Analysis

  • max time kernel
    67s
  • 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

    a92d25bb80dff7da3017be40e0d69c91f5c39bcd115de698786f4949a6ec8ce9.exe

  • Size

    446KB

  • MD5

    9ad87a486530c7b823994becbad5119f

  • SHA1

    bd29a2ef1204ddf8f2b586ab3051148c930be900

  • SHA256

    a92d25bb80dff7da3017be40e0d69c91f5c39bcd115de698786f4949a6ec8ce9

  • SHA512

    bd117d8856d858ba72a3ee9ddb29e8510dbf676e7d2451704538c74b428a18c91e5eb7868bcc53fbafbd7116b677be3c7bb68803d5ddf9ac2761a1886aae49ec

  • SSDEEP

    12288:C9/Ngrid2hO2IxQqvdr6SMOa2yHMAxff/fTfk1pIZ:Ckrc29GgOlysAZnfT81pY

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\a92d25bb80dff7da3017be40e0d69c91f5c39bcd115de698786f4949a6ec8ce9.exe
    "C:\Users\Admin\AppData\Local\Temp\a92d25bb80dff7da3017be40e0d69c91f5c39bcd115de698786f4949a6ec8ce9.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:2040
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2004
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:728
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:680
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:584
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:760
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1572
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:928
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:276
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1408
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:548
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1772
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1496
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1988

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            acc0709acea05b49bea8c79f16e9ef39

            SHA1

            051df751e88831ef7b2f379a8467be068e671715

            SHA256

            df83b034b7e734e6f27e22bdd849071904637cc7f1e2ba6d21851c5edebe0f97

            SHA512

            115cb0d19612fa2280b4468c607e93328f524259cfb90daa7c67c5229e848e09aedbfbfff235aa2236942e7aeb4f7a559744cefd7b8266e2277e1023c9f2469d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            a33df5cf7f294673de19efc48637ab2f

            SHA1

            e6e454a9292d76fba8e3687c62bfe3fa5fd6cb05

            SHA256

            43ef3819af571a0d83893b214977d9bf71da7be249fe87631774cd4b7eb23a32

            SHA512

            292a80216ba28ed229e11036b3067f1ab7e0d0db0e2f30ca08d3f010c7c4d8f0bd609970037a5fa62c8fb910e153c7d1bd999f1c5623fd4f8c5a64bbc4e1d809

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            503c31f2be060457fa139fd37b502c57

            SHA1

            9723570362d21db012b1e7082146591ff92f6f03

            SHA256

            71ada06f25cfa4f92a0ae5a1395bc4bbb114127b65b980087c1fdcc3a639ac81

            SHA512

            52be1771015dfe4b09843f32caccf2d8a8ab7d8ba927b057c86303f2eee17cc5e29e881672e6e856c1a6432dd788736e9e659ed728ccf4395c04363863588b92

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            44929cf7c58c43956b3b71c3b84375d2

            SHA1

            c34d0a592b55b87da569e4e9a4f0671f61443c6d

            SHA256

            9f7951e9cc65fafde104987e94332e2ef1511efca596c9812bb2f97666245ce2

            SHA512

            cca3fff389e3d67bba799c2b9243c071115ac3e4fbeab2173ba3fa9a09de2b610d57bf5c19f87584b3b23e95d9fbdb9e8245659ddc8f8bd8d7832fcf94ae27ce

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            44929cf7c58c43956b3b71c3b84375d2

            SHA1

            c34d0a592b55b87da569e4e9a4f0671f61443c6d

            SHA256

            9f7951e9cc65fafde104987e94332e2ef1511efca596c9812bb2f97666245ce2

            SHA512

            cca3fff389e3d67bba799c2b9243c071115ac3e4fbeab2173ba3fa9a09de2b610d57bf5c19f87584b3b23e95d9fbdb9e8245659ddc8f8bd8d7832fcf94ae27ce

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            5454fdb4115ce436fb332ac516f5f07f

            SHA1

            557fa13a808c20e35e9c6aa422c17add48fc1db4

            SHA256

            4fa46c3e68652343cc91136793f507f196949840687682c908756e67e8dd6061

            SHA512

            18744baf390575da889483529fba51393d6b2552fbf71fbbc8beddaac84a6bca1f106883a33630c8f88af9dd25a40302eacccd3c999b45eb561b1798b71aad0b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            5454fdb4115ce436fb332ac516f5f07f

            SHA1

            557fa13a808c20e35e9c6aa422c17add48fc1db4

            SHA256

            4fa46c3e68652343cc91136793f507f196949840687682c908756e67e8dd6061

            SHA512

            18744baf390575da889483529fba51393d6b2552fbf71fbbc8beddaac84a6bca1f106883a33630c8f88af9dd25a40302eacccd3c999b45eb561b1798b71aad0b

