Analysis

  • max time kernel
    38s
  • max time network
    43s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:29

General

  • Target

    39102967e2e3a913b1a4f5d499fe73c38902961b7634ae2b0c1075f117a42fc0.exe

  • Size

    603KB

  • MD5

    b8e721c8971443398ec7003f7185d0a6

  • SHA1

    18f12c771a100a9b61032cb805a821212280ad4f

  • SHA256

    39102967e2e3a913b1a4f5d499fe73c38902961b7634ae2b0c1075f117a42fc0

  • SHA512

    dab2df1f7fe0b2e929d96cef5cd5f49f13838c4b8b6f68b1b14cdd2a94559416fc9d21fef3d57534d0f95f1dcf21762d933a881efd9f8a9e4e8431a3bd5cfb0e

  • SSDEEP

    12288:QIny5DYTEDiXx4seXnkWDKxfzmDjCMNVNeQbMv:uUTEOX1ynkWOzmPCcbe

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\39102967e2e3a913b1a4f5d499fe73c38902961b7634ae2b0c1075f117a42fc0.exe
    "C:\Users\Admin\AppData\Local\Temp\39102967e2e3a913b1a4f5d499fe73c38902961b7634ae2b0c1075f117a42fc0.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:1636
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:112
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1444
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1328
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1452
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1460
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:552
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1656
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2028
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2040
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1624
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1268
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:2004
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:776

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d46c36cba19f7796bf8d46df02c9f1f1

            SHA1

            1d30fca4672dfd016602ef6195165e663c8f29a6

            SHA256

            44a0fa83aa477f8b5877230ac85bb1f29d1717a2b39ac86d060f91e32c28138d

            SHA512

            a9034ef7654a9eca1f176355193eada1985ebc0107df167eb1cc45d3b580b69938c6aebe43411c5ceefd6bc553fcad080db0adf6a99606dfa0defcba71cde0b1

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            724b9dc9e5de7cb8388206560988d659

            SHA1

            208b5d414350afcc3a298ef3134f1e50fe2a2864

            SHA256

            b73283a9db8a8d8f6855d5d3fdfd4c73661583c2985052ac14076d3723a08fe3

            SHA512

            571abc66b1ac4ff9e2cff60179159e79fc842e2d6c7d855b1cfc8b1a4d481c169a506f8362dfdf2afd7b17dc59d3717e96565ff66e6b5481384df24fd1bddcc3

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            af079290ac977aeb32b89c7aa28a5257

            SHA1

            b80a759ddd2eee9ddeceaadc1a3090e72bf5161c

            SHA256

            64dbf4c1e1629ddaaf991c633e8e6cfc0b98cb765552bae3e7975758cc0900ff

            SHA512

            c3a0184509403ae1781e6b85e3ae6c565ecfb6be6252e2f70b5ac8c159197117df8d830efd8d9878db2bb8615af8666f083bf9922f955453ed8f432415abc952

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0330dd1163207fd56a83d97376078e6f

            SHA1

            40abcea7af0d9aef61556668240ff6574ce7c854

            SHA256

            f136bc49eaccb4804a12d746276a083c1e95e305173fbf76ec930dda029be75f

            SHA512

            42e6853fda40da1baa2d53dab38921d112cb94b10c40be0cf562fbf42daf935017f880ca4f72e231c97566a952394af22ba6c3dbdfe822ac6a8314471ef83073

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0330dd1163207fd56a83d97376078e6f

            SHA1

            40abcea7af0d9aef61556668240ff6574ce7c854

            SHA256

            f136bc49eaccb4804a12d746276a083c1e95e305173fbf76ec930dda029be75f

            SHA512

            42e6853fda40da1baa2d53dab38921d112cb94b10c40be0cf562fbf42daf935017f880ca4f72e231c97566a952394af22ba6c3dbdfe822ac6a8314471ef83073

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            dfee9eaa0e89e276c208ff6dcdf80137

            SHA1

            5d3e5c74342394c957423e353d7f79984c1d558b

            SHA256

            8d2f37a55408db9e3d90bffaeac0d74ea6244fb261057e14a3ccda1cbb456da0

            SHA512

            8231d59b9a7f8b6c0643d175446b2d50de01c86fbe1e1f5d2556dc238745ceac754c76ab379cb66104abe102e43771e6cecc9135999760bca10d8b679661cc3b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            dfee9eaa0e89e276c208ff6dcdf80137

            SHA1

            5d3e5c74342394c957423e353d7f79984c1d558b

            SHA256

            8d2f37a55408db9e3d90bffaeac0d74ea6244fb261057e14a3ccda1cbb456da0

            SHA512

            8231d59b9a7f8b6c0643d175446b2d50de01c86fbe1e1f5d2556dc238745ceac754c76ab379cb66104abe102e43771e6cecc9135999760bca10d8b679661cc3b

