Analysis

  • max time kernel
    44s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:12

General

  • Target

    c660fa45526353e54976d0e9819c08a7e66ac9089f97db4b3d4ec883572b5f4f.exe

  • Size

    603KB

  • MD5

    c6db89dc2d5fe1403cdd2ea50650fb88

  • SHA1

    9911bcf6dc18a90a272809b7f2853c0484ec3982

  • SHA256

    c660fa45526353e54976d0e9819c08a7e66ac9089f97db4b3d4ec883572b5f4f

  • SHA512

    a8e64ad786c7ff0b9cd1f3ce3fef6e1d92c01d0c5ec2d2347c2e54b6a498cf2e7e8bdcaa0911d94335f93f79020ee9540621ba3c90a40868955da35bf19b3412

  • SSDEEP

    12288:JIny5DYTQI8FPX+P0EecRAv+8h0JTpaZWlKxUdIM7AC7vX71KU96Zm:lUTQPFXEesAP0f8WlKuX0CrX7YUUZ

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\c660fa45526353e54976d0e9819c08a7e66ac9089f97db4b3d4ec883572b5f4f.exe
    "C:\Users\Admin\AppData\Local\Temp\c660fa45526353e54976d0e9819c08a7e66ac9089f97db4b3d4ec883572b5f4f.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:1176
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1704
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:108
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1744
        • 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:268
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:628
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1760
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:776
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:684
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1812
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:916
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1884
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1108

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            503d7efaa4d06e9585338eb926aabc72

            SHA1

            f3577b596f27e7650a687fd1c6c92d1cd9938d6e

            SHA256

            b987e4d8b568b8728c08b8ea69964c1abf7ace9e5b142e3cd0d24a3b30e042cb

            SHA512

            4d63041800d60ebb6833136089363d728dc66df8fa82c832cc9e37600151379530a93975174fee822029edb8a3bc4f087cb9b34dd167e74352f5f1d2a6ac30bb

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            63008e8ffc64a2ed7fb2aa1678c6f7a1

            SHA1

            a750a1914400f382291d3e6e5862fe8c3446eae2

            SHA256

            063805345cf1ab4ee5510f177fbc4c3bb0735dd91f548a197cb2a850605824bc

            SHA512

            ac483bfeae6187c54c63c5469f1a918ee17092848ccc361a2b1a80322b340d64c36ac1fd66a506453d5334aa133fa274fc7c209dc790ec4e2876cc4b123b7c1b

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            2dfa9d8a9d3cca90c9d1413544830377

            SHA1

            2340de566e7bfbdb53aafb44372f08297ab634a7

            SHA256

            1d4d5291baccb645fb9fbb12e332e3bbe8712ed643c2b8dce74c80dfac630858

            SHA512

            64e9ce2f37aca21bf3c6ad6a107c816c87126fe336801a733171950d04b144be4a37469ba1cab30ef742417c5d84b1b0c6ceac5f6c2c5120462d6f12df1946a3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4f46fe1bbcefd0e2294c3782d6ddd3c4

            SHA1

            bce82dcaa7cdfd99113c9a65733c7c190ce28753

            SHA256

            536787630caeb1ab2002b8875382ea669045ee4c0b4f061c4444f87fd36de695

            SHA512

            afacbcd308126dc8d2504c59595ff3ce6ab1b619d9f245ec56084bba0b874f4cbdd6972a4aef2e8c95266a62e2ed0fc799519fa0ac9091a9bb6367ef1a2e60f2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4f46fe1bbcefd0e2294c3782d6ddd3c4

            SHA1

            bce82dcaa7cdfd99113c9a65733c7c190ce28753

            SHA256

            536787630caeb1ab2002b8875382ea669045ee4c0b4f061c4444f87fd36de695

            SHA512

            afacbcd308126dc8d2504c59595ff3ce6ab1b619d9f245ec56084bba0b874f4cbdd6972a4aef2e8c95266a62e2ed0fc799519fa0ac9091a9bb6367ef1a2e60f2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            177ec36309766653b2df55657aba40a6

            SHA1

            69762605a6440e5a845f701a31b9c0fd365fc5ce

            SHA256

            00d99a6fe180883f5ef7bc73a302258cebfc40b78792947e3d59edce4a222c55

            SHA512

            d184cdb48b9c16d96bf70a35284dfd6ce7ff82800af1b7357d2abac75bb158ac75060fd1d4c129fc8ae5bbdcf3a9c9b5256e0c9f4c88d7a33ed24c66b30e5967

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            177ec36309766653b2df55657aba40a6

            SHA1

            69762605a6440e5a845f701a31b9c0fd365fc5ce

            SHA256

            00d99a6fe180883f5ef7bc73a302258cebfc40b78792947e3d59edce4a222c55

            SHA512

            d184cdb48b9c16d96bf70a35284dfd6ce7ff82800af1b7357d2abac75bb158ac75060fd1d4c129fc8ae5bbdcf3a9c9b5256e0c9f4c88d7a33ed24c66b30e5967

