Analysis

  • max time kernel
    91s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:28

General

  • Target

    3c044b2d0dd8b596903395225ee11726f6da168935155f28a1c487b78f81d8c3.exe

  • Size

    601KB

  • MD5

    985a4a517d36bb8537233d503729950d

  • SHA1

    40d0d681dad9b5ea584cca2bd8f4738ab9dbfd02

  • SHA256

    3c044b2d0dd8b596903395225ee11726f6da168935155f28a1c487b78f81d8c3

  • SHA512

    290e390aaea4312c5becec61ee0733daef80ff27accd2922c407ce69f72b848eaa972bce84a8adb73c5adcd631cd770f68d5a45b7f5b085a35f3a9efef2ac272

  • SSDEEP

    12288:sIny5DYT5IEH4FJM0pW9q108p/3YJaT+TxDi6lhwDDkzWcifUP2:qUT5zH4F6ciqJYnF/hMIzWcicP2

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3c044b2d0dd8b596903395225ee11726f6da168935155f28a1c487b78f81d8c3.exe
    "C:\Users\Admin\AppData\Local\Temp\3c044b2d0dd8b596903395225ee11726f6da168935155f28a1c487b78f81d8c3.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:4952
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1804
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4876
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1256
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3308
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2284
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:220
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:936
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2504
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2360
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1832
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4728
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:4604
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4684

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsvBC71.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsvBC71.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsvBC71.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsvBC71.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsvBC71.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsvBC71.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsvBC71.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsvBC71.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsvBC71.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0f6e8bb4fe7f3ae4b143b15bcd8a3bde

            SHA1

            4dfc003e197d4333400ac9c39fa2a3e7059d81b3

            SHA256

            e9a8e3e782ea05cd685e1dd745c1d5ed8b52bcfec9f5027c47a5d436cba78796

            SHA512

            a955e85ea997b0a5b6fe3a7d8b0bd286796c9a37862a457247ce6d0a4550d5901e09ad48d9352ed1511fc458df6e8719c528316eff18041cd9814ad79a951404

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0f6e8bb4fe7f3ae4b143b15bcd8a3bde

            SHA1

            4dfc003e197d4333400ac9c39fa2a3e7059d81b3

            SHA256

            e9a8e3e782ea05cd685e1dd745c1d5ed8b52bcfec9f5027c47a5d436cba78796

            SHA512

            a955e85ea997b0a5b6fe3a7d8b0bd286796c9a37862a457247ce6d0a4550d5901e09ad48d9352ed1511fc458df6e8719c528316eff18041cd9814ad79a951404

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0f6e8bb4fe7f3ae4b143b15bcd8a3bde

            SHA1

            4dfc003e197d4333400ac9c39fa2a3e7059d81b3

            SHA256

            e9a8e3e782ea05cd685e1dd745c1d5ed8b52bcfec9f5027c47a5d436cba78796

            SHA512

            a955e85ea997b0a5b6fe3a7d8b0bd286796c9a37862a457247ce6d0a4550d5901e09ad48d9352ed1511fc458df6e8719c528316eff18041cd9814ad79a951404

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            0f6e8bb4fe7f3ae4b143b15bcd8a3bde

            SHA1

            4dfc003e197d4333400ac9c39fa2a3e7059d81b3

            SHA256

            e9a8e3e782ea05cd685e1dd745c1d5ed8b52bcfec9f5027c47a5d436cba78796

            SHA512

            a955e85ea997b0a5b6fe3a7d8b0bd286796c9a37862a457247ce6d0a4550d5901e09ad48d9352ed1511fc458df6e8719c528316eff18041cd9814ad79a951404

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            527b619363c42b4a160abbeb3b9fd9ad

            SHA1

            e2831f997a5bdb6b8d9826c5c413b3f74d55ea59

            SHA256

            8573befdeda62ee2657903eedcf678439acb2296da9a87ea0dcf0967527a6489

            SHA512

            d86f665340ec6644b4231d41e547440497a44f5040798c14062fb365af720bc834294f9547594607a54e67bf24d55ae5cf379a4520b72dd0376437c1fbfa934a

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            527b619363c42b4a160abbeb3b9fd9ad

            SHA1

            e2831f997a5bdb6b8d9826c5c413b3f74d55ea59

            SHA256

            8573befdeda62ee2657903eedcf678439acb2296da9a87ea0dcf0967527a6489

            SHA512

            d86f665340ec6644b4231d41e547440497a44f5040798c14062fb365af720bc834294f9547594607a54e67bf24d55ae5cf379a4520b72dd0376437c1fbfa934a

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            527b619363c42b4a160abbeb3b9fd9ad

            SHA1

            e2831f997a5bdb6b8d9826c5c413b3f74d55ea59

            SHA256

            8573befdeda62ee2657903eedcf678439acb2296da9a87ea0dcf0967527a6489

            SHA512

            d86f665340ec6644b4231d41e547440497a44f5040798c14062fb365af720bc834294f9547594607a54e67bf24d55ae5cf379a4520b72dd0376437c1fbfa934a

