Analysis

  • max time kernel
    24s
  • 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, 22:33

General

  • Target

    d8d6ebfcaaf7b5ece3d8c0877f3cee09d06d0f0699646e1514d844d34b6a3fe3.exe

  • Size

    561KB

  • MD5

    4def1eb040687166165d94602747019b

  • SHA1

    942508df7496016035f24b38fed1900ce6cadc9b

  • SHA256

    d8d6ebfcaaf7b5ece3d8c0877f3cee09d06d0f0699646e1514d844d34b6a3fe3

  • SHA512

    e9edf36eca602e97717680fd7d1582d40e705fc8412f9141a11246f79d2de62bacdd71b773740a9eae13b104a56fdeff5776d642c85f09b0cd4c718ee8fc331d

  • SSDEEP

    12288:YPRYzEbf1r5UYW9lqFdzaIR7NAK0/hZxA0dh5qpPaSxu:RzwftiNHqFdz9R5T05Zbdhgp9

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\d8d6ebfcaaf7b5ece3d8c0877f3cee09d06d0f0699646e1514d844d34b6a3fe3.exe
    "C:\Users\Admin\AppData\Local\Temp\d8d6ebfcaaf7b5ece3d8c0877f3cee09d06d0f0699646e1514d844d34b6a3fe3.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:1224
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:948
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1368
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1696
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1640
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1616
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1308
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:864
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1496
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1180
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1076
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1824
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1116
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1384

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                • C:\Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  c699b2cc0535f0b7eb6ea1ecb1c43345

                  SHA1

                  0c0f5153a9ea0e5813d09f3815f1b421651635bc

                  SHA256

                  8042919331b82185f3ffa41166c9f786b40d043101191b452653783853486a21

                  SHA512

                  06c61ffc96916b777fdd3440d705585c00a7fc413c432d978ed558c565fe0c4a4fd87937ebc72b1036c1cea31732ab0137bf1d8047e1cbe24adbc274e0c23bf9

                • C:\Windows\SysWOW64\hfpapi.dll

                  Filesize

                  241KB

                  MD5

                  6f223e08933ecd2a0f2bc2e933167200

                  SHA1

                  8efcc8532ec2636d49b69929719ffe1a0b0ba774

                  SHA256

                  25c876b77a0cc499e71fd483fb4f0c57b131b539d36cb95406de346122eaee74

                  SHA512

                  2bdcc5dd51f9f93c9802460dc73c2bd4a7cd0ba6c9a1041ea24be8d6a56f5bc0e88407f4482901696f03ab0883a1f3ade05a0e960368072adc10c0682203c6d3

                • C:\Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  ab48c87b71d58299faaabb99edabad66

                  SHA1

                  d9304f69748636e282295ffcb18d74ddbffbd461

                  SHA256

                  b33a47ae7a389e6b36f9e4a4cd1009ad1e9c3dbf877465f1584d25c43be3c4f6

                  SHA512

                  5dcf85a70725d0995c2cc5e8b4d72da62c9c325ae328fac8489eb4f87da27ef569d5934c28729e8fa221f1cf0842bc102dccfe6adb28de959cf1064e491033d6

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  133f62e6bb7a7c014e8b184a14c2c2f1

                  SHA1

                  b35ea0883c931072f2ab89c5ea41b89b5ae25a00

                  SHA256

                  f90eae477a7bdc34137b1ca631a238e08f2dd73b140316d6d3af82af98de0294

                  SHA512

                  15997abd7dab6d90ea397bcf853c334b6f8d88cf427b98307ddc5d8b3cf1fcd36762e58ce126377b28b99f4b4ad99b4ceca2589dfe2e55de9d43730361ec96f8

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  133f62e6bb7a7c014e8b184a14c2c2f1

                  SHA1

                  b35ea0883c931072f2ab89c5ea41b89b5ae25a00

                  SHA256

                  f90eae477a7bdc34137b1ca631a238e08f2dd73b140316d6d3af82af98de0294

                  SHA512

                  15997abd7dab6d90ea397bcf853c334b6f8d88cf427b98307ddc5d8b3cf1fcd36762e58ce126377b28b99f4b4ad99b4ceca2589dfe2e55de9d43730361ec96f8

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  9f7d386f5d6046e9d812e637e618ba33

                  SHA1

                  110704d32a8e103c5735c3cbb6509b3f479e6b57

                  SHA256

                  cfe5892a855854d6262b9db6d7f3b7fd120aeb63824f2b35740ab80e6aef9aa7

                  SHA512

                  8d65f7c1630cd459ba466d03609a1351308cbc47783d2383638df1e244e84658880fc43fd072e20eda57d54bc369cebf1dc968fa8d96f8c0444eaa37e6bd6e07

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  9f7d386f5d6046e9d812e637e618ba33

                  SHA1

                  110704d32a8e103c5735c3cbb6509b3f479e6b57

                  SHA256

                  cfe5892a855854d6262b9db6d7f3b7fd120aeb63824f2b35740ab80e6aef9aa7

                  SHA512

                  8d65f7c1630cd459ba466d03609a1351308cbc47783d2383638df1e244e84658880fc43fd072e20eda57d54bc369cebf1dc968fa8d96f8c0444eaa37e6bd6e07