          • \Users\Admin\AppData\Local\Temp\nst25EB.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst25EB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst25EB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst25EB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst25EB.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            503d7efaa4d06e9585338eb926aabc72

            SHA1

            f3577b596f27e7650a687fd1c6c92d1cd9938d6e

            SHA256

            b987e4d8b568b8728c08b8ea69964c1abf7ace9e5b142e3cd0d24a3b30e042cb

            SHA512

            4d63041800d60ebb6833136089363d728dc66df8fa82c832cc9e37600151379530a93975174fee822029edb8a3bc4f087cb9b34dd167e74352f5f1d2a6ac30bb

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            503d7efaa4d06e9585338eb926aabc72

            SHA1

            f3577b596f27e7650a687fd1c6c92d1cd9938d6e

            SHA256

            b987e4d8b568b8728c08b8ea69964c1abf7ace9e5b142e3cd0d24a3b30e042cb

            SHA512

            4d63041800d60ebb6833136089363d728dc66df8fa82c832cc9e37600151379530a93975174fee822029edb8a3bc4f087cb9b34dd167e74352f5f1d2a6ac30bb

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            503d7efaa4d06e9585338eb926aabc72

            SHA1

            f3577b596f27e7650a687fd1c6c92d1cd9938d6e

            SHA256

            b987e4d8b568b8728c08b8ea69964c1abf7ace9e5b142e3cd0d24a3b30e042cb

            SHA512

            4d63041800d60ebb6833136089363d728dc66df8fa82c832cc9e37600151379530a93975174fee822029edb8a3bc4f087cb9b34dd167e74352f5f1d2a6ac30bb

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            63008e8ffc64a2ed7fb2aa1678c6f7a1

            SHA1

            a750a1914400f382291d3e6e5862fe8c3446eae2

            SHA256

            063805345cf1ab4ee5510f177fbc4c3bb0735dd91f548a197cb2a850605824bc

            SHA512

            ac483bfeae6187c54c63c5469f1a918ee17092848ccc361a2b1a80322b340d64c36ac1fd66a506453d5334aa133fa274fc7c209dc790ec4e2876cc4b123b7c1b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            63008e8ffc64a2ed7fb2aa1678c6f7a1

            SHA1

            a750a1914400f382291d3e6e5862fe8c3446eae2

            SHA256

            063805345cf1ab4ee5510f177fbc4c3bb0735dd91f548a197cb2a850605824bc

            SHA512

            ac483bfeae6187c54c63c5469f1a918ee17092848ccc361a2b1a80322b340d64c36ac1fd66a506453d5334aa133fa274fc7c209dc790ec4e2876cc4b123b7c1b

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            2dfa9d8a9d3cca90c9d1413544830377

            SHA1

            2340de566e7bfbdb53aafb44372f08297ab634a7

            SHA256

            1d4d5291baccb645fb9fbb12e332e3bbe8712ed643c2b8dce74c80dfac630858

            SHA512

            64e9ce2f37aca21bf3c6ad6a107c816c87126fe336801a733171950d04b144be4a37469ba1cab30ef742417c5d84b1b0c6ceac5f6c2c5120462d6f12df1946a3

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4f46fe1bbcefd0e2294c3782d6ddd3c4

            SHA1

            bce82dcaa7cdfd99113c9a65733c7c190ce28753

            SHA256

            536787630caeb1ab2002b8875382ea669045ee4c0b4f061c4444f87fd36de695

            SHA512

            afacbcd308126dc8d2504c59595ff3ce6ab1b619d9f245ec56084bba0b874f4cbdd6972a4aef2e8c95266a62e2ed0fc799519fa0ac9091a9bb6367ef1a2e60f2

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            177ec36309766653b2df55657aba40a6

            SHA1

            69762605a6440e5a845f701a31b9c0fd365fc5ce

            SHA256

            00d99a6fe180883f5ef7bc73a302258cebfc40b78792947e3d59edce4a222c55

            SHA512

            d184cdb48b9c16d96bf70a35284dfd6ce7ff82800af1b7357d2abac75bb158ac75060fd1d4c129fc8ae5bbdcf3a9c9b5256e0c9f4c88d7a33ed24c66b30e5967

          • memory/108-59-0x0000000000000000-mapping.dmp

          • memory/268-64-0x0000000000000000-mapping.dmp

          • memory/628-71-0x0000000000000000-mapping.dmp

          • memory/684-82-0x0000000000000000-mapping.dmp

          • memory/776-81-0x0000000000000000-mapping.dmp

          • memory/916-88-0x0000000000000000-mapping.dmp

          • memory/1176-54-0x00000000762D1000-0x00000000762D3000-memory.dmp

            Filesize

            8KB

          • memory/1176-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1176-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1176-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1704-58-0x0000000000000000-mapping.dmp

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

          • memory/1752-62-0x0000000000000000-mapping.dmp

          • memory/1760-77-0x0000000000000000-mapping.dmp

          • memory/1812-87-0x0000000000000000-mapping.dmp