Analysis

  • max time kernel
    45s
  • 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 10:20

General

  • Target

    87028f1eb2f405b5cf6d5c9545d85fae9c1922e9034f170848490d6401c20117.exe

  • Size

    601KB

  • MD5

    1d2b5ae27f7561f9dacb02a6780323d6

  • SHA1

    c2a00ea0de8042b11cd1cc3e572998ffe1af323c

  • SHA256

    87028f1eb2f405b5cf6d5c9545d85fae9c1922e9034f170848490d6401c20117

  • SHA512

    b4a7cc1f822ac33b000fa669fdeb06e7b84d65f743a33b3b3d8c4c813a5e484a8253d12e80a50ed5a8bdb1d2191637dba968b124c12baf355166bd1a5e495181

  • SSDEEP

    12288:UIny5DYTtuGYEDGsUfFH/4ZhQNS8ZOwYZg8:SUTtuGUHyQNfZug8

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\87028f1eb2f405b5cf6d5c9545d85fae9c1922e9034f170848490d6401c20117.exe
    "C:\Users\Admin\AppData\Local\Temp\87028f1eb2f405b5cf6d5c9545d85fae9c1922e9034f170848490d6401c20117.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:684
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1108
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2020
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2040
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1972
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1988
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1160
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1560
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:308
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1556
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1048
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1636
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:2012
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:964

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d52f63e93f4872fba2889396b4084e60

            SHA1

            b698b387b28d1c33a04db7c7f5f9a784cb03151f

            SHA256

            af7837913273e02bd3844820491a715901a03d30dc81b55660e921cffd573ab3

            SHA512

            347983c5831b03e86c4193da3e1a36d60e710e0f506d3df0726fc29b518380757dc37355fc7822d93cd8e2deda5d03ed75e13a024292b9571137585ead68d249

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            fc55758829f2150e77f190c7b7881b97

            SHA1

            b17d7a67dc5e7a6121b06e3cd7575d4521a8e1ba

            SHA256

            f28afe1ce9c4301915c2f22f263a39c8d27a90d90c52cf2461c344e081f06ab7

            SHA512

            f7e27fad889858dfeac97d5401cc0eb9b1d56005381f4c4df216d8f605cf18f550b2338d40f664f05205199fb85fabbdb65dc36f43d64291b76a6a89442ecc1c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            c1b413b0c224b359b35c38a5e35febb9

            SHA1

            439736847e8d19da841e643cb1ba2ddc94530bc8

            SHA256

            9434094d6b33f89ce169488415637676858967b22370f2c464b735353a5bb2c8

            SHA512

            e10c3be51057888ef6102831e1e3b71133e33855506bb3b18c65b1d2f101c5e80cae6234a76c08dfa64f393a9192eea38616a12901ad60e343dee9aa55dd2b0d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            807ce748a80b59d0b63f139d6a536a4a

            SHA1

            e85b1f8029002331d2c6936314beb18dab85fc17

            SHA256

            80623f40795798dc5c1548bf09ff17de2520decf02fe6e14ed768c8b44a369ea

            SHA512

            a341081e618710cee284ef59861beceaf5740d221886265345e0bf92d061a0d65066e1b2ea6fafeda355bd9fa082867174524a4abbd95d469f72db386d78ee4d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            807ce748a80b59d0b63f139d6a536a4a

            SHA1

            e85b1f8029002331d2c6936314beb18dab85fc17

            SHA256

            80623f40795798dc5c1548bf09ff17de2520decf02fe6e14ed768c8b44a369ea

            SHA512

            a341081e618710cee284ef59861beceaf5740d221886265345e0bf92d061a0d65066e1b2ea6fafeda355bd9fa082867174524a4abbd95d469f72db386d78ee4d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            84855d09d4f7132dabfa667812e022b7

            SHA1

            3f032eaf682d0712ddb83357a5c8305ce55b2aeb

            SHA256

            c92b9fb9a69e0ff308fa0908c968639f25411d6825eace67c475a9fb248640c7

            SHA512

            a49f2fe8090d56dd97f3e86d553c791b80d8ccac7b6fc64d4f87683ad09c40531b269e96c6f43f763cc9c4a76f0efc9b16c03199e82251d1abca700f849355b9

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            84855d09d4f7132dabfa667812e022b7

            SHA1

            3f032eaf682d0712ddb83357a5c8305ce55b2aeb

            SHA256

            c92b9fb9a69e0ff308fa0908c968639f25411d6825eace67c475a9fb248640c7

            SHA512

            a49f2fe8090d56dd97f3e86d553c791b80d8ccac7b6fc64d4f87683ad09c40531b269e96c6f43f763cc9c4a76f0efc9b16c03199e82251d1abca700f849355b9

