Analysis

  • max time kernel
    22s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    22/11/2022, 00:29

General

  • Target

    64336b25f92d9739726375bdc16eea131c64673319bc4539e157dc6915feb27b.exe

  • Size

    446KB

  • MD5

    b486c174545966ccb33cdb3a9bf4e3f8

  • SHA1

    688600fb78090377b5bdc4c229cad8da79817032

  • SHA256

    64336b25f92d9739726375bdc16eea131c64673319bc4539e157dc6915feb27b

  • SHA512

    4504f51411dbaed7a83ef7c51b2973b645568244e7698ffee3b788a0c32bbae1cfa8f004c2fe5e5fa64157f927a28b50e3f58ddcae2bc518d9927e05e72e9de7

  • SSDEEP

    12288:aicvqaMhNYf/xtVPP6YBw4puP8tUBGDk3VA3PhJDQ:aic3Vb15CnPP0GAfLQ

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\64336b25f92d9739726375bdc16eea131c64673319bc4539e157dc6915feb27b.exe
    "C:\Users\Admin\AppData\Local\Temp\64336b25f92d9739726375bdc16eea131c64673319bc4539e157dc6915feb27b.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:1924
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1364
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1080
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1340
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1140
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:680
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:840
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:604
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2040
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:872
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1644
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1536
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1960
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:960

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • C:\Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  38689de36b842db873378b9e30ff9b60

                  SHA1

                  96b8870fe9b07da77a32a986d07f344946f56fbd

                  SHA256

                  43d337107dc5bb37b158838f6be78377e45c1c6f17801ba9f02a93c0baa846a5

                  SHA512

                  964dd595a2fb0669d33c75d991570c325c1b333ba4f4d7959f2a1a8ce16fabef790a821a68f39b5c33f6ad021f0e75bb7d1f7a06967cf016982365e7a36936d6

                • C:\Windows\SysWOW64\hfpapi.dll

                  Filesize

                  244KB

                  MD5

                  4a724f96e09f3a0fa8e859cd4a9dc217

                  SHA1

                  8ff78a99488678bde96404288914ef8beaf0ab3e

                  SHA256

                  cf45299f3162ce058edf36c8b8ffb703924c86a1beff79812a594104dbb74aa2

                  SHA512

                  55a63fb5109603c7cb294ab4f647528fbbd79ab77120baaa1711ef9a0f5907d3896224302e133acb3311ad6f39557fdeb6747f467756aaa8cd71fd26c487cb2d

                • C:\Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  9ecad5ba132a439a2f28c331abdd012d

                  SHA1

                  0e28b3a79de87a1eda56c491e4eb4ca7c6df5eee

                  SHA256

                  7d8e3829232697c3d5d9c17df0b8df6a987af2d63d38f68b77eafbb26bfc393d

                  SHA512

                  6911338e144fd9a0fb5aea4876c40140164f37d0559fbf0a90c2e0ff4f566446a1e342be68baf18f680730a157db38ad83c8e10498ee892bc03b70b2daf2b675

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  58f5c4a4e0e4bf4cc049e1c1a47dc305

                  SHA1

                  49e7eae15130f09cd92522494f328870c7f14620

                  SHA256

                  d822365ec8ed1d1feace1f580c92afdd78c077bec525efb01724898392bba7ad

                  SHA512

                  d76b0b8b776bbbecf9bce43133b80b2329fc618d4f6f3575c141bda202179b530b619107b1b68fe0f08a995b0b27a8e0677a721c27ce1e388a90488330435f59

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  58f5c4a4e0e4bf4cc049e1c1a47dc305

                  SHA1

                  49e7eae15130f09cd92522494f328870c7f14620

                  SHA256

                  d822365ec8ed1d1feace1f580c92afdd78c077bec525efb01724898392bba7ad

                  SHA512

                  d76b0b8b776bbbecf9bce43133b80b2329fc618d4f6f3575c141bda202179b530b619107b1b68fe0f08a995b0b27a8e0677a721c27ce1e388a90488330435f59

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  c75e38d628f1e1f3abcf1c9efb73749f

                  SHA1

                  5eb758e74df4d94f305df4f0e141b7161a3b432c

                  SHA256

                  0e3a837116ab4baf59662ee6d92d7246fc25652e3468e7ed16d281e3d552dca0

                  SHA512

                  b5f4dc7a3320608b68434073552c2148fa838e677160e70c58e2b4b2f4e9691d6dfdfc743ad1fab80cd19e3ad67b47feec5f32e4e198b1090b4eee6a78269e27

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  c75e38d628f1e1f3abcf1c9efb73749f

                  SHA1

                  5eb758e74df4d94f305df4f0e141b7161a3b432c

                  SHA256

                  0e3a837116ab4baf59662ee6d92d7246fc25652e3468e7ed16d281e3d552dca0

                  SHA512

                  b5f4dc7a3320608b68434073552c2148fa838e677160e70c58e2b4b2f4e9691d6dfdfc743ad1fab80cd19e3ad67b47feec5f32e4e198b1090b4eee6a78269e27

