Analysis

  • max time kernel
    145s
  • max time network
    177s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:28

General

  • Target

    3e43f7d7309a969f50cb1fda9ab3cee048234caceb8eed76ff76cb054fd32ca2.exe

  • Size

    602KB

  • MD5

    92a526b3e5a121485f000a732aeb3bb2

  • SHA1

    ecc8f40a28ba417ec4e4550d2242d73303147956

  • SHA256

    3e43f7d7309a969f50cb1fda9ab3cee048234caceb8eed76ff76cb054fd32ca2

  • SHA512

    80a1a524b63b34e078fc83b1f122083f0e3e3bc0a8b606bc6e0a5dadfc77329a8416e8147ac5f04e9669fef03f51279cc40ddebb8e7a26b55e69801c97919645

  • SSDEEP

    12288:kIny5DYTkIU8nFK+fnCXvGJmgf59sIEiUVv5gn9xVRQkGS5SzTh:CUTkX8nFDPCGJdf5aIEiUV5k7

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\3e43f7d7309a969f50cb1fda9ab3cee048234caceb8eed76ff76cb054fd32ca2.exe
    "C:\Users\Admin\AppData\Local\Temp\3e43f7d7309a969f50cb1fda9ab3cee048234caceb8eed76ff76cb054fd32ca2.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:1188
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1524
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4940
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3560
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4076
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3500
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2184
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:4132
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:768
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1324
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1732
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2360
          • 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:3824
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1688

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsx5A95.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsx5A95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx5A95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx5A95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx5A95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx5A95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx5A95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx5A95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx5A95.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f41dedb6a4848674e00f2d0fd4823daa

            SHA1

            ca872c193eb2161ff5838f743e63465a5fc0a666

            SHA256

            93b51e02e4551a9eac2f3f4262b8bf2d9bbeae2828ab71f038a3957a48df5538

            SHA512

            68f0a5491bd05d5d357ac6c5ad87e8041606580b8e9ebdc814f3ace86278a2bde24421fbc14ad4c5f69fb313a4de004b2373414cce34d9286f3e2dfdeaa5229b

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f41dedb6a4848674e00f2d0fd4823daa

            SHA1

            ca872c193eb2161ff5838f743e63465a5fc0a666

            SHA256

            93b51e02e4551a9eac2f3f4262b8bf2d9bbeae2828ab71f038a3957a48df5538

            SHA512

            68f0a5491bd05d5d357ac6c5ad87e8041606580b8e9ebdc814f3ace86278a2bde24421fbc14ad4c5f69fb313a4de004b2373414cce34d9286f3e2dfdeaa5229b

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f41dedb6a4848674e00f2d0fd4823daa

            SHA1

            ca872c193eb2161ff5838f743e63465a5fc0a666

            SHA256

            93b51e02e4551a9eac2f3f4262b8bf2d9bbeae2828ab71f038a3957a48df5538

            SHA512

            68f0a5491bd05d5d357ac6c5ad87e8041606580b8e9ebdc814f3ace86278a2bde24421fbc14ad4c5f69fb313a4de004b2373414cce34d9286f3e2dfdeaa5229b

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f41dedb6a4848674e00f2d0fd4823daa

            SHA1

            ca872c193eb2161ff5838f743e63465a5fc0a666

            SHA256

            93b51e02e4551a9eac2f3f4262b8bf2d9bbeae2828ab71f038a3957a48df5538

            SHA512

            68f0a5491bd05d5d357ac6c5ad87e8041606580b8e9ebdc814f3ace86278a2bde24421fbc14ad4c5f69fb313a4de004b2373414cce34d9286f3e2dfdeaa5229b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            2da0452d655b1d0fb21d44ddc0b71f69

            SHA1

            914a79ea9bae0cd0d9a05624126c27587d8cd0e5

            SHA256

            038d28fa194a0c2e70b98cb974730982be104b8feb7224f2c9995a6cd4c88818

            SHA512

            0b8ac234ea55b8dd6213b9003d6faf1f233e3100fdd4b6144e8eb2ee9713ad72102c9a979ff6d988eca42ab5f59c08bb3c83631ed31f7c36c0865d524d7158be

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            2da0452d655b1d0fb21d44ddc0b71f69

            SHA1

            914a79ea9bae0cd0d9a05624126c27587d8cd0e5

            SHA256

            038d28fa194a0c2e70b98cb974730982be104b8feb7224f2c9995a6cd4c88818

            SHA512

            0b8ac234ea55b8dd6213b9003d6faf1f233e3100fdd4b6144e8eb2ee9713ad72102c9a979ff6d988eca42ab5f59c08bb3c83631ed31f7c36c0865d524d7158be

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            2da0452d655b1d0fb21d44ddc0b71f69

