Analysis

  • max time kernel
    46s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:30

General

  • Target

    2900dec29c8e1bdef282b6c086a442722b9a6dec46576b8c53516da96f4b34c5.exe

  • Size

    598KB

  • MD5

    d000632e24934387d1789edca16bddce

  • SHA1

    ca38373f53ac28c859cbc18d8b58089b06e7615d

  • SHA256

    2900dec29c8e1bdef282b6c086a442722b9a6dec46576b8c53516da96f4b34c5

  • SHA512

    432c64e3277894002e1ce058d33a4ed9ea67e8896c9dd544930af1e4556834199523eee74845caa0ff40b1119c2f9718bb76716ae096ccbee1eff6420161cf86

  • SSDEEP

    12288:YIny5DYTPCRh6H5G9T+ZsRsQocZev31NCvoO+l8EBlAQUe:2UTPCCe3Joce31QzKZvt

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\2900dec29c8e1bdef282b6c086a442722b9a6dec46576b8c53516da96f4b34c5.exe
    "C:\Users\Admin\AppData\Local\Temp\2900dec29c8e1bdef282b6c086a442722b9a6dec46576b8c53516da96f4b34c5.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:1308
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:112
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:556
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:916
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:468
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:688
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1388
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1780
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1932
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:968
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1276
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1508
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1816
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1152

          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:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            86f40350178c2825893742fb08527420

            SHA1

            61e912da79215c77fe9709bd2271d50758939bcf

            SHA256

            0e9f830ad6838d424d70c8f2aa569d407cac8136fcc8aff91c4f5099912a6cf7

            SHA512

            43c8130d2c238ebf9a5c5ec053285cce64061484d610fbc6d269004c28f905bdf9c4e54eec43eae9ecd7870bebbdf0c22e709946868faef042c9ce5038ec44ef

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

            241KB

            MD5

            c864877501a6f78f29a733b2d738886d

            SHA1

            8c5dc59292275195801a36e9fea06333df7384e1

            SHA256

            980ade3cdc415c38e3a6a5e10b49739e1f58abdff759a4676c27c6db41724cf0

            SHA512

            7daa99f68d3fde88299d5d0cfc31350bd9ecc3d9a1b8a030b08582f15bb8bc2ec2316b8b73c423cb61b46fb61a3311d05dd44367b8a82b697182765198737c8c

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

            108KB

            MD5

            88757db169a4adfa320781fbaf05c933

            SHA1

            e74d3e6debd1dd97a1bd62a27f469aaa08f5adf2

            SHA256

            6b07663868222a3f6d184165bf3f7cedcd625bcf3d18648fc8986b56290ca34b

            SHA512

            add52c6f5d1194fc2c5cf5724750bed7249910120dc1b64454f2c4a5392fb8c6c3324a712d1553c324f0193c965b89e5314f08d534abe0d97bb0d3a6c18e718f

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

            176KB

            MD5

            84d88eb5b215c081606e44213acbc104

            SHA1

            4f1c5874ab3ef3b67eed539568f9d8ae172d0515

            SHA256

            cd884256e1fcc0d66969ed991cf9f811bb66b2c5095763502986d22199a53a74

            SHA512

            683d4543ba926266616c085dd7b7a084919ab08016d4930e38bd3b70404dd7814ccf12d275930abb3868f01f9b8fdce8eaf1f79d5eae6de65c94c4b009190d9b

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

            176KB

            MD5

            84d88eb5b215c081606e44213acbc104

            SHA1

            4f1c5874ab3ef3b67eed539568f9d8ae172d0515

            SHA256

            cd884256e1fcc0d66969ed991cf9f811bb66b2c5095763502986d22199a53a74

            SHA512

            683d4543ba926266616c085dd7b7a084919ab08016d4930e38bd3b70404dd7814ccf12d275930abb3868f01f9b8fdce8eaf1f79d5eae6de65c94c4b009190d9b

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

            159KB

            MD5

            0137951765fbb85f13eb82d18d6eb978

            SHA1

            6c03ac83e177e36b5992048d462c81b89b3c04ce

            SHA256

            94ac2b9d67de5d852d80a5eb937ac1a3119d55dcff96d082c93b184fa3341420

            SHA512

            f5674a07daa0dff4bcae948e6eea2bfd3bb0c520613e697c001ea7ce8555970d9ecf1bca226095217e582e7de0b9d7b3ac5434a13087cd30d131746077e922f8

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

            159KB

            MD5

            0137951765fbb85f13eb82d18d6eb978

            SHA1

            6c03ac83e177e36b5992048d462c81b89b3c04ce

            SHA256

            94ac2b9d67de5d852d80a5eb937ac1a3119d55dcff96d082c93b184fa3341420

            SHA512

            f5674a07daa0dff4bcae948e6eea2bfd3bb0c520613e697c001ea7ce8555970d9ecf1bca226095217e582e7de0b9d7b3ac5434a13087cd30d131746077e922f8

