Analysis

  • max time kernel
    43s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:36

General

  • Target

    e1f2898cab4430d11e134c74709e54c97db95e95caa726b150832c401f25c3a6.exe

  • Size

    558KB

  • MD5

    0da9972350ccb32de7ce5c7a10517a9d

  • SHA1

    6fee02d715a183509abbbb26e969d99d32be6952

  • SHA256

    e1f2898cab4430d11e134c74709e54c97db95e95caa726b150832c401f25c3a6

  • SHA512

    47b7cb13677699f12cb53f5ea585597c3d68e0069f0a52d011df95b32e907c26df6df610f6b3ef988832188de7499f2577db8328bf6d132590f2382f75ba7a40

  • SSDEEP

    12288:S2hB6DQbfRJu+UsFj9j2t9IN8ywdxUy19akcYd/oz3jStpZh87hRG88:+D0f6Bsp9g0Zwd3TjoD+h2NRb8

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\e1f2898cab4430d11e134c74709e54c97db95e95caa726b150832c401f25c3a6.exe
    "C:\Users\Admin\AppData\Local\Temp\e1f2898cab4430d11e134c74709e54c97db95e95caa726b150832c401f25c3a6.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:1092
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:848
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1388
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:944
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:2040
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1160
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1760
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1576
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1992
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2000
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:824
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1500
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1696
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1228

          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:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0aa00344dd7ce19d753cd4bab7ca6eea

            SHA1

            daf304197b74b68339ee40b6b0647e11992d63b9

            SHA256

            b53ffc539134e945cb0aeeeb9bdd5cd48bb973c69a4f3b43529222b5e8dfff97

            SHA512

            04afba21c414a902412ab791476a6f12b1a720d98baef205b55cc57030279b0cc0685ddd0cbb3632260353e037cc3fdff82c86bebd636753fa4fab570f564b58

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

            241KB

            MD5

            36e9415a2abd19f66104ac996611d184

            SHA1

            ae99f86c33973d0b4cc87f65c56fa296398ca93d

            SHA256

            a6b8069bb36dbc84b37ecd3699a2db103ec22ce5e8700fe6c602d1b8eeeae0fe

            SHA512

            d4fe24bb49967dc8e23ef30930ec2e346513343b4d139a666a79048a74797fbcbbe73b3a7ab1ab22ee0b1e304d491bf80a3cf1fc7d1850f12ea3fa4820a56e2f

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

            108KB

            MD5

            593223208c930c8dc768eb4a6dd56feb

            SHA1

            aed124c3ae90384577663ce5f29304b11128c466

            SHA256

            c958abb34e5b4dde5f709ed90640011b55b75a7383e3b0a73c13a08df4bb9963

            SHA512

            7dc965f915f93f9919a1383bccf3ae438ffff0366f5507523bebd9a273282f11bea2f19eaa5c57f4de7d3621c69fa929140d1e5be768f72e547e8607eaf3efb8

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

            176KB

            MD5

            7908196bed0f90219608545f58ae7bd4

            SHA1

            d18b2004d12d7e48f6af829b40e776cd34657b6b

            SHA256

            77560b23bcafae658b478ea79bba982c35ddda8ec866d79432c9db216db8948d

            SHA512

            f8eefe449ca824526e32555d8bfaea4bd146334b2d2c009950cc6124fc5e7ff953f7a433989a3015035d02e40ae31bb610a2de36b8d2199e8fe297b564efb8cc

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

            176KB

            MD5

            7908196bed0f90219608545f58ae7bd4

            SHA1

            d18b2004d12d7e48f6af829b40e776cd34657b6b

            SHA256

            77560b23bcafae658b478ea79bba982c35ddda8ec866d79432c9db216db8948d

            SHA512

            f8eefe449ca824526e32555d8bfaea4bd146334b2d2c009950cc6124fc5e7ff953f7a433989a3015035d02e40ae31bb610a2de36b8d2199e8fe297b564efb8cc

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

            159KB

            MD5

            c786b631d4c06fabdc4d17b4cd773ba4

            SHA1

            47208c7ea0dd86e6d9b25727ac2a0c705e4a356c

            SHA256

            af71e17bc4c55f1abcb061db80ffbeaa26928948c1996b3fbdaf18488c92e9cf

            SHA512

            af6adf326b4fa9b05d2a307e1a31d608f4025c63dba741ef8fac10c4b486f9b8b0f7e64e6d7458d6f37ddfcf03928d737ef37adf6134e23a90ec8b99f17eec9d

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

            159KB

            MD5

            c786b631d4c06fabdc4d17b4cd773ba4

            SHA1

            47208c7ea0dd86e6d9b25727ac2a0c705e4a356c

            SHA256

            af71e17bc4c55f1abcb061db80ffbeaa26928948c1996b3fbdaf18488c92e9cf

            SHA512

            af6adf326b4fa9b05d2a307e1a31d608f4025c63dba741ef8fac10c4b486f9b8b0f7e64e6d7458d6f37ddfcf03928d737ef37adf6134e23a90ec8b99f17eec9d

          • \Users\Admin\AppData\Local\Temp\nsoDBA.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsoDBA.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoDBA.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoDBA.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoDBA.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0aa00344dd7ce19d753cd4bab7ca6eea

