Analysis

  • max time kernel
    99s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:16

General

  • Target

    a96aed03d6b476763cb2c76432322844b6c19dac912afb26c5d92b77ab731375.exe

  • Size

    602KB

  • MD5

    5303640b857b28626b2ab5e568ade62d

  • SHA1

    4622abc9f64002f589d5abc9f5d428c6a9eb0b4f

  • SHA256

    a96aed03d6b476763cb2c76432322844b6c19dac912afb26c5d92b77ab731375

  • SHA512

    3e280286674eaee8a56010f713e4430aad31de4bedbf0bf3b6ac14247de9a1aaa563c5a2b924213323fa66ebcbf3e24074cfe453763aeac646bf4374cc0b2933

  • SSDEEP

    12288:iIny5DYTaYOuLtYuQYFTuxp9KgCLw0Fcrvz:EUTvLp7Fixp6Fmz

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\a96aed03d6b476763cb2c76432322844b6c19dac912afb26c5d92b77ab731375.exe
    "C:\Users\Admin\AppData\Local\Temp\a96aed03d6b476763cb2c76432322844b6c19dac912afb26c5d92b77ab731375.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:824
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1000
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:588
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:324
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:908
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1168
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1816
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:316
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1956
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2008
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1456
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:840
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1724
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1828

          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

            11edc1b70057eb02694818e8a0947e5f

            SHA1

            2deb9a4808ee236e518d9bc250776070cca52ea2

            SHA256

            bfe6b7a7f306bfb1048ff54891485185342dcbff68d7a328885b763901d6d88e

            SHA512

            b0c2426cf22215db8d3fd54e342eb74827aef8c0ec12deee64a89b5df93bd6d7cb7e4dfba33b8f4412cba308195562d3d9d638af3b2b988134b3609b0ddc8d78

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

            244KB

            MD5

            4d3b8e10601f6d2e0f2402882b9cca97

            SHA1

            762772a0054ea82845d7c0a0b674f8b4a552a5fd

            SHA256

            129515372cc8b39255f8084a6ddf3f3e4341b4719411496d94c2dcd0f1c3f289

            SHA512

            ca4bb9496f431578b12dc342808a46dca7aef5548e0fe1bde4cc16bfdc92f987d06e6b3c44f9c12d593ac645865738dc9b2ae172a16b2c541f7ee8c7adda0569

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

            108KB

            MD5

            249e8ce3d74b4d1456bf5f0b65715d78

            SHA1

            b4aeec19c234c126b89abf447d6eb0eba3417352

            SHA256

            ba56889f24634df14e2f46a45c366437e4e46a8776ae0f7eac3388bbe961383f

            SHA512

            bd1cf96cab78f8b2d592da3c419d24d5068efa5d761977a41f1c7e4d1e1ed0daa165d9f596d543205aa3d1ec5bc94262ef1b10b282b069be8084e6baa0cabfd3

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

            176KB

            MD5

            320f23914009f0726cf314fe0602f3c6

            SHA1

            1a0697c167c4aab7f68b677ff63e67dabc8ce73a

            SHA256

            03c2471c64df0134383a0a1832ffa7ab659871cd8758fc8b2de873ccbefb3b00

            SHA512

            271d5c3f4b47f0eb4a9aa28340f543224a900848c8512890c97ae409157191652a406ddad509f34ffc4872a27cb01f4b66bc0b922edb956c90ad1f6a3300a6da

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

            176KB

            MD5

            320f23914009f0726cf314fe0602f3c6

            SHA1

            1a0697c167c4aab7f68b677ff63e67dabc8ce73a

            SHA256

            03c2471c64df0134383a0a1832ffa7ab659871cd8758fc8b2de873ccbefb3b00

            SHA512

            271d5c3f4b47f0eb4a9aa28340f543224a900848c8512890c97ae409157191652a406ddad509f34ffc4872a27cb01f4b66bc0b922edb956c90ad1f6a3300a6da

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

            158KB

            MD5

            777bcb37a7dbfcfe2494c48c7e71fcbc

            SHA1

            379ed55e3d40930b9daefee26814484a29709904

            SHA256

            a9ef40e7e25d02be346e78f6758a87b3866d55a29116ba8024a662cf1fc038a0

            SHA512

            661f3e95cdd99d6d3f6f448c30add8e74399cd8d7391f1bd8195a20d076441f2cd2977e04b14c82623fbb0586bccb0ef3b5222eaf7386c7b59d2d4aabc066e00

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

            158KB

            MD5

            777bcb37a7dbfcfe2494c48c7e71fcbc

            SHA1

            379ed55e3d40930b9daefee26814484a29709904

            SHA256

            a9ef40e7e25d02be346e78f6758a87b3866d55a29116ba8024a662cf1fc038a0

            SHA512

            661f3e95cdd99d6d3f6f448c30add8e74399cd8d7391f1bd8195a20d076441f2cd2977e04b14c82623fbb0586bccb0ef3b5222eaf7386c7b59d2d4aabc066e00

