Analysis

  • max time kernel
    31s
  • 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 10:26

General

  • Target

    4bffd7e7f8c2747615332645e1d9c12dd8e577312133737411faec598c34b96f.exe

  • Size

    602KB

  • MD5

    a1d25be08e82d6e58a4afc496a5b8dfe

  • SHA1

    767389abe905dbe883aff8d3ea731d1936b1dc47

  • SHA256

    4bffd7e7f8c2747615332645e1d9c12dd8e577312133737411faec598c34b96f

  • SHA512

    296c641e99a3e99f09972c80c41f072e6d4f42f3ad06a74af7bc4c6605ed997db0724aa271ec6ca2a231298a2afe6a10765775428407f3104ff22fa77ba440c2

  • SSDEEP

    12288:eIny5DYTgO4Brf+c4kX//mR2AnS+uFIKsNVLBRScs35a2OwXd:AUTgOmnAS+44NVLBRI5tOwN

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\4bffd7e7f8c2747615332645e1d9c12dd8e577312133737411faec598c34b96f.exe
    "C:\Users\Admin\AppData\Local\Temp\4bffd7e7f8c2747615332645e1d9c12dd8e577312133737411faec598c34b96f.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:1072
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:560
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1536
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1756
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1500
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1744
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1616
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1016
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1372
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1468
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2044
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1100
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:472
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1464

          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

            c371709233247abc520dc9f24af1d391

            SHA1

            4717380d67a5aed1d93b59e995850cf2cb1bd325

            SHA256

            e673c06dab43010d289f4759c4c96549cfa52e530a01224a63e0df7ddb6b5fdb

            SHA512

            ed44dfda527fa9973f1fa72db83b7efc989119fea88ac2f75de66cee73df1bf51a6810bb74ae5a7d634b4254590af99a6167ee0f51802255b632318fca5f12e5

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

            241KB

            MD5

            931e392d47cc89ae32582c888eddabba

            SHA1

            91618782282cb8caa2a4f79c4ebc14b795cb0163

            SHA256

            d96beb79d9c6d6097c34cb87ca7a5af0598a3abf5273f800a810e240b447a42b

            SHA512

            15d8bf6a426336048ac60eefe16b3fd20bb1473221d0edc04cd46e56f9e76ea04cafed9c9e52315d6ffdd4e0ff0629073926779de848e785eb576bb8ac1f7d61

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

            108KB

            MD5

            be053ba1b03a5019302bb4dd33f7d332

            SHA1

            ed2702a4ff319d60c9c85135020bbd802c13c1b3

            SHA256

            6092a61d3d5c53ac02c41fc49a83aaf9650a3c2ab9f03518b56d57e0b34c9b3f

            SHA512

            a3f909d1b36e31f2f9809c7028314636f67c0b40411187d2970c07a683622fa0ee012c046e36438f01377558caa795fdd819edf62c42e084503338c4acd79c47

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

            176KB

            MD5

            51ae3d069f61a5d67e6caaebdb6b3624

            SHA1

            a67f5eba782461c9ff4932e07518ee85529bdf6b

            SHA256

            d54ff2ae84fd4a9692e693879b653c5bf003970b11d1478ac86ae5e28ed29b75

            SHA512

            88c6ccf6354abd84df4311f10de9f5f58d08ef5b8782157558cdf6f04b2f971b2c396545b480c5174c51f23483f2abf73d8b5cf43ef9ac2eac54cd22eb9d696f

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

            176KB

            MD5

            51ae3d069f61a5d67e6caaebdb6b3624

            SHA1

            a67f5eba782461c9ff4932e07518ee85529bdf6b

            SHA256

            d54ff2ae84fd4a9692e693879b653c5bf003970b11d1478ac86ae5e28ed29b75

            SHA512

            88c6ccf6354abd84df4311f10de9f5f58d08ef5b8782157558cdf6f04b2f971b2c396545b480c5174c51f23483f2abf73d8b5cf43ef9ac2eac54cd22eb9d696f

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

            159KB

            MD5

            386ed0b3aea4dee4b1e9555acc1e95b7

            SHA1

            3dab34520cdbe1b05e8c71203cd5b8668de76ae6

            SHA256

            691982ef0c42c1f795073750a7f4855e1cd5d566cbf63a796bfc8b2cdac24ace

            SHA512

            b0f001225ddf2e002baaf961fe4cb832d6b0e3e25b796c093ce32696c8cb1d57bda2e98370d9de7a799f93e01122892032d64bab57c51919717e4d5cf39a82b7

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

            159KB

            MD5

            386ed0b3aea4dee4b1e9555acc1e95b7

            SHA1

            3dab34520cdbe1b05e8c71203cd5b8668de76ae6

            SHA256

            691982ef0c42c1f795073750a7f4855e1cd5d566cbf63a796bfc8b2cdac24ace

            SHA512

            b0f001225ddf2e002baaf961fe4cb832d6b0e3e25b796c093ce32696c8cb1d57bda2e98370d9de7a799f93e01122892032d64bab57c51919717e4d5cf39a82b7

          • \Users\Admin\AppData\Local\Temp\nsd3F73.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd3F73.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd3F73.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd3F73.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd3F73.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c371709233247abc520dc9f24af1d391

            SHA1

            4717380d67a5aed1d93b59e995850cf2cb1bd325

            SHA256

            e673c06dab43010d289f4759c4c96549cfa52e530a01224a63e0df7ddb6b5fdb

            SHA512

            ed44dfda527fa9973f1fa72db83b7efc989119fea88ac2f75de66cee73df1bf51a6810bb74ae5a7d634b4254590af99a6167ee0f51802255b632318fca5f12e5

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c371709233247abc520dc9f24af1d391

            SHA1

            4717380d67a5aed1d93b59e995850cf2cb1bd325

            SHA256

            e673c06dab43010d289f4759c4c96549cfa52e530a01224a63e0df7ddb6b5fdb

            SHA512

            ed44dfda527fa9973f1fa72db83b7efc989119fea88ac2f75de66cee73df1bf51a6810bb74ae5a7d634b4254590af99a6167ee0f51802255b632318fca5f12e5

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c371709233247abc520dc9f24af1d391

            SHA1

            4717380d67a5aed1d93b59e995850cf2cb1bd325

            SHA256

            e673c06dab43010d289f4759c4c96549cfa52e530a01224a63e0df7ddb6b5fdb

            SHA512

            ed44dfda527fa9973f1fa72db83b7efc989119fea88ac2f75de66cee73df1bf51a6810bb74ae5a7d634b4254590af99a6167ee0f51802255b632318fca5f12e5

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            931e392d47cc89ae32582c888eddabba

            SHA1

            91618782282cb8caa2a4f79c4ebc14b795cb0163

            SHA256

            d96beb79d9c6d6097c34cb87ca7a5af0598a3abf5273f800a810e240b447a42b

            SHA512

            15d8bf6a426336048ac60eefe16b3fd20bb1473221d0edc04cd46e56f9e76ea04cafed9c9e52315d6ffdd4e0ff0629073926779de848e785eb576bb8ac1f7d61

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            931e392d47cc89ae32582c888eddabba

            SHA1

            91618782282cb8caa2a4f79c4ebc14b795cb0163

            SHA256

            d96beb79d9c6d6097c34cb87ca7a5af0598a3abf5273f800a810e240b447a42b

            SHA512

            15d8bf6a426336048ac60eefe16b3fd20bb1473221d0edc04cd46e56f9e76ea04cafed9c9e52315d6ffdd4e0ff0629073926779de848e785eb576bb8ac1f7d61

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            be053ba1b03a5019302bb4dd33f7d332

            SHA1

            ed2702a4ff319d60c9c85135020bbd802c13c1b3

            SHA256

            6092a61d3d5c53ac02c41fc49a83aaf9650a3c2ab9f03518b56d57e0b34c9b3f

            SHA512

            a3f909d1b36e31f2f9809c7028314636f67c0b40411187d2970c07a683622fa0ee012c046e36438f01377558caa795fdd819edf62c42e084503338c4acd79c47

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            51ae3d069f61a5d67e6caaebdb6b3624

            SHA1

            a67f5eba782461c9ff4932e07518ee85529bdf6b

            SHA256

            d54ff2ae84fd4a9692e693879b653c5bf003970b11d1478ac86ae5e28ed29b75

            SHA512

            88c6ccf6354abd84df4311f10de9f5f58d08ef5b8782157558cdf6f04b2f971b2c396545b480c5174c51f23483f2abf73d8b5cf43ef9ac2eac54cd22eb9d696f

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            386ed0b3aea4dee4b1e9555acc1e95b7

            SHA1

            3dab34520cdbe1b05e8c71203cd5b8668de76ae6

            SHA256

            691982ef0c42c1f795073750a7f4855e1cd5d566cbf63a796bfc8b2cdac24ace

            SHA512

            b0f001225ddf2e002baaf961fe4cb832d6b0e3e25b796c093ce32696c8cb1d57bda2e98370d9de7a799f93e01122892032d64bab57c51919717e4d5cf39a82b7

          • memory/560-58-0x0000000000000000-mapping.dmp
          • memory/1016-76-0x0000000000000000-mapping.dmp
          • memory/1072-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1072-55-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1072-54-0x0000000075A81000-0x0000000075A83000-memory.dmp
            Filesize

            8KB

          • memory/1100-87-0x0000000000000000-mapping.dmp
          • memory/1372-80-0x0000000000000000-mapping.dmp
          • memory/1468-81-0x0000000000000000-mapping.dmp
          • memory/1500-62-0x0000000000000000-mapping.dmp
          • memory/1536-59-0x0000000000000000-mapping.dmp
          • memory/1616-70-0x0000000000000000-mapping.dmp
          • memory/1744-64-0x0000000000000000-mapping.dmp
          • memory/1756-61-0x0000000000000000-mapping.dmp
          • memory/2044-86-0x0000000000000000-mapping.dmp