Analysis

  • max time kernel
    44s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:53

General

  • Target

    ac676b179fe41efb90b0338a7e8758a1d98f3b32cb360bd21c6b061952dfb297.exe

  • Size

    445KB

  • MD5

    1780c70289d952d8742817de741c6fc7

  • SHA1

    057ac336dd50040cca8dc50259169ae3dee59bac

  • SHA256

    ac676b179fe41efb90b0338a7e8758a1d98f3b32cb360bd21c6b061952dfb297

  • SHA512

    98f8f7312341e2d896a5ca6819b39f64c07d0d44378d99a5f64d28e2238e8cfeceecef55ba2e037232ef329cc0f95363eb6cea2e81bbc8536b50f34fca7da6ba

  • SSDEEP

    6144:XzfV3eThzLZdlXcvaEKRK39EG8xRVK5hldCo6LL29pnra0P7TKzcDVTy0iFeQWQn:Z3exhX0wGWD6TOaXr/PSo1PAW+3ia

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\ac676b179fe41efb90b0338a7e8758a1d98f3b32cb360bd21c6b061952dfb297.exe
    "C:\Users\Admin\AppData\Local\Temp\ac676b179fe41efb90b0338a7e8758a1d98f3b32cb360bd21c6b061952dfb297.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:1604
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1820
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:572
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1284
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1944
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:680
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:304
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1644
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1456
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1964
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2044
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:832
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1228
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1092

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            365d88b46a6f0ca2d0377026c8b8b07e

            SHA1

            afd4574a0f01fc9a141d458061a78c84e11b5aa0

            SHA256

            eae8e2f123b58ae878e6ae5f9c2d2202ab93e1425e2cb5c16c197c43a4fb2a3b

            SHA512

            e49ae76966bad65f92579dfe1e1a6ee2e92066777f955941968de4fe1b32b45b7dc984fea76a78de5e03f926869be27feecf8b6c62f14b8853523503758e06cd

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6a9e21c4acaae386f549c3ff14e2da8d

            SHA1

            c4e3f76406d76abb26ed048e935063e9cab9059b

            SHA256

            b6e48db89338e4f69b50cc1009bcfc861e39e609525f6bdc5d07d8dbe12e1776

            SHA512

            2c0bac2647e1ae0950eb150c7d30c330b2308c188ae182a4f9b54636a64e8969a9eabeed03b4dbf3d3f21bd2877c4a904a3177a8ee7b3885a981ddbf7a6f7160

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a64c6c5730cdc8fd698bdbe9570cf689

            SHA1

            7c9d22120927ddc05ffa4583bb7de94d666afcc8

            SHA256

            0f562c26bdce5d07ee184315c7751c64b826a771f29f6c68cdd9ad5fe2b8c138

            SHA512

            14f80e8195c5ab74885171bd7436854b44958d077d7f22657b27464fce6dc24c65df73ad82353574616207ef34bd77d42c9087fff7d239df43320a75d74287ca

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            8c159e089e5fa898aa6fef7597d566b9

            SHA1

            ac679b001baea07ea88fe6fe74112898e1fbcfce

            SHA256

            a11f30a8e699a9f2c09b3174520623aa21ae142d3711c2d2b791ed0c6d8642b3

            SHA512

            7f3420176c340950395c1851023979aa8413095eedee3950723293a5ee62652c367a4356d1189e96a36129d7c3a092b531847b6bc0732854e9170c645b244365

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            8c159e089e5fa898aa6fef7597d566b9

            SHA1

            ac679b001baea07ea88fe6fe74112898e1fbcfce

            SHA256

            a11f30a8e699a9f2c09b3174520623aa21ae142d3711c2d2b791ed0c6d8642b3

            SHA512

            7f3420176c340950395c1851023979aa8413095eedee3950723293a5ee62652c367a4356d1189e96a36129d7c3a092b531847b6bc0732854e9170c645b244365

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7f6219e4e0e6d6a46d8058c5197ee6ca

            SHA1

            c48cccbc192007f6802329919532885350c26ff9

            SHA256

            24a05ffe58953d860aec271ecd8d6f3a8ca2503674a50faa8308252ab9b0c07a

            SHA512

            2b73cb980957e130e431c00f590e6b80ae745f3c79d6230fca85d76406f72bfbb996895ef8910e9afc5356c942469748323fd98c53a53db4af3e5a5c2196fd36

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7f6219e4e0e6d6a46d8058c5197ee6ca

            SHA1

            c48cccbc192007f6802329919532885350c26ff9

            SHA256

            24a05ffe58953d860aec271ecd8d6f3a8ca2503674a50faa8308252ab9b0c07a

            SHA512

            2b73cb980957e130e431c00f590e6b80ae745f3c79d6230fca85d76406f72bfbb996895ef8910e9afc5356c942469748323fd98c53a53db4af3e5a5c2196fd36

