Analysis

  • max time kernel
    90s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:05

General

  • Target

    ffdda79b50ce0cb4e57aae5032734848530a6d891291bb5df9c0d96642407898.exe

  • Size

    603KB

  • MD5

    3719af75fb07219b0c9f48de4cb7c798

  • SHA1

    4d50a9d5a11b2eca382ab13da73d4757b5ea569b

  • SHA256

    ffdda79b50ce0cb4e57aae5032734848530a6d891291bb5df9c0d96642407898

  • SHA512

    d475dc9f05dbe51caa8f00fdaafc04b33ade0f24c1d6500a76b657e5dc1305ae388a3a721db87fc8734d6b616305b718e5bee68aa81154a1f26ea2e236f05cd9

  • SSDEEP

    12288:YIny5DYTfI5vCSEfhWi68JObi+ttLd5mRTKDgoOlXnBJiycD0maBz:2UTfeaSEfhF68JOu0RyKDgoOlXBQycDI

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ffdda79b50ce0cb4e57aae5032734848530a6d891291bb5df9c0d96642407898.exe
    "C:\Users\Admin\AppData\Local\Temp\ffdda79b50ce0cb4e57aae5032734848530a6d891291bb5df9c0d96642407898.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:516
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3256
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:3516
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4260
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1752
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3760
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1344
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4952
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4928
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4040
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2464
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3160
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:2096
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4764

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsoB85A.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsoB85A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsoB85A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsoB85A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsoB85A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsoB85A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsoB85A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsoB85A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsoB85A.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4b059b4b94383be561790e5e6e9ffc69

            SHA1

            0f702e8f4277ef3272778a25e96eccba33df46b1

            SHA256

            541b5f7fd128e9a5fe2f00a8c7cd70e7a6615a5a9f4ea734ad0f147a70775935

            SHA512

            21952defa555a3e82318edfd497b1e6ba6bb541ddc1d75e8babc6c615f5ece2d50f8ad1ca494fe583bd105fadd97aefb65c365782a4fe36d42ecc09ff5a2a2ff

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4b059b4b94383be561790e5e6e9ffc69

            SHA1

            0f702e8f4277ef3272778a25e96eccba33df46b1

            SHA256

            541b5f7fd128e9a5fe2f00a8c7cd70e7a6615a5a9f4ea734ad0f147a70775935

            SHA512

            21952defa555a3e82318edfd497b1e6ba6bb541ddc1d75e8babc6c615f5ece2d50f8ad1ca494fe583bd105fadd97aefb65c365782a4fe36d42ecc09ff5a2a2ff

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4b059b4b94383be561790e5e6e9ffc69

            SHA1

            0f702e8f4277ef3272778a25e96eccba33df46b1

            SHA256

            541b5f7fd128e9a5fe2f00a8c7cd70e7a6615a5a9f4ea734ad0f147a70775935

            SHA512

            21952defa555a3e82318edfd497b1e6ba6bb541ddc1d75e8babc6c615f5ece2d50f8ad1ca494fe583bd105fadd97aefb65c365782a4fe36d42ecc09ff5a2a2ff

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            4b059b4b94383be561790e5e6e9ffc69

            SHA1

            0f702e8f4277ef3272778a25e96eccba33df46b1

            SHA256

            541b5f7fd128e9a5fe2f00a8c7cd70e7a6615a5a9f4ea734ad0f147a70775935

            SHA512

            21952defa555a3e82318edfd497b1e6ba6bb541ddc1d75e8babc6c615f5ece2d50f8ad1ca494fe583bd105fadd97aefb65c365782a4fe36d42ecc09ff5a2a2ff

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            5f48d1929d63f49770310b75d3d0094c

            SHA1

            d1e3e012da2da1cd5277bda7b039ae65df2f57e8

            SHA256

            b08b4136ed7ab7067bee0809bcc484aa28ba3732663cabb4723bd0c960435db1

            SHA512

            8514999e280b28b8edecac9097114abdb465ca39f1da399c04ca25a83fcbe5abdcda458c199dabcca3a8a7faaffd17777f0bc1a2b333cde335fe416e28256665

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            5f48d1929d63f49770310b75d3d0094c

            SHA1

            d1e3e012da2da1cd5277bda7b039ae65df2f57e8

            SHA256

            b08b4136ed7ab7067bee0809bcc484aa28ba3732663cabb4723bd0c960435db1

            SHA512

            8514999e280b28b8edecac9097114abdb465ca39f1da399c04ca25a83fcbe5abdcda458c199dabcca3a8a7faaffd17777f0bc1a2b333cde335fe416e28256665

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            5f48d1929d63f49770310b75d3d0094c

            SHA1

            d1e3e012da2da1cd5277bda7b039ae65df2f57e8

            SHA256

            b08b4136ed7ab7067bee0809bcc484aa28ba3732663cabb4723bd0c960435db1

            SHA512

            8514999e280b28b8edecac9097114abdb465ca39f1da399c04ca25a83fcbe5abdcda458c199dabcca3a8a7faaffd17777f0bc1a2b333cde335fe416e28256665

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7569f17fa030b03657adce04efd403d2

            SHA1

            0dafc2d01c9d18acd4fade5fc82a8462bace9c0a

            SHA256

            5b4a2994f668fab5cfc85bf80e924fa3c0e6a51f09223d1ff421b43b01f6eaca

            SHA512

            092ab4c772d6681c00c9e525c5fb8879bbae5abd4b413a1f705fa77bce37b752f20eb180fe8bf7874ff4973f3dffb2ccdac9d75f68679057ebe685c9504e1b99

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7569f17fa030b03657adce04efd403d2

            SHA1

            0dafc2d01c9d18acd4fade5fc82a8462bace9c0a

            SHA256

            5b4a2994f668fab5cfc85bf80e924fa3c0e6a51f09223d1ff421b43b01f6eaca

            SHA512

            092ab4c772d6681c00c9e525c5fb8879bbae5abd4b413a1f705fa77bce37b752f20eb180fe8bf7874ff4973f3dffb2ccdac9d75f68679057ebe685c9504e1b99

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            fd5014b6e1513c4add56c0626154348f

            SHA1

            cd6ec75d8e0c2ca228b90ff80e830dac2b4c81a4

            SHA256

            c6a98c1b23c86b7197ed16c87392115584722f0f0b552493a4abea484d730a5c

            SHA512

            5a4cda6f9fd39c8b8448707128e0175bffeb759e6e82262dea91ceb85001778f44a33ebe34dab0513e30b1c2418902f24c7765b975b254e755b3360ca1952ba7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            fd5014b6e1513c4add56c0626154348f

            SHA1

            cd6ec75d8e0c2ca228b90ff80e830dac2b4c81a4

            SHA256

            c6a98c1b23c86b7197ed16c87392115584722f0f0b552493a4abea484d730a5c

            SHA512

            5a4cda6f9fd39c8b8448707128e0175bffeb759e6e82262dea91ceb85001778f44a33ebe34dab0513e30b1c2418902f24c7765b975b254e755b3360ca1952ba7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            fd5014b6e1513c4add56c0626154348f

            SHA1

            cd6ec75d8e0c2ca228b90ff80e830dac2b4c81a4

            SHA256

            c6a98c1b23c86b7197ed16c87392115584722f0f0b552493a4abea484d730a5c

            SHA512

            5a4cda6f9fd39c8b8448707128e0175bffeb759e6e82262dea91ceb85001778f44a33ebe34dab0513e30b1c2418902f24c7765b975b254e755b3360ca1952ba7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            a2cc6088513708b827c31ac04d0c44d1

            SHA1

            bb41dd32692fef14161a108f1bcd67d0555b1175

            SHA256

            8ff3a75c1ac2e10d38d4a3b2f3b75f18a9c4399f8d04e71d85c367930c2d0c1c

            SHA512

            3cb0f863f8f31aabad3e30067b33e8c84cb3be8b203c4925ee47a4c3b5b854e30a302dd0a8fb55051c4824444a0c0d7eb2a7520c90a17cf85509717c9e9b6e99

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            a2cc6088513708b827c31ac04d0c44d1

            SHA1

            bb41dd32692fef14161a108f1bcd67d0555b1175

            SHA256

            8ff3a75c1ac2e10d38d4a3b2f3b75f18a9c4399f8d04e71d85c367930c2d0c1c

            SHA512

            3cb0f863f8f31aabad3e30067b33e8c84cb3be8b203c4925ee47a4c3b5b854e30a302dd0a8fb55051c4824444a0c0d7eb2a7520c90a17cf85509717c9e9b6e99

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            a2cc6088513708b827c31ac04d0c44d1

            SHA1

            bb41dd32692fef14161a108f1bcd67d0555b1175

            SHA256

            8ff3a75c1ac2e10d38d4a3b2f3b75f18a9c4399f8d04e71d85c367930c2d0c1c

            SHA512

            3cb0f863f8f31aabad3e30067b33e8c84cb3be8b203c4925ee47a4c3b5b854e30a302dd0a8fb55051c4824444a0c0d7eb2a7520c90a17cf85509717c9e9b6e99

          • memory/516-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/516-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/516-137-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1344-147-0x0000000000000000-mapping.dmp

          • memory/1752-141-0x0000000000000000-mapping.dmp

          • memory/2464-165-0x0000000000000000-mapping.dmp

          • memory/3160-166-0x0000000000000000-mapping.dmp

          • memory/3256-135-0x0000000000000000-mapping.dmp

          • memory/3516-136-0x0000000000000000-mapping.dmp

          • memory/3760-142-0x0000000000000000-mapping.dmp

          • memory/4040-159-0x0000000000000000-mapping.dmp

          • memory/4260-140-0x0000000000000000-mapping.dmp

          • memory/4928-158-0x0000000000000000-mapping.dmp

          • memory/4952-153-0x0000000000000000-mapping.dmp