Analysis

  • max time kernel
    23s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:28

General

  • Target

    3e1794a83ee7afe37296720c580bce25841733aea4df1f8c46881acbd6c4d235.exe

  • Size

    602KB

  • MD5

    95bba8575951c4d6fcf1a121a97f9150

  • SHA1

    40dfde2b5aef2445077ebe136d485a68f7824d7a

  • SHA256

    3e1794a83ee7afe37296720c580bce25841733aea4df1f8c46881acbd6c4d235

  • SHA512

    e8ff78904decf289470453e2368f62df14369d413132d951d93e90e7259549eb89da51346ac01d2603526dc6a79fe66ac2cfb3bf9188d1a5187c7de517077bcc

  • SSDEEP

    12288:5Iny5DYTuTnyK5FqT4uqOftBY43UeWb2UwZRGlL:1UTuTOV2+UfbrwZRGl

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\3e1794a83ee7afe37296720c580bce25841733aea4df1f8c46881acbd6c4d235.exe
    "C:\Users\Admin\AppData\Local\Temp\3e1794a83ee7afe37296720c580bce25841733aea4df1f8c46881acbd6c4d235.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:668
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:940
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1076
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2016
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1248
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2012
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1044
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1756
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1904
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1524
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1724
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1488
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:432
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1736

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f44891996659355186ce425f74040ce7

            SHA1

            aec94b75b4cca7281d611638ffa1f50c59efd97d

            SHA256

            a573a7e4305342cb86b9eb21e548793ab31cbc27711193c4647b655cfe54e636

            SHA512

            f0488b1a8b1178c53ff0fd5220f9159705741f9779f186ee3170f3a5ea77e0b21320641b5e4df908abb26d1f635af450861943e6dfb693c333cf148fffc49943

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            243KB

            MD5

            df8c1b3365dd4e81251d03995b6634eb

            SHA1

            76a2b2f6cbdcab70ddd86d5c237f274c0f5e8a58

            SHA256

            2cc58711a2a65639a979984518ab8d2abdd6f0f246915fc5c3a36905edb6a376

            SHA512

            1332ae34c1464e06d52c4fed4d8de605f61626adf9e1cd63da4573a619d6c1ca5ded3bae2a2259819af705ddf3cae97d2b0075f92bebbf8f29b5ff0dcf8cb384

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            407cbc1cc3bdb294895fccd40637efc1

            SHA1

            8af7aaa854f31d9806146f684d1ad905b060dc77

            SHA256

            bdc511ff52e45030b14e0ab5c14e5eb6f65877677a6184cbe7667aa5f135bfb1

            SHA512

            8703a75ac0db3c482f1f1ceb21fa4b8dc4f68bd2b2732dda956b6554355313df714b02249ef0806970edf9ec3a0eaa6cd0f056014b62e1fcb5c097a7ab4656ce

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6845092736aedb921b58669647948e3a

            SHA1

            b09238710781c1fee3c352df291a3c6df43b005c

            SHA256

            51ef03991c8461305960a64a2be534da1444cdd99b7cfb50288c11badcac523b

            SHA512

            3f3eaf7bdb55e81663cc59c513bb04db5e36c86ef9d122965a45f3d943b3d3bca615792dd7735239635e912be75cab30623a7e1f0b3bb0c3d564b516b18494c0

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6845092736aedb921b58669647948e3a

            SHA1

            b09238710781c1fee3c352df291a3c6df43b005c

            SHA256

            51ef03991c8461305960a64a2be534da1444cdd99b7cfb50288c11badcac523b

            SHA512

            3f3eaf7bdb55e81663cc59c513bb04db5e36c86ef9d122965a45f3d943b3d3bca615792dd7735239635e912be75cab30623a7e1f0b3bb0c3d564b516b18494c0

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            b40212b51aea768d46f21e54d8a66de1

            SHA1

            daabc4b9b1715b255eb9e087b4085d219ce1c7da

            SHA256

            33b7d9a15e52ea42579c2d3fb4a3ea94a98c3d25ebe483fc0a620000d8bb809a

            SHA512

            9b4093fbe3aed58a6c2ab4cc54fa78da724bd1e58f30259c9438474feec09f9ae64408eb748dcdfe1e095262506dbacd3d9e23e9a7f853e01445e716822cfcf4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            b40212b51aea768d46f21e54d8a66de1

            SHA1

            daabc4b9b1715b255eb9e087b4085d219ce1c7da

            SHA256

            33b7d9a15e52ea42579c2d3fb4a3ea94a98c3d25ebe483fc0a620000d8bb809a

            SHA512

            9b4093fbe3aed58a6c2ab4cc54fa78da724bd1e58f30259c9438474feec09f9ae64408eb748dcdfe1e095262506dbacd3d9e23e9a7f853e01445e716822cfcf4

          • \Users\Admin\AppData\Local\Temp\nsj4B75.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj4B75.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj4B75.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj4B75.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj4B75.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f44891996659355186ce425f74040ce7

