Analysis

  • max time kernel
    40s
  • 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 10:19

General

  • Target

    8eff2b0395a14860312142408b764433943c1c8a468bf4655f0e913cb65da10d.exe

  • Size

    602KB

  • MD5

    91ab9503734f5b4779d2379cdc5434fe

  • SHA1

    0af2f870c035f3b568472c32f6b1cd867905b72f

  • SHA256

    8eff2b0395a14860312142408b764433943c1c8a468bf4655f0e913cb65da10d

  • SHA512

    562202191c6d39286f6ff9b06903aa9f2bd0fa04919bd7d07743a6a12172dad39cf33e0a0bcede96552391fc11a10f2a05616c5c9c00c7168751887a3b22ac8c

  • SSDEEP

    12288:YIny5DYTj7WVdU2WAG+aOspAQEK8tsKZOSzvOQMW4+F:2UTj7GpWAG+PspAQnRKZOSz2TW4+F

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\8eff2b0395a14860312142408b764433943c1c8a468bf4655f0e913cb65da10d.exe
    "C:\Users\Admin\AppData\Local\Temp\8eff2b0395a14860312142408b764433943c1c8a468bf4655f0e913cb65da10d.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:1500
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1920
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:936
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:112
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1744
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2012
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1016
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1352
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1944
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1328
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1280
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:996
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1800
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:472

          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

            9521375251e98a694b4fc14d7e97a0c8

            SHA1

            a96a36191e372a3e21e9aae89f6f8c4886309725

            SHA256

            bfe6678d3f79f19afaa9eaf7bda327f11a53b10efdc188e50adbcd238ebfe5d7

            SHA512

            ac1e5474bb7e7be7217fb81873905e74ef5dcd6b5dd1d1a828ef33e70d40bcb84563df2dc57b157dd8de2ba21c2c504976615b29fb070385569fa3e0ccc00687

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

            241KB

            MD5

            6db0c3a6381d1c742384d5812eefb970

            SHA1

            3d979ef2611014d12e3268342b151b1f487702e9

            SHA256

            a3e429c32c0fcaecc1287c522b5ee1ef243bf1fa70a1971c713a0442a46c1e3c

            SHA512

            86158c198bb54e6c7713551366a7503c1df7102337bb6aa67909a1988e3175a509bceab1e75e467c200641026a4fcdb1b3b350bec9d9f9eb4058b6068e32e2f1

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

            108KB

            MD5

            ad0ffeadd743ea1c78c02238ace9635f

            SHA1

            fd03e7283adfa58d8372148afd66b610eac8589d

            SHA256

            7e1b822884b9ebe71a19d15b1af530698e56cabe7674298a844e3c587b48f3f2

            SHA512

            ade20dc00dbbb0bcbb1e65d7fd95109a4c131b854c4c20122a97f7cfd37200ddb0112941d1e990fc036d486070ef75a0d1eb588718577d192aafccd795360feb

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

            176KB

            MD5

            2b4da54325c2129e722efc4b5f06143e

            SHA1

            7054cf89e2f428e0bc415637d455245f74b0255b

            SHA256

            c4cbf8e9df47ab013d0a8a6d27bca7b0b18f19a7653c921b748adfd254faba64

            SHA512

            7ae6bb4f1dc597fa45ef1082e16e66089e6c4cd9c24e229455ca6429c34205a5e165bf962a1386863ac0381437beef6cca08036cd19941a5c57202512d4d7242

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

            176KB

            MD5

            2b4da54325c2129e722efc4b5f06143e

            SHA1

            7054cf89e2f428e0bc415637d455245f74b0255b

            SHA256

            c4cbf8e9df47ab013d0a8a6d27bca7b0b18f19a7653c921b748adfd254faba64

            SHA512

            7ae6bb4f1dc597fa45ef1082e16e66089e6c4cd9c24e229455ca6429c34205a5e165bf962a1386863ac0381437beef6cca08036cd19941a5c57202512d4d7242

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

            158KB

            MD5

            b40cb83d98b55d9a20c0015923cc639e

            SHA1

            e2be0ca1e3c4cdff4aaf92d7d57c0ae72dec3cba

            SHA256

            762a1115a18174f87dd532e321ec7756092d45f550c8d15ac42186580acfc3ff

            SHA512

            54b0e777e89206c5fa5b5c7c0fcb3930836c7edaf6fae61db79b47a6b87dfdb356a97743801faea8262e787b838e0d5d96f469849d6e882517bfb6ef14851640

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

            158KB

            MD5

            b40cb83d98b55d9a20c0015923cc639e

            SHA1

            e2be0ca1e3c4cdff4aaf92d7d57c0ae72dec3cba

            SHA256

            762a1115a18174f87dd532e321ec7756092d45f550c8d15ac42186580acfc3ff

            SHA512

            54b0e777e89206c5fa5b5c7c0fcb3930836c7edaf6fae61db79b47a6b87dfdb356a97743801faea8262e787b838e0d5d96f469849d6e882517bfb6ef14851640

          • \Users\Admin\AppData\Local\Temp\nsj429F.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj429F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj429F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj429F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj429F.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            9521375251e98a694b4fc14d7e97a0c8

            SHA1

            a96a36191e372a3e21e9aae89f6f8c4886309725

            SHA256

            bfe6678d3f79f19afaa9eaf7bda327f11a53b10efdc188e50adbcd238ebfe5d7

            SHA512

            ac1e5474bb7e7be7217fb81873905e74ef5dcd6b5dd1d1a828ef33e70d40bcb84563df2dc57b157dd8de2ba21c2c504976615b29fb070385569fa3e0ccc00687

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            9521375251e98a694b4fc14d7e97a0c8

            SHA1

            a96a36191e372a3e21e9aae89f6f8c4886309725

            SHA256

            bfe6678d3f79f19afaa9eaf7bda327f11a53b10efdc188e50adbcd238ebfe5d7

            SHA512

            ac1e5474bb7e7be7217fb81873905e74ef5dcd6b5dd1d1a828ef33e70d40bcb84563df2dc57b157dd8de2ba21c2c504976615b29fb070385569fa3e0ccc00687

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            9521375251e98a694b4fc14d7e97a0c8

            SHA1

            a96a36191e372a3e21e9aae89f6f8c4886309725

            SHA256

            bfe6678d3f79f19afaa9eaf7bda327f11a53b10efdc188e50adbcd238ebfe5d7

            SHA512

            ac1e5474bb7e7be7217fb81873905e74ef5dcd6b5dd1d1a828ef33e70d40bcb84563df2dc57b157dd8de2ba21c2c504976615b29fb070385569fa3e0ccc00687

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            6db0c3a6381d1c742384d5812eefb970

            SHA1

            3d979ef2611014d12e3268342b151b1f487702e9

            SHA256

            a3e429c32c0fcaecc1287c522b5ee1ef243bf1fa70a1971c713a0442a46c1e3c

            SHA512

            86158c198bb54e6c7713551366a7503c1df7102337bb6aa67909a1988e3175a509bceab1e75e467c200641026a4fcdb1b3b350bec9d9f9eb4058b6068e32e2f1

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            6db0c3a6381d1c742384d5812eefb970

            SHA1

            3d979ef2611014d12e3268342b151b1f487702e9

            SHA256

            a3e429c32c0fcaecc1287c522b5ee1ef243bf1fa70a1971c713a0442a46c1e3c

            SHA512

            86158c198bb54e6c7713551366a7503c1df7102337bb6aa67909a1988e3175a509bceab1e75e467c200641026a4fcdb1b3b350bec9d9f9eb4058b6068e32e2f1

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            ad0ffeadd743ea1c78c02238ace9635f

            SHA1

            fd03e7283adfa58d8372148afd66b610eac8589d

            SHA256

            7e1b822884b9ebe71a19d15b1af530698e56cabe7674298a844e3c587b48f3f2

            SHA512

            ade20dc00dbbb0bcbb1e65d7fd95109a4c131b854c4c20122a97f7cfd37200ddb0112941d1e990fc036d486070ef75a0d1eb588718577d192aafccd795360feb

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            2b4da54325c2129e722efc4b5f06143e

            SHA1

            7054cf89e2f428e0bc415637d455245f74b0255b

            SHA256

            c4cbf8e9df47ab013d0a8a6d27bca7b0b18f19a7653c921b748adfd254faba64

            SHA512

            7ae6bb4f1dc597fa45ef1082e16e66089e6c4cd9c24e229455ca6429c34205a5e165bf962a1386863ac0381437beef6cca08036cd19941a5c57202512d4d7242

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            b40cb83d98b55d9a20c0015923cc639e

            SHA1

            e2be0ca1e3c4cdff4aaf92d7d57c0ae72dec3cba

            SHA256

            762a1115a18174f87dd532e321ec7756092d45f550c8d15ac42186580acfc3ff

            SHA512

            54b0e777e89206c5fa5b5c7c0fcb3930836c7edaf6fae61db79b47a6b87dfdb356a97743801faea8262e787b838e0d5d96f469849d6e882517bfb6ef14851640

          • memory/112-60-0x0000000000000000-mapping.dmp
          • memory/936-58-0x0000000000000000-mapping.dmp
          • memory/996-87-0x0000000000000000-mapping.dmp
          • memory/1016-70-0x0000000000000000-mapping.dmp
          • memory/1280-86-0x0000000000000000-mapping.dmp
          • memory/1328-81-0x0000000000000000-mapping.dmp
          • memory/1352-76-0x0000000000000000-mapping.dmp
          • memory/1500-62-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1500-54-0x0000000076201000-0x0000000076203000-memory.dmp
            Filesize

            8KB

          • memory/1500-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1744-61-0x0000000000000000-mapping.dmp
          • memory/1920-57-0x0000000000000000-mapping.dmp
          • memory/1944-80-0x0000000000000000-mapping.dmp
          • memory/2012-64-0x0000000000000000-mapping.dmp