Analysis

  • max time kernel
    91s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:17

General

  • Target

    a03b770fa1d34e746978d995bf887a731ff4d523b6cb0d9eff15831839593c11.exe

  • Size

    602KB

  • MD5

    3936acf8a912ce41698c09a80cb579ce

  • SHA1

    11320cd10b977e439eb1b13f3787abbf4286eb2e

  • SHA256

    a03b770fa1d34e746978d995bf887a731ff4d523b6cb0d9eff15831839593c11

  • SHA512

    1e5753fe897cbcc1a342d59911b6c3b20f7e39704a85560fc38e61eaca06e3cee06225283a6ab705911c7caf37695d0e6329c6b3cade030fae0dc59a6c10dca4

  • SSDEEP

    12288:IIny5DYTcI2MvKp0QYuMRL3I1so30cRUCG6VCvIwFT:GUTcJMvKpdce30eUCbyIwV

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\a03b770fa1d34e746978d995bf887a731ff4d523b6cb0d9eff15831839593c11.exe
    "C:\Users\Admin\AppData\Local\Temp\a03b770fa1d34e746978d995bf887a731ff4d523b6cb0d9eff15831839593c11.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:4512
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2148
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4708
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4904
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4964
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1720
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3560
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:208
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:3232
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:488
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1192
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3484
          • 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:3636
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1248

          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:\Users\Admin\AppData\Local\Temp\nseF96A.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nseF96A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nseF96A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nseF96A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nseF96A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nseF96A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nseF96A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nseF96A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nseF96A.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

            106KB

            MD5

            0947099e72f06e63d88e70bea824a63a

            SHA1

            1267e43e81a873e6e826242653e3b9cf52398ea0

            SHA256

            423a1d4381fc1d68fb7ad243ea471014259c8b7482e26508dcb8a7c34c919ca1

            SHA512

            1b5baed1385f44c01ec828e2e322ace08fb123c19ed55087062a8e997fd296dc1cddef2431fa5d563290b51116810b095d426a48b880d3d0dcdec51940f8f0d9

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

            106KB

            MD5

            0947099e72f06e63d88e70bea824a63a

            SHA1

            1267e43e81a873e6e826242653e3b9cf52398ea0

            SHA256

            423a1d4381fc1d68fb7ad243ea471014259c8b7482e26508dcb8a7c34c919ca1

            SHA512

            1b5baed1385f44c01ec828e2e322ace08fb123c19ed55087062a8e997fd296dc1cddef2431fa5d563290b51116810b095d426a48b880d3d0dcdec51940f8f0d9

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

            106KB

            MD5

            0947099e72f06e63d88e70bea824a63a

            SHA1

            1267e43e81a873e6e826242653e3b9cf52398ea0

            SHA256

            423a1d4381fc1d68fb7ad243ea471014259c8b7482e26508dcb8a7c34c919ca1

            SHA512

            1b5baed1385f44c01ec828e2e322ace08fb123c19ed55087062a8e997fd296dc1cddef2431fa5d563290b51116810b095d426a48b880d3d0dcdec51940f8f0d9

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

            106KB

            MD5

            0947099e72f06e63d88e70bea824a63a

            SHA1

            1267e43e81a873e6e826242653e3b9cf52398ea0

            SHA256

            423a1d4381fc1d68fb7ad243ea471014259c8b7482e26508dcb8a7c34c919ca1

            SHA512

            1b5baed1385f44c01ec828e2e322ace08fb123c19ed55087062a8e997fd296dc1cddef2431fa5d563290b51116810b095d426a48b880d3d0dcdec51940f8f0d9

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

            244KB

            MD5

            f5b3520aabc6b83b32374efa5508e81a

            SHA1

            db70c3fe122949384d9034aaefb232993c3fb37f

            SHA256

            db504bcae4370bab5986d62c9fa26c14998e8977c414b61d72aa6def1ea255e0

            SHA512

            915b0fcb8ff414b39e1ca2380f0cc440655755ffb8afc4efc9754c01fc90c6813e80db65533d2c127d81f7ad380cf07cf6cafaa188a85c0cd0855620c35c657f

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

            244KB

            MD5

            f5b3520aabc6b83b32374efa5508e81a

            SHA1

            db70c3fe122949384d9034aaefb232993c3fb37f

            SHA256

            db504bcae4370bab5986d62c9fa26c14998e8977c414b61d72aa6def1ea255e0

            SHA512

            915b0fcb8ff414b39e1ca2380f0cc440655755ffb8afc4efc9754c01fc90c6813e80db65533d2c127d81f7ad380cf07cf6cafaa188a85c0cd0855620c35c657f

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

            244KB

            MD5

            f5b3520aabc6b83b32374efa5508e81a

            SHA1

            db70c3fe122949384d9034aaefb232993c3fb37f

            SHA256

            db504bcae4370bab5986d62c9fa26c14998e8977c414b61d72aa6def1ea255e0

            SHA512

            915b0fcb8ff414b39e1ca2380f0cc440655755ffb8afc4efc9754c01fc90c6813e80db65533d2c127d81f7ad380cf07cf6cafaa188a85c0cd0855620c35c657f

