Analysis

  • max time kernel
    91s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-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 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 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:1428
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2072
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4948
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4848
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3348
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4300
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1736
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:116
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:812
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2588
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2996
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2264
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:1308
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2216

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                • C:\Users\Admin\AppData\Local\Temp\nsl8FB.tmp\System.dll

                  Filesize

                  11KB

                  MD5

                  c17103ae9072a06da581dec998343fc1

                  SHA1

                  b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

                  SHA256

                  dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

                  SHA512

                  d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

                • C:\Users\Admin\AppData\Local\Temp\nsl8FB.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • C:\Users\Admin\AppData\Local\Temp\nsl8FB.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • C:\Users\Admin\AppData\Local\Temp\nsl8FB.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • C:\Users\Admin\AppData\Local\Temp\nsl8FB.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • C:\Users\Admin\AppData\Local\Temp\nsl8FB.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • C:\Users\Admin\AppData\Local\Temp\nsl8FB.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • C:\Users\Admin\AppData\Local\Temp\nsl8FB.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • C:\Users\Admin\AppData\Local\Temp\nsl8FB.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • C:\Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  85872423948102f1ee4a91f86e218503

                  SHA1

                  c65b997406481ce5fe4a128611f47c09e296cc06

                  SHA256

                  bd1c76c6442a254fe2b93b58daa6e27028ac9a621379851bc9d6404fcde511cd

                  SHA512

                  cfa98b61dc596a2ab5135443a9802e098111fff25643a2427b59a163f27db782109fdf1b57c4d0985344cb40161c53388a9b44711c77d712ee7738d537d303c0

                • C:\Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  85872423948102f1ee4a91f86e218503

                  SHA1

                  c65b997406481ce5fe4a128611f47c09e296cc06

                  SHA256

                  bd1c76c6442a254fe2b93b58daa6e27028ac9a621379851bc9d6404fcde511cd

                  SHA512

                  cfa98b61dc596a2ab5135443a9802e098111fff25643a2427b59a163f27db782109fdf1b57c4d0985344cb40161c53388a9b44711c77d712ee7738d537d303c0

                • C:\Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  85872423948102f1ee4a91f86e218503

                  SHA1

                  c65b997406481ce5fe4a128611f47c09e296cc06

                  SHA256

                  bd1c76c6442a254fe2b93b58daa6e27028ac9a621379851bc9d6404fcde511cd

                  SHA512

                  cfa98b61dc596a2ab5135443a9802e098111fff25643a2427b59a163f27db782109fdf1b57c4d0985344cb40161c53388a9b44711c77d712ee7738d537d303c0

                • 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\hfpapi.dll

                  Filesize

                  244KB

                  MD5

                  09180d714bc028bc5c7a8819ec3bd8f4

                  SHA1

                  2dc82b887414644fb05dc245e52c825193f6105f

                  SHA256

                  d6152c40967c755f4600c14bedb865411c82983e41ffd2a00708e57208e6f0a4

                  SHA512

                  16c4ba0c59d303ae32338c0746bf52a33ac2747948ec0cb6675b8722cf8297bf1f73cc661cf470a193891be1f8355e2cb638cdf4d1ce2f5d9ab8be90c39e8821

                • 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\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\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

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  eebe3adf8f8d6238a1d4f48ece90c77c

                  SHA1

                  9e63c480d5c967317f0a91679042f2ce457336ae

                  SHA256

                  977ba9ec4bb99795f63d423d077fc37ba8c4a9a53f94509bbd1f94a74f4d8283

                  SHA512

                  5f8b7fd1b85a1c50bbd45c972665373d5b81e67c6a770e465f9accf46eddc08419bf40165da7cb520291ebe92e6c40ba90d2ae4bf646a0b6b1039097d7e822bc

                • memory/1428-132-0x0000000000360000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.4MB

                • memory/1428-168-0x0000000000360000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.4MB