Analysis

  • max time kernel
    43s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    21/11/2022, 23:55

General

  • Target

    ad3e4b5d21292e0c074e120ae1d03bd49442455df091e8f719fafc7b6798a575.exe

  • Size

    603KB

  • MD5

    679aabacd31df2964effcff60a957eff

  • SHA1

    87a09ea2f327de66c6b3cdb62d55e310a254d8ae

  • SHA256

    ad3e4b5d21292e0c074e120ae1d03bd49442455df091e8f719fafc7b6798a575

  • SHA512

    85c46ad9c4bb368c860b81e2fb0640b9ea46524b8a66df510d8910d1dcf44873ba06eb222a4d75aa94ed52a75f8bcdfbaa02f7825ca76d9f186cf551e6280893

  • SSDEEP

    12288:FIny5DYTmISP+O1FuFuqS99lEKfo5Pys+dLkCB0:xUTmVbCs9sQAant1

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\ad3e4b5d21292e0c074e120ae1d03bd49442455df091e8f719fafc7b6798a575.exe
    "C:\Users\Admin\AppData\Local\Temp\ad3e4b5d21292e0c074e120ae1d03bd49442455df091e8f719fafc7b6798a575.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:1708
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1584
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:552
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:628
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1932
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1500
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1612
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1476
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1272
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1604
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:876
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1364
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:776
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1056

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • C:\Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  029e42a65264052caf2bbb5b9348ce76

                  SHA1

                  51d6081fa3e8f3e390712372d527aa4b8e94984f

                  SHA256

                  b2505f967e58f3ab10ccab1d545e976ba0ddf18cf0c54b2e76c4c17ba8af3899

                  SHA512

                  2efd72d9220c969b2453852af12f6ea2d162ba40752be165749bc9291b6ca23c7e094b084d7b0db68d9016461c55996dbefe07ab13e047139400551643a837b4

                • C:\Windows\SysWOW64\hfpapi.dll

                  Filesize

                  244KB

                  MD5

                  23666079e88fc1124c13c88b3a874b40

                  SHA1

                  35a6152643284ab2236fa1a6428522826aef10b5

                  SHA256

                  cdce9847ea697b6f83aaf736f5fd647b6cdb7fedd8e5200b627e1dc2edf6b667

                  SHA512

                  86e662c99ad1653df936ca72c59f2d2fc2a0806a1fec06d7bb73088257eb754032669c07a33b71ecfc75d679170ccfd30c09868cb17bcf9ab6994938df85961b

                • C:\Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  12c4a5197ae1e917ec0eb0acd40b52d1

                  SHA1

                  2b0798983a128ee3abb228cde033b73b9a39aa2c

                  SHA256

                  bdeac2a230ab3e59a46bf3a8a63f283fd759fea02bbac063c75bcf97301c9274

                  SHA512

                  a7ae780073c67b9fca315b6b42857f9465f2b8d1811071bc7b43f984671687a50b225f3a79b94b226804f6f69739c6fadaa2c19f476b2740425aea239016cd42

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  96c7da2945fdebbb89442e9c8d9db1b2

                  SHA1

                  132657c33db1c2ec0eeebbe0f5ded807b8fae61a

                  SHA256

                  066b65e47128b37d5c4ca1942fff06878c4593d27519f2d5d7d50f88b5cbf436

                  SHA512

                  290f4bc4444d6d49c4718c6e43ed9814fd06f4107d96bfa5fb6df56cb16e498c52c84499d31ce96d770a18887a250b6a03c63bb86a9c9bb81a9716954645abd4

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  96c7da2945fdebbb89442e9c8d9db1b2

                  SHA1

                  132657c33db1c2ec0eeebbe0f5ded807b8fae61a

                  SHA256

                  066b65e47128b37d5c4ca1942fff06878c4593d27519f2d5d7d50f88b5cbf436

                  SHA512

                  290f4bc4444d6d49c4718c6e43ed9814fd06f4107d96bfa5fb6df56cb16e498c52c84499d31ce96d770a18887a250b6a03c63bb86a9c9bb81a9716954645abd4

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  aea57841c18f12e3634c73cb051289ff

                  SHA1

                  ede1995533708f6d49edb7d2ae409070834d1858

                  SHA256

                  b9a464d946114b42b7484fc1f8428085da3433c6b4499a0c767b5d118629813f

                  SHA512

                  25eea5fdc9f3d22bf42d44a62140ffea11da301b157104e3689df3cdf8bee08d77bff6815180c1b7d5e457f35ff7f5298a6b4650b3d7b27d45480fbf2a4e2fc9

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  aea57841c18f12e3634c73cb051289ff

                  SHA1

                  ede1995533708f6d49edb7d2ae409070834d1858

                  SHA256

                  b9a464d946114b42b7484fc1f8428085da3433c6b4499a0c767b5d118629813f

                  SHA512

                  25eea5fdc9f3d22bf42d44a62140ffea11da301b157104e3689df3cdf8bee08d77bff6815180c1b7d5e457f35ff7f5298a6b4650b3d7b27d45480fbf2a4e2fc9

