Analysis

  • max time kernel
    36s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24/11/2022, 05:40

General

  • Target

    648bea81c119b95b0835ac62f5090dcfed77ac41de7d9b5ac8c72170f30b39a5.exe

  • Size

    602KB

  • MD5

    0a8cc7845959eb91f851a31c5d738731

  • SHA1

    a3c8fb9f633f5f2ea1008d7f8b1652f880072e39

  • SHA256

    648bea81c119b95b0835ac62f5090dcfed77ac41de7d9b5ac8c72170f30b39a5

  • SHA512

    b3b3997b3e89f8df2304f33705cb64970b64d80dbf90553aa345cdafe9f10c7d0ab0aadf68e317bb9ea9108ea4f9d0e2e01061ef985dfe5982b053efcbe5021f

  • SSDEEP

    12288:YIny5DYT0B08q1XCJkgTsKxd8DLu67Zi2EHqyPz1:2UT0BxqOgKxd8DLbQqyr

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\648bea81c119b95b0835ac62f5090dcfed77ac41de7d9b5ac8c72170f30b39a5.exe
    "C:\Users\Admin\AppData\Local\Temp\648bea81c119b95b0835ac62f5090dcfed77ac41de7d9b5ac8c72170f30b39a5.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:1508
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1444
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2000
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:940
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:948
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1572
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1864
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1872
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1740
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1548
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:240
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1184
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:552
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1576

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                • C:\Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  451c74a01e0583fd007902649d0ea656

                  SHA1

                  57744338514c68738f6b03ec169977d4c72970cc

                  SHA256

                  7e08a57b1b8e35c630aed3c3dc1faec1d78e00fb80f5a72006a1065e8a2d122a

                  SHA512

                  eb2490a69bbcb596b48d61b56121776b09c99ac866bc304227e28de26e83a1790c1eb1af7c01e4664107a9a816e5fe46d4f2a70657466111759675594e3601a1

                • C:\Windows\SysWOW64\hfpapi.dll

                  Filesize

                  241KB

                  MD5

                  f393e66bca3308a4b3604bee0f909d4c

                  SHA1

                  c9667cccd93ae95ce481d4e074a424eb4ac3f7b1

                  SHA256

                  38a4519e1aa6bc08c34851ee0a7a365b58bf583170323fce2e3f89e26ffae58e

                  SHA512

                  fdd69cb10c9d61680ecb452652386be27b6e6c35603a4b9c395965141edddee6484ccd779acaa57a703741fc6286086d3edc980bf9c7d09524c5580b5728544b

                • C:\Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  035c067454531e248f66d71482bb3034

                  SHA1

                  92b4ad778a439fbad0156269c8030e1f77dc2b43

                  SHA256

                  ebf057d1117dc439dd3e44bc5c8f7fbf30c70c463bad8fd50fc2e7ef75f5a826

                  SHA512

                  e0374417855afa1fcd8579253b4736aed509fd956a8aac58b89558295a0e16e5d37b2f7d0cc08fb98f63be4ce2a0e7d4d16865e2da2a7d4d30bca32b66f1eec0

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  c7f33362413ae5dba53b3a91a3cf5c96

                  SHA1

                  bd8b705ba8abd2b1708522dd634f732de87c9318

                  SHA256

                  fccb609a32f9b758c57b213c72f23db27a42e536784f1de56dcc5a6c96332e42

                  SHA512

                  fa6c733071a4fe64e988f1cd494738f5cb7ddcb95c57c48d3478a662e5a5a8bb69e5e53345ca2478c8bf2404857fdcd52700f697ef398fb6e67b4aae4ded62b8

                • C:\Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  c7f33362413ae5dba53b3a91a3cf5c96

                  SHA1

                  bd8b705ba8abd2b1708522dd634f732de87c9318

                  SHA256

                  fccb609a32f9b758c57b213c72f23db27a42e536784f1de56dcc5a6c96332e42

                  SHA512

                  fa6c733071a4fe64e988f1cd494738f5cb7ddcb95c57c48d3478a662e5a5a8bb69e5e53345ca2478c8bf2404857fdcd52700f697ef398fb6e67b4aae4ded62b8

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  699300406b4361a263436ee02a971b19

                  SHA1

                  d4317ba5ca084c0b49f4ed720cb1d40fd3d5bbca

                  SHA256

                  4285ec670c56b5a910b939b7a40e5d239cc4391133238f6c94fa0db60fe2f794

                  SHA512

                  2129b59b0b7c6fbe4cfc9a967ea9efa19397cd350036432ebd312e1ae859c2a196df63aa1ebbda33d0259b1c4fb3408adc9838712d53cdb5d114bc18482dd7f5

                • C:\Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  699300406b4361a263436ee02a971b19

                  SHA1

                  d4317ba5ca084c0b49f4ed720cb1d40fd3d5bbca

                  SHA256

                  4285ec670c56b5a910b939b7a40e5d239cc4391133238f6c94fa0db60fe2f794

                  SHA512

                  2129b59b0b7c6fbe4cfc9a967ea9efa19397cd350036432ebd312e1ae859c2a196df63aa1ebbda33d0259b1c4fb3408adc9838712d53cdb5d114bc18482dd7f5

                • \Users\Admin\AppData\Local\Temp\nsoA26A.tmp\System.dll

                  Filesize

                  11KB

                  MD5

                  c17103ae9072a06da581dec998343fc1

                  SHA1

                  b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

                  SHA256

                  dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

                  SHA512

                  d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

                • \Users\Admin\AppData\Local\Temp\nsoA26A.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nsoA26A.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nsoA26A.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Users\Admin\AppData\Local\Temp\nsoA26A.tmp\nsExec.dll

