Analysis

  • max time kernel
    89s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:07

General

  • Target

    f2275070d92cdad82c3d0ec885693ea7539fdb20829ddc97bddb3aa22db1a9f5.exe

  • Size

    602KB

  • MD5

    73085265070e6da3cde8fc627c3d44ee

  • SHA1

    a7ab29e090b0602ad1bf26a8b6e92460eed897bd

  • SHA256

    f2275070d92cdad82c3d0ec885693ea7539fdb20829ddc97bddb3aa22db1a9f5

  • SHA512

    f1aba8dc480549961162c88796e8ced96cef2255c9837fdceceb57ff120768803c2d4d07de845dae19f08be60fa6e6a4bf7d341f1c6c1a062c2dff486bbdc1b7

  • SSDEEP

    12288:KIny5DYTjXN7qGqtfX96w3TUqx4OADQZqydWemlhyvah:MUTjdOGFw3TlWZDQFYlGah

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\f2275070d92cdad82c3d0ec885693ea7539fdb20829ddc97bddb3aa22db1a9f5.exe
    "C:\Users\Admin\AppData\Local\Temp\f2275070d92cdad82c3d0ec885693ea7539fdb20829ddc97bddb3aa22db1a9f5.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:2020
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1040
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1500
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:564
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:580
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1376
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1540
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:892
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1732
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1636
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1296
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:908
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1936
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:972

          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

            c218a4b733b3209dfbce7b18c19a28d9

            SHA1

            ebff55084422833e5f7a65e1881cda60f0df5f95

            SHA256

            9a2e167285cbcb8e79ac63fde9292c210f2c2c926230a431f4975643663f065e

            SHA512

            d7d576b00510972c920bfad17409989ec8dee9045e53636eac9c37972ba5c697a71ca78cd5d6a0cd2ee4bb1f9eab1c7b74db917af5252b7cd3b0d92b388d150c

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

            241KB

            MD5

            25ea4abc05336999aac4b605b3961839

            SHA1

            af36a5827daea256a8bc970c66a3c7987cd74b7b

            SHA256

            01c46682c2e8733cf698b8206cd0265b62989770ac59457c591568d2cc8b70b2

            SHA512

            028bba42a1930d436c2c42c3cedc7042067b83bc7100206bf18b9f04a092bca507afe0830b6d5d8e43c2338e7a083315955119a9114cb0629d6c0322ddc34801

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

            108KB

            MD5

            80c7a4349de653a520152144e60051f4

            SHA1

            d048989d867446d825a28f96fbe15bccee85aff4

            SHA256

            c37e1b9619e5ab5a38ea3b461adb0037ecfc680efd22eb2766d2c1a1a1d51a94

            SHA512

            1f5c4235135c9f2812257db17f2f7e0b006284e3d38682654e9693406b8f518fa8ede3f8519783f85f98fa221183af5c0a22d913b79351a0064398546d4374ec

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

            176KB

            MD5

            70f6457c9af98c502cb471af0a1f8b28

            SHA1

            30edeb377d2457b4b345f2142ab8ccbbfcd9fec6

            SHA256

            aba7ddd12ad149688d9e85b945e7baddc04abaa0d50c3ed7542e0519f107f15c

            SHA512

            596c3891e976a151e51adde0f49e78b88190a9ccdabebcdb3b626bcbf4d72c97b3d504b0be4b43b6aa97b854917354ef27e40614ae7c2b123def6fdebbdf12f9

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

            176KB

            MD5

            70f6457c9af98c502cb471af0a1f8b28

            SHA1

            30edeb377d2457b4b345f2142ab8ccbbfcd9fec6

            SHA256

            aba7ddd12ad149688d9e85b945e7baddc04abaa0d50c3ed7542e0519f107f15c

            SHA512

            596c3891e976a151e51adde0f49e78b88190a9ccdabebcdb3b626bcbf4d72c97b3d504b0be4b43b6aa97b854917354ef27e40614ae7c2b123def6fdebbdf12f9

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

            158KB

            MD5

            594370e1d92fdf6d0a81e22dc4c96ac3

            SHA1

            0020ba6243c7d9cb0a37f8bc6df910498b117cb4

            SHA256

            661722c1392e875a44783645d18d76a8598160a6d38ff1469c896ac890c086f9

            SHA512

            3377ec7003d5479e77cddf64a8d9d361bbefbbee2f99e07b17a980fe31996de43161391cdb370dd71153309f3f95dd10786bf81874b3a2c3f4b7d88527719bdf

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

            158KB

            MD5

            594370e1d92fdf6d0a81e22dc4c96ac3

            SHA1

            0020ba6243c7d9cb0a37f8bc6df910498b117cb4

            SHA256

            661722c1392e875a44783645d18d76a8598160a6d38ff1469c896ac890c086f9

            SHA512

            3377ec7003d5479e77cddf64a8d9d361bbefbbee2f99e07b17a980fe31996de43161391cdb370dd71153309f3f95dd10786bf81874b3a2c3f4b7d88527719bdf

          • \Users\Admin\AppData\Local\Temp\nsjBC31.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsjBC31.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjBC31.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjBC31.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsjBC31.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c218a4b733b3209dfbce7b18c19a28d9

            SHA1

            ebff55084422833e5f7a65e1881cda60f0df5f95

            SHA256

            9a2e167285cbcb8e79ac63fde9292c210f2c2c926230a431f4975643663f065e

            SHA512

            d7d576b00510972c920bfad17409989ec8dee9045e53636eac9c37972ba5c697a71ca78cd5d6a0cd2ee4bb1f9eab1c7b74db917af5252b7cd3b0d92b388d150c

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c218a4b733b3209dfbce7b18c19a28d9

            SHA1

            ebff55084422833e5f7a65e1881cda60f0df5f95

            SHA256

            9a2e167285cbcb8e79ac63fde9292c210f2c2c926230a431f4975643663f065e

            SHA512

            d7d576b00510972c920bfad17409989ec8dee9045e53636eac9c37972ba5c697a71ca78cd5d6a0cd2ee4bb1f9eab1c7b74db917af5252b7cd3b0d92b388d150c

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c218a4b733b3209dfbce7b18c19a28d9

            SHA1

            ebff55084422833e5f7a65e1881cda60f0df5f95

            SHA256

            9a2e167285cbcb8e79ac63fde9292c210f2c2c926230a431f4975643663f065e

            SHA512

            d7d576b00510972c920bfad17409989ec8dee9045e53636eac9c37972ba5c697a71ca78cd5d6a0cd2ee4bb1f9eab1c7b74db917af5252b7cd3b0d92b388d150c

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            25ea4abc05336999aac4b605b3961839

            SHA1

            af36a5827daea256a8bc970c66a3c7987cd74b7b

            SHA256

            01c46682c2e8733cf698b8206cd0265b62989770ac59457c591568d2cc8b70b2

            SHA512

            028bba42a1930d436c2c42c3cedc7042067b83bc7100206bf18b9f04a092bca507afe0830b6d5d8e43c2338e7a083315955119a9114cb0629d6c0322ddc34801

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            25ea4abc05336999aac4b605b3961839

            SHA1

            af36a5827daea256a8bc970c66a3c7987cd74b7b

            SHA256

            01c46682c2e8733cf698b8206cd0265b62989770ac59457c591568d2cc8b70b2

            SHA512

            028bba42a1930d436c2c42c3cedc7042067b83bc7100206bf18b9f04a092bca507afe0830b6d5d8e43c2338e7a083315955119a9114cb0629d6c0322ddc34801

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            80c7a4349de653a520152144e60051f4

            SHA1

            d048989d867446d825a28f96fbe15bccee85aff4

            SHA256

            c37e1b9619e5ab5a38ea3b461adb0037ecfc680efd22eb2766d2c1a1a1d51a94

            SHA512

            1f5c4235135c9f2812257db17f2f7e0b006284e3d38682654e9693406b8f518fa8ede3f8519783f85f98fa221183af5c0a22d913b79351a0064398546d4374ec

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            70f6457c9af98c502cb471af0a1f8b28

            SHA1

            30edeb377d2457b4b345f2142ab8ccbbfcd9fec6

            SHA256

            aba7ddd12ad149688d9e85b945e7baddc04abaa0d50c3ed7542e0519f107f15c

            SHA512

            596c3891e976a151e51adde0f49e78b88190a9ccdabebcdb3b626bcbf4d72c97b3d504b0be4b43b6aa97b854917354ef27e40614ae7c2b123def6fdebbdf12f9

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            594370e1d92fdf6d0a81e22dc4c96ac3

            SHA1

            0020ba6243c7d9cb0a37f8bc6df910498b117cb4

            SHA256

            661722c1392e875a44783645d18d76a8598160a6d38ff1469c896ac890c086f9

            SHA512

            3377ec7003d5479e77cddf64a8d9d361bbefbbee2f99e07b17a980fe31996de43161391cdb370dd71153309f3f95dd10786bf81874b3a2c3f4b7d88527719bdf

          • memory/564-61-0x0000000000000000-mapping.dmp
          • memory/580-62-0x0000000000000000-mapping.dmp
          • memory/892-77-0x0000000000000000-mapping.dmp
          • memory/908-88-0x0000000000000000-mapping.dmp
          • memory/1040-57-0x0000000000000000-mapping.dmp
          • memory/1296-87-0x0000000000000000-mapping.dmp
          • memory/1376-64-0x0000000000000000-mapping.dmp
          • memory/1500-58-0x0000000000000000-mapping.dmp
          • memory/1540-71-0x0000000000000000-mapping.dmp
          • memory/1636-82-0x0000000000000000-mapping.dmp
          • memory/1732-81-0x0000000000000000-mapping.dmp
          • memory/2020-69-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/2020-54-0x00000000760B1000-0x00000000760B3000-memory.dmp
            Filesize

            8KB

          • memory/2020-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/2020-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB