Analysis

  • max time kernel
    43s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:31

General

  • Target

    20c0cfcd0ad038224153471997783915b3611b12d778edfea2ed785c918a1996.exe

  • Size

    601KB

  • MD5

    8e236dfeb73373970011c28f8718794c

  • SHA1

    3f0931c0240169d47893cbb68a2197921b928176

  • SHA256

    20c0cfcd0ad038224153471997783915b3611b12d778edfea2ed785c918a1996

  • SHA512

    0928549264eb2a428c32076c8bc8a941c3c0588188b8c3de80ac0d8f295c37a24df278f4466cbd8bc23d59b65e734e1430b8439a91c6e7affa79c9c1b3d4cad7

  • SSDEEP

    12288:YIny5DYTtV1AkFBOLx2wDy5qQw4YhPg0t4+XpWIbYO:2UTtrFBc7aqQw4YhPg0tD5RbYO

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\20c0cfcd0ad038224153471997783915b3611b12d778edfea2ed785c918a1996.exe
    "C:\Users\Admin\AppData\Local\Temp\20c0cfcd0ad038224153471997783915b3611b12d778edfea2ed785c918a1996.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:1736
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1464
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:820
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:624
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1136
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1988
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1000
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:996
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1796
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:928
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:984
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:368
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1664
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:900

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cf489298f21c25c959fbabb94a8b7a93

            SHA1

            4422a51c253747360d04da2379e82d4fed10b1de

            SHA256

            657d668230b1fff7268c14ea35abae70cf61e3b3f2d8baa65372953395c9e006

            SHA512

            11e84daf868df71555729da336da64680d1f783efedb0ed1823b2c03420068ab189f5fb7e22024ba058151638efc57e6a6e11dfd6ff3037ad7694128bbab6761

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6863599aa49ef4a4a560d1eaa21158c7

            SHA1

            baf385ad64e26985f330e05c0d0bfff948954444

            SHA256

            3c224322086fe2c981731911a7409ed680fd45c2a944b4ed7cd10a0b73457f86

            SHA512

            53becb5fe519b5bccc9f306733c417c768bad272af17db7afaed2eca9851d36687ab6acb8ddc79c460d9dacbf13fae069e7d82dd0b8f57a6f0580e0d7219a2ba

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0a36de91263f8994f4aacae2dabcda34

            SHA1

            7957871b7a452d42f57b62f3845aec114b0734e8

            SHA256

            3987d373c92c1b5de43da67065fde0fb9e277256abf45eb39598141444cb4f90

            SHA512

            1c29edd680c9f3740e9ebfa49cf3288919ecc5ac04cfc7ada5b7c08362ccaa480cd294059a962d9ee5b4ae2d9f2dafd23a065fb0705bedc73cdadd9081d44302

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e15ff6578369120c51a50f107e5c271c

            SHA1

            0c0a47e2ed83f9d404b040215c4018b2c908dfc9

            SHA256

            e4854772c660560d15425f8ec1b28f924f6d50936956ac6b82a8ce47a42fb782

            SHA512

            6e51db15a468f41cf7cf99c76e24332d71d4df04f441963c936f1263738ffb539174e49ac64fc2069839a93bfe48392070fb9c1179ba1d176fd3e9a4c8ef99fc

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e15ff6578369120c51a50f107e5c271c

            SHA1

            0c0a47e2ed83f9d404b040215c4018b2c908dfc9

            SHA256

            e4854772c660560d15425f8ec1b28f924f6d50936956ac6b82a8ce47a42fb782

            SHA512

            6e51db15a468f41cf7cf99c76e24332d71d4df04f441963c936f1263738ffb539174e49ac64fc2069839a93bfe48392070fb9c1179ba1d176fd3e9a4c8ef99fc

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            62e57457a8f1acc8b55a18fb19a50f63

            SHA1

            29ed609d6248d56dfa81371667cf31b8ff61809f

            SHA256

            9ec29b5d7c9c2e357fb0a20ec0e264c7529429a46a0a4f3ad06f97e3cc38cdec

            SHA512

            874401d06edea575905f3b289d3fd5e0a1b545854899bec0a560a3fd88000f1a92a08ead1bbfdc81104375c5a7fbc827a4700c568f52d0b7199ef1e9b1bfa416

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            62e57457a8f1acc8b55a18fb19a50f63

            SHA1

            29ed609d6248d56dfa81371667cf31b8ff61809f

            SHA256

            9ec29b5d7c9c2e357fb0a20ec0e264c7529429a46a0a4f3ad06f97e3cc38cdec

            SHA512

            874401d06edea575905f3b289d3fd5e0a1b545854899bec0a560a3fd88000f1a92a08ead1bbfdc81104375c5a7fbc827a4700c568f52d0b7199ef1e9b1bfa416