                  Filesize

                  6KB

                  MD5

                  acc2b699edfea5bf5aae45aba3a41e96

                  SHA1

                  d2accf4d494e43ceb2cff69abe4dd17147d29cc2

                  SHA256

                  168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

                  SHA512

                  e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  451c74a01e0583fd007902649d0ea656

                  SHA1

                  57744338514c68738f6b03ec169977d4c72970cc

                  SHA256

                  7e08a57b1b8e35c630aed3c3dc1faec1d78e00fb80f5a72006a1065e8a2d122a

                  SHA512

                  eb2490a69bbcb596b48d61b56121776b09c99ac866bc304227e28de26e83a1790c1eb1af7c01e4664107a9a816e5fe46d4f2a70657466111759675594e3601a1

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  451c74a01e0583fd007902649d0ea656

                  SHA1

                  57744338514c68738f6b03ec169977d4c72970cc

                  SHA256

                  7e08a57b1b8e35c630aed3c3dc1faec1d78e00fb80f5a72006a1065e8a2d122a

                  SHA512

                  eb2490a69bbcb596b48d61b56121776b09c99ac866bc304227e28de26e83a1790c1eb1af7c01e4664107a9a816e5fe46d4f2a70657466111759675594e3601a1

                • \Windows\SysWOW64\hfnapi.dll

                  Filesize

                  106KB

                  MD5

                  451c74a01e0583fd007902649d0ea656

                  SHA1

                  57744338514c68738f6b03ec169977d4c72970cc

                  SHA256

                  7e08a57b1b8e35c630aed3c3dc1faec1d78e00fb80f5a72006a1065e8a2d122a

                  SHA512

                  eb2490a69bbcb596b48d61b56121776b09c99ac866bc304227e28de26e83a1790c1eb1af7c01e4664107a9a816e5fe46d4f2a70657466111759675594e3601a1

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  241KB

                  MD5

                  f393e66bca3308a4b3604bee0f909d4c

                  SHA1

                  c9667cccd93ae95ce481d4e074a424eb4ac3f7b1

                  SHA256

                  38a4519e1aa6bc08c34851ee0a7a365b58bf583170323fce2e3f89e26ffae58e

                  SHA512

                  fdd69cb10c9d61680ecb452652386be27b6e6c35603a4b9c395965141edddee6484ccd779acaa57a703741fc6286086d3edc980bf9c7d09524c5580b5728544b

                • \Windows\SysWOW64\hfpapi.dll

                  Filesize

                  241KB

                  MD5

                  f393e66bca3308a4b3604bee0f909d4c

                  SHA1

                  c9667cccd93ae95ce481d4e074a424eb4ac3f7b1

                  SHA256

                  38a4519e1aa6bc08c34851ee0a7a365b58bf583170323fce2e3f89e26ffae58e

                  SHA512

                  fdd69cb10c9d61680ecb452652386be27b6e6c35603a4b9c395965141edddee6484ccd779acaa57a703741fc6286086d3edc980bf9c7d09524c5580b5728544b

                • \Windows\SysWOW64\installd.exe

                  Filesize

                  108KB

                  MD5

                  035c067454531e248f66d71482bb3034

                  SHA1

                  92b4ad778a439fbad0156269c8030e1f77dc2b43

                  SHA256

                  ebf057d1117dc439dd3e44bc5c8f7fbf30c70c463bad8fd50fc2e7ef75f5a826

                  SHA512

                  e0374417855afa1fcd8579253b4736aed509fd956a8aac58b89558295a0e16e5d37b2f7d0cc08fb98f63be4ce2a0e7d4d16865e2da2a7d4d30bca32b66f1eec0

                • \Windows\SysWOW64\nethtsrv.exe

                  Filesize

                  176KB

                  MD5

                  c7f33362413ae5dba53b3a91a3cf5c96

                  SHA1

                  bd8b705ba8abd2b1708522dd634f732de87c9318

                  SHA256

                  fccb609a32f9b758c57b213c72f23db27a42e536784f1de56dcc5a6c96332e42

                  SHA512

                  fa6c733071a4fe64e988f1cd494738f5cb7ddcb95c57c48d3478a662e5a5a8bb69e5e53345ca2478c8bf2404857fdcd52700f697ef398fb6e67b4aae4ded62b8

                • \Windows\SysWOW64\netupdsrv.exe

                  Filesize

                  158KB

                  MD5

                  699300406b4361a263436ee02a971b19

                  SHA1

                  d4317ba5ca084c0b49f4ed720cb1d40fd3d5bbca

                  SHA256

                  4285ec670c56b5a910b939b7a40e5d239cc4391133238f6c94fa0db60fe2f794

                  SHA512

                  2129b59b0b7c6fbe4cfc9a967ea9efa19397cd350036432ebd312e1ae859c2a196df63aa1ebbda33d0259b1c4fb3408adc9838712d53cdb5d114bc18482dd7f5

                • memory/1508-54-0x0000000075451000-0x0000000075453000-memory.dmp

                  Filesize

                  8KB

                • memory/1508-55-0x0000000000360000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.4MB

                • memory/1508-90-0x0000000000360000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.4MB

                • memory/1508-91-0x0000000000360000-0x00000000007BE000-memory.dmp

                  Filesize

                  4.4MB