Analysis

  • max time kernel
    58s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:27

General

  • Target

    455de830760c2677ac9f905c3bcee4689c33ce62c8e66b763a627f5be4e0323b.exe

  • Size

    601KB

  • MD5

    1ed03ac3b6de803906bb2957272e379e

  • SHA1

    644af13140bd0e7a1a548cc356d4b2910da4cb49

  • SHA256

    455de830760c2677ac9f905c3bcee4689c33ce62c8e66b763a627f5be4e0323b

  • SHA512

    c2d20dec97d1b0e2fcd47461d5b439debf0598ce64adc9b090cce355c83ecd1b068032d54dea747e9fe5de7205b09490c3defa74a38d1bc2d546ed525ff3cd76

  • SSDEEP

    12288:eIny5DYTtHzEN0WZr8YUhJQ6BF6Adpoo8bOp9sOj/A7E3ECu65lvv:AUTtHAN0AgY4vdyo8bO+Eth

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\455de830760c2677ac9f905c3bcee4689c33ce62c8e66b763a627f5be4e0323b.exe
    "C:\Users\Admin\AppData\Local\Temp\455de830760c2677ac9f905c3bcee4689c33ce62c8e66b763a627f5be4e0323b.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:1184
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1884
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:468
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1644
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:668
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:556
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1792
        • 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:956
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1096
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1408
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1980
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1940
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:976

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            81b88cb824ef939336a0ba29479f73f2

            SHA1

            d247cc8143e3e30c88782bfc1fb4c1d3c283d6d3

            SHA256

            44f17cee8ac2c39eb51f639b9c3e97ab350d5bdb11266a4cfe901a5b855f5359

            SHA512

            0830d2a87113bd18885bfd8e40ba1542f84a41a8dbc1682fd53a44b751684ea3f7678cdb0130046a8492dcdaf73fb67a329f82a8f51be10f5bdc5ba6a623135d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4a40df5358d6eaac19eeb596159576eb

            SHA1

            766b45e801e1db6f09058b53ab52aa2b3e88f17b

            SHA256

            798fe3595ec6f9d285e5866ee101cf2f19f067ec09398628c2fe125c416205de

            SHA512

            99b406773109af3267e5ecc154dd9d42df2ae55897d321134f83277ff5c4b5755467a36be479049e85167a31ed96737a3e1f8ffc6e86f64321f5ed1ae6dcd9dc

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4d87edb0db299cbf82a7851771de377f

            SHA1

            ade2dacc02b7604320a1f024e648439a4359f024

            SHA256

            8b42f37d0ec8914b571e50760221f46690d0fed2a8ec231a2ab21de9ff8f6a08

            SHA512

            804403a87d8d40e7e12df5273536fe2ae433f28cac5e31661674faf4044cb89edf1ae7e78c0b1e3a1780ffc11399bc2ec8b9e77bf6df01d821e94fb40a50b62e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            cc4af4b11ee46d13de6942ca997256c4

            SHA1

            36713476fcea78d80c09accf9d4e5795db19364f

            SHA256

            1613f844337beee80e34eecb8ea66887b8005bafa8c9f1d3bb644e6598a3a5b7

            SHA512

            cc499c8235ca04e8701e058cddbb60002974bc80416f99a6200c81b76f28b3721dcbba831f5b643901d77f202fc05b1c3887da81651d01f5e64f1f4638181951

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            cc4af4b11ee46d13de6942ca997256c4

            SHA1

            36713476fcea78d80c09accf9d4e5795db19364f

            SHA256

            1613f844337beee80e34eecb8ea66887b8005bafa8c9f1d3bb644e6598a3a5b7

            SHA512

            cc499c8235ca04e8701e058cddbb60002974bc80416f99a6200c81b76f28b3721dcbba831f5b643901d77f202fc05b1c3887da81651d01f5e64f1f4638181951

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a13d45762f84c8adb828a1212c9278d9

            SHA1

            8fdf62408f7ea6a431bca58126d164b166ed5e8e

            SHA256

            0fca897081621d90246bd92d14d7ce3a8abbfd4198591370f91d544e3b9e7222

            SHA512

            8cae47e134559c1f3b6c9e2d71ecb56a8485b300c531a83fdc99ed9d3c119fe4ff9a222a344e568c9d6c7dfec3e4f58d461018d7dc582935c1c389fee12b43de

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a13d45762f84c8adb828a1212c9278d9

            SHA1

            8fdf62408f7ea6a431bca58126d164b166ed5e8e

            SHA256

            0fca897081621d90246bd92d14d7ce3a8abbfd4198591370f91d544e3b9e7222

            SHA512

            8cae47e134559c1f3b6c9e2d71ecb56a8485b300c531a83fdc99ed9d3c119fe4ff9a222a344e568c9d6c7dfec3e4f58d461018d7dc582935c1c389fee12b43de

