Analysis

  • max time kernel
    42s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2022, 21:06

General

  • Target

    a7eaab17de49c23de5e7807a7aa5ed1010e047ba3914b37c748dcbf9a6059344.exe

  • Size

    561KB

  • MD5

    fd99872c464264c694ff61ef3e2010a3

  • SHA1

    aa224ac329ef7bfbe7ae9cae9f65a0d516c3e66d

  • SHA256

    a7eaab17de49c23de5e7807a7aa5ed1010e047ba3914b37c748dcbf9a6059344

  • SHA512

    da3864a9fb22373dcb915aeb66d71319ddf639b55629ae157d1263aa90d913a9ab1d39432740c007a2da0e555c92ee7aaa2d528255356edd865f14c2a68beaff

  • SSDEEP

    12288:LPRYzObf+WJJbBYNk9MVKZ279LXSSEx+QV15qK9PAHVQ6Skf5i:mzCfXBYNkGVQ279LXs1sK94VQB8Q

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\a7eaab17de49c23de5e7807a7aa5ed1010e047ba3914b37c748dcbf9a6059344.exe
    "C:\Users\Admin\AppData\Local\Temp\a7eaab17de49c23de5e7807a7aa5ed1010e047ba3914b37c748dcbf9a6059344.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:964
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:980
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1348
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1728
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1304
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2036
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1564
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:808
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1928
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1180
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1480
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1552
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:392
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:852

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • C:\Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  083e0dd4282eb6719d35832cf53b49f7

                  SHA1

                  ecb5520ea0410b55ad14a6092d8a9d6b90681189

                  SHA256

                  e2d8c36e39821e3edf816da3774f0dd3c2bc625778bc3010af96fe400ad01fc2

                  SHA512

                  67d4b0b9af1428571c9ca36f56c12736412640fc90c67fb4418665eeb29a7997c1167f61d6f2a5b4d69ff0d93f3839d036cc6d2ac85d8df1dedb061de7cdbfa8

                • C:\Windows\SysWOW64\hfpapi.dll

                  Filesize

                  244KB

                  MD5

                  6b4f13856d5594d56139d27142e9c71c

                  SHA1

                  367bc9178ecc555e2afd93b7b61a25d3ef0b32f9

                  SHA256

                  8714e60497be8e0a96469cbbf8303d0ac2680f7c7d8529db0bf254525f23912b

                  SHA512

                  e89d197fb0a723c210cc8564850768a3b086e710db42d7269dc2d39b444a863f1f7da5e0f2411893db50f6bec3368e1b5b768e637cc7af5fac7b82d2ddb13ddc

                • C:\Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  325429563bbbe5e78d699aee874d0dfb

                  SHA1

                  e094190c2ff2018ec85b7c9d6c8f72c9ce455a91

                  SHA256

                  96ddc854629e5e753529ffe7462f182d431585fdd8a496d767beeedec894d5d7

                  SHA512

                  170bb0a97bdead3c90b18d0e7d42bbb02f0963c7c2853ad67dc30dc1f22edff6714f74f73fed5c9ebae34c7ca6d7f97062f14d5e8dda1e5158edb4a7e94b63e0

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  61be9b4f0a5255fb44b8db86a64cf02a

                  SHA1

                  b047893950c18ec756790c02843cc89a40869866

                  SHA256

                  c9732422c9a3842c06a603eb931a89099c5f7d527df87f79fe9b43dfa6f0c7f9

                  SHA512

                  2d5430d59f5dc9645e335362546b6a6e23a1eb887afe543211d47f233c19aefc61e81fb4bd0cbd449836f15a20b1924bc5e76b42e29f510ce895cdfae210c19c

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  61be9b4f0a5255fb44b8db86a64cf02a

                  SHA1

                  b047893950c18ec756790c02843cc89a40869866

                  SHA256

                  c9732422c9a3842c06a603eb931a89099c5f7d527df87f79fe9b43dfa6f0c7f9

                  SHA512

                  2d5430d59f5dc9645e335362546b6a6e23a1eb887afe543211d47f233c19aefc61e81fb4bd0cbd449836f15a20b1924bc5e76b42e29f510ce895cdfae210c19c

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  88f7f49ce8eb2e2df1d6ce2934af9dc7

                  SHA1

                  af78962d2c886c79ae7b6c4c60aa82cec2f76d1e

                  SHA256

                  2967bfcd4c21e53a367f428d886ce5438c5455dfcb3858fc611404703da10709

                  SHA512

                  7c0eebdeec6c8760c3d8ad67f3b5a74999c6172374ffa8e68ecc8b9aca25b1fe68966466c1e49403687e8ee5c56deaa408019b185802080c036dc082a3b252c4

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  88f7f49ce8eb2e2df1d6ce2934af9dc7

                  SHA1

                  af78962d2c886c79ae7b6c4c60aa82cec2f76d1e

                  SHA256

                  2967bfcd4c21e53a367f428d886ce5438c5455dfcb3858fc611404703da10709

                  SHA512

                  7c0eebdeec6c8760c3d8ad67f3b5a74999c6172374ffa8e68ecc8b9aca25b1fe68966466c1e49403687e8ee5c56deaa408019b185802080c036dc082a3b252c4