          • \Users\Admin\AppData\Local\Temp\nsy966.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy966.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy966.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy966.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy966.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            365d88b46a6f0ca2d0377026c8b8b07e

            SHA1

            afd4574a0f01fc9a141d458061a78c84e11b5aa0

            SHA256

            eae8e2f123b58ae878e6ae5f9c2d2202ab93e1425e2cb5c16c197c43a4fb2a3b

            SHA512

            e49ae76966bad65f92579dfe1e1a6ee2e92066777f955941968de4fe1b32b45b7dc984fea76a78de5e03f926869be27feecf8b6c62f14b8853523503758e06cd

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            365d88b46a6f0ca2d0377026c8b8b07e

            SHA1

            afd4574a0f01fc9a141d458061a78c84e11b5aa0

            SHA256

            eae8e2f123b58ae878e6ae5f9c2d2202ab93e1425e2cb5c16c197c43a4fb2a3b

            SHA512

            e49ae76966bad65f92579dfe1e1a6ee2e92066777f955941968de4fe1b32b45b7dc984fea76a78de5e03f926869be27feecf8b6c62f14b8853523503758e06cd

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            365d88b46a6f0ca2d0377026c8b8b07e

            SHA1

            afd4574a0f01fc9a141d458061a78c84e11b5aa0

            SHA256

            eae8e2f123b58ae878e6ae5f9c2d2202ab93e1425e2cb5c16c197c43a4fb2a3b

            SHA512

            e49ae76966bad65f92579dfe1e1a6ee2e92066777f955941968de4fe1b32b45b7dc984fea76a78de5e03f926869be27feecf8b6c62f14b8853523503758e06cd

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6a9e21c4acaae386f549c3ff14e2da8d

            SHA1

            c4e3f76406d76abb26ed048e935063e9cab9059b

            SHA256

            b6e48db89338e4f69b50cc1009bcfc861e39e609525f6bdc5d07d8dbe12e1776

            SHA512

            2c0bac2647e1ae0950eb150c7d30c330b2308c188ae182a4f9b54636a64e8969a9eabeed03b4dbf3d3f21bd2877c4a904a3177a8ee7b3885a981ddbf7a6f7160

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            6a9e21c4acaae386f549c3ff14e2da8d

            SHA1

            c4e3f76406d76abb26ed048e935063e9cab9059b

            SHA256

            b6e48db89338e4f69b50cc1009bcfc861e39e609525f6bdc5d07d8dbe12e1776

            SHA512

            2c0bac2647e1ae0950eb150c7d30c330b2308c188ae182a4f9b54636a64e8969a9eabeed03b4dbf3d3f21bd2877c4a904a3177a8ee7b3885a981ddbf7a6f7160

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a64c6c5730cdc8fd698bdbe9570cf689

            SHA1

            7c9d22120927ddc05ffa4583bb7de94d666afcc8

            SHA256

            0f562c26bdce5d07ee184315c7751c64b826a771f29f6c68cdd9ad5fe2b8c138

            SHA512

            14f80e8195c5ab74885171bd7436854b44958d077d7f22657b27464fce6dc24c65df73ad82353574616207ef34bd77d42c9087fff7d239df43320a75d74287ca

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            8c159e089e5fa898aa6fef7597d566b9

            SHA1

            ac679b001baea07ea88fe6fe74112898e1fbcfce

            SHA256

            a11f30a8e699a9f2c09b3174520623aa21ae142d3711c2d2b791ed0c6d8642b3

            SHA512

            7f3420176c340950395c1851023979aa8413095eedee3950723293a5ee62652c367a4356d1189e96a36129d7c3a092b531847b6bc0732854e9170c645b244365

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            7f6219e4e0e6d6a46d8058c5197ee6ca

            SHA1

            c48cccbc192007f6802329919532885350c26ff9

            SHA256

            24a05ffe58953d860aec271ecd8d6f3a8ca2503674a50faa8308252ab9b0c07a

            SHA512

            2b73cb980957e130e431c00f590e6b80ae745f3c79d6230fca85d76406f72bfbb996895ef8910e9afc5356c942469748323fd98c53a53db4af3e5a5c2196fd36

          • memory/304-69-0x0000000000000000-mapping.dmp

          • memory/572-58-0x0000000000000000-mapping.dmp

          • memory/680-63-0x0000000000000000-mapping.dmp

          • memory/832-86-0x0000000000000000-mapping.dmp

          • memory/1284-60-0x0000000000000000-mapping.dmp

          • memory/1456-79-0x0000000000000000-mapping.dmp

          • memory/1604-54-0x0000000076461000-0x0000000076463000-memory.dmp

            Filesize

            8KB

          • memory/1644-75-0x0000000000000000-mapping.dmp

          • memory/1820-57-0x0000000000000000-mapping.dmp

          • memory/1944-61-0x0000000000000000-mapping.dmp

          • memory/1964-80-0x0000000000000000-mapping.dmp

          • memory/2044-85-0x0000000000000000-mapping.dmp