            SHA1

            914a79ea9bae0cd0d9a05624126c27587d8cd0e5

            SHA256

            038d28fa194a0c2e70b98cb974730982be104b8feb7224f2c9995a6cd4c88818

            SHA512

            0b8ac234ea55b8dd6213b9003d6faf1f233e3100fdd4b6144e8eb2ee9713ad72102c9a979ff6d988eca42ab5f59c08bb3c83631ed31f7c36c0865d524d7158be

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3f72a1d32e4a7180901af51fd09d81a6

            SHA1

            a89ba04131e47e9b4dc6926166e10df9f027a6ea

            SHA256

            c43e61b595265b0f92606bc05c6a51c6edc6fd39d0c4253e13ff02ab06628175

            SHA512

            8ce19245c1ffd42c73d3d8e9fd93f271e736b34668ebb3966dfa44cfad0eab24598531a14a9aa80a28e79b097d9e73500a49954033bdd4d03fb2ac4c11f1f604

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            3f72a1d32e4a7180901af51fd09d81a6

            SHA1

            a89ba04131e47e9b4dc6926166e10df9f027a6ea

            SHA256

            c43e61b595265b0f92606bc05c6a51c6edc6fd39d0c4253e13ff02ab06628175

            SHA512

            8ce19245c1ffd42c73d3d8e9fd93f271e736b34668ebb3966dfa44cfad0eab24598531a14a9aa80a28e79b097d9e73500a49954033bdd4d03fb2ac4c11f1f604

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2e3860dc05ebfd01b3511d9bed13dc54

            SHA1

            7f1fa903e119d6c4d3c81fab3483b202d1877b89

            SHA256

            da3317472e010af3586858d7da8df687595339c21fdd81e4748a13b9d126fb62

            SHA512

            b1c08ad20413b0460126c23b57e127b9296e6843676684f5887b8efad9a69a123dd10a00375cdab5fb4739e5fd79513e15bc95011094c493f1ff8e6d42372973

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2e3860dc05ebfd01b3511d9bed13dc54

            SHA1

            7f1fa903e119d6c4d3c81fab3483b202d1877b89

            SHA256

            da3317472e010af3586858d7da8df687595339c21fdd81e4748a13b9d126fb62

            SHA512

            b1c08ad20413b0460126c23b57e127b9296e6843676684f5887b8efad9a69a123dd10a00375cdab5fb4739e5fd79513e15bc95011094c493f1ff8e6d42372973

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            2e3860dc05ebfd01b3511d9bed13dc54

            SHA1

            7f1fa903e119d6c4d3c81fab3483b202d1877b89

            SHA256

            da3317472e010af3586858d7da8df687595339c21fdd81e4748a13b9d126fb62

            SHA512

            b1c08ad20413b0460126c23b57e127b9296e6843676684f5887b8efad9a69a123dd10a00375cdab5fb4739e5fd79513e15bc95011094c493f1ff8e6d42372973

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            faa0fead6fca101f321d0eb28335e9a8

            SHA1

            5fecf5a97b0b5559821b3593c7a02f687ed0b7d3

            SHA256

            18f64c139f3713ad7429bb4e323e15ecf0381e149ea9d34856a69c7372d5f8b4

            SHA512

            4b2112082be5534c141b556d3556420d837c0b4633b95df0b44c0c25da35a1b06f0b4dcb15c72b425a39853b83bd59122a7a29decde7f840f7618feb15c6c92a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            faa0fead6fca101f321d0eb28335e9a8

            SHA1

            5fecf5a97b0b5559821b3593c7a02f687ed0b7d3

            SHA256

            18f64c139f3713ad7429bb4e323e15ecf0381e149ea9d34856a69c7372d5f8b4

            SHA512

            4b2112082be5534c141b556d3556420d837c0b4633b95df0b44c0c25da35a1b06f0b4dcb15c72b425a39853b83bd59122a7a29decde7f840f7618feb15c6c92a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            faa0fead6fca101f321d0eb28335e9a8

            SHA1

            5fecf5a97b0b5559821b3593c7a02f687ed0b7d3

            SHA256

            18f64c139f3713ad7429bb4e323e15ecf0381e149ea9d34856a69c7372d5f8b4

            SHA512

            4b2112082be5534c141b556d3556420d837c0b4633b95df0b44c0c25da35a1b06f0b4dcb15c72b425a39853b83bd59122a7a29decde7f840f7618feb15c6c92a

          • memory/768-158-0x0000000000000000-mapping.dmp

          • memory/1188-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1188-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1324-159-0x0000000000000000-mapping.dmp

          • memory/1524-136-0x0000000000000000-mapping.dmp

          • memory/1732-165-0x0000000000000000-mapping.dmp

          • memory/2184-147-0x0000000000000000-mapping.dmp

          • memory/2360-166-0x0000000000000000-mapping.dmp

          • memory/3500-142-0x0000000000000000-mapping.dmp

          • memory/3560-140-0x0000000000000000-mapping.dmp

          • memory/4076-141-0x0000000000000000-mapping.dmp

          • memory/4132-153-0x0000000000000000-mapping.dmp

          • memory/4940-137-0x0000000000000000-mapping.dmp