                • \Users\Admin\AppData\Local\Temp\nst44B1.tmp\System.dll

                  Filesize

                  11KB

                  MD5

                  c17103ae9072a06da581dec998343fc1

                  SHA1

                  b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

                  SHA256

                  dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

                  SHA512

                  d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

                • \Users\Admin\AppData\Local\Temp\nst44B1.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nst44B1.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nst44B1.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nst44B1.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  c699b2cc0535f0b7eb6ea1ecb1c43345

                  SHA1

                  0c0f5153a9ea0e5813d09f3815f1b421651635bc

                  SHA256

                  8042919331b82185f3ffa41166c9f786b40d043101191b452653783853486a21

                  SHA512

                  06c61ffc96916b777fdd3440d705585c00a7fc413c432d978ed558c565fe0c4a4fd87937ebc72b1036c1cea31732ab0137bf1d8047e1cbe24adbc274e0c23bf9

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  c699b2cc0535f0b7eb6ea1ecb1c43345

                  SHA1

                  0c0f5153a9ea0e5813d09f3815f1b421651635bc

                  SHA256

                  8042919331b82185f3ffa41166c9f786b40d043101191b452653783853486a21

                  SHA512

                  06c61ffc96916b777fdd3440d705585c00a7fc413c432d978ed558c565fe0c4a4fd87937ebc72b1036c1cea31732ab0137bf1d8047e1cbe24adbc274e0c23bf9

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  c699b2cc0535f0b7eb6ea1ecb1c43345

                  SHA1

                  0c0f5153a9ea0e5813d09f3815f1b421651635bc

                  SHA256

                  8042919331b82185f3ffa41166c9f786b40d043101191b452653783853486a21

                  SHA512

                  06c61ffc96916b777fdd3440d705585c00a7fc413c432d978ed558c565fe0c4a4fd87937ebc72b1036c1cea31732ab0137bf1d8047e1cbe24adbc274e0c23bf9

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  241KB

                  MD5

                  6f223e08933ecd2a0f2bc2e933167200

                  SHA1

                  8efcc8532ec2636d49b69929719ffe1a0b0ba774

                  SHA256

                  25c876b77a0cc499e71fd483fb4f0c57b131b539d36cb95406de346122eaee74

                  SHA512

                  2bdcc5dd51f9f93c9802460dc73c2bd4a7cd0ba6c9a1041ea24be8d6a56f5bc0e88407f4482901696f03ab0883a1f3ade05a0e960368072adc10c0682203c6d3

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  241KB

                  MD5

                  6f223e08933ecd2a0f2bc2e933167200

                  SHA1

                  8efcc8532ec2636d49b69929719ffe1a0b0ba774

                  SHA256

                  25c876b77a0cc499e71fd483fb4f0c57b131b539d36cb95406de346122eaee74

                  SHA512

                  2bdcc5dd51f9f93c9802460dc73c2bd4a7cd0ba6c9a1041ea24be8d6a56f5bc0e88407f4482901696f03ab0883a1f3ade05a0e960368072adc10c0682203c6d3

                • \Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  ab48c87b71d58299faaabb99edabad66

                  SHA1

                  d9304f69748636e282295ffcb18d74ddbffbd461

                  SHA256

                  b33a47ae7a389e6b36f9e4a4cd1009ad1e9c3dbf877465f1584d25c43be3c4f6

                  SHA512

                  5dcf85a70725d0995c2cc5e8b4d72da62c9c325ae328fac8489eb4f87da27ef569d5934c28729e8fa221f1cf0842bc102dccfe6adb28de959cf1064e491033d6

                • \Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  133f62e6bb7a7c014e8b184a14c2c2f1

                  SHA1

                  b35ea0883c931072f2ab89c5ea41b89b5ae25a00

                  SHA256

                  f90eae477a7bdc34137b1ca631a238e08f2dd73b140316d6d3af82af98de0294

                  SHA512

                  15997abd7dab6d90ea397bcf853c334b6f8d88cf427b98307ddc5d8b3cf1fcd36762e58ce126377b28b99f4b4ad99b4ceca2589dfe2e55de9d43730361ec96f8

                • \Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  9f7d386f5d6046e9d812e637e618ba33

                  SHA1

                  110704d32a8e103c5735c3cbb6509b3f479e6b57

                  SHA256

                  cfe5892a855854d6262b9db6d7f3b7fd120aeb63824f2b35740ab80e6aef9aa7

                  SHA512

                  8d65f7c1630cd459ba466d03609a1351308cbc47783d2383638df1e244e84658880fc43fd072e20eda57d54bc369cebf1dc968fa8d96f8c0444eaa37e6bd6e07

                • memory/1224-62-0x0000000000360000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.4MB

                • memory/1224-54-0x0000000076041000-0x0000000076043000-memory.dmp

                  Filesize

                  8KB

                • memory/1224-90-0x0000000000360000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.4MB