          • \Users\Admin\AppData\Local\Temp\nso910C.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso910C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso910C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso910C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso910C.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d52f63e93f4872fba2889396b4084e60

            SHA1

            b698b387b28d1c33a04db7c7f5f9a784cb03151f

            SHA256

            af7837913273e02bd3844820491a715901a03d30dc81b55660e921cffd573ab3

            SHA512

            347983c5831b03e86c4193da3e1a36d60e710e0f506d3df0726fc29b518380757dc37355fc7822d93cd8e2deda5d03ed75e13a024292b9571137585ead68d249

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d52f63e93f4872fba2889396b4084e60

            SHA1

            b698b387b28d1c33a04db7c7f5f9a784cb03151f

            SHA256

            af7837913273e02bd3844820491a715901a03d30dc81b55660e921cffd573ab3

            SHA512

            347983c5831b03e86c4193da3e1a36d60e710e0f506d3df0726fc29b518380757dc37355fc7822d93cd8e2deda5d03ed75e13a024292b9571137585ead68d249

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d52f63e93f4872fba2889396b4084e60

            SHA1

            b698b387b28d1c33a04db7c7f5f9a784cb03151f

            SHA256

            af7837913273e02bd3844820491a715901a03d30dc81b55660e921cffd573ab3

            SHA512

            347983c5831b03e86c4193da3e1a36d60e710e0f506d3df0726fc29b518380757dc37355fc7822d93cd8e2deda5d03ed75e13a024292b9571137585ead68d249

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            fc55758829f2150e77f190c7b7881b97

            SHA1

            b17d7a67dc5e7a6121b06e3cd7575d4521a8e1ba

            SHA256

            f28afe1ce9c4301915c2f22f263a39c8d27a90d90c52cf2461c344e081f06ab7

            SHA512

            f7e27fad889858dfeac97d5401cc0eb9b1d56005381f4c4df216d8f605cf18f550b2338d40f664f05205199fb85fabbdb65dc36f43d64291b76a6a89442ecc1c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            fc55758829f2150e77f190c7b7881b97

            SHA1

            b17d7a67dc5e7a6121b06e3cd7575d4521a8e1ba

            SHA256

            f28afe1ce9c4301915c2f22f263a39c8d27a90d90c52cf2461c344e081f06ab7

            SHA512

            f7e27fad889858dfeac97d5401cc0eb9b1d56005381f4c4df216d8f605cf18f550b2338d40f664f05205199fb85fabbdb65dc36f43d64291b76a6a89442ecc1c

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            c1b413b0c224b359b35c38a5e35febb9

            SHA1

            439736847e8d19da841e643cb1ba2ddc94530bc8

            SHA256

            9434094d6b33f89ce169488415637676858967b22370f2c464b735353a5bb2c8

            SHA512

            e10c3be51057888ef6102831e1e3b71133e33855506bb3b18c65b1d2f101c5e80cae6234a76c08dfa64f393a9192eea38616a12901ad60e343dee9aa55dd2b0d

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            807ce748a80b59d0b63f139d6a536a4a

            SHA1

            e85b1f8029002331d2c6936314beb18dab85fc17

            SHA256

            80623f40795798dc5c1548bf09ff17de2520decf02fe6e14ed768c8b44a369ea

            SHA512

            a341081e618710cee284ef59861beceaf5740d221886265345e0bf92d061a0d65066e1b2ea6fafeda355bd9fa082867174524a4abbd95d469f72db386d78ee4d

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            84855d09d4f7132dabfa667812e022b7

            SHA1

            3f032eaf682d0712ddb83357a5c8305ce55b2aeb

            SHA256

            c92b9fb9a69e0ff308fa0908c968639f25411d6825eace67c475a9fb248640c7

            SHA512

            a49f2fe8090d56dd97f3e86d553c791b80d8ccac7b6fc64d4f87683ad09c40531b269e96c6f43f763cc9c4a76f0efc9b16c03199e82251d1abca700f849355b9

          • memory/308-81-0x0000000000000000-mapping.dmp

          • memory/684-54-0x0000000075241000-0x0000000075243000-memory.dmp

            Filesize

            8KB

          • memory/684-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/684-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/684-58-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1048-87-0x0000000000000000-mapping.dmp

          • memory/1108-57-0x0000000000000000-mapping.dmp

          • memory/1160-71-0x0000000000000000-mapping.dmp

          • memory/1556-82-0x0000000000000000-mapping.dmp

          • memory/1560-77-0x0000000000000000-mapping.dmp

          • memory/1636-88-0x0000000000000000-mapping.dmp

          • memory/1972-62-0x0000000000000000-mapping.dmp

          • memory/1988-64-0x0000000000000000-mapping.dmp

          • memory/2020-59-0x0000000000000000-mapping.dmp

          • memory/2040-61-0x0000000000000000-mapping.dmp