          • \Users\Admin\AppData\Local\Temp\nsdFDF1.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsdFDF1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdFDF1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdFDF1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdFDF1.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cf489298f21c25c959fbabb94a8b7a93

            SHA1

            4422a51c253747360d04da2379e82d4fed10b1de

            SHA256

            657d668230b1fff7268c14ea35abae70cf61e3b3f2d8baa65372953395c9e006

            SHA512

            11e84daf868df71555729da336da64680d1f783efedb0ed1823b2c03420068ab189f5fb7e22024ba058151638efc57e6a6e11dfd6ff3037ad7694128bbab6761

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cf489298f21c25c959fbabb94a8b7a93

            SHA1

            4422a51c253747360d04da2379e82d4fed10b1de

            SHA256

            657d668230b1fff7268c14ea35abae70cf61e3b3f2d8baa65372953395c9e006

            SHA512

            11e84daf868df71555729da336da64680d1f783efedb0ed1823b2c03420068ab189f5fb7e22024ba058151638efc57e6a6e11dfd6ff3037ad7694128bbab6761

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cf489298f21c25c959fbabb94a8b7a93

            SHA1

            4422a51c253747360d04da2379e82d4fed10b1de

            SHA256

            657d668230b1fff7268c14ea35abae70cf61e3b3f2d8baa65372953395c9e006

            SHA512

            11e84daf868df71555729da336da64680d1f783efedb0ed1823b2c03420068ab189f5fb7e22024ba058151638efc57e6a6e11dfd6ff3037ad7694128bbab6761

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6863599aa49ef4a4a560d1eaa21158c7

            SHA1

            baf385ad64e26985f330e05c0d0bfff948954444

            SHA256

            3c224322086fe2c981731911a7409ed680fd45c2a944b4ed7cd10a0b73457f86

            SHA512

            53becb5fe519b5bccc9f306733c417c768bad272af17db7afaed2eca9851d36687ab6acb8ddc79c460d9dacbf13fae069e7d82dd0b8f57a6f0580e0d7219a2ba

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6863599aa49ef4a4a560d1eaa21158c7

            SHA1

            baf385ad64e26985f330e05c0d0bfff948954444

            SHA256

            3c224322086fe2c981731911a7409ed680fd45c2a944b4ed7cd10a0b73457f86

            SHA512

            53becb5fe519b5bccc9f306733c417c768bad272af17db7afaed2eca9851d36687ab6acb8ddc79c460d9dacbf13fae069e7d82dd0b8f57a6f0580e0d7219a2ba

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0a36de91263f8994f4aacae2dabcda34

            SHA1

            7957871b7a452d42f57b62f3845aec114b0734e8

            SHA256

            3987d373c92c1b5de43da67065fde0fb9e277256abf45eb39598141444cb4f90

            SHA512

            1c29edd680c9f3740e9ebfa49cf3288919ecc5ac04cfc7ada5b7c08362ccaa480cd294059a962d9ee5b4ae2d9f2dafd23a065fb0705bedc73cdadd9081d44302

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e15ff6578369120c51a50f107e5c271c

            SHA1

            0c0a47e2ed83f9d404b040215c4018b2c908dfc9

            SHA256

            e4854772c660560d15425f8ec1b28f924f6d50936956ac6b82a8ce47a42fb782

            SHA512

            6e51db15a468f41cf7cf99c76e24332d71d4df04f441963c936f1263738ffb539174e49ac64fc2069839a93bfe48392070fb9c1179ba1d176fd3e9a4c8ef99fc

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            62e57457a8f1acc8b55a18fb19a50f63

            SHA1

            29ed609d6248d56dfa81371667cf31b8ff61809f

            SHA256

            9ec29b5d7c9c2e357fb0a20ec0e264c7529429a46a0a4f3ad06f97e3cc38cdec

            SHA512

            874401d06edea575905f3b289d3fd5e0a1b545854899bec0a560a3fd88000f1a92a08ead1bbfdc81104375c5a7fbc827a4700c568f52d0b7199ef1e9b1bfa416

          • memory/368-88-0x0000000000000000-mapping.dmp

          • memory/624-61-0x0000000000000000-mapping.dmp

          • memory/820-58-0x0000000000000000-mapping.dmp

          • memory/928-82-0x0000000000000000-mapping.dmp

          • memory/984-87-0x0000000000000000-mapping.dmp

          • memory/996-76-0x0000000000000000-mapping.dmp

          • memory/1000-70-0x0000000000000000-mapping.dmp

          • memory/1136-62-0x0000000000000000-mapping.dmp

          • memory/1464-57-0x0000000000000000-mapping.dmp

          • memory/1736-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1736-54-0x0000000075DA1000-0x0000000075DA3000-memory.dmp

            Filesize

            8KB

          • memory/1736-79-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1736-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1796-81-0x0000000000000000-mapping.dmp

          • memory/1988-64-0x0000000000000000-mapping.dmp