Analysis

  • max time kernel
    39s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24/11/2022, 06:03

General

  • Target

    8bc605a0913ae12ccecd80fefc6cb650280ef26e9cb8d75e23bb9b761ee3308e.exe

  • Size

    696KB

  • MD5

    4aba4c5cbc2e63b760e3f13a705fc1f5

  • SHA1

    d34bb3246df889bcdd2c06cdd40be09e322729a0

  • SHA256

    8bc605a0913ae12ccecd80fefc6cb650280ef26e9cb8d75e23bb9b761ee3308e

  • SHA512

    5fd02bf37ca79989f19c7ec97e967ef10b76f08dea284fbf8b652780ec950e98c4b2875dba4705bb522d696a7ada3d255763d8bfb7420d0f6c952ee2b8870eb1

  • SSDEEP

    12288:sAbu3fQ+thk6Ez4bfsCwFqVqCAjdT/D+YsjH8XCAr0Ub2RTLqXatyH6nSKNtZi:sAbuPPEzMfeaqlacSQ8oQSKJi

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\8bc605a0913ae12ccecd80fefc6cb650280ef26e9cb8d75e23bb9b761ee3308e.exe
    "C:\Users\Admin\AppData\Local\Temp\8bc605a0913ae12ccecd80fefc6cb650280ef26e9cb8d75e23bb9b761ee3308e.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:1976
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:904
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:112
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1468
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1440
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:836
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:268
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1564
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1940
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1992
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:756
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1436
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1404
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1208

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                • C:\Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  1bd13d7693909c3c97856de63439df24

                  SHA1

                  c80c35822637720cda6b62e980a241a887815e5f

                  SHA256

                  1249ec9e259353dd09b2a9c4abe38ddb515d674e0aaf57e64bca48e7cd7d460d

                  SHA512

                  cd6ec44fca7644cda432ef1b6b07e9e3d9b9237937f963cfea42539a7862e3a3336927e288849217f9fd3f77a4040e03e6278282157fa9dc71add03de162c4a2

                • C:\Windows\SysWOW64\hfpapi.dll

                  Filesize

                  244KB

                  MD5

                  59e01c9d732663e7515ce7aee358c330

                  SHA1

                  e3efdcc8ac3b20b0e27fff851b623358c78ee48c

                  SHA256

                  8662990b4e8ab74e6e2fd61d20865a25d91b9b9c3bfbeedeff4d5012a46dd13d

                  SHA512

                  72a6a68a8bc4f0dcce8492a74e903a17d00c1615ad897379c906bd34f11696801e2ca3c4c497efced0a101d6477746e0df9bcf897a331284af7bf36b3220c7c6

                • C:\Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  7e7d4d49d7d94e1f90a8ff4651e8101c

                  SHA1

                  b4641b67e07935ed8b140d7f80b35d044cb0d2f5

                  SHA256

                  cebac47c2530fd7b46017b3f573f6d77b58b17aa651e113b0a4818217bfd17e2

                  SHA512

                  8420b96eda5e43ce91eed679798453da7be94b31c032bcd2863581a362154bfe6f80690554e9f807e2992619236215f0b25a43dd00b0888f7c26a1bb09900ff9

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  6c2686c83887934eaeef5c1f3078de47

                  SHA1

                  04082b340825bba037fa0fbb7780e5e0d39bd2ce

                  SHA256

                  b41d39aae111e83b9a3041bbcfdd07da50d44511358cb08f607f1714c258d9d5

                  SHA512

                  5494ce381f732c03917de5141bcb954491c5ef73bbdbc02594141ce36d6929cd25df37d9843a162ef5df8bb57248846e35dfb2a4156b02f5e5a3d439a636312d

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  6c2686c83887934eaeef5c1f3078de47

                  SHA1

                  04082b340825bba037fa0fbb7780e5e0d39bd2ce

                  SHA256

                  b41d39aae111e83b9a3041bbcfdd07da50d44511358cb08f607f1714c258d9d5

                  SHA512

                  5494ce381f732c03917de5141bcb954491c5ef73bbdbc02594141ce36d6929cd25df37d9843a162ef5df8bb57248846e35dfb2a4156b02f5e5a3d439a636312d

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  bc494f54b63441ae04084999c32d6003

                  SHA1

                  67edfbc8e5615c368cce0a521aca87c080e6779c

                  SHA256

                  724290c216d6c13f385edce612c937be79c0730de39ee2933b57fb0468d72c17

                  SHA512

                  d3290ecb63086dc9cdf5abf36fff5dc44f5c77c4d31fe19467aa895be6ec94125a0874541589f34e164df930c498636d6f6f4cbf71feb568a415b8636620e26b

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  bc494f54b63441ae04084999c32d6003

                  SHA1

                  67edfbc8e5615c368cce0a521aca87c080e6779c

                  SHA256

                  724290c216d6c13f385edce612c937be79c0730de39ee2933b57fb0468d72c17

                  SHA512

                  d3290ecb63086dc9cdf5abf36fff5dc44f5c77c4d31fe19467aa895be6ec94125a0874541589f34e164df930c498636d6f6f4cbf71feb568a415b8636620e26b