                • \Users\Admin\AppData\Local\Temp\nsj2E35.tmp\System.dll

                  Filesize

                  11KB

                  MD5

                  c17103ae9072a06da581dec998343fc1

                  SHA1

                  b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

                  SHA256

                  dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

                  SHA512

                  d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

                • \Users\Admin\AppData\Local\Temp\nsj2E35.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nsj2E35.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nsj2E35.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nsj2E35.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  38689de36b842db873378b9e30ff9b60

                  SHA1

                  96b8870fe9b07da77a32a986d07f344946f56fbd

                  SHA256

                  43d337107dc5bb37b158838f6be78377e45c1c6f17801ba9f02a93c0baa846a5

                  SHA512

                  964dd595a2fb0669d33c75d991570c325c1b333ba4f4d7959f2a1a8ce16fabef790a821a68f39b5c33f6ad021f0e75bb7d1f7a06967cf016982365e7a36936d6

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  38689de36b842db873378b9e30ff9b60

                  SHA1

                  96b8870fe9b07da77a32a986d07f344946f56fbd

                  SHA256

                  43d337107dc5bb37b158838f6be78377e45c1c6f17801ba9f02a93c0baa846a5

                  SHA512

                  964dd595a2fb0669d33c75d991570c325c1b333ba4f4d7959f2a1a8ce16fabef790a821a68f39b5c33f6ad021f0e75bb7d1f7a06967cf016982365e7a36936d6

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  38689de36b842db873378b9e30ff9b60

                  SHA1

                  96b8870fe9b07da77a32a986d07f344946f56fbd

                  SHA256

                  43d337107dc5bb37b158838f6be78377e45c1c6f17801ba9f02a93c0baa846a5

                  SHA512

                  964dd595a2fb0669d33c75d991570c325c1b333ba4f4d7959f2a1a8ce16fabef790a821a68f39b5c33f6ad021f0e75bb7d1f7a06967cf016982365e7a36936d6

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  244KB

                  MD5

                  4a724f96e09f3a0fa8e859cd4a9dc217

                  SHA1

                  8ff78a99488678bde96404288914ef8beaf0ab3e

                  SHA256

                  cf45299f3162ce058edf36c8b8ffb703924c86a1beff79812a594104dbb74aa2

                  SHA512

                  55a63fb5109603c7cb294ab4f647528fbbd79ab77120baaa1711ef9a0f5907d3896224302e133acb3311ad6f39557fdeb6747f467756aaa8cd71fd26c487cb2d

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  244KB

                  MD5

                  4a724f96e09f3a0fa8e859cd4a9dc217

                  SHA1

                  8ff78a99488678bde96404288914ef8beaf0ab3e

                  SHA256

                  cf45299f3162ce058edf36c8b8ffb703924c86a1beff79812a594104dbb74aa2

                  SHA512

                  55a63fb5109603c7cb294ab4f647528fbbd79ab77120baaa1711ef9a0f5907d3896224302e133acb3311ad6f39557fdeb6747f467756aaa8cd71fd26c487cb2d

                • \Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  9ecad5ba132a439a2f28c331abdd012d

                  SHA1

                  0e28b3a79de87a1eda56c491e4eb4ca7c6df5eee

                  SHA256

                  7d8e3829232697c3d5d9c17df0b8df6a987af2d63d38f68b77eafbb26bfc393d

                  SHA512

                  6911338e144fd9a0fb5aea4876c40140164f37d0559fbf0a90c2e0ff4f566446a1e342be68baf18f680730a157db38ad83c8e10498ee892bc03b70b2daf2b675

                • \Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  58f5c4a4e0e4bf4cc049e1c1a47dc305

                  SHA1

                  49e7eae15130f09cd92522494f328870c7f14620

                  SHA256

                  d822365ec8ed1d1feace1f580c92afdd78c077bec525efb01724898392bba7ad

                  SHA512

                  d76b0b8b776bbbecf9bce43133b80b2329fc618d4f6f3575c141bda202179b530b619107b1b68fe0f08a995b0b27a8e0677a721c27ce1e388a90488330435f59

                • \Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  c75e38d628f1e1f3abcf1c9efb73749f

                  SHA1

                  5eb758e74df4d94f305df4f0e141b7161a3b432c

                  SHA256

                  0e3a837116ab4baf59662ee6d92d7246fc25652e3468e7ed16d281e3d552dca0

                  SHA512

                  b5f4dc7a3320608b68434073552c2148fa838e677160e70c58e2b4b2f4e9691d6dfdfc743ad1fab80cd19e3ad67b47feec5f32e4e198b1090b4eee6a78269e27

                • memory/1924-54-0x0000000075091000-0x0000000075093000-memory.dmp

                  Filesize

                  8KB