          • \Users\Admin\AppData\Local\Temp\nsyA02.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyA02.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyA02.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyA02.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyA02.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            86f40350178c2825893742fb08527420

            SHA1

            61e912da79215c77fe9709bd2271d50758939bcf

            SHA256

            0e9f830ad6838d424d70c8f2aa569d407cac8136fcc8aff91c4f5099912a6cf7

            SHA512

            43c8130d2c238ebf9a5c5ec053285cce64061484d610fbc6d269004c28f905bdf9c4e54eec43eae9ecd7870bebbdf0c22e709946868faef042c9ce5038ec44ef

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            86f40350178c2825893742fb08527420

            SHA1

            61e912da79215c77fe9709bd2271d50758939bcf

            SHA256

            0e9f830ad6838d424d70c8f2aa569d407cac8136fcc8aff91c4f5099912a6cf7

            SHA512

            43c8130d2c238ebf9a5c5ec053285cce64061484d610fbc6d269004c28f905bdf9c4e54eec43eae9ecd7870bebbdf0c22e709946868faef042c9ce5038ec44ef

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            86f40350178c2825893742fb08527420

            SHA1

            61e912da79215c77fe9709bd2271d50758939bcf

            SHA256

            0e9f830ad6838d424d70c8f2aa569d407cac8136fcc8aff91c4f5099912a6cf7

            SHA512

            43c8130d2c238ebf9a5c5ec053285cce64061484d610fbc6d269004c28f905bdf9c4e54eec43eae9ecd7870bebbdf0c22e709946868faef042c9ce5038ec44ef

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            c864877501a6f78f29a733b2d738886d

            SHA1

            8c5dc59292275195801a36e9fea06333df7384e1

            SHA256

            980ade3cdc415c38e3a6a5e10b49739e1f58abdff759a4676c27c6db41724cf0

            SHA512

            7daa99f68d3fde88299d5d0cfc31350bd9ecc3d9a1b8a030b08582f15bb8bc2ec2316b8b73c423cb61b46fb61a3311d05dd44367b8a82b697182765198737c8c

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            c864877501a6f78f29a733b2d738886d

            SHA1

            8c5dc59292275195801a36e9fea06333df7384e1

            SHA256

            980ade3cdc415c38e3a6a5e10b49739e1f58abdff759a4676c27c6db41724cf0

            SHA512

            7daa99f68d3fde88299d5d0cfc31350bd9ecc3d9a1b8a030b08582f15bb8bc2ec2316b8b73c423cb61b46fb61a3311d05dd44367b8a82b697182765198737c8c

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            88757db169a4adfa320781fbaf05c933

            SHA1

            e74d3e6debd1dd97a1bd62a27f469aaa08f5adf2

            SHA256

            6b07663868222a3f6d184165bf3f7cedcd625bcf3d18648fc8986b56290ca34b

            SHA512

            add52c6f5d1194fc2c5cf5724750bed7249910120dc1b64454f2c4a5392fb8c6c3324a712d1553c324f0193c965b89e5314f08d534abe0d97bb0d3a6c18e718f

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            84d88eb5b215c081606e44213acbc104

            SHA1

            4f1c5874ab3ef3b67eed539568f9d8ae172d0515

            SHA256

            cd884256e1fcc0d66969ed991cf9f811bb66b2c5095763502986d22199a53a74

            SHA512

            683d4543ba926266616c085dd7b7a084919ab08016d4930e38bd3b70404dd7814ccf12d275930abb3868f01f9b8fdce8eaf1f79d5eae6de65c94c4b009190d9b

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            0137951765fbb85f13eb82d18d6eb978

            SHA1

            6c03ac83e177e36b5992048d462c81b89b3c04ce

            SHA256

            94ac2b9d67de5d852d80a5eb937ac1a3119d55dcff96d082c93b184fa3341420

            SHA512

            f5674a07daa0dff4bcae948e6eea2bfd3bb0c520613e697c001ea7ce8555970d9ecf1bca226095217e582e7de0b9d7b3ac5434a13087cd30d131746077e922f8

          • memory/112-58-0x0000000000000000-mapping.dmp
          • memory/468-62-0x0000000000000000-mapping.dmp
          • memory/556-59-0x0000000000000000-mapping.dmp
          • memory/688-64-0x0000000000000000-mapping.dmp
          • memory/916-61-0x0000000000000000-mapping.dmp
          • memory/968-81-0x0000000000000000-mapping.dmp
          • memory/1276-86-0x0000000000000000-mapping.dmp
          • memory/1308-54-0x0000000074DA1000-0x0000000074DA3000-memory.dmp
            Filesize

            8KB

          • memory/1308-55-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1308-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1388-70-0x0000000000000000-mapping.dmp
          • memory/1508-87-0x0000000000000000-mapping.dmp
          • memory/1780-76-0x0000000000000000-mapping.dmp
          • memory/1932-80-0x0000000000000000-mapping.dmp