          • \Users\Admin\AppData\Local\Temp\nsoEA52.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsoEA52.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoEA52.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoEA52.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoEA52.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            acc0709acea05b49bea8c79f16e9ef39

            SHA1

            051df751e88831ef7b2f379a8467be068e671715

            SHA256

            df83b034b7e734e6f27e22bdd849071904637cc7f1e2ba6d21851c5edebe0f97

            SHA512

            115cb0d19612fa2280b4468c607e93328f524259cfb90daa7c67c5229e848e09aedbfbfff235aa2236942e7aeb4f7a559744cefd7b8266e2277e1023c9f2469d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            acc0709acea05b49bea8c79f16e9ef39

            SHA1

            051df751e88831ef7b2f379a8467be068e671715

            SHA256

            df83b034b7e734e6f27e22bdd849071904637cc7f1e2ba6d21851c5edebe0f97

            SHA512

            115cb0d19612fa2280b4468c607e93328f524259cfb90daa7c67c5229e848e09aedbfbfff235aa2236942e7aeb4f7a559744cefd7b8266e2277e1023c9f2469d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            acc0709acea05b49bea8c79f16e9ef39

            SHA1

            051df751e88831ef7b2f379a8467be068e671715

            SHA256

            df83b034b7e734e6f27e22bdd849071904637cc7f1e2ba6d21851c5edebe0f97

            SHA512

            115cb0d19612fa2280b4468c607e93328f524259cfb90daa7c67c5229e848e09aedbfbfff235aa2236942e7aeb4f7a559744cefd7b8266e2277e1023c9f2469d

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            a33df5cf7f294673de19efc48637ab2f

            SHA1

            e6e454a9292d76fba8e3687c62bfe3fa5fd6cb05

            SHA256

            43ef3819af571a0d83893b214977d9bf71da7be249fe87631774cd4b7eb23a32

            SHA512

            292a80216ba28ed229e11036b3067f1ab7e0d0db0e2f30ca08d3f010c7c4d8f0bd609970037a5fa62c8fb910e153c7d1bd999f1c5623fd4f8c5a64bbc4e1d809

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            a33df5cf7f294673de19efc48637ab2f

            SHA1

            e6e454a9292d76fba8e3687c62bfe3fa5fd6cb05

            SHA256

            43ef3819af571a0d83893b214977d9bf71da7be249fe87631774cd4b7eb23a32

            SHA512

            292a80216ba28ed229e11036b3067f1ab7e0d0db0e2f30ca08d3f010c7c4d8f0bd609970037a5fa62c8fb910e153c7d1bd999f1c5623fd4f8c5a64bbc4e1d809

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            503c31f2be060457fa139fd37b502c57

            SHA1

            9723570362d21db012b1e7082146591ff92f6f03

            SHA256

            71ada06f25cfa4f92a0ae5a1395bc4bbb114127b65b980087c1fdcc3a639ac81

            SHA512

            52be1771015dfe4b09843f32caccf2d8a8ab7d8ba927b057c86303f2eee17cc5e29e881672e6e856c1a6432dd788736e9e659ed728ccf4395c04363863588b92

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            44929cf7c58c43956b3b71c3b84375d2

            SHA1

            c34d0a592b55b87da569e4e9a4f0671f61443c6d

            SHA256

            9f7951e9cc65fafde104987e94332e2ef1511efca596c9812bb2f97666245ce2

            SHA512

            cca3fff389e3d67bba799c2b9243c071115ac3e4fbeab2173ba3fa9a09de2b610d57bf5c19f87584b3b23e95d9fbdb9e8245659ddc8f8bd8d7832fcf94ae27ce

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            5454fdb4115ce436fb332ac516f5f07f

            SHA1

            557fa13a808c20e35e9c6aa422c17add48fc1db4

            SHA256

            4fa46c3e68652343cc91136793f507f196949840687682c908756e67e8dd6061

            SHA512

            18744baf390575da889483529fba51393d6b2552fbf71fbbc8beddaac84a6bca1f106883a33630c8f88af9dd25a40302eacccd3c999b45eb561b1798b71aad0b

          • memory/276-79-0x0000000000000000-mapping.dmp

          • memory/548-85-0x0000000000000000-mapping.dmp

          • memory/584-61-0x0000000000000000-mapping.dmp

          • memory/680-60-0x0000000000000000-mapping.dmp

          • memory/728-58-0x0000000000000000-mapping.dmp

          • memory/760-63-0x0000000000000000-mapping.dmp

          • memory/928-75-0x0000000000000000-mapping.dmp

          • memory/1408-80-0x0000000000000000-mapping.dmp

          • memory/1572-69-0x0000000000000000-mapping.dmp

          • memory/1772-86-0x0000000000000000-mapping.dmp

          • memory/2004-57-0x0000000000000000-mapping.dmp

          • memory/2040-54-0x0000000076411000-0x0000000076413000-memory.dmp

            Filesize

            8KB