          • \Users\Admin\AppData\Local\Temp\nsyE42A.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyE42A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyE42A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyE42A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyE42A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            11edc1b70057eb02694818e8a0947e5f

            SHA1

            2deb9a4808ee236e518d9bc250776070cca52ea2

            SHA256

            bfe6b7a7f306bfb1048ff54891485185342dcbff68d7a328885b763901d6d88e

            SHA512

            b0c2426cf22215db8d3fd54e342eb74827aef8c0ec12deee64a89b5df93bd6d7cb7e4dfba33b8f4412cba308195562d3d9d638af3b2b988134b3609b0ddc8d78

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            11edc1b70057eb02694818e8a0947e5f

            SHA1

            2deb9a4808ee236e518d9bc250776070cca52ea2

            SHA256

            bfe6b7a7f306bfb1048ff54891485185342dcbff68d7a328885b763901d6d88e

            SHA512

            b0c2426cf22215db8d3fd54e342eb74827aef8c0ec12deee64a89b5df93bd6d7cb7e4dfba33b8f4412cba308195562d3d9d638af3b2b988134b3609b0ddc8d78

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            11edc1b70057eb02694818e8a0947e5f

            SHA1

            2deb9a4808ee236e518d9bc250776070cca52ea2

            SHA256

            bfe6b7a7f306bfb1048ff54891485185342dcbff68d7a328885b763901d6d88e

            SHA512

            b0c2426cf22215db8d3fd54e342eb74827aef8c0ec12deee64a89b5df93bd6d7cb7e4dfba33b8f4412cba308195562d3d9d638af3b2b988134b3609b0ddc8d78

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            4d3b8e10601f6d2e0f2402882b9cca97

            SHA1

            762772a0054ea82845d7c0a0b674f8b4a552a5fd

            SHA256

            129515372cc8b39255f8084a6ddf3f3e4341b4719411496d94c2dcd0f1c3f289

            SHA512

            ca4bb9496f431578b12dc342808a46dca7aef5548e0fe1bde4cc16bfdc92f987d06e6b3c44f9c12d593ac645865738dc9b2ae172a16b2c541f7ee8c7adda0569

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            4d3b8e10601f6d2e0f2402882b9cca97

            SHA1

            762772a0054ea82845d7c0a0b674f8b4a552a5fd

            SHA256

            129515372cc8b39255f8084a6ddf3f3e4341b4719411496d94c2dcd0f1c3f289

            SHA512

            ca4bb9496f431578b12dc342808a46dca7aef5548e0fe1bde4cc16bfdc92f987d06e6b3c44f9c12d593ac645865738dc9b2ae172a16b2c541f7ee8c7adda0569

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            249e8ce3d74b4d1456bf5f0b65715d78

            SHA1

            b4aeec19c234c126b89abf447d6eb0eba3417352

            SHA256

            ba56889f24634df14e2f46a45c366437e4e46a8776ae0f7eac3388bbe961383f

            SHA512

            bd1cf96cab78f8b2d592da3c419d24d5068efa5d761977a41f1c7e4d1e1ed0daa165d9f596d543205aa3d1ec5bc94262ef1b10b282b069be8084e6baa0cabfd3

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            320f23914009f0726cf314fe0602f3c6

            SHA1

            1a0697c167c4aab7f68b677ff63e67dabc8ce73a

            SHA256

            03c2471c64df0134383a0a1832ffa7ab659871cd8758fc8b2de873ccbefb3b00

            SHA512

            271d5c3f4b47f0eb4a9aa28340f543224a900848c8512890c97ae409157191652a406ddad509f34ffc4872a27cb01f4b66bc0b922edb956c90ad1f6a3300a6da

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            777bcb37a7dbfcfe2494c48c7e71fcbc

            SHA1

            379ed55e3d40930b9daefee26814484a29709904

            SHA256

            a9ef40e7e25d02be346e78f6758a87b3866d55a29116ba8024a662cf1fc038a0

            SHA512

            661f3e95cdd99d6d3f6f448c30add8e74399cd8d7391f1bd8195a20d076441f2cd2977e04b14c82623fbb0586bccb0ef3b5222eaf7386c7b59d2d4aabc066e00

          • memory/316-77-0x0000000000000000-mapping.dmp
          • memory/324-61-0x0000000000000000-mapping.dmp
          • memory/588-59-0x0000000000000000-mapping.dmp
          • memory/824-75-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/824-54-0x0000000075E11000-0x0000000075E13000-memory.dmp
            Filesize

            8KB

          • memory/824-58-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/824-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/840-88-0x0000000000000000-mapping.dmp
          • memory/908-62-0x0000000000000000-mapping.dmp
          • memory/1000-57-0x0000000000000000-mapping.dmp
          • memory/1168-64-0x0000000000000000-mapping.dmp
          • memory/1456-87-0x0000000000000000-mapping.dmp
          • memory/1816-70-0x0000000000000000-mapping.dmp
          • memory/1956-81-0x0000000000000000-mapping.dmp
          • memory/2008-82-0x0000000000000000-mapping.dmp