Analysis

  • max time kernel
    60s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:27

General

  • Target

    42fee09bd90d4b4dcbd05be5983e9e86a9ea526a452ac574259dd38fd1218740.exe

  • Size

    602KB

  • MD5

    43b843aff16ddbca3bed77c3443a7888

  • SHA1

    c577c8a438256963935432d6818abf28f11e2b58

  • SHA256

    42fee09bd90d4b4dcbd05be5983e9e86a9ea526a452ac574259dd38fd1218740

  • SHA512

    e529bb700d28929150721659d4e90b2e0e58502c753c0d1bc8244f757f064a92aa710d8e030e874d59ac848947361da7e74ddc81e4cc20f840342e3e16482446

  • SSDEEP

    6144:C6sFuai9ny5DYTBZopRQGRwOF+kNdGGl0TmHe8O290z/Qbt8IvHxe1Y+aghVkDCD:sIny5DYTMjTpoZIn8GxeXKunKkJcPy

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\42fee09bd90d4b4dcbd05be5983e9e86a9ea526a452ac574259dd38fd1218740.exe
    "C:\Users\Admin\AppData\Local\Temp\42fee09bd90d4b4dcbd05be5983e9e86a9ea526a452ac574259dd38fd1218740.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:1992
    • 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:668
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1496
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1248
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:912
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1032
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1872
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1816
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:564
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1344
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:948
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1472
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1704

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            12124abd6267bc1144ac36efd7df2083

            SHA1

            5c7ce0b94f28c7e6026e489eaae0c1837e4261e7

            SHA256

            574ee28b9d5cbaf6dc2497fcc74b514e3b08ecd83e55d03087c944cf0da65dd3

            SHA512

            dfb46c8f0fb94a4baefc3600fc2ba1594edee656e6c28afa193729077630373cbad33a39a6ea9c37c323abea0ac1ecfe60e5936df4af96e5309eb057e454609b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ecaa42d992289777bd458828e851be9d

            SHA1

            8f9f50a6a8106785d4c74a7de902b0fb459f5f5a

            SHA256

            10184a1da2a7a6a855dd1d5a8fc0a42beb2706e26696c01ee879f3551f4f24f8

            SHA512

            e39a7bf4ec1bd950ecfe2187da197cc5fefe0e96fc01f5b600ed86ab1a257b990511c690b53c53a3e94ba8d4ed1290c6156821583e4e177c9eff4b25f9bc37e0

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            5b6f0eeedf0d49bafaa590f87cd009bc

            SHA1

            830e1e42b3855cc5fc9e032533a8a1fa01985d4a

            SHA256

            555b33fe2a695889bd08a5ef0f5fca5ad4f4262f418334687fea46b8b1ea5c01

            SHA512

            9b6b6f38deed9e9194c5d0c2106756419482158946dfe4c5f7a99a19c2a098e97b9a95dee9e247f2f25e8789d415c05cc3e0f1f0b813fd4df1e040cfbe66006f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            65c01e06731740557dc3399740df54b1

            SHA1

            1e52146ba35f4e778ba048b8f62808e4b0e21989

            SHA256

            793ed25bd124b7a2f469400dd6200288f1ee62cec610941b58203d00c9877f85

            SHA512

            62233f6037ecc57b111ee86522405c79145bf26d56d092300358329ce21f76648cf93163dce23530a64d9e1e3c67be63a290b2f62c8a806fe6df63e49ce74ae0

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            65c01e06731740557dc3399740df54b1

            SHA1

            1e52146ba35f4e778ba048b8f62808e4b0e21989

            SHA256

            793ed25bd124b7a2f469400dd6200288f1ee62cec610941b58203d00c9877f85

            SHA512

            62233f6037ecc57b111ee86522405c79145bf26d56d092300358329ce21f76648cf93163dce23530a64d9e1e3c67be63a290b2f62c8a806fe6df63e49ce74ae0

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            fe03e85625c9592cae8c3668b83c726a

            SHA1

            74ff401376e84c39bfcee6c1717bf6b08d712cc4

            SHA256

            5668d57437b1465e754acbdd35052f68461c97b205a0feab758f9f3f84d46a89

            SHA512

            a9e84afad9d236e4098e8f095578aa3115736498ac5daf631ad0f09d3ea2b40edc7f9936b0e9fc965b32d3730fb811b244743bbd18156e60d95e5a9ddc548f1b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            fe03e85625c9592cae8c3668b83c726a

            SHA1

            74ff401376e84c39bfcee6c1717bf6b08d712cc4

            SHA256

            5668d57437b1465e754acbdd35052f68461c97b205a0feab758f9f3f84d46a89

            SHA512

            a9e84afad9d236e4098e8f095578aa3115736498ac5daf631ad0f09d3ea2b40edc7f9936b0e9fc965b32d3730fb811b244743bbd18156e60d95e5a9ddc548f1b

          • \Users\Admin\AppData\Local\Temp\nsyFF96.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyFF96.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFF96.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFF96.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFF96.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            12124abd6267bc1144ac36efd7df2083