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            9c0001aa449bc4208a937b0dbed8bb85

            SHA1

            c23b6c4cb36ec2b6210ae407e712f7ddbec0c10b

            SHA256

            d19f57a11ba6d6046384ea49984def9785426b5bba569e7db73570b6189d6e0a

            SHA512

            a6bdd596dd1edf4269c41ab690b6241ac7a36d98bbc898df005e775275ec06b725cf9f073b03b8aa312d0bc08b70c2396a16d8cbb1a255b7357efe216648cb45

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            9c0001aa449bc4208a937b0dbed8bb85

            SHA1

            c23b6c4cb36ec2b6210ae407e712f7ddbec0c10b

            SHA256

            d19f57a11ba6d6046384ea49984def9785426b5bba569e7db73570b6189d6e0a

            SHA512

            a6bdd596dd1edf4269c41ab690b6241ac7a36d98bbc898df005e775275ec06b725cf9f073b03b8aa312d0bc08b70c2396a16d8cbb1a255b7357efe216648cb45

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            cbf0cc1ba00c4fc8e14d2c75f89cd2b0

            SHA1

            eba411408bef8bc37811c88fadaa6421eefdd1a2

            SHA256

            40e49a5114e292a4f063571695eb23f300a046fb1f76136347f70279cd2dc975

            SHA512

            28384178d4252859b2134e76de2fbf7ec95cbd123626715548ee90ecf1b7745c3b37bd5e4aa96e7621752c3a87d684d3ba9d94af2d2a3fffb94c1ffcaf103f29

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            cbf0cc1ba00c4fc8e14d2c75f89cd2b0

            SHA1

            eba411408bef8bc37811c88fadaa6421eefdd1a2

            SHA256

            40e49a5114e292a4f063571695eb23f300a046fb1f76136347f70279cd2dc975

            SHA512

            28384178d4252859b2134e76de2fbf7ec95cbd123626715548ee90ecf1b7745c3b37bd5e4aa96e7621752c3a87d684d3ba9d94af2d2a3fffb94c1ffcaf103f29

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            cbf0cc1ba00c4fc8e14d2c75f89cd2b0

            SHA1

            eba411408bef8bc37811c88fadaa6421eefdd1a2

            SHA256

            40e49a5114e292a4f063571695eb23f300a046fb1f76136347f70279cd2dc975

            SHA512

            28384178d4252859b2134e76de2fbf7ec95cbd123626715548ee90ecf1b7745c3b37bd5e4aa96e7621752c3a87d684d3ba9d94af2d2a3fffb94c1ffcaf103f29

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2489688eab9f64200c4874e1c340573a

            SHA1

            3dadf46078c9278a97fa78b15622511fd1c83b36

            SHA256

            4ecdc4198750ce74f5699449171285e9773c2beb39c204581bce4420e05058a3

            SHA512

            d5d5f135fb65676646a68723b5bb0836589643b20afd2430785d6d469ceeea8ef2a482d963c53a7dda10f035034141def2913783b9df7ceb7133bcfaa36324a8

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2489688eab9f64200c4874e1c340573a

            SHA1

            3dadf46078c9278a97fa78b15622511fd1c83b36

            SHA256

            4ecdc4198750ce74f5699449171285e9773c2beb39c204581bce4420e05058a3

            SHA512

            d5d5f135fb65676646a68723b5bb0836589643b20afd2430785d6d469ceeea8ef2a482d963c53a7dda10f035034141def2913783b9df7ceb7133bcfaa36324a8

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2489688eab9f64200c4874e1c340573a

            SHA1

            3dadf46078c9278a97fa78b15622511fd1c83b36

            SHA256

            4ecdc4198750ce74f5699449171285e9773c2beb39c204581bce4420e05058a3

            SHA512

            d5d5f135fb65676646a68723b5bb0836589643b20afd2430785d6d469ceeea8ef2a482d963c53a7dda10f035034141def2913783b9df7ceb7133bcfaa36324a8

          • memory/220-147-0x0000000000000000-mapping.dmp

          • memory/936-153-0x0000000000000000-mapping.dmp

          • memory/1256-140-0x0000000000000000-mapping.dmp

          • memory/1804-136-0x0000000000000000-mapping.dmp

          • memory/1832-165-0x0000000000000000-mapping.dmp

          • memory/2284-142-0x0000000000000000-mapping.dmp

          • memory/2360-159-0x0000000000000000-mapping.dmp

          • memory/2504-158-0x0000000000000000-mapping.dmp

          • memory/3308-141-0x0000000000000000-mapping.dmp

          • memory/4728-166-0x0000000000000000-mapping.dmp

          • memory/4876-137-0x0000000000000000-mapping.dmp

          • memory/4952-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4952-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB