Analysis

  • max time kernel
    43s
  • 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 10:17

General

  • Target

    a186a105762f106f20dadb75f5134c9752c6ca2314c78f5324ff2d8fb0954760.exe

  • Size

    603KB

  • MD5

    48e7c1812826a2d3973828b50f8ca449

  • SHA1

    11d1f1a161bc6e73e3e58209cd53af57399fa9af

  • SHA256

    a186a105762f106f20dadb75f5134c9752c6ca2314c78f5324ff2d8fb0954760

  • SHA512

    5fee82312ade5f1788a92ce6a956a727b9bc8c3add3bb1e8dae48a6ef6a87e675bdf16ce3ef1c88d67a10bab8b9c207e33d264f352ca21f54d93633f7eeb5bef

  • SSDEEP

    12288:aIny5DYTfIRYlf/xtDavoCz9g0ACVQoc2HHO4vx77HiRPaSJhlMju:8UTfKYlRtD8AeK2Hu4pYRci

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\a186a105762f106f20dadb75f5134c9752c6ca2314c78f5324ff2d8fb0954760.exe
    "C:\Users\Admin\AppData\Local\Temp\a186a105762f106f20dadb75f5134c9752c6ca2314c78f5324ff2d8fb0954760.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:1208
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:824
      • 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:820
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1060
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1984
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1712
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:876
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1180
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1776
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1976
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1884
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:804
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1428

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            779d47cf34827131041303918031079f

            SHA1

            20db6f9d9a6a81022b9f4991f0289f29d22a3ee1

            SHA256

            e0672c636962f7e0c8f342ea172c0a0a707add97b565633fa707225e1bbe6b17

            SHA512

            27c64ac29b05001162c1bb81b09211e83350a27a22b87da358ef4024990d9dc259b3cea28c9e075d9aee6daa3363ad79a8f5dd757b871d0cc5f118b184d7074d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            57988fc12c286ec44715fa2d2b118357

            SHA1

            ff6858563f69ef3766ad16bad2b7928f52cdaab7

            SHA256

            2cd76f180749e67ce8c0cda3a70f505900780532b7820d0bdd15279ad21579bd

            SHA512

            a8c9cedf7d1a34087365bfdfa50fa2727a246f59c444efc3e2c91ec8175ab46aafe015b5044262113af5b64a65645a3668054ac5bafac44f19a7e2f00cc29f87

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e6910ec0236bb8f5e977f44c7a3a3b5e

            SHA1

            f88dc812417a3f681279d15e827e09701307025d

            SHA256

            faddb11265a343beb764d61da21a88542f920073de90095f5d35ae7141b7e38a

            SHA512

            3630f49526f55a48de2cfa4fec693f03625d7d6a191397b49a8405bc25b1ba9f47bee99095e33556d4580a0eeb945767b62b203fa66ce4e54bc5b649626e9c3c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6f4ac8b52f3eb1077329d1d77039e40f

            SHA1

            8661ac5b263c0e20253a18fec1342f8494fda8b7

            SHA256

            c38873ad6f780df1f27aecda72192bb8088b274587636eec61940f836e1afdef

            SHA512

            9739e3aa5ecc05fb9f1eac6e10a97ec403de2b6d085f03f85ffd24000c50c93de6398a5d4595ac1638db4fc68541c4e5d21d125d130f1ff3505f25452561feff

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6f4ac8b52f3eb1077329d1d77039e40f

            SHA1

            8661ac5b263c0e20253a18fec1342f8494fda8b7

            SHA256

            c38873ad6f780df1f27aecda72192bb8088b274587636eec61940f836e1afdef

            SHA512

            9739e3aa5ecc05fb9f1eac6e10a97ec403de2b6d085f03f85ffd24000c50c93de6398a5d4595ac1638db4fc68541c4e5d21d125d130f1ff3505f25452561feff

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            f7f8c40dc94dc5695545088b8b1f378d

            SHA1

            e402691e2717605cfd8c0564d2bb199868d37bd3

            SHA256

            bf2fccfbc9a911dc9aeb8fd38eacd970435ef73ac10c6017b9858b76f6324624

            SHA512

            3fe1e1aeb587373bd99c8da00cdf5ed0dc145c8cf1d31e6ab73c90dfb902e0bb5196b0d3d0746b811b2395b53fb8bbd0e85726e5713009b737ad5f9b5511fad0

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            f7f8c40dc94dc5695545088b8b1f378d

            SHA1

            e402691e2717605cfd8c0564d2bb199868d37bd3

            SHA256

            bf2fccfbc9a911dc9aeb8fd38eacd970435ef73ac10c6017b9858b76f6324624

            SHA512

            3fe1e1aeb587373bd99c8da00cdf5ed0dc145c8cf1d31e6ab73c90dfb902e0bb5196b0d3d0746b811b2395b53fb8bbd0e85726e5713009b737ad5f9b5511fad0