                • \Users\Admin\AppData\Local\Temp\nst5D11.tmp\System.dll

                  Filesize

                  11KB

                  MD5

                  c17103ae9072a06da581dec998343fc1

                  SHA1

                  b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

                  SHA256

                  dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

                  SHA512

                  d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

                • \Users\Admin\AppData\Local\Temp\nst5D11.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nst5D11.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nst5D11.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nst5D11.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  1bd13d7693909c3c97856de63439df24

                  SHA1

                  c80c35822637720cda6b62e980a241a887815e5f

                  SHA256

                  1249ec9e259353dd09b2a9c4abe38ddb515d674e0aaf57e64bca48e7cd7d460d

                  SHA512

                  cd6ec44fca7644cda432ef1b6b07e9e3d9b9237937f963cfea42539a7862e3a3336927e288849217f9fd3f77a4040e03e6278282157fa9dc71add03de162c4a2

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  1bd13d7693909c3c97856de63439df24

                  SHA1

                  c80c35822637720cda6b62e980a241a887815e5f

                  SHA256

                  1249ec9e259353dd09b2a9c4abe38ddb515d674e0aaf57e64bca48e7cd7d460d

                  SHA512

                  cd6ec44fca7644cda432ef1b6b07e9e3d9b9237937f963cfea42539a7862e3a3336927e288849217f9fd3f77a4040e03e6278282157fa9dc71add03de162c4a2

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  1bd13d7693909c3c97856de63439df24

                  SHA1

                  c80c35822637720cda6b62e980a241a887815e5f

                  SHA256

                  1249ec9e259353dd09b2a9c4abe38ddb515d674e0aaf57e64bca48e7cd7d460d

                  SHA512

                  cd6ec44fca7644cda432ef1b6b07e9e3d9b9237937f963cfea42539a7862e3a3336927e288849217f9fd3f77a4040e03e6278282157fa9dc71add03de162c4a2

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  244KB

                  MD5

                  59e01c9d732663e7515ce7aee358c330

                  SHA1

                  e3efdcc8ac3b20b0e27fff851b623358c78ee48c

                  SHA256

                  8662990b4e8ab74e6e2fd61d20865a25d91b9b9c3bfbeedeff4d5012a46dd13d

                  SHA512

                  72a6a68a8bc4f0dcce8492a74e903a17d00c1615ad897379c906bd34f11696801e2ca3c4c497efced0a101d6477746e0df9bcf897a331284af7bf36b3220c7c6

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  244KB

                  MD5

                  59e01c9d732663e7515ce7aee358c330

                  SHA1

                  e3efdcc8ac3b20b0e27fff851b623358c78ee48c

                  SHA256

                  8662990b4e8ab74e6e2fd61d20865a25d91b9b9c3bfbeedeff4d5012a46dd13d

                  SHA512

                  72a6a68a8bc4f0dcce8492a74e903a17d00c1615ad897379c906bd34f11696801e2ca3c4c497efced0a101d6477746e0df9bcf897a331284af7bf36b3220c7c6

                • \Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  7e7d4d49d7d94e1f90a8ff4651e8101c

                  SHA1

                  b4641b67e07935ed8b140d7f80b35d044cb0d2f5

                  SHA256

                  cebac47c2530fd7b46017b3f573f6d77b58b17aa651e113b0a4818217bfd17e2

                  SHA512

                  8420b96eda5e43ce91eed679798453da7be94b31c032bcd2863581a362154bfe6f80690554e9f807e2992619236215f0b25a43dd00b0888f7c26a1bb09900ff9

                • \Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  6c2686c83887934eaeef5c1f3078de47

                  SHA1

                  04082b340825bba037fa0fbb7780e5e0d39bd2ce

                  SHA256

                  b41d39aae111e83b9a3041bbcfdd07da50d44511358cb08f607f1714c258d9d5

                  SHA512

                  5494ce381f732c03917de5141bcb954491c5ef73bbdbc02594141ce36d6929cd25df37d9843a162ef5df8bb57248846e35dfb2a4156b02f5e5a3d439a636312d

                • \Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  bc494f54b63441ae04084999c32d6003

                  SHA1

                  67edfbc8e5615c368cce0a521aca87c080e6779c

                  SHA256

                  724290c216d6c13f385edce612c937be79c0730de39ee2933b57fb0468d72c17

                  SHA512

                  d3290ecb63086dc9cdf5abf36fff5dc44f5c77c4d31fe19467aa895be6ec94125a0874541589f34e164df930c498636d6f6f4cbf71feb568a415b8636620e26b

                • memory/1976-54-0x0000000074D81000-0x0000000074D83000-memory.dmp

                  Filesize

                  8KB

                • memory/1976-55-0x0000000000340000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.5MB

                • memory/1976-90-0x0000000000340000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.5MB