                • \Users\Admin\AppData\Local\Temp\nsd1A95.tmp\System.dll

                  Filesize

                  11KB

                  MD5

                  c17103ae9072a06da581dec998343fc1

                  SHA1

                  b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

                  SHA256

                  dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

                  SHA512

                  d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

                • \Users\Admin\AppData\Local\Temp\nsd1A95.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nsd1A95.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nsd1A95.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nsd1A95.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  029e42a65264052caf2bbb5b9348ce76

                  SHA1

                  51d6081fa3e8f3e390712372d527aa4b8e94984f

                  SHA256

                  b2505f967e58f3ab10ccab1d545e976ba0ddf18cf0c54b2e76c4c17ba8af3899

                  SHA512

                  2efd72d9220c969b2453852af12f6ea2d162ba40752be165749bc9291b6ca23c7e094b084d7b0db68d9016461c55996dbefe07ab13e047139400551643a837b4

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  029e42a65264052caf2bbb5b9348ce76

                  SHA1

                  51d6081fa3e8f3e390712372d527aa4b8e94984f

                  SHA256

                  b2505f967e58f3ab10ccab1d545e976ba0ddf18cf0c54b2e76c4c17ba8af3899

                  SHA512

                  2efd72d9220c969b2453852af12f6ea2d162ba40752be165749bc9291b6ca23c7e094b084d7b0db68d9016461c55996dbefe07ab13e047139400551643a837b4

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  029e42a65264052caf2bbb5b9348ce76

                  SHA1

                  51d6081fa3e8f3e390712372d527aa4b8e94984f

                  SHA256

                  b2505f967e58f3ab10ccab1d545e976ba0ddf18cf0c54b2e76c4c17ba8af3899

                  SHA512

                  2efd72d9220c969b2453852af12f6ea2d162ba40752be165749bc9291b6ca23c7e094b084d7b0db68d9016461c55996dbefe07ab13e047139400551643a837b4

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  244KB

                  MD5

                  23666079e88fc1124c13c88b3a874b40

                  SHA1

                  35a6152643284ab2236fa1a6428522826aef10b5

                  SHA256

                  cdce9847ea697b6f83aaf736f5fd647b6cdb7fedd8e5200b627e1dc2edf6b667

                  SHA512

                  86e662c99ad1653df936ca72c59f2d2fc2a0806a1fec06d7bb73088257eb754032669c07a33b71ecfc75d679170ccfd30c09868cb17bcf9ab6994938df85961b

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  244KB

                  MD5

                  23666079e88fc1124c13c88b3a874b40

                  SHA1

                  35a6152643284ab2236fa1a6428522826aef10b5

                  SHA256

                  cdce9847ea697b6f83aaf736f5fd647b6cdb7fedd8e5200b627e1dc2edf6b667

                  SHA512

                  86e662c99ad1653df936ca72c59f2d2fc2a0806a1fec06d7bb73088257eb754032669c07a33b71ecfc75d679170ccfd30c09868cb17bcf9ab6994938df85961b

                • \Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  12c4a5197ae1e917ec0eb0acd40b52d1

                  SHA1

                  2b0798983a128ee3abb228cde033b73b9a39aa2c

                  SHA256

                  bdeac2a230ab3e59a46bf3a8a63f283fd759fea02bbac063c75bcf97301c9274

                  SHA512

                  a7ae780073c67b9fca315b6b42857f9465f2b8d1811071bc7b43f984671687a50b225f3a79b94b226804f6f69739c6fadaa2c19f476b2740425aea239016cd42

                • \Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  96c7da2945fdebbb89442e9c8d9db1b2

                  SHA1

                  132657c33db1c2ec0eeebbe0f5ded807b8fae61a

                  SHA256

                  066b65e47128b37d5c4ca1942fff06878c4593d27519f2d5d7d50f88b5cbf436

                  SHA512

                  290f4bc4444d6d49c4718c6e43ed9814fd06f4107d96bfa5fb6df56cb16e498c52c84499d31ce96d770a18887a250b6a03c63bb86a9c9bb81a9716954645abd4

                • \Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  aea57841c18f12e3634c73cb051289ff

                  SHA1

                  ede1995533708f6d49edb7d2ae409070834d1858

                  SHA256

                  b9a464d946114b42b7484fc1f8428085da3433c6b4499a0c767b5d118629813f

                  SHA512

                  25eea5fdc9f3d22bf42d44a62140ffea11da301b157104e3689df3cdf8bee08d77bff6815180c1b7d5e457f35ff7f5298a6b4650b3d7b27d45480fbf2a4e2fc9

                • memory/1708-54-0x0000000075111000-0x0000000075113000-memory.dmp

                  Filesize

                  8KB

                • memory/1708-59-0x0000000000360000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.4MB

                • memory/1708-90-0x0000000000360000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.4MB