Analysis

  • max time kernel
    42s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 13:32

General

  • Target

    e3a91f20943b06fc50790b2410de1ce4ae5f5b1b64bf83d871b3e20c1265a218.exe

  • Size

    562KB

  • MD5

    b7c49c06b9d8bf76d3bcb340d69e8b5e

  • SHA1

    758dd7242e69847721c47439f841016a93a1c051

  • SHA256

    e3a91f20943b06fc50790b2410de1ce4ae5f5b1b64bf83d871b3e20c1265a218

  • SHA512

    23c1df69203274c5b611aebef01e09b8f50b2da93c1b5a87b5b71bfd9d36145b790ceeb064a4172159e04c07bb5461eff137b06bb923f2565a5cc9c0d4085336

  • SSDEEP

    12288:UPRYzJbfgAE3VSDhhLws+fm72Rpf9tIaxPfo2DORWhBbd:Fz9fy32hhLwK72nf96qoaKWL

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\e3a91f20943b06fc50790b2410de1ce4ae5f5b1b64bf83d871b3e20c1265a218.exe
    "C:\Users\Admin\AppData\Local\Temp\e3a91f20943b06fc50790b2410de1ce4ae5f5b1b64bf83d871b3e20c1265a218.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:1672
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1552
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:520
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:560
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:576
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1108
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:980
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1476
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1272
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1604
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1384
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:656
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:776
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:924

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            85872423948102f1ee4a91f86e218503

            SHA1

            c65b997406481ce5fe4a128611f47c09e296cc06

            SHA256

            bd1c76c6442a254fe2b93b58daa6e27028ac9a621379851bc9d6404fcde511cd

            SHA512

            cfa98b61dc596a2ab5135443a9802e098111fff25643a2427b59a163f27db782109fdf1b57c4d0985344cb40161c53388a9b44711c77d712ee7738d537d303c0

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            09180d714bc028bc5c7a8819ec3bd8f4

            SHA1

            2dc82b887414644fb05dc245e52c825193f6105f

            SHA256

            d6152c40967c755f4600c14bedb865411c82983e41ffd2a00708e57208e6f0a4

            SHA512

            16c4ba0c59d303ae32338c0746bf52a33ac2747948ec0cb6675b8722cf8297bf1f73cc661cf470a193891be1f8355e2cb638cdf4d1ce2f5d9ab8be90c39e8821

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            46e22eafc1c0bb38bd6e8595300d7037

            SHA1

            ea2415b24a226a1dd5e5c9fe27f77292fd4f337e

            SHA256

            3b15fb065617f1f6f364c83d08294acb769ed46f2e1de74e8857fadccb4f817b

            SHA512

            8935a1d0c36428dd9320b175b41aac113289f81e3e0c259f1c7ee5d935f4a6cd36f5aa93987ea3d865dfffbffdec8e8bf92f322cf7f375c79190a4e09f98ce7a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            48cb3e5c9c677e72f59d76c464875e9a

            SHA1

            4bd3f3e80e2ad4e1617ed1e3262c123ce4d816fa

            SHA256

            f18c1b87307e357d94bea78666ae9935ff140ece60741c683bffdb27d49ad584

            SHA512

            8cb1a001546740cac457deefccf7c039d2417650dc931d258c83f2a16ef5d55c74212a7b3019349369d9d3edb12ad32e0ea16bf156ffc8f3af855a18b10bddd2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            48cb3e5c9c677e72f59d76c464875e9a

            SHA1

            4bd3f3e80e2ad4e1617ed1e3262c123ce4d816fa

            SHA256

            f18c1b87307e357d94bea78666ae9935ff140ece60741c683bffdb27d49ad584

            SHA512

            8cb1a001546740cac457deefccf7c039d2417650dc931d258c83f2a16ef5d55c74212a7b3019349369d9d3edb12ad32e0ea16bf156ffc8f3af855a18b10bddd2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            eebe3adf8f8d6238a1d4f48ece90c77c

            SHA1

            9e63c480d5c967317f0a91679042f2ce457336ae

            SHA256

            977ba9ec4bb99795f63d423d077fc37ba8c4a9a53f94509bbd1f94a74f4d8283

            SHA512

            5f8b7fd1b85a1c50bbd45c972665373d5b81e67c6a770e465f9accf46eddc08419bf40165da7cb520291ebe92e6c40ba90d2ae4bf646a0b6b1039097d7e822bc

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            eebe3adf8f8d6238a1d4f48ece90c77c

            SHA1

            9e63c480d5c967317f0a91679042f2ce457336ae

            SHA256

            977ba9ec4bb99795f63d423d077fc37ba8c4a9a53f94509bbd1f94a74f4d8283

            SHA512

            5f8b7fd1b85a1c50bbd45c972665373d5b81e67c6a770e465f9accf46eddc08419bf40165da7cb520291ebe92e6c40ba90d2ae4bf646a0b6b1039097d7e822bc

