Analysis

  • max time kernel
    148s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:59

General

  • Target

    1a4a96cb30dfc14b94d486071117305d671e11eeb72c6b05feb181a03ae35a41.exe

  • Size

    446KB

  • MD5

    a5ac3ca07aee9d44ab3a5ffe7cf6d13c

  • SHA1

    f9fb6a89891ed9392ef4439b1d93289bef5536fb

  • SHA256

    1a4a96cb30dfc14b94d486071117305d671e11eeb72c6b05feb181a03ae35a41

  • SHA512

    bf6bcbc18b70a477ad55f5bdf62766f0ec26356b500300eb4a1599be1816414a2caa2046b3e456e229e020a3c9bb414d440a12b36d56590af9e3766472c4ac5a

  • SSDEEP

    6144:Xzf3Id1nrZ9ffSxWkhd1hNLfdY1Fy3n775221hR0x/kIYmN/8xRd6h+WeODogzJF:7InrLqzldY1jUknWRQQjOoNz0POU

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1a4a96cb30dfc14b94d486071117305d671e11eeb72c6b05feb181a03ae35a41.exe
    "C:\Users\Admin\AppData\Local\Temp\1a4a96cb30dfc14b94d486071117305d671e11eeb72c6b05feb181a03ae35a41.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:4748
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1720
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:980
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1292
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4772
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1624
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4888
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1952
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2720
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4044
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1460
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3500
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:920
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4020

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsn8EE9.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsn8EE9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn8EE9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn8EE9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn8EE9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn8EE9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn8EE9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn8EE9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsn8EE9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c9b5960919192db0e66a8bc555fac996

            SHA1

            f81d8bbfa7e17a57911023c8da47a40d1437251b

            SHA256

            3dc53a94e0543e8f559a8524367980cdcb227bb9955775ba56816c9e9b20106f

            SHA512

            b66a2cb58a2d7fdbaf2afa7ddb1e077fe8def5cde068647b1484552d518ab223b8b401d58cce1bae7a765cbfe88d76b6056448ad62f447d4ef55d0119a4ed19d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c9b5960919192db0e66a8bc555fac996

            SHA1

            f81d8bbfa7e17a57911023c8da47a40d1437251b

            SHA256

            3dc53a94e0543e8f559a8524367980cdcb227bb9955775ba56816c9e9b20106f

            SHA512

            b66a2cb58a2d7fdbaf2afa7ddb1e077fe8def5cde068647b1484552d518ab223b8b401d58cce1bae7a765cbfe88d76b6056448ad62f447d4ef55d0119a4ed19d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c9b5960919192db0e66a8bc555fac996

            SHA1

            f81d8bbfa7e17a57911023c8da47a40d1437251b

            SHA256

            3dc53a94e0543e8f559a8524367980cdcb227bb9955775ba56816c9e9b20106f

            SHA512

            b66a2cb58a2d7fdbaf2afa7ddb1e077fe8def5cde068647b1484552d518ab223b8b401d58cce1bae7a765cbfe88d76b6056448ad62f447d4ef55d0119a4ed19d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c9b5960919192db0e66a8bc555fac996

            SHA1

            f81d8bbfa7e17a57911023c8da47a40d1437251b

            SHA256

            3dc53a94e0543e8f559a8524367980cdcb227bb9955775ba56816c9e9b20106f

            SHA512

            b66a2cb58a2d7fdbaf2afa7ddb1e077fe8def5cde068647b1484552d518ab223b8b401d58cce1bae7a765cbfe88d76b6056448ad62f447d4ef55d0119a4ed19d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            03d3b59a83fab95b5e70428f3aeeb456

            SHA1

            1f0bab6471e31c9c17303ca60f2f86a1b5891ced

            SHA256

            4a61f66905aff1a98033a6612229ea7ad20d494ec7600ed15b4f361688e5b821

            SHA512

            731feae3fc105c6e7438bc2819787662de0be27a17b863d59239aca94b7ab9dd8f5e2da56ade2b1ef985907cdc6dc7f2a71fb1205cdcb2ae33a971aa3a853cb0

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            03d3b59a83fab95b5e70428f3aeeb456

            SHA1

            1f0bab6471e31c9c17303ca60f2f86a1b5891ced

            SHA256

            4a61f66905aff1a98033a6612229ea7ad20d494ec7600ed15b4f361688e5b821

            SHA512

            731feae3fc105c6e7438bc2819787662de0be27a17b863d59239aca94b7ab9dd8f5e2da56ade2b1ef985907cdc6dc7f2a71fb1205cdcb2ae33a971aa3a853cb0

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            03d3b59a83fab95b5e70428f3aeeb456

            SHA1

            1f0bab6471e31c9c17303ca60f2f86a1b5891ced

            SHA256

            4a61f66905aff1a98033a6612229ea7ad20d494ec7600ed15b4f361688e5b821

            SHA512

            731feae3fc105c6e7438bc2819787662de0be27a17b863d59239aca94b7ab9dd8f5e2da56ade2b1ef985907cdc6dc7f2a71fb1205cdcb2ae33a971aa3a853cb0

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            cf97f169e1fd3a1e61e5476c8bf4123e

            SHA1

            8a4a42da5c3c653484ec09a166718b9cd3be3c54

            SHA256

            021cde4e63f4da7b96ac798c45666bee2e36b9fba5c800da13bc10f7eef7f936

            SHA512

            21ddc56009474b6b64f52339604797aea652cc6c94ea3da39a482431bbc64291a7f61005099fb221e8469ccc64038a4f447c5c2ec671f7e5eb02c25a9ed7b737

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            cf97f169e1fd3a1e61e5476c8bf4123e

            SHA1

            8a4a42da5c3c653484ec09a166718b9cd3be3c54

            SHA256

            021cde4e63f4da7b96ac798c45666bee2e36b9fba5c800da13bc10f7eef7f936

            SHA512

            21ddc56009474b6b64f52339604797aea652cc6c94ea3da39a482431bbc64291a7f61005099fb221e8469ccc64038a4f447c5c2ec671f7e5eb02c25a9ed7b737

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d5d46d771ce4be6b45f836fed3d1e332

            SHA1

            f3900c0ecf6716f3b3cbfac3def3d6a908721f0d

            SHA256

            4f395c9f9196896107f272dc5781f5ea1d70acb82987e964bbcfcefad7394535

            SHA512

            b00218b4e4aaa2d67466cfab9f61ee69967f66930d797542d3ac1430995ab8b1a8ce4574d23cdcc14d41864da9d0b9edbb68ee6ae87bfcb16b3f6e42ab9892c9

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d5d46d771ce4be6b45f836fed3d1e332

            SHA1

            f3900c0ecf6716f3b3cbfac3def3d6a908721f0d

            SHA256

            4f395c9f9196896107f272dc5781f5ea1d70acb82987e964bbcfcefad7394535

            SHA512

            b00218b4e4aaa2d67466cfab9f61ee69967f66930d797542d3ac1430995ab8b1a8ce4574d23cdcc14d41864da9d0b9edbb68ee6ae87bfcb16b3f6e42ab9892c9

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d5d46d771ce4be6b45f836fed3d1e332

            SHA1

            f3900c0ecf6716f3b3cbfac3def3d6a908721f0d

            SHA256

            4f395c9f9196896107f272dc5781f5ea1d70acb82987e964bbcfcefad7394535

            SHA512

            b00218b4e4aaa2d67466cfab9f61ee69967f66930d797542d3ac1430995ab8b1a8ce4574d23cdcc14d41864da9d0b9edbb68ee6ae87bfcb16b3f6e42ab9892c9

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0bfbe98becaff47561a71163c378aa18

            SHA1

            deeacf9b7007d7dc8d71bc65b9181e716555f7fe

            SHA256

            1c820dab20fa3a919f6957d48df79897255def44ebbc52f5b0735a88ec430613

            SHA512

            5127716a22b5bfe9718b134b5eb32aaed99dfb3934b2133595e24c4baa638c2ca0a73d9cb35279de76d8ed4c613cd4b9d3ab268e02ed24bde0b55a45ddd2475d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0bfbe98becaff47561a71163c378aa18

            SHA1

            deeacf9b7007d7dc8d71bc65b9181e716555f7fe

            SHA256

            1c820dab20fa3a919f6957d48df79897255def44ebbc52f5b0735a88ec430613

            SHA512

            5127716a22b5bfe9718b134b5eb32aaed99dfb3934b2133595e24c4baa638c2ca0a73d9cb35279de76d8ed4c613cd4b9d3ab268e02ed24bde0b55a45ddd2475d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0bfbe98becaff47561a71163c378aa18

            SHA1

            deeacf9b7007d7dc8d71bc65b9181e716555f7fe

            SHA256

            1c820dab20fa3a919f6957d48df79897255def44ebbc52f5b0735a88ec430613

            SHA512

            5127716a22b5bfe9718b134b5eb32aaed99dfb3934b2133595e24c4baa638c2ca0a73d9cb35279de76d8ed4c613cd4b9d3ab268e02ed24bde0b55a45ddd2475d

          • memory/980-136-0x0000000000000000-mapping.dmp

          • memory/1292-139-0x0000000000000000-mapping.dmp

          • memory/1460-164-0x0000000000000000-mapping.dmp

          • memory/1624-141-0x0000000000000000-mapping.dmp

          • memory/1720-135-0x0000000000000000-mapping.dmp

          • memory/1952-152-0x0000000000000000-mapping.dmp

          • memory/2720-157-0x0000000000000000-mapping.dmp

          • memory/3500-165-0x0000000000000000-mapping.dmp

          • memory/4044-158-0x0000000000000000-mapping.dmp

          • memory/4772-140-0x0000000000000000-mapping.dmp

          • memory/4888-146-0x0000000000000000-mapping.dmp