Analysis

  • max time kernel
    80s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:53

General

  • Target

    b044437f1a7d8f3559addaa9bc366adbe88a828116080bd698483c16ce42a3bd.exe

  • Size

    447KB

  • MD5

    8870e6b213066567b43344e47cab915b

  • SHA1

    ea04b39caa8c9a0bc09330062b250d085fe2922c

  • SHA256

    b044437f1a7d8f3559addaa9bc366adbe88a828116080bd698483c16ce42a3bd

  • SHA512

    01cacdd19b2ed611ca6b3f06b95cec5ab84bb35de84a0f2871189915a8bd32d1fe01d318d110d53ccb9ed40661d0df39e9ce9653d0e4095cb2759ebe0a8853c1

  • SSDEEP

    12288:E0TXk5+eH9O5nTtYdwi4QGSqm2Kr8WEuDWgov/UWCoXFayih5:EQ6tuTtYdd4ZSqKEuKgFboXFalh5

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\b044437f1a7d8f3559addaa9bc366adbe88a828116080bd698483c16ce42a3bd.exe
    "C:\Users\Admin\AppData\Local\Temp\b044437f1a7d8f3559addaa9bc366adbe88a828116080bd698483c16ce42a3bd.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:1552
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1608
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1000
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:652
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1324
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:668
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1624
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1524
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:812
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1048
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:828
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1056
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1428
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1212

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e206eba8a297155b4ad6995f5b5e29f5

            SHA1

            b2b9074ce6bff03cf957533b455e8e2b3e68ae7f

            SHA256

            93f3d3fb34dc6ec7c9cb65cbb393db870a74f30d457c090fbbcf7bdccbb93f3e

            SHA512

            a70511d5bf037f6c54e9f6fba1b2ee54d5ebd9eda0b1638e448a23363970b0e18193311e8c92e479ed2943b15770d4fa5cc97163ad036ba9a11d62f5ceebe9e1

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            be5242227f9679c0035e29c7f04ac844

            SHA1

            adf0ee3a17939ba7b96e7a1e2ce9e8fbae109921

            SHA256

            af1f43e432d00a70e48fb940830770cc59c4558a15a45de48ff63c43af9b7025

            SHA512

            fec3ddf51335081f57ab2aae9e1e41f662b232263ded591746644c3e22be0fd4f331c59766e297afd2ba7b247b9c3abc4a7d58590e7558765cd78766eb5594ea

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f516638171203fbf201ca4faef988edd

            SHA1

            40dba7d2efa07f99eab685a3dcd08c7ccd35538e

            SHA256

            9129d2540ab059684907b8e4b7fcb6e30bbf3cdab3c1939488f22743eb85c2b3

            SHA512

            e3641e0fe907e94a3cbbd6a0d18f3a0a6426ee416b1f20b29f9cb6e63b9e3edefdcc001edef7361cae606893a6adc2cdc5792d7887e44eb7dde221b22e186782

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9fbfaddd92788420c3296d53bb837cc7

            SHA1

            bf01bf66b186e2b0ac76eb34bd4d022c5713ae9d

            SHA256

            55089164923bd763cb964e03e5d7caa38d02c06a4c0fbf7f0ca8d42627d1e44b

            SHA512

            b5692374b15241bbce74eadb6079de4f4519da58d66e801ea8e2c5182cf81263a62d9be7929f8f3d59ad4125a5496d1112e7c108fc4aea9d98661e934fd2cb2c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9fbfaddd92788420c3296d53bb837cc7

            SHA1

            bf01bf66b186e2b0ac76eb34bd4d022c5713ae9d

            SHA256

            55089164923bd763cb964e03e5d7caa38d02c06a4c0fbf7f0ca8d42627d1e44b

            SHA512

            b5692374b15241bbce74eadb6079de4f4519da58d66e801ea8e2c5182cf81263a62d9be7929f8f3d59ad4125a5496d1112e7c108fc4aea9d98661e934fd2cb2c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            adf7859aa831df2647a648f1ecaac034

            SHA1

            446081bfe5ab649c0ae472fdb16e24a4d052694b

            SHA256

            f611b4cff1355d244a8aadc182cb01065480f7cb0a499831deabaa60a615bd5a

            SHA512

            5790554d56b2b5baea443cc159a97933205dc2a817c4d79d2989ab1f15c36b986d9acd7acf78300592b90c0d2deb48a2d0c98186ee42b360dbb0d118bdf4e05c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            adf7859aa831df2647a648f1ecaac034

            SHA1

            446081bfe5ab649c0ae472fdb16e24a4d052694b

            SHA256

            f611b4cff1355d244a8aadc182cb01065480f7cb0a499831deabaa60a615bd5a

            SHA512

            5790554d56b2b5baea443cc159a97933205dc2a817c4d79d2989ab1f15c36b986d9acd7acf78300592b90c0d2deb48a2d0c98186ee42b360dbb0d118bdf4e05c