          • \Users\Admin\AppData\Local\Temp\nso1D8.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso1D8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1D8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1D8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1D8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            779d47cf34827131041303918031079f

            SHA1

            20db6f9d9a6a81022b9f4991f0289f29d22a3ee1

            SHA256

            e0672c636962f7e0c8f342ea172c0a0a707add97b565633fa707225e1bbe6b17

            SHA512

            27c64ac29b05001162c1bb81b09211e83350a27a22b87da358ef4024990d9dc259b3cea28c9e075d9aee6daa3363ad79a8f5dd757b871d0cc5f118b184d7074d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            779d47cf34827131041303918031079f

            SHA1

            20db6f9d9a6a81022b9f4991f0289f29d22a3ee1

            SHA256

            e0672c636962f7e0c8f342ea172c0a0a707add97b565633fa707225e1bbe6b17

            SHA512

            27c64ac29b05001162c1bb81b09211e83350a27a22b87da358ef4024990d9dc259b3cea28c9e075d9aee6daa3363ad79a8f5dd757b871d0cc5f118b184d7074d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            779d47cf34827131041303918031079f

            SHA1

            20db6f9d9a6a81022b9f4991f0289f29d22a3ee1

            SHA256

            e0672c636962f7e0c8f342ea172c0a0a707add97b565633fa707225e1bbe6b17

            SHA512

            27c64ac29b05001162c1bb81b09211e83350a27a22b87da358ef4024990d9dc259b3cea28c9e075d9aee6daa3363ad79a8f5dd757b871d0cc5f118b184d7074d

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            57988fc12c286ec44715fa2d2b118357

            SHA1

            ff6858563f69ef3766ad16bad2b7928f52cdaab7

            SHA256

            2cd76f180749e67ce8c0cda3a70f505900780532b7820d0bdd15279ad21579bd

            SHA512

            a8c9cedf7d1a34087365bfdfa50fa2727a246f59c444efc3e2c91ec8175ab46aafe015b5044262113af5b64a65645a3668054ac5bafac44f19a7e2f00cc29f87

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            57988fc12c286ec44715fa2d2b118357

            SHA1

            ff6858563f69ef3766ad16bad2b7928f52cdaab7

            SHA256

            2cd76f180749e67ce8c0cda3a70f505900780532b7820d0bdd15279ad21579bd

            SHA512

            a8c9cedf7d1a34087365bfdfa50fa2727a246f59c444efc3e2c91ec8175ab46aafe015b5044262113af5b64a65645a3668054ac5bafac44f19a7e2f00cc29f87

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            e6910ec0236bb8f5e977f44c7a3a3b5e

            SHA1

            f88dc812417a3f681279d15e827e09701307025d

            SHA256

            faddb11265a343beb764d61da21a88542f920073de90095f5d35ae7141b7e38a

            SHA512

            3630f49526f55a48de2cfa4fec693f03625d7d6a191397b49a8405bc25b1ba9f47bee99095e33556d4580a0eeb945767b62b203fa66ce4e54bc5b649626e9c3c

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6f4ac8b52f3eb1077329d1d77039e40f

            SHA1

            8661ac5b263c0e20253a18fec1342f8494fda8b7

            SHA256

            c38873ad6f780df1f27aecda72192bb8088b274587636eec61940f836e1afdef

            SHA512

            9739e3aa5ecc05fb9f1eac6e10a97ec403de2b6d085f03f85ffd24000c50c93de6398a5d4595ac1638db4fc68541c4e5d21d125d130f1ff3505f25452561feff

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            f7f8c40dc94dc5695545088b8b1f378d

            SHA1

            e402691e2717605cfd8c0564d2bb199868d37bd3

            SHA256

            bf2fccfbc9a911dc9aeb8fd38eacd970435ef73ac10c6017b9858b76f6324624

            SHA512

            3fe1e1aeb587373bd99c8da00cdf5ed0dc145c8cf1d31e6ab73c90dfb902e0bb5196b0d3d0746b811b2395b53fb8bbd0e85726e5713009b737ad5f9b5511fad0

          • memory/820-61-0x0000000000000000-mapping.dmp

          • memory/824-58-0x0000000000000000-mapping.dmp

          • memory/876-77-0x0000000000000000-mapping.dmp

          • memory/980-59-0x0000000000000000-mapping.dmp

          • memory/1060-62-0x0000000000000000-mapping.dmp

          • memory/1180-81-0x0000000000000000-mapping.dmp

          • memory/1208-54-0x0000000075D01000-0x0000000075D03000-memory.dmp

            Filesize

            8KB

          • memory/1208-75-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1208-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1208-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1712-70-0x0000000000000000-mapping.dmp

          • memory/1776-82-0x0000000000000000-mapping.dmp

          • memory/1884-88-0x0000000000000000-mapping.dmp

          • memory/1976-87-0x0000000000000000-mapping.dmp

          • memory/1984-64-0x0000000000000000-mapping.dmp