            SHA1

            daf304197b74b68339ee40b6b0647e11992d63b9

            SHA256

            b53ffc539134e945cb0aeeeb9bdd5cd48bb973c69a4f3b43529222b5e8dfff97

            SHA512

            04afba21c414a902412ab791476a6f12b1a720d98baef205b55cc57030279b0cc0685ddd0cbb3632260353e037cc3fdff82c86bebd636753fa4fab570f564b58

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0aa00344dd7ce19d753cd4bab7ca6eea

            SHA1

            daf304197b74b68339ee40b6b0647e11992d63b9

            SHA256

            b53ffc539134e945cb0aeeeb9bdd5cd48bb973c69a4f3b43529222b5e8dfff97

            SHA512

            04afba21c414a902412ab791476a6f12b1a720d98baef205b55cc57030279b0cc0685ddd0cbb3632260353e037cc3fdff82c86bebd636753fa4fab570f564b58

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            0aa00344dd7ce19d753cd4bab7ca6eea

            SHA1

            daf304197b74b68339ee40b6b0647e11992d63b9

            SHA256

            b53ffc539134e945cb0aeeeb9bdd5cd48bb973c69a4f3b43529222b5e8dfff97

            SHA512

            04afba21c414a902412ab791476a6f12b1a720d98baef205b55cc57030279b0cc0685ddd0cbb3632260353e037cc3fdff82c86bebd636753fa4fab570f564b58

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            36e9415a2abd19f66104ac996611d184

            SHA1

            ae99f86c33973d0b4cc87f65c56fa296398ca93d

            SHA256

            a6b8069bb36dbc84b37ecd3699a2db103ec22ce5e8700fe6c602d1b8eeeae0fe

            SHA512

            d4fe24bb49967dc8e23ef30930ec2e346513343b4d139a666a79048a74797fbcbbe73b3a7ab1ab22ee0b1e304d491bf80a3cf1fc7d1850f12ea3fa4820a56e2f

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            36e9415a2abd19f66104ac996611d184

            SHA1

            ae99f86c33973d0b4cc87f65c56fa296398ca93d

            SHA256

            a6b8069bb36dbc84b37ecd3699a2db103ec22ce5e8700fe6c602d1b8eeeae0fe

            SHA512

            d4fe24bb49967dc8e23ef30930ec2e346513343b4d139a666a79048a74797fbcbbe73b3a7ab1ab22ee0b1e304d491bf80a3cf1fc7d1850f12ea3fa4820a56e2f

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            593223208c930c8dc768eb4a6dd56feb

            SHA1

            aed124c3ae90384577663ce5f29304b11128c466

            SHA256

            c958abb34e5b4dde5f709ed90640011b55b75a7383e3b0a73c13a08df4bb9963

            SHA512

            7dc965f915f93f9919a1383bccf3ae438ffff0366f5507523bebd9a273282f11bea2f19eaa5c57f4de7d3621c69fa929140d1e5be768f72e547e8607eaf3efb8

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            7908196bed0f90219608545f58ae7bd4

            SHA1

            d18b2004d12d7e48f6af829b40e776cd34657b6b

            SHA256

            77560b23bcafae658b478ea79bba982c35ddda8ec866d79432c9db216db8948d

            SHA512

            f8eefe449ca824526e32555d8bfaea4bd146334b2d2c009950cc6124fc5e7ff953f7a433989a3015035d02e40ae31bb610a2de36b8d2199e8fe297b564efb8cc

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            c786b631d4c06fabdc4d17b4cd773ba4

            SHA1

            47208c7ea0dd86e6d9b25727ac2a0c705e4a356c

            SHA256

            af71e17bc4c55f1abcb061db80ffbeaa26928948c1996b3fbdaf18488c92e9cf

            SHA512

            af6adf326b4fa9b05d2a307e1a31d608f4025c63dba741ef8fac10c4b486f9b8b0f7e64e6d7458d6f37ddfcf03928d737ef37adf6134e23a90ec8b99f17eec9d

          • memory/824-86-0x0000000000000000-mapping.dmp
          • memory/848-57-0x0000000000000000-mapping.dmp
          • memory/944-61-0x0000000000000000-mapping.dmp
          • memory/1092-54-0x0000000074C91000-0x0000000074C93000-memory.dmp
            Filesize

            8KB

          • memory/1092-59-0x0000000000370000-0x00000000007BE000-memory.dmp
            Filesize

            4.3MB

          • memory/1092-90-0x0000000000370000-0x00000000007BE000-memory.dmp
            Filesize

            4.3MB

          • memory/1160-64-0x0000000000000000-mapping.dmp
          • memory/1388-58-0x0000000000000000-mapping.dmp
          • memory/1500-87-0x0000000000000000-mapping.dmp
          • memory/1576-76-0x0000000000000000-mapping.dmp
          • memory/1760-70-0x0000000000000000-mapping.dmp
          • memory/1992-80-0x0000000000000000-mapping.dmp
          • memory/2000-81-0x0000000000000000-mapping.dmp
          • memory/2040-62-0x0000000000000000-mapping.dmp