            SHA1

            aec94b75b4cca7281d611638ffa1f50c59efd97d

            SHA256

            a573a7e4305342cb86b9eb21e548793ab31cbc27711193c4647b655cfe54e636

            SHA512

            f0488b1a8b1178c53ff0fd5220f9159705741f9779f186ee3170f3a5ea77e0b21320641b5e4df908abb26d1f635af450861943e6dfb693c333cf148fffc49943

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f44891996659355186ce425f74040ce7

            SHA1

            aec94b75b4cca7281d611638ffa1f50c59efd97d

            SHA256

            a573a7e4305342cb86b9eb21e548793ab31cbc27711193c4647b655cfe54e636

            SHA512

            f0488b1a8b1178c53ff0fd5220f9159705741f9779f186ee3170f3a5ea77e0b21320641b5e4df908abb26d1f635af450861943e6dfb693c333cf148fffc49943

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f44891996659355186ce425f74040ce7

            SHA1

            aec94b75b4cca7281d611638ffa1f50c59efd97d

            SHA256

            a573a7e4305342cb86b9eb21e548793ab31cbc27711193c4647b655cfe54e636

            SHA512

            f0488b1a8b1178c53ff0fd5220f9159705741f9779f186ee3170f3a5ea77e0b21320641b5e4df908abb26d1f635af450861943e6dfb693c333cf148fffc49943

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            243KB

            MD5

            df8c1b3365dd4e81251d03995b6634eb

            SHA1

            76a2b2f6cbdcab70ddd86d5c237f274c0f5e8a58

            SHA256

            2cc58711a2a65639a979984518ab8d2abdd6f0f246915fc5c3a36905edb6a376

            SHA512

            1332ae34c1464e06d52c4fed4d8de605f61626adf9e1cd63da4573a619d6c1ca5ded3bae2a2259819af705ddf3cae97d2b0075f92bebbf8f29b5ff0dcf8cb384

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            243KB

            MD5

            df8c1b3365dd4e81251d03995b6634eb

            SHA1

            76a2b2f6cbdcab70ddd86d5c237f274c0f5e8a58

            SHA256

            2cc58711a2a65639a979984518ab8d2abdd6f0f246915fc5c3a36905edb6a376

            SHA512

            1332ae34c1464e06d52c4fed4d8de605f61626adf9e1cd63da4573a619d6c1ca5ded3bae2a2259819af705ddf3cae97d2b0075f92bebbf8f29b5ff0dcf8cb384

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            407cbc1cc3bdb294895fccd40637efc1

            SHA1

            8af7aaa854f31d9806146f684d1ad905b060dc77

            SHA256

            bdc511ff52e45030b14e0ab5c14e5eb6f65877677a6184cbe7667aa5f135bfb1

            SHA512

            8703a75ac0db3c482f1f1ceb21fa4b8dc4f68bd2b2732dda956b6554355313df714b02249ef0806970edf9ec3a0eaa6cd0f056014b62e1fcb5c097a7ab4656ce

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6845092736aedb921b58669647948e3a

            SHA1

            b09238710781c1fee3c352df291a3c6df43b005c

            SHA256

            51ef03991c8461305960a64a2be534da1444cdd99b7cfb50288c11badcac523b

            SHA512

            3f3eaf7bdb55e81663cc59c513bb04db5e36c86ef9d122965a45f3d943b3d3bca615792dd7735239635e912be75cab30623a7e1f0b3bb0c3d564b516b18494c0

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            b40212b51aea768d46f21e54d8a66de1

            SHA1

            daabc4b9b1715b255eb9e087b4085d219ce1c7da

            SHA256

            33b7d9a15e52ea42579c2d3fb4a3ea94a98c3d25ebe483fc0a620000d8bb809a

            SHA512

            9b4093fbe3aed58a6c2ab4cc54fa78da724bd1e58f30259c9438474feec09f9ae64408eb748dcdfe1e095262506dbacd3d9e23e9a7f853e01445e716822cfcf4

          • memory/668-54-0x0000000075981000-0x0000000075983000-memory.dmp

            Filesize

            8KB

          • memory/668-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/668-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/940-57-0x0000000000000000-mapping.dmp

          • memory/1044-70-0x0000000000000000-mapping.dmp

          • memory/1076-58-0x0000000000000000-mapping.dmp

          • memory/1248-62-0x0000000000000000-mapping.dmp

          • memory/1488-87-0x0000000000000000-mapping.dmp

          • memory/1524-81-0x0000000000000000-mapping.dmp

          • memory/1724-86-0x0000000000000000-mapping.dmp

          • memory/1756-76-0x0000000000000000-mapping.dmp

          • memory/1904-80-0x0000000000000000-mapping.dmp

          • memory/2012-64-0x0000000000000000-mapping.dmp

          • memory/2016-61-0x0000000000000000-mapping.dmp