          • \Users\Admin\AppData\Local\Temp\nsj1EF9.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj1EF9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj1EF9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj1EF9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj1EF9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            85872423948102f1ee4a91f86e218503

            SHA1

            c65b997406481ce5fe4a128611f47c09e296cc06

            SHA256

            bd1c76c6442a254fe2b93b58daa6e27028ac9a621379851bc9d6404fcde511cd

            SHA512

            cfa98b61dc596a2ab5135443a9802e098111fff25643a2427b59a163f27db782109fdf1b57c4d0985344cb40161c53388a9b44711c77d712ee7738d537d303c0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            85872423948102f1ee4a91f86e218503

            SHA1

            c65b997406481ce5fe4a128611f47c09e296cc06

            SHA256

            bd1c76c6442a254fe2b93b58daa6e27028ac9a621379851bc9d6404fcde511cd

            SHA512

            cfa98b61dc596a2ab5135443a9802e098111fff25643a2427b59a163f27db782109fdf1b57c4d0985344cb40161c53388a9b44711c77d712ee7738d537d303c0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            85872423948102f1ee4a91f86e218503

            SHA1

            c65b997406481ce5fe4a128611f47c09e296cc06

            SHA256

            bd1c76c6442a254fe2b93b58daa6e27028ac9a621379851bc9d6404fcde511cd

            SHA512

            cfa98b61dc596a2ab5135443a9802e098111fff25643a2427b59a163f27db782109fdf1b57c4d0985344cb40161c53388a9b44711c77d712ee7738d537d303c0

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            09180d714bc028bc5c7a8819ec3bd8f4

            SHA1

            2dc82b887414644fb05dc245e52c825193f6105f

            SHA256

            d6152c40967c755f4600c14bedb865411c82983e41ffd2a00708e57208e6f0a4

            SHA512

            16c4ba0c59d303ae32338c0746bf52a33ac2747948ec0cb6675b8722cf8297bf1f73cc661cf470a193891be1f8355e2cb638cdf4d1ce2f5d9ab8be90c39e8821

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            09180d714bc028bc5c7a8819ec3bd8f4

            SHA1

            2dc82b887414644fb05dc245e52c825193f6105f

            SHA256

            d6152c40967c755f4600c14bedb865411c82983e41ffd2a00708e57208e6f0a4

            SHA512

            16c4ba0c59d303ae32338c0746bf52a33ac2747948ec0cb6675b8722cf8297bf1f73cc661cf470a193891be1f8355e2cb638cdf4d1ce2f5d9ab8be90c39e8821

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            46e22eafc1c0bb38bd6e8595300d7037

            SHA1

            ea2415b24a226a1dd5e5c9fe27f77292fd4f337e

            SHA256

            3b15fb065617f1f6f364c83d08294acb769ed46f2e1de74e8857fadccb4f817b

            SHA512

            8935a1d0c36428dd9320b175b41aac113289f81e3e0c259f1c7ee5d935f4a6cd36f5aa93987ea3d865dfffbffdec8e8bf92f322cf7f375c79190a4e09f98ce7a

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            48cb3e5c9c677e72f59d76c464875e9a

            SHA1

            4bd3f3e80e2ad4e1617ed1e3262c123ce4d816fa

            SHA256

            f18c1b87307e357d94bea78666ae9935ff140ece60741c683bffdb27d49ad584

            SHA512

            8cb1a001546740cac457deefccf7c039d2417650dc931d258c83f2a16ef5d55c74212a7b3019349369d9d3edb12ad32e0ea16bf156ffc8f3af855a18b10bddd2

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            eebe3adf8f8d6238a1d4f48ece90c77c

            SHA1

            9e63c480d5c967317f0a91679042f2ce457336ae

            SHA256

            977ba9ec4bb99795f63d423d077fc37ba8c4a9a53f94509bbd1f94a74f4d8283

            SHA512

            5f8b7fd1b85a1c50bbd45c972665373d5b81e67c6a770e465f9accf46eddc08419bf40165da7cb520291ebe92e6c40ba90d2ae4bf646a0b6b1039097d7e822bc

          • memory/520-58-0x0000000000000000-mapping.dmp

          • memory/560-61-0x0000000000000000-mapping.dmp

          • memory/576-62-0x0000000000000000-mapping.dmp

          • memory/656-87-0x0000000000000000-mapping.dmp

          • memory/980-70-0x0000000000000000-mapping.dmp

          • memory/1108-64-0x0000000000000000-mapping.dmp

          • memory/1272-80-0x0000000000000000-mapping.dmp

          • memory/1384-86-0x0000000000000000-mapping.dmp

          • memory/1476-76-0x0000000000000000-mapping.dmp

          • memory/1552-57-0x0000000000000000-mapping.dmp

          • memory/1604-81-0x0000000000000000-mapping.dmp

          • memory/1672-54-0x0000000075111000-0x0000000075113000-memory.dmp

            Filesize

            8KB

          • memory/1672-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1672-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB