Analysis

  • max time kernel
    42s
  • 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 10:11

General

  • Target

    d167d0b2144b39041956ca12d5e6f3dfc1f929c3f27b4c2442b6b3fd2412ee94.exe

  • Size

    603KB

  • MD5

    4f0bd7f4e586decdc172b1326673ea95

  • SHA1

    fca2dbd1c4f6dc7e2a13d60f7380e73dccecc96f

  • SHA256

    d167d0b2144b39041956ca12d5e6f3dfc1f929c3f27b4c2442b6b3fd2412ee94

  • SHA512

    e1a7ea8368fa6e2558a304bf4cc97606a4bc5b7a9edabad0e802100ac74cf9d7b7e1c8ad73454ec937b5f2d6f89943c3f9405baaae2e09a6baa828eb405aef78

  • SSDEEP

    12288:gIny5DYTMIJ3arK/rGy8eHN8PxuLihQULokxF0gJSmbEJ:eUTMO3fR8iN8aenx6gJSIE

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\d167d0b2144b39041956ca12d5e6f3dfc1f929c3f27b4c2442b6b3fd2412ee94.exe
    "C:\Users\Admin\AppData\Local\Temp\d167d0b2144b39041956ca12d5e6f3dfc1f929c3f27b4c2442b6b3fd2412ee94.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:1672
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1696
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1176
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1540
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1648
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:624
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:392
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:276
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1524
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1260
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1640
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1440
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:584
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1344

          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

            e8ffe4177e81165a99ce4c7c193e4766

            SHA1

            96fc2261b589d2d391a11aa5cc7236c8f7341c54

            SHA256

            ed54063c5a965d09094cd15755b66511361795e692ce8eb2382629157875ca04

            SHA512

            02014a0d39721f6e10a9be582be2d83d50db262e9e1e7be2805831b21f088af411db97f1d3e4b9dc6ed4daeb9552395b4f6351fbadc75ee6b8a2c88cf9bf7229

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

            244KB

            MD5

            7cf863857f38c24fc23d0aa50c090320

            SHA1

            ba94eb48a0f884c9ac8765e6d547424841fc53f0

            SHA256

            8a91b96e43ceadea32cb1684f19321b0a8988c3c270a6d239c34e200672ec427

            SHA512

            d55a24d16c29c2e3791fd9903ef129bdb5bba092a9fe1323736ed9df17bc60e515141d9dd901d4fbc89b35c62d227114fd4df67a1354e4e7ebce2ea6bcdbd761

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

            108KB

            MD5

            e63632332a7236bd4f25dd07144ddcfe

            SHA1

            0763cb46fa46ab0f5d3992beff740ada9af515e3

            SHA256

            898cff8e198670d5765f260eda62a3003c374737a59743bcca8f9e107163985e

            SHA512

            3582347ff0158cf14651e23963c423cb23ef0926b582a450dde17ecdbd9497dfb3d98f753b26c28a9f9abde2fa93460bd79c5414acbb7d1223ec97969c882c07

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

            176KB

            MD5

            5861368188685c50628ef3d3428f3a51

            SHA1

            96aace800e27af01e3d2c392ba918be75b4fa87b

            SHA256

            6f5ae3f63d4c8d3e2ec11f1cd472b62c6f09e6d4d86033adb0348050cc6840cd

            SHA512

            11d83b7a966da3f3675ed89b0fe900158a810891506df1b4ceda601ccf67fef580788684b4b7fef1de7539e9271391fca55342ca7b04dc5b14b5702584d2923f

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

            176KB

            MD5

            5861368188685c50628ef3d3428f3a51

            SHA1

            96aace800e27af01e3d2c392ba918be75b4fa87b

            SHA256

            6f5ae3f63d4c8d3e2ec11f1cd472b62c6f09e6d4d86033adb0348050cc6840cd

            SHA512

            11d83b7a966da3f3675ed89b0fe900158a810891506df1b4ceda601ccf67fef580788684b4b7fef1de7539e9271391fca55342ca7b04dc5b14b5702584d2923f

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

            159KB

            MD5

            da345cce0d2229c1523273b3a02afa4b

            SHA1

            75d60efb5814220e32148f3a3f12126b79a48884

            SHA256

            75e8bbb83eb8aa29b4734b9568ea018346c3dff33a61ab358f68dc3751b7f590

            SHA512

            3cd27861527b8266813cdb8d7b77612c55b59fb22c8b8b860e0e58fa0ca6e2e759c0685fe2651e2fb934dc6bd4dbbeb7a83e27087f489bd90eee678bc3f98c26

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

            159KB

            MD5

            da345cce0d2229c1523273b3a02afa4b

            SHA1

            75d60efb5814220e32148f3a3f12126b79a48884

            SHA256

            75e8bbb83eb8aa29b4734b9568ea018346c3dff33a61ab358f68dc3751b7f590

            SHA512

            3cd27861527b8266813cdb8d7b77612c55b59fb22c8b8b860e0e58fa0ca6e2e759c0685fe2651e2fb934dc6bd4dbbeb7a83e27087f489bd90eee678bc3f98c26

          • \Users\Admin\AppData\Local\Temp\nsd1087.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd1087.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd1087.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd1087.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd1087.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            e8ffe4177e81165a99ce4c7c193e4766

            SHA1

            96fc2261b589d2d391a11aa5cc7236c8f7341c54

            SHA256

            ed54063c5a965d09094cd15755b66511361795e692ce8eb2382629157875ca04

            SHA512

            02014a0d39721f6e10a9be582be2d83d50db262e9e1e7be2805831b21f088af411db97f1d3e4b9dc6ed4daeb9552395b4f6351fbadc75ee6b8a2c88cf9bf7229

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            e8ffe4177e81165a99ce4c7c193e4766

            SHA1

            96fc2261b589d2d391a11aa5cc7236c8f7341c54

            SHA256

            ed54063c5a965d09094cd15755b66511361795e692ce8eb2382629157875ca04

            SHA512

            02014a0d39721f6e10a9be582be2d83d50db262e9e1e7be2805831b21f088af411db97f1d3e4b9dc6ed4daeb9552395b4f6351fbadc75ee6b8a2c88cf9bf7229

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            e8ffe4177e81165a99ce4c7c193e4766

            SHA1

            96fc2261b589d2d391a11aa5cc7236c8f7341c54

            SHA256

            ed54063c5a965d09094cd15755b66511361795e692ce8eb2382629157875ca04

            SHA512

            02014a0d39721f6e10a9be582be2d83d50db262e9e1e7be2805831b21f088af411db97f1d3e4b9dc6ed4daeb9552395b4f6351fbadc75ee6b8a2c88cf9bf7229

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            7cf863857f38c24fc23d0aa50c090320

            SHA1

            ba94eb48a0f884c9ac8765e6d547424841fc53f0

            SHA256

            8a91b96e43ceadea32cb1684f19321b0a8988c3c270a6d239c34e200672ec427

            SHA512

            d55a24d16c29c2e3791fd9903ef129bdb5bba092a9fe1323736ed9df17bc60e515141d9dd901d4fbc89b35c62d227114fd4df67a1354e4e7ebce2ea6bcdbd761

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            7cf863857f38c24fc23d0aa50c090320

            SHA1

            ba94eb48a0f884c9ac8765e6d547424841fc53f0

            SHA256

            8a91b96e43ceadea32cb1684f19321b0a8988c3c270a6d239c34e200672ec427

            SHA512

            d55a24d16c29c2e3791fd9903ef129bdb5bba092a9fe1323736ed9df17bc60e515141d9dd901d4fbc89b35c62d227114fd4df67a1354e4e7ebce2ea6bcdbd761

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            e63632332a7236bd4f25dd07144ddcfe

            SHA1

            0763cb46fa46ab0f5d3992beff740ada9af515e3

            SHA256

            898cff8e198670d5765f260eda62a3003c374737a59743bcca8f9e107163985e

            SHA512

            3582347ff0158cf14651e23963c423cb23ef0926b582a450dde17ecdbd9497dfb3d98f753b26c28a9f9abde2fa93460bd79c5414acbb7d1223ec97969c882c07

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            5861368188685c50628ef3d3428f3a51

            SHA1

            96aace800e27af01e3d2c392ba918be75b4fa87b

            SHA256

            6f5ae3f63d4c8d3e2ec11f1cd472b62c6f09e6d4d86033adb0348050cc6840cd

            SHA512

            11d83b7a966da3f3675ed89b0fe900158a810891506df1b4ceda601ccf67fef580788684b4b7fef1de7539e9271391fca55342ca7b04dc5b14b5702584d2923f

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            da345cce0d2229c1523273b3a02afa4b

            SHA1

            75d60efb5814220e32148f3a3f12126b79a48884

            SHA256

            75e8bbb83eb8aa29b4734b9568ea018346c3dff33a61ab358f68dc3751b7f590

            SHA512

            3cd27861527b8266813cdb8d7b77612c55b59fb22c8b8b860e0e58fa0ca6e2e759c0685fe2651e2fb934dc6bd4dbbeb7a83e27087f489bd90eee678bc3f98c26

          • memory/276-76-0x0000000000000000-mapping.dmp
          • memory/392-70-0x0000000000000000-mapping.dmp
          • memory/624-64-0x0000000000000000-mapping.dmp
          • memory/1176-58-0x0000000000000000-mapping.dmp
          • memory/1260-81-0x0000000000000000-mapping.dmp
          • memory/1440-87-0x0000000000000000-mapping.dmp
          • memory/1524-80-0x0000000000000000-mapping.dmp
          • memory/1540-60-0x0000000000000000-mapping.dmp
          • memory/1640-86-0x0000000000000000-mapping.dmp
          • memory/1648-61-0x0000000000000000-mapping.dmp
          • memory/1672-54-0x0000000075201000-0x0000000075203000-memory.dmp
            Filesize

            8KB

          • memory/1672-62-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1672-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1696-57-0x0000000000000000-mapping.dmp