          • \Users\Admin\AppData\Local\Temp\nsy2916.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy2916.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2916.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2916.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2916.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d46c36cba19f7796bf8d46df02c9f1f1

            SHA1

            1d30fca4672dfd016602ef6195165e663c8f29a6

            SHA256

            44a0fa83aa477f8b5877230ac85bb1f29d1717a2b39ac86d060f91e32c28138d

            SHA512

            a9034ef7654a9eca1f176355193eada1985ebc0107df167eb1cc45d3b580b69938c6aebe43411c5ceefd6bc553fcad080db0adf6a99606dfa0defcba71cde0b1

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d46c36cba19f7796bf8d46df02c9f1f1

            SHA1

            1d30fca4672dfd016602ef6195165e663c8f29a6

            SHA256

            44a0fa83aa477f8b5877230ac85bb1f29d1717a2b39ac86d060f91e32c28138d

            SHA512

            a9034ef7654a9eca1f176355193eada1985ebc0107df167eb1cc45d3b580b69938c6aebe43411c5ceefd6bc553fcad080db0adf6a99606dfa0defcba71cde0b1

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d46c36cba19f7796bf8d46df02c9f1f1

            SHA1

            1d30fca4672dfd016602ef6195165e663c8f29a6

            SHA256

            44a0fa83aa477f8b5877230ac85bb1f29d1717a2b39ac86d060f91e32c28138d

            SHA512

            a9034ef7654a9eca1f176355193eada1985ebc0107df167eb1cc45d3b580b69938c6aebe43411c5ceefd6bc553fcad080db0adf6a99606dfa0defcba71cde0b1

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            724b9dc9e5de7cb8388206560988d659

            SHA1

            208b5d414350afcc3a298ef3134f1e50fe2a2864

            SHA256

            b73283a9db8a8d8f6855d5d3fdfd4c73661583c2985052ac14076d3723a08fe3

            SHA512

            571abc66b1ac4ff9e2cff60179159e79fc842e2d6c7d855b1cfc8b1a4d481c169a506f8362dfdf2afd7b17dc59d3717e96565ff66e6b5481384df24fd1bddcc3

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            724b9dc9e5de7cb8388206560988d659

            SHA1

            208b5d414350afcc3a298ef3134f1e50fe2a2864

            SHA256

            b73283a9db8a8d8f6855d5d3fdfd4c73661583c2985052ac14076d3723a08fe3

            SHA512

            571abc66b1ac4ff9e2cff60179159e79fc842e2d6c7d855b1cfc8b1a4d481c169a506f8362dfdf2afd7b17dc59d3717e96565ff66e6b5481384df24fd1bddcc3

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            af079290ac977aeb32b89c7aa28a5257

            SHA1

            b80a759ddd2eee9ddeceaadc1a3090e72bf5161c

            SHA256

            64dbf4c1e1629ddaaf991c633e8e6cfc0b98cb765552bae3e7975758cc0900ff

            SHA512

            c3a0184509403ae1781e6b85e3ae6c565ecfb6be6252e2f70b5ac8c159197117df8d830efd8d9878db2bb8615af8666f083bf9922f955453ed8f432415abc952

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            0330dd1163207fd56a83d97376078e6f

            SHA1

            40abcea7af0d9aef61556668240ff6574ce7c854

            SHA256

            f136bc49eaccb4804a12d746276a083c1e95e305173fbf76ec930dda029be75f

            SHA512

            42e6853fda40da1baa2d53dab38921d112cb94b10c40be0cf562fbf42daf935017f880ca4f72e231c97566a952394af22ba6c3dbdfe822ac6a8314471ef83073

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            dfee9eaa0e89e276c208ff6dcdf80137

            SHA1

            5d3e5c74342394c957423e353d7f79984c1d558b

            SHA256

            8d2f37a55408db9e3d90bffaeac0d74ea6244fb261057e14a3ccda1cbb456da0

            SHA512

            8231d59b9a7f8b6c0643d175446b2d50de01c86fbe1e1f5d2556dc238745ceac754c76ab379cb66104abe102e43771e6cecc9135999760bca10d8b679661cc3b

          • memory/112-58-0x0000000000000000-mapping.dmp

          • memory/552-70-0x0000000000000000-mapping.dmp

          • memory/1268-87-0x0000000000000000-mapping.dmp

          • memory/1328-61-0x0000000000000000-mapping.dmp

          • memory/1444-59-0x0000000000000000-mapping.dmp

          • memory/1452-62-0x0000000000000000-mapping.dmp

          • memory/1460-64-0x0000000000000000-mapping.dmp

          • memory/1624-86-0x0000000000000000-mapping.dmp

          • memory/1636-54-0x0000000075E51000-0x0000000075E53000-memory.dmp

            Filesize

            8KB

          • memory/1636-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1636-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1656-76-0x0000000000000000-mapping.dmp

          • memory/2028-80-0x0000000000000000-mapping.dmp

          • memory/2040-81-0x0000000000000000-mapping.dmp