          • \Users\Admin\AppData\Local\Temp\nse9A40.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nse9A40.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nse9A40.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nse9A40.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nse9A40.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e206eba8a297155b4ad6995f5b5e29f5

            SHA1

            b2b9074ce6bff03cf957533b455e8e2b3e68ae7f

            SHA256

            93f3d3fb34dc6ec7c9cb65cbb393db870a74f30d457c090fbbcf7bdccbb93f3e

            SHA512

            a70511d5bf037f6c54e9f6fba1b2ee54d5ebd9eda0b1638e448a23363970b0e18193311e8c92e479ed2943b15770d4fa5cc97163ad036ba9a11d62f5ceebe9e1

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e206eba8a297155b4ad6995f5b5e29f5

            SHA1

            b2b9074ce6bff03cf957533b455e8e2b3e68ae7f

            SHA256

            93f3d3fb34dc6ec7c9cb65cbb393db870a74f30d457c090fbbcf7bdccbb93f3e

            SHA512

            a70511d5bf037f6c54e9f6fba1b2ee54d5ebd9eda0b1638e448a23363970b0e18193311e8c92e479ed2943b15770d4fa5cc97163ad036ba9a11d62f5ceebe9e1

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e206eba8a297155b4ad6995f5b5e29f5

            SHA1

            b2b9074ce6bff03cf957533b455e8e2b3e68ae7f

            SHA256

            93f3d3fb34dc6ec7c9cb65cbb393db870a74f30d457c090fbbcf7bdccbb93f3e

            SHA512

            a70511d5bf037f6c54e9f6fba1b2ee54d5ebd9eda0b1638e448a23363970b0e18193311e8c92e479ed2943b15770d4fa5cc97163ad036ba9a11d62f5ceebe9e1

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            be5242227f9679c0035e29c7f04ac844

            SHA1

            adf0ee3a17939ba7b96e7a1e2ce9e8fbae109921

            SHA256

            af1f43e432d00a70e48fb940830770cc59c4558a15a45de48ff63c43af9b7025

            SHA512

            fec3ddf51335081f57ab2aae9e1e41f662b232263ded591746644c3e22be0fd4f331c59766e297afd2ba7b247b9c3abc4a7d58590e7558765cd78766eb5594ea

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            be5242227f9679c0035e29c7f04ac844

            SHA1

            adf0ee3a17939ba7b96e7a1e2ce9e8fbae109921

            SHA256

            af1f43e432d00a70e48fb940830770cc59c4558a15a45de48ff63c43af9b7025

            SHA512

            fec3ddf51335081f57ab2aae9e1e41f662b232263ded591746644c3e22be0fd4f331c59766e297afd2ba7b247b9c3abc4a7d58590e7558765cd78766eb5594ea

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f516638171203fbf201ca4faef988edd

            SHA1

            40dba7d2efa07f99eab685a3dcd08c7ccd35538e

            SHA256

            9129d2540ab059684907b8e4b7fcb6e30bbf3cdab3c1939488f22743eb85c2b3

            SHA512

            e3641e0fe907e94a3cbbd6a0d18f3a0a6426ee416b1f20b29f9cb6e63b9e3edefdcc001edef7361cae606893a6adc2cdc5792d7887e44eb7dde221b22e186782

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9fbfaddd92788420c3296d53bb837cc7

            SHA1

            bf01bf66b186e2b0ac76eb34bd4d022c5713ae9d

            SHA256

            55089164923bd763cb964e03e5d7caa38d02c06a4c0fbf7f0ca8d42627d1e44b

            SHA512

            b5692374b15241bbce74eadb6079de4f4519da58d66e801ea8e2c5182cf81263a62d9be7929f8f3d59ad4125a5496d1112e7c108fc4aea9d98661e934fd2cb2c

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            adf7859aa831df2647a648f1ecaac034

            SHA1

            446081bfe5ab649c0ae472fdb16e24a4d052694b

            SHA256

            f611b4cff1355d244a8aadc182cb01065480f7cb0a499831deabaa60a615bd5a

            SHA512

            5790554d56b2b5baea443cc159a97933205dc2a817c4d79d2989ab1f15c36b986d9acd7acf78300592b90c0d2deb48a2d0c98186ee42b360dbb0d118bdf4e05c

          • memory/652-60-0x0000000000000000-mapping.dmp

          • memory/668-63-0x0000000000000000-mapping.dmp

          • memory/812-79-0x0000000000000000-mapping.dmp

          • memory/828-85-0x0000000000000000-mapping.dmp

          • memory/1000-58-0x0000000000000000-mapping.dmp

          • memory/1048-80-0x0000000000000000-mapping.dmp

          • memory/1056-86-0x0000000000000000-mapping.dmp

          • memory/1324-61-0x0000000000000000-mapping.dmp

          • memory/1524-75-0x0000000000000000-mapping.dmp

          • memory/1552-54-0x0000000075C81000-0x0000000075C83000-memory.dmp

            Filesize

            8KB

          • memory/1608-57-0x0000000000000000-mapping.dmp

          • memory/1624-69-0x0000000000000000-mapping.dmp