Analysis

  • max time kernel
    90s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:12

General

  • Target

    c9d9e2528d6cde7b07359f51c7a6a8d6b1c35de674e17926e3e43b9011718cf2.exe

  • Size

    602KB

  • MD5

    90e8904f5282b2df6853c2013f1f10d4

  • SHA1

    15539d4a38e42ce2391ed1394ef755f1ddd6be5b

  • SHA256

    c9d9e2528d6cde7b07359f51c7a6a8d6b1c35de674e17926e3e43b9011718cf2

  • SHA512

    5484f3840d8067afeda355a04c94ed52b4a06bf28b7af450611eb8a0468e660e30c9183a70e85341b1e89d77dca99c1ab14dff1cef160d1105fb84164b2661c0

  • SSDEEP

    12288:iIny5DYTcIYQ9bynMLY0STlnN+7XPZ0pjKLSW+hYQ0dyZ1:EUTcDQ9bynyS507XSlKPQ6yZ1

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c9d9e2528d6cde7b07359f51c7a6a8d6b1c35de674e17926e3e43b9011718cf2.exe
    "C:\Users\Admin\AppData\Local\Temp\c9d9e2528d6cde7b07359f51c7a6a8d6b1c35de674e17926e3e43b9011718cf2.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:4848
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4860
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2168
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4260
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1804
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:628
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2164
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3808
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:528
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:208
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3800
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4328
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:1932
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:3796

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nskE248.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nskE248.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nskE248.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nskE248.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nskE248.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nskE248.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nskE248.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nskE248.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nskE248.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            110c7f8a2394cba98a296e2844d9c7d1

            SHA1

            05d0a766407a42cead9b677205a8f203cab45458

            SHA256

            e716d313897fd2de13def50ba7c5cb65ac8e825c2c1d575c3185a20fefc395ac

            SHA512

            121cb53cc57d576131dfc9e34bbde29905edac39309086d9e95e88d2a8b756b051398d0eb7a1a639db806e3932df7313c0c9b0299d8bf2285a46cd6c55e4ca9f

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            110c7f8a2394cba98a296e2844d9c7d1

            SHA1

            05d0a766407a42cead9b677205a8f203cab45458

            SHA256

            e716d313897fd2de13def50ba7c5cb65ac8e825c2c1d575c3185a20fefc395ac

            SHA512

            121cb53cc57d576131dfc9e34bbde29905edac39309086d9e95e88d2a8b756b051398d0eb7a1a639db806e3932df7313c0c9b0299d8bf2285a46cd6c55e4ca9f

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            110c7f8a2394cba98a296e2844d9c7d1

            SHA1

            05d0a766407a42cead9b677205a8f203cab45458

            SHA256

            e716d313897fd2de13def50ba7c5cb65ac8e825c2c1d575c3185a20fefc395ac

            SHA512

            121cb53cc57d576131dfc9e34bbde29905edac39309086d9e95e88d2a8b756b051398d0eb7a1a639db806e3932df7313c0c9b0299d8bf2285a46cd6c55e4ca9f

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            110c7f8a2394cba98a296e2844d9c7d1

            SHA1

            05d0a766407a42cead9b677205a8f203cab45458

            SHA256

            e716d313897fd2de13def50ba7c5cb65ac8e825c2c1d575c3185a20fefc395ac

            SHA512

            121cb53cc57d576131dfc9e34bbde29905edac39309086d9e95e88d2a8b756b051398d0eb7a1a639db806e3932df7313c0c9b0299d8bf2285a46cd6c55e4ca9f

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            243KB

            MD5

            ccbbbb2794c4a5f338c1635bafb50853

            SHA1

            275249a3dc68902dbc73cfad742bab0a092e2067

            SHA256

            e94135f6f8afe29b092fda88d715563e79e59c45a5e58c838b3ec501569d93f0

            SHA512

            f64f9edc2c011241abac09b5822349267a300dff4aa6a851c8762bd570f5a10d7e9ca2b911bb30593794c3e69ac01fc775b71678559d16b65b78c249e43b474f

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            243KB

            MD5

            ccbbbb2794c4a5f338c1635bafb50853

            SHA1

            275249a3dc68902dbc73cfad742bab0a092e2067

            SHA256

            e94135f6f8afe29b092fda88d715563e79e59c45a5e58c838b3ec501569d93f0

            SHA512

            f64f9edc2c011241abac09b5822349267a300dff4aa6a851c8762bd570f5a10d7e9ca2b911bb30593794c3e69ac01fc775b71678559d16b65b78c249e43b474f

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            243KB

            MD5

            ccbbbb2794c4a5f338c1635bafb50853

            SHA1

            275249a3dc68902dbc73cfad742bab0a092e2067

            SHA256

            e94135f6f8afe29b092fda88d715563e79e59c45a5e58c838b3ec501569d93f0

            SHA512

            f64f9edc2c011241abac09b5822349267a300dff4aa6a851c8762bd570f5a10d7e9ca2b911bb30593794c3e69ac01fc775b71678559d16b65b78c249e43b474f

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            95162dd68e982a920453e9acdb03dc35

            SHA1

            3aed95a62c7e5adfbab41e0d47e4f3a7b8e35b9a

            SHA256

            b4bad63cbe2f8847cb6e780fcb53f02ea41c1676f7a6b034c8c34c9569da590c

            SHA512

            7f7361e13cf2d1433177c0197aca821af0d6888661665f9fc55549abdf1d334c1ead724da649c6e7ad6eac757d940a29fe7cac899bc5170765fa05c31e2dc561

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            95162dd68e982a920453e9acdb03dc35

            SHA1

            3aed95a62c7e5adfbab41e0d47e4f3a7b8e35b9a

            SHA256

            b4bad63cbe2f8847cb6e780fcb53f02ea41c1676f7a6b034c8c34c9569da590c

            SHA512

            7f7361e13cf2d1433177c0197aca821af0d6888661665f9fc55549abdf1d334c1ead724da649c6e7ad6eac757d940a29fe7cac899bc5170765fa05c31e2dc561

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            87ccb841bc9646200b736a66d115cf81

            SHA1

            1c96378a4bdef704f7ab619b57f32f61f20884a9

            SHA256

            152c91293222e141045f3a750fc2afb8360382a08cbe5ace0985a16a24dcc743

            SHA512

            d1e572ada69af9f3b3addbe3d5fcfeda493cee8eaaaae328b9441ab7e1e77f247b2f0bf8ceb5a7fc5493acf1bcf9f03602533b29dfe0bf3058f2254167ce9ae8

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            87ccb841bc9646200b736a66d115cf81

            SHA1

            1c96378a4bdef704f7ab619b57f32f61f20884a9

            SHA256

            152c91293222e141045f3a750fc2afb8360382a08cbe5ace0985a16a24dcc743

            SHA512

            d1e572ada69af9f3b3addbe3d5fcfeda493cee8eaaaae328b9441ab7e1e77f247b2f0bf8ceb5a7fc5493acf1bcf9f03602533b29dfe0bf3058f2254167ce9ae8

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            87ccb841bc9646200b736a66d115cf81

            SHA1

            1c96378a4bdef704f7ab619b57f32f61f20884a9

            SHA256

            152c91293222e141045f3a750fc2afb8360382a08cbe5ace0985a16a24dcc743

            SHA512

            d1e572ada69af9f3b3addbe3d5fcfeda493cee8eaaaae328b9441ab7e1e77f247b2f0bf8ceb5a7fc5493acf1bcf9f03602533b29dfe0bf3058f2254167ce9ae8

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            4f53cdb5605c4f3fe40c10f97d8e475d

            SHA1

            12bacc9a214ea67bddfcb6ec152e3bcc8db97cb6

            SHA256

            8c95885597154b839c8a4af3405e02e6484545c0d157e002dcf48d78101f1be7

            SHA512

            3da8cf82c4cf18ff4055b9e2076fa5656a12f67662344ed8022af4aaf007645a3d757bb71ef0dd2798f524896c881f8267f99507175f947b8fff0ad39f6959e5

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            4f53cdb5605c4f3fe40c10f97d8e475d

            SHA1

            12bacc9a214ea67bddfcb6ec152e3bcc8db97cb6

            SHA256

            8c95885597154b839c8a4af3405e02e6484545c0d157e002dcf48d78101f1be7

            SHA512

            3da8cf82c4cf18ff4055b9e2076fa5656a12f67662344ed8022af4aaf007645a3d757bb71ef0dd2798f524896c881f8267f99507175f947b8fff0ad39f6959e5

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            4f53cdb5605c4f3fe40c10f97d8e475d

            SHA1

            12bacc9a214ea67bddfcb6ec152e3bcc8db97cb6

            SHA256

            8c95885597154b839c8a4af3405e02e6484545c0d157e002dcf48d78101f1be7

            SHA512

            3da8cf82c4cf18ff4055b9e2076fa5656a12f67662344ed8022af4aaf007645a3d757bb71ef0dd2798f524896c881f8267f99507175f947b8fff0ad39f6959e5

          • memory/208-159-0x0000000000000000-mapping.dmp
          • memory/528-158-0x0000000000000000-mapping.dmp
          • memory/628-142-0x0000000000000000-mapping.dmp
          • memory/1804-141-0x0000000000000000-mapping.dmp
          • memory/2164-147-0x0000000000000000-mapping.dmp
          • memory/2168-137-0x0000000000000000-mapping.dmp
          • memory/3800-165-0x0000000000000000-mapping.dmp
          • memory/3808-153-0x0000000000000000-mapping.dmp
          • memory/4260-140-0x0000000000000000-mapping.dmp
          • memory/4328-166-0x0000000000000000-mapping.dmp
          • memory/4848-132-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/4848-168-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/4860-136-0x0000000000000000-mapping.dmp