          • \Users\Admin\AppData\Local\Temp\nsj8385.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj8385.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj8385.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj8385.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj8385.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            81b88cb824ef939336a0ba29479f73f2

            SHA1

            d247cc8143e3e30c88782bfc1fb4c1d3c283d6d3

            SHA256

            44f17cee8ac2c39eb51f639b9c3e97ab350d5bdb11266a4cfe901a5b855f5359

            SHA512

            0830d2a87113bd18885bfd8e40ba1542f84a41a8dbc1682fd53a44b751684ea3f7678cdb0130046a8492dcdaf73fb67a329f82a8f51be10f5bdc5ba6a623135d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            81b88cb824ef939336a0ba29479f73f2

            SHA1

            d247cc8143e3e30c88782bfc1fb4c1d3c283d6d3

            SHA256

            44f17cee8ac2c39eb51f639b9c3e97ab350d5bdb11266a4cfe901a5b855f5359

            SHA512

            0830d2a87113bd18885bfd8e40ba1542f84a41a8dbc1682fd53a44b751684ea3f7678cdb0130046a8492dcdaf73fb67a329f82a8f51be10f5bdc5ba6a623135d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            81b88cb824ef939336a0ba29479f73f2

            SHA1

            d247cc8143e3e30c88782bfc1fb4c1d3c283d6d3

            SHA256

            44f17cee8ac2c39eb51f639b9c3e97ab350d5bdb11266a4cfe901a5b855f5359

            SHA512

            0830d2a87113bd18885bfd8e40ba1542f84a41a8dbc1682fd53a44b751684ea3f7678cdb0130046a8492dcdaf73fb67a329f82a8f51be10f5bdc5ba6a623135d

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4a40df5358d6eaac19eeb596159576eb

            SHA1

            766b45e801e1db6f09058b53ab52aa2b3e88f17b

            SHA256

            798fe3595ec6f9d285e5866ee101cf2f19f067ec09398628c2fe125c416205de

            SHA512

            99b406773109af3267e5ecc154dd9d42df2ae55897d321134f83277ff5c4b5755467a36be479049e85167a31ed96737a3e1f8ffc6e86f64321f5ed1ae6dcd9dc

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4a40df5358d6eaac19eeb596159576eb

            SHA1

            766b45e801e1db6f09058b53ab52aa2b3e88f17b

            SHA256

            798fe3595ec6f9d285e5866ee101cf2f19f067ec09398628c2fe125c416205de

            SHA512

            99b406773109af3267e5ecc154dd9d42df2ae55897d321134f83277ff5c4b5755467a36be479049e85167a31ed96737a3e1f8ffc6e86f64321f5ed1ae6dcd9dc

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4d87edb0db299cbf82a7851771de377f

            SHA1

            ade2dacc02b7604320a1f024e648439a4359f024

            SHA256

            8b42f37d0ec8914b571e50760221f46690d0fed2a8ec231a2ab21de9ff8f6a08

            SHA512

            804403a87d8d40e7e12df5273536fe2ae433f28cac5e31661674faf4044cb89edf1ae7e78c0b1e3a1780ffc11399bc2ec8b9e77bf6df01d821e94fb40a50b62e

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            cc4af4b11ee46d13de6942ca997256c4

            SHA1

            36713476fcea78d80c09accf9d4e5795db19364f

            SHA256

            1613f844337beee80e34eecb8ea66887b8005bafa8c9f1d3bb644e6598a3a5b7

            SHA512

            cc499c8235ca04e8701e058cddbb60002974bc80416f99a6200c81b76f28b3721dcbba831f5b643901d77f202fc05b1c3887da81651d01f5e64f1f4638181951

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            a13d45762f84c8adb828a1212c9278d9

            SHA1

            8fdf62408f7ea6a431bca58126d164b166ed5e8e

            SHA256

            0fca897081621d90246bd92d14d7ce3a8abbfd4198591370f91d544e3b9e7222

            SHA512

            8cae47e134559c1f3b6c9e2d71ecb56a8485b300c531a83fdc99ed9d3c119fe4ff9a222a344e568c9d6c7dfec3e4f58d461018d7dc582935c1c389fee12b43de

          • memory/468-58-0x0000000000000000-mapping.dmp

          • memory/556-64-0x0000000000000000-mapping.dmp

          • memory/668-62-0x0000000000000000-mapping.dmp

          • memory/956-81-0x0000000000000000-mapping.dmp

          • memory/1096-82-0x0000000000000000-mapping.dmp

          • memory/1184-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1184-54-0x0000000076691000-0x0000000076693000-memory.dmp

            Filesize

            8KB

          • memory/1184-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1184-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1408-87-0x0000000000000000-mapping.dmp

          • memory/1644-61-0x0000000000000000-mapping.dmp

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

          • memory/1792-71-0x0000000000000000-mapping.dmp

          • memory/1884-57-0x0000000000000000-mapping.dmp

          • memory/1980-88-0x0000000000000000-mapping.dmp