                • \Users\Admin\AppData\Local\Temp\nsj761D.tmp\System.dll

                  Filesize

                  11KB

                  MD5

                  c17103ae9072a06da581dec998343fc1

                  SHA1

                  b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

                  SHA256

                  dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

                  SHA512

                  d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

                • \Users\Admin\AppData\Local\Temp\nsj761D.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nsj761D.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nsj761D.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nsj761D.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  083e0dd4282eb6719d35832cf53b49f7

                  SHA1

                  ecb5520ea0410b55ad14a6092d8a9d6b90681189

                  SHA256

                  e2d8c36e39821e3edf816da3774f0dd3c2bc625778bc3010af96fe400ad01fc2

                  SHA512

                  67d4b0b9af1428571c9ca36f56c12736412640fc90c67fb4418665eeb29a7997c1167f61d6f2a5b4d69ff0d93f3839d036cc6d2ac85d8df1dedb061de7cdbfa8

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  083e0dd4282eb6719d35832cf53b49f7

                  SHA1

                  ecb5520ea0410b55ad14a6092d8a9d6b90681189

                  SHA256

                  e2d8c36e39821e3edf816da3774f0dd3c2bc625778bc3010af96fe400ad01fc2

                  SHA512

                  67d4b0b9af1428571c9ca36f56c12736412640fc90c67fb4418665eeb29a7997c1167f61d6f2a5b4d69ff0d93f3839d036cc6d2ac85d8df1dedb061de7cdbfa8

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  083e0dd4282eb6719d35832cf53b49f7

                  SHA1

                  ecb5520ea0410b55ad14a6092d8a9d6b90681189

                  SHA256

                  e2d8c36e39821e3edf816da3774f0dd3c2bc625778bc3010af96fe400ad01fc2

                  SHA512

                  67d4b0b9af1428571c9ca36f56c12736412640fc90c67fb4418665eeb29a7997c1167f61d6f2a5b4d69ff0d93f3839d036cc6d2ac85d8df1dedb061de7cdbfa8

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  244KB

                  MD5

                  6b4f13856d5594d56139d27142e9c71c

                  SHA1

                  367bc9178ecc555e2afd93b7b61a25d3ef0b32f9

                  SHA256

                  8714e60497be8e0a96469cbbf8303d0ac2680f7c7d8529db0bf254525f23912b

                  SHA512

                  e89d197fb0a723c210cc8564850768a3b086e710db42d7269dc2d39b444a863f1f7da5e0f2411893db50f6bec3368e1b5b768e637cc7af5fac7b82d2ddb13ddc

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  244KB

                  MD5

                  6b4f13856d5594d56139d27142e9c71c

                  SHA1

                  367bc9178ecc555e2afd93b7b61a25d3ef0b32f9

                  SHA256

                  8714e60497be8e0a96469cbbf8303d0ac2680f7c7d8529db0bf254525f23912b

                  SHA512

                  e89d197fb0a723c210cc8564850768a3b086e710db42d7269dc2d39b444a863f1f7da5e0f2411893db50f6bec3368e1b5b768e637cc7af5fac7b82d2ddb13ddc

                • \Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  325429563bbbe5e78d699aee874d0dfb

                  SHA1

                  e094190c2ff2018ec85b7c9d6c8f72c9ce455a91

                  SHA256

                  96ddc854629e5e753529ffe7462f182d431585fdd8a496d767beeedec894d5d7

                  SHA512

                  170bb0a97bdead3c90b18d0e7d42bbb02f0963c7c2853ad67dc30dc1f22edff6714f74f73fed5c9ebae34c7ca6d7f97062f14d5e8dda1e5158edb4a7e94b63e0

                • \Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  61be9b4f0a5255fb44b8db86a64cf02a

                  SHA1

                  b047893950c18ec756790c02843cc89a40869866

                  SHA256

                  c9732422c9a3842c06a603eb931a89099c5f7d527df87f79fe9b43dfa6f0c7f9

                  SHA512

                  2d5430d59f5dc9645e335362546b6a6e23a1eb887afe543211d47f233c19aefc61e81fb4bd0cbd449836f15a20b1924bc5e76b42e29f510ce895cdfae210c19c

                • \Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  88f7f49ce8eb2e2df1d6ce2934af9dc7

                  SHA1

                  af78962d2c886c79ae7b6c4c60aa82cec2f76d1e

                  SHA256

                  2967bfcd4c21e53a367f428d886ce5438c5455dfcb3858fc611404703da10709

                  SHA512

                  7c0eebdeec6c8760c3d8ad67f3b5a74999c6172374ffa8e68ecc8b9aca25b1fe68966466c1e49403687e8ee5c56deaa408019b185802080c036dc082a3b252c4

                • memory/964-62-0x0000000000360000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.4MB

                • memory/964-91-0x0000000000360000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.4MB

                • memory/964-63-0x0000000000360000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.4MB

                • memory/964-54-0x0000000074AB1000-0x0000000074AB3000-memory.dmp

                  Filesize

                  8KB