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

            108KB

            MD5

            822046f72e67a2404d765b8b0ab1f3b3

            SHA1

            6016783ae6901989b7cbd1a4ec405d41017c302a

            SHA256

            6e1928d2427c4a9efdb657793d2c9d4069c344404a50bfb2ca9716cf3afce373

            SHA512

            fb4225b14100c2731584f9a4698fb55bbfe41234827f03fad5f0a5691b3c3269a9e245aea25695e57029e3c9cb946f565bbb916776474de9872e61977c05d1ba

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

            108KB

            MD5

            822046f72e67a2404d765b8b0ab1f3b3

            SHA1

            6016783ae6901989b7cbd1a4ec405d41017c302a

            SHA256

            6e1928d2427c4a9efdb657793d2c9d4069c344404a50bfb2ca9716cf3afce373

            SHA512

            fb4225b14100c2731584f9a4698fb55bbfe41234827f03fad5f0a5691b3c3269a9e245aea25695e57029e3c9cb946f565bbb916776474de9872e61977c05d1ba

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

            176KB

            MD5

            ef089a3bc1f6c39afed00bfce0a9c403

            SHA1

            d4724d7667c75bd499d717c2f57af439448d1c57

            SHA256

            274f2dda560a66241639b0bea36039b209e53bd446deabb85102b302e2693320

            SHA512

            b23c4af49199b5626d3c00629988b9b98f473fff8fc77957fc38f220f3dcc2f8869c0f728a311182a50c2f38d813cf846d11662d70abe6f25abde2a24d4a8e01

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

            176KB

            MD5

            ef089a3bc1f6c39afed00bfce0a9c403

            SHA1

            d4724d7667c75bd499d717c2f57af439448d1c57

            SHA256

            274f2dda560a66241639b0bea36039b209e53bd446deabb85102b302e2693320

            SHA512

            b23c4af49199b5626d3c00629988b9b98f473fff8fc77957fc38f220f3dcc2f8869c0f728a311182a50c2f38d813cf846d11662d70abe6f25abde2a24d4a8e01

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

            176KB

            MD5

            ef089a3bc1f6c39afed00bfce0a9c403

            SHA1

            d4724d7667c75bd499d717c2f57af439448d1c57

            SHA256

            274f2dda560a66241639b0bea36039b209e53bd446deabb85102b302e2693320

            SHA512

            b23c4af49199b5626d3c00629988b9b98f473fff8fc77957fc38f220f3dcc2f8869c0f728a311182a50c2f38d813cf846d11662d70abe6f25abde2a24d4a8e01

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

            158KB

            MD5

            4ef89c1e908911171108bb6235a5356e

            SHA1

            4f46f5f22fd5d4f147270f59ce7a1092e8a3f8da

            SHA256

            f7642d6ffc48b6f96986b0ae532ae4cf57868fe2278fcdf23140072ed2cecad5

            SHA512

            cee05a0e6ed463b027a9d9e26d777d5159b84aa4b76a1cbed480843ae4b4600c3137fc0a77babcead36a26867429489c34755526e6b72a01ee78059b4ec883a2

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

            158KB

            MD5

            4ef89c1e908911171108bb6235a5356e

            SHA1

            4f46f5f22fd5d4f147270f59ce7a1092e8a3f8da

            SHA256

            f7642d6ffc48b6f96986b0ae532ae4cf57868fe2278fcdf23140072ed2cecad5

            SHA512

            cee05a0e6ed463b027a9d9e26d777d5159b84aa4b76a1cbed480843ae4b4600c3137fc0a77babcead36a26867429489c34755526e6b72a01ee78059b4ec883a2

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

            158KB

            MD5

            4ef89c1e908911171108bb6235a5356e

            SHA1

            4f46f5f22fd5d4f147270f59ce7a1092e8a3f8da

            SHA256

            f7642d6ffc48b6f96986b0ae532ae4cf57868fe2278fcdf23140072ed2cecad5

            SHA512

            cee05a0e6ed463b027a9d9e26d777d5159b84aa4b76a1cbed480843ae4b4600c3137fc0a77babcead36a26867429489c34755526e6b72a01ee78059b4ec883a2

          • memory/208-153-0x0000000000000000-mapping.dmp
          • memory/488-159-0x0000000000000000-mapping.dmp
          • memory/1192-165-0x0000000000000000-mapping.dmp
          • memory/1720-142-0x0000000000000000-mapping.dmp
          • memory/2148-135-0x0000000000000000-mapping.dmp
          • memory/3232-158-0x0000000000000000-mapping.dmp
          • memory/3484-166-0x0000000000000000-mapping.dmp
          • memory/3560-147-0x0000000000000000-mapping.dmp
          • memory/4512-137-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/4512-168-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/4708-136-0x0000000000000000-mapping.dmp
          • memory/4904-140-0x0000000000000000-mapping.dmp
          • memory/4964-141-0x0000000000000000-mapping.dmp