            SHA1

            5c7ce0b94f28c7e6026e489eaae0c1837e4261e7

            SHA256

            574ee28b9d5cbaf6dc2497fcc74b514e3b08ecd83e55d03087c944cf0da65dd3

            SHA512

            dfb46c8f0fb94a4baefc3600fc2ba1594edee656e6c28afa193729077630373cbad33a39a6ea9c37c323abea0ac1ecfe60e5936df4af96e5309eb057e454609b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            12124abd6267bc1144ac36efd7df2083

            SHA1

            5c7ce0b94f28c7e6026e489eaae0c1837e4261e7

            SHA256

            574ee28b9d5cbaf6dc2497fcc74b514e3b08ecd83e55d03087c944cf0da65dd3

            SHA512

            dfb46c8f0fb94a4baefc3600fc2ba1594edee656e6c28afa193729077630373cbad33a39a6ea9c37c323abea0ac1ecfe60e5936df4af96e5309eb057e454609b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            12124abd6267bc1144ac36efd7df2083

            SHA1

            5c7ce0b94f28c7e6026e489eaae0c1837e4261e7

            SHA256

            574ee28b9d5cbaf6dc2497fcc74b514e3b08ecd83e55d03087c944cf0da65dd3

            SHA512

            dfb46c8f0fb94a4baefc3600fc2ba1594edee656e6c28afa193729077630373cbad33a39a6ea9c37c323abea0ac1ecfe60e5936df4af96e5309eb057e454609b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ecaa42d992289777bd458828e851be9d

            SHA1

            8f9f50a6a8106785d4c74a7de902b0fb459f5f5a

            SHA256

            10184a1da2a7a6a855dd1d5a8fc0a42beb2706e26696c01ee879f3551f4f24f8

            SHA512

            e39a7bf4ec1bd950ecfe2187da197cc5fefe0e96fc01f5b600ed86ab1a257b990511c690b53c53a3e94ba8d4ed1290c6156821583e4e177c9eff4b25f9bc37e0

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ecaa42d992289777bd458828e851be9d

            SHA1

            8f9f50a6a8106785d4c74a7de902b0fb459f5f5a

            SHA256

            10184a1da2a7a6a855dd1d5a8fc0a42beb2706e26696c01ee879f3551f4f24f8

            SHA512

            e39a7bf4ec1bd950ecfe2187da197cc5fefe0e96fc01f5b600ed86ab1a257b990511c690b53c53a3e94ba8d4ed1290c6156821583e4e177c9eff4b25f9bc37e0

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            5b6f0eeedf0d49bafaa590f87cd009bc

            SHA1

            830e1e42b3855cc5fc9e032533a8a1fa01985d4a

            SHA256

            555b33fe2a695889bd08a5ef0f5fca5ad4f4262f418334687fea46b8b1ea5c01

            SHA512

            9b6b6f38deed9e9194c5d0c2106756419482158946dfe4c5f7a99a19c2a098e97b9a95dee9e247f2f25e8789d415c05cc3e0f1f0b813fd4df1e040cfbe66006f

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            65c01e06731740557dc3399740df54b1

            SHA1

            1e52146ba35f4e778ba048b8f62808e4b0e21989

            SHA256

            793ed25bd124b7a2f469400dd6200288f1ee62cec610941b58203d00c9877f85

            SHA512

            62233f6037ecc57b111ee86522405c79145bf26d56d092300358329ce21f76648cf93163dce23530a64d9e1e3c67be63a290b2f62c8a806fe6df63e49ce74ae0

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            fe03e85625c9592cae8c3668b83c726a

            SHA1

            74ff401376e84c39bfcee6c1717bf6b08d712cc4

            SHA256

            5668d57437b1465e754acbdd35052f68461c97b205a0feab758f9f3f84d46a89

            SHA512

            a9e84afad9d236e4098e8f095578aa3115736498ac5daf631ad0f09d3ea2b40edc7f9936b0e9fc965b32d3730fb811b244743bbd18156e60d95e5a9ddc548f1b

          • memory/560-57-0x0000000000000000-mapping.dmp

          • memory/564-81-0x0000000000000000-mapping.dmp

          • memory/668-58-0x0000000000000000-mapping.dmp

          • memory/912-64-0x0000000000000000-mapping.dmp

          • memory/948-87-0x0000000000000000-mapping.dmp

          • memory/1032-70-0x0000000000000000-mapping.dmp

          • memory/1248-61-0x0000000000000000-mapping.dmp

          • memory/1344-86-0x0000000000000000-mapping.dmp

          • memory/1496-60-0x0000000000000000-mapping.dmp

          • memory/1816-80-0x0000000000000000-mapping.dmp

          • memory/1872-76-0x0000000000000000-mapping.dmp

          • memory/1992-54-0x00000000760B1000-0x00000000760B3000-memory.dmp

            Filesize

            8KB

          • memory/1992-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1992-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB