Analysis

  • max time kernel
    23s
  • 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 10:26

General

  • Target

    4fd4b54c5047697600c2a8938a4f8868a9f3de1e6bc41cc1969d89ffadc46723.exe

  • Size

    599KB

  • MD5

    7dbf5af119627856127ca54badd00e29

  • SHA1

    8a7c6a4d86a69f670d7d3482a4c9bbf878ee6a03

  • SHA256

    4fd4b54c5047697600c2a8938a4f8868a9f3de1e6bc41cc1969d89ffadc46723

  • SHA512

    264227473a012d10e26dfe6e89e5439de979f1f8f8c8df628a670fca2f2a129fbf12f68f060c3fd621509a21e188568dd1b702fe76e6e7c4a30aa229777d66e8

  • SSDEEP

    12288:qIny5DYTGlcTJ99o2An4dzLeTkpviWfeXV+hE2Cocq9PDcJSUm:sUTGlW9K2AnCzLeTwBf9h1Coh9rcJSU

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\4fd4b54c5047697600c2a8938a4f8868a9f3de1e6bc41cc1969d89ffadc46723.exe
    "C:\Users\Admin\AppData\Local\Temp\4fd4b54c5047697600c2a8938a4f8868a9f3de1e6bc41cc1969d89ffadc46723.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:1224
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:988
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1692
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1752
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1592
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1720
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1384
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1812
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1528
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1928
          • 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:1512
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1964
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1504

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            72c95593725ca0d46f5093f2ae101c42

            SHA1

            eaad64142954a73754f6efa41a6c29e7516c1189

            SHA256

            46125175704e09952ccdd6c5b1432212e9e2d081bef1163f942d4f25c5ce2f2a

            SHA512

            6d1e5a5ec118c36d75069bc8c1d2a7aba92380ee6064889fc909b76218e972fd08dcc88c3a8e1ac21f3b2c274af19f934acd67fe02c91691d861b5ab613685ba

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            3d87c4aba91ddfea3f0e17e45d9fcc2c

            SHA1

            6d44be0dba49c73007c777395975023b9028aa95

            SHA256

            9ad82f2ded749879fd980d3713f52db95c80abd360126daec767e042bc7f00d2

            SHA512

            3c073e9d461e0256cf65bdcec5e21f8b15099be32e3a4cee482fe87be6b5ff5b642f246393e2ffc67ce26013ff1ab564e890f8353060e25062902a9108881630

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e1ac0487ba86d93b29ea28d307486403

            SHA1

            d0e1a3a4e3dbe77156a4743fc508d52008addfa6

            SHA256

            e6f5616caa87dd502b29842f480a867ab816a33109ccf9f1965fb8c13479ca69

            SHA512

            3e3a0d099ad7bd5334d9a958150c077918096179f24a01f7e00867a25a88774f17661f6e64f96b48f721df9d402306c135d6cdbe6daff957288f60ff4321a66d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ac50cef56184a53baa40f370d27a5ab1

            SHA1

            e04d639fbe768b5e4b873d9d1598227c6d1c89a9

            SHA256

            eaaf5b1d6e9a7902a1de1e549d54cf54425f5dcfbcee829b6b72446db7a1d72d

            SHA512

            aec9f859002bccc3457804e513673b12cb946888e32d783b6708dddf8336fa432eec101fce559f4e8edf3c0b92e3fb3204b081ddedc25e3b0fdf9a56d0074b20

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ac50cef56184a53baa40f370d27a5ab1

            SHA1

            e04d639fbe768b5e4b873d9d1598227c6d1c89a9

            SHA256

            eaaf5b1d6e9a7902a1de1e549d54cf54425f5dcfbcee829b6b72446db7a1d72d

            SHA512

            aec9f859002bccc3457804e513673b12cb946888e32d783b6708dddf8336fa432eec101fce559f4e8edf3c0b92e3fb3204b081ddedc25e3b0fdf9a56d0074b20

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            ab091c4c847dd5cb2c95e2c96ca0cbfd

            SHA1

            66a86c1d9b998632c44374599fdd53cd45b410c1

            SHA256

            9def3e8c2af59d1656de873a0c6b6fb1e09c56190dc06b998c99c8a181b3258a

            SHA512

            284ed732905306065bb16b46896edf9a092db5d9f604660b08c665498f47caa36287e7176eaf33c08595fd07ffbaa99092ae612766f9d8ec7d47681dd7a82f83

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            ab091c4c847dd5cb2c95e2c96ca0cbfd

            SHA1

            66a86c1d9b998632c44374599fdd53cd45b410c1

            SHA256

            9def3e8c2af59d1656de873a0c6b6fb1e09c56190dc06b998c99c8a181b3258a

            SHA512

            284ed732905306065bb16b46896edf9a092db5d9f604660b08c665498f47caa36287e7176eaf33c08595fd07ffbaa99092ae612766f9d8ec7d47681dd7a82f83

          • \Users\Admin\AppData\Local\Temp\nso452E.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso452E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso452E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso452E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso452E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            72c95593725ca0d46f5093f2ae101c42

            SHA1

            eaad64142954a73754f6efa41a6c29e7516c1189

            SHA256

            46125175704e09952ccdd6c5b1432212e9e2d081bef1163f942d4f25c5ce2f2a

            SHA512

            6d1e5a5ec118c36d75069bc8c1d2a7aba92380ee6064889fc909b76218e972fd08dcc88c3a8e1ac21f3b2c274af19f934acd67fe02c91691d861b5ab613685ba

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            72c95593725ca0d46f5093f2ae101c42

            SHA1

            eaad64142954a73754f6efa41a6c29e7516c1189

            SHA256

            46125175704e09952ccdd6c5b1432212e9e2d081bef1163f942d4f25c5ce2f2a

            SHA512

            6d1e5a5ec118c36d75069bc8c1d2a7aba92380ee6064889fc909b76218e972fd08dcc88c3a8e1ac21f3b2c274af19f934acd67fe02c91691d861b5ab613685ba

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            72c95593725ca0d46f5093f2ae101c42

            SHA1

            eaad64142954a73754f6efa41a6c29e7516c1189

            SHA256

            46125175704e09952ccdd6c5b1432212e9e2d081bef1163f942d4f25c5ce2f2a

            SHA512

            6d1e5a5ec118c36d75069bc8c1d2a7aba92380ee6064889fc909b76218e972fd08dcc88c3a8e1ac21f3b2c274af19f934acd67fe02c91691d861b5ab613685ba

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            3d87c4aba91ddfea3f0e17e45d9fcc2c

            SHA1

            6d44be0dba49c73007c777395975023b9028aa95

            SHA256

            9ad82f2ded749879fd980d3713f52db95c80abd360126daec767e042bc7f00d2

            SHA512

            3c073e9d461e0256cf65bdcec5e21f8b15099be32e3a4cee482fe87be6b5ff5b642f246393e2ffc67ce26013ff1ab564e890f8353060e25062902a9108881630

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            3d87c4aba91ddfea3f0e17e45d9fcc2c

            SHA1

            6d44be0dba49c73007c777395975023b9028aa95

            SHA256

            9ad82f2ded749879fd980d3713f52db95c80abd360126daec767e042bc7f00d2

            SHA512

            3c073e9d461e0256cf65bdcec5e21f8b15099be32e3a4cee482fe87be6b5ff5b642f246393e2ffc67ce26013ff1ab564e890f8353060e25062902a9108881630

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e1ac0487ba86d93b29ea28d307486403

            SHA1

            d0e1a3a4e3dbe77156a4743fc508d52008addfa6

            SHA256

            e6f5616caa87dd502b29842f480a867ab816a33109ccf9f1965fb8c13479ca69

            SHA512

            3e3a0d099ad7bd5334d9a958150c077918096179f24a01f7e00867a25a88774f17661f6e64f96b48f721df9d402306c135d6cdbe6daff957288f60ff4321a66d

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ac50cef56184a53baa40f370d27a5ab1

            SHA1

            e04d639fbe768b5e4b873d9d1598227c6d1c89a9

            SHA256

            eaaf5b1d6e9a7902a1de1e549d54cf54425f5dcfbcee829b6b72446db7a1d72d

            SHA512

            aec9f859002bccc3457804e513673b12cb946888e32d783b6708dddf8336fa432eec101fce559f4e8edf3c0b92e3fb3204b081ddedc25e3b0fdf9a56d0074b20

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            ab091c4c847dd5cb2c95e2c96ca0cbfd

            SHA1

            66a86c1d9b998632c44374599fdd53cd45b410c1

            SHA256

            9def3e8c2af59d1656de873a0c6b6fb1e09c56190dc06b998c99c8a181b3258a

            SHA512

            284ed732905306065bb16b46896edf9a092db5d9f604660b08c665498f47caa36287e7176eaf33c08595fd07ffbaa99092ae612766f9d8ec7d47681dd7a82f83

          • memory/824-86-0x0000000000000000-mapping.dmp

          • memory/988-57-0x0000000000000000-mapping.dmp

          • memory/1224-54-0x0000000076711000-0x0000000076713000-memory.dmp

            Filesize

            8KB

          • memory/1224-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1224-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1384-70-0x0000000000000000-mapping.dmp

          • memory/1512-87-0x0000000000000000-mapping.dmp

          • memory/1528-80-0x0000000000000000-mapping.dmp

          • memory/1592-61-0x0000000000000000-mapping.dmp

          • memory/1692-58-0x0000000000000000-mapping.dmp

          • memory/1720-64-0x0000000000000000-mapping.dmp

          • memory/1752-60-0x0000000000000000-mapping.dmp

          • memory/1812-76-0x0000000000000000-mapping.dmp

          • memory/1928-81-0x0000000000000000-mapping.dmp