e3e4d837c6517f1

            SHA256

            b0c33dfb3d1d67fe09920bdaf486b3694e0ce78dd3003acaa40dde1bf1368030

            SHA512

            17b359a2c01c121b01c21a8a61c87442da133f54c05bc5c31a0dbc24cc6c87c56b2d73e2bf490fac2d845baa1f3f9494ae4ab315f47b236721a8a2e41718d834

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            388ab03a3d6ed1b39e9fcc1222614927

            SHA1

            09e98e598a0ddd28e2c0bb2c71e344b8fce465b6

            SHA256

            f3e1692290dd474b94e9f40cde17fcd2aa621317e65e0f0d57346f84f4a5b859

            SHA512

            8ccb43d55cab35ea4e729382a08bf3d572452a73f8d3234d92a802d82ce9c541458bef5190f6e7ce37c05ae06c7811021acf1326b86de8bcec3c45ca99e85ef6

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            388ab03a3d6ed1b39e9fcc1222614927

            SHA1

            09e98e598a0ddd28e2c0bb2c71e344b8fce465b6

            SHA256

            f3e1692290dd474b94e9f40cde17fcd2aa621317e65e0f0d57346f84f4a5b859

            SHA512

            8ccb43d55cab35ea4e729382a08bf3d572452a73f8d3234d92a802d82ce9c541458bef5190f6e7ce37c05ae06c7811021acf1326b86de8bcec3c45ca99e85ef6

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3d11a7de0de2a3a1b1355130c2182ae8

            SHA1

            4cee0110f9f2f3ab4b548f061bf9381d159fb3e2

            SHA256

            a7171cb45f9efb5d59ae5f92974a6db29af969c2437baf41c524e7314cf5a718

            SHA512

            0881f711962dba2b80326c14c261774f5cf002e1d2df40cb7a361a7d049089077c77b51e92e2dd5c19a2a5ec4aa85acb11368a964c3d3d7af8a316e9a0de9fc4

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6721e7bebbe2ac723bd477b0a2d946ce

            SHA1

            5803e95099c1bc840af07c2186a8a9d3bb635cba

            SHA256

            e48c4c36ac3d1dbb7be3b333a6fa603b062a6ff757fe6b92d049c85fff28bb61

            SHA512

            e21b12d1b9815f7ba50710c4b95d29ea26163470b025513ce8e2cb90493f5b80a2f2f106a75d751f94b0913bd8c2dcb4c76de44aba2f2a91e404fb3ae9c84a73

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            97d316dfbbe416eac45e8a064bb4d67e

            SHA1

            8d8f60ca44feb5d920a4eb7a5049e45593da7df5

            SHA256

            39ab5de64ea9ba645f27e1bb7e60a76375f5ecba4f6d04723df9436c6f131712

            SHA512

            d3697bf03ec10bf9cdcfa7a0881131022c25cbff7bac686e9753d91745090f3c34e2ccf70d86fb562169e8c34882b528dc11d827155f7b3438481fb6468ee4e7

          • memory/276-75-0x0000000000000000-mapping.dmp

          • memory/952-63-0x0000000000000000-mapping.dmp

          • memory/956-58-0x0000000000000000-mapping.dmp

          • memory/1000-54-0x0000000075201000-0x0000000075203000-memory.dmp

            Filesize

            8KB

          • memory/1128-80-0x0000000000000000-mapping.dmp

          • memory/1180-79-0x0000000000000000-mapping.dmp

          • memory/1568-60-0x0000000000000000-mapping.dmp

          • memory/1660-86-0x0000000000000000-mapping.dmp

          • memory/1744-61-0x0000000000000000-mapping.dmp

          • memory/1756-57-0x0000000000000000-mapping.dmp

          • memory/1964-69-0x0000000000000000-mapping.dmp

          • memory/1996-85-0x0000000000000000-mapping.dmp