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Analysis

  • max time kernel
    121s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    28/12/2023, 15:32

General

  • Target

    e6ec699b6839f02fec298d786d95244e.exe

  • Size

    2.5MB

  • MD5

    e6ec699b6839f02fec298d786d95244e

  • SHA1

    f1c26f1a8729f075f2f49c849be1d8b817bf1b6c

  • SHA256

    d86c9114ecca7a31539278705d7e50f9674a562e1382a6053e735d9d2b30942a

  • SHA512

    e579bbaa11529b8bdcb33771ef39e1b1461aa927bf7ce7f24c633aff2b14fe5367e0bdb259354942a7d95f82f34960f110a1bfad1db55b819de486f1a6d4971c

  • SSDEEP

    1536:Hn/Ay6PcOtb0LO6kWkVc/HfvfNdmNzyrhe:Hn/A7

Malware Config

Signatures

  • Makop

    Ransomware family discovered by @VK_Intel in early 2020.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Nirsoft 1 IoCs
  • Renames multiple (212) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 7 IoCs
  • Windows security modification 2 TTPs 8 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 21 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • Delays execution with timeout.exe 2 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious behavior: EnumeratesProcesses 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 58 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\e6ec699b6839f02fec298d786d95244e.exe
    "C:\Users\Admin\AppData\Local\Temp\e6ec699b6839f02fec298d786d95244e.exe"
    1⤵
    • Modifies Windows Defender Real-time Protection settings
    • Windows security bypass
    • Loads dropped DLL
    • Windows security modification
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2896
    • C:\Users\Admin\AppData\Local\Temp\ed811e4f-b503-4917-9e09-401cc5a72d0c\AdvancedRun.exe
      "C:\Users\Admin\AppData\Local\Temp\ed811e4f-b503-4917-9e09-401cc5a72d0c\AdvancedRun.exe" /EXEFilename "C:\Users\Admin\AppData\Local\Temp\ed811e4f-b503-4917-9e09-401cc5a72d0c\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2776
      • C:\Users\Admin\AppData\Local\Temp\ed811e4f-b503-4917-9e09-401cc5a72d0c\AdvancedRun.exe
        "C:\Users\Admin\AppData\Local\Temp\ed811e4f-b503-4917-9e09-401cc5a72d0c\AdvancedRun.exe" /SpecialRun 4101d8 2776
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2384
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\e6ec699b6839f02fec298d786d95244e.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2676
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2488
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:2632
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2896 -s 1004
      2⤵
      • Program crash
      PID:2636
    • C:\Users\Admin\AppData\Local\Temp\e6ec699b6839f02fec298d786d95244e.exe
      "C:\Users\Admin\AppData\Local\Temp\e6ec699b6839f02fec298d786d95244e.exe"
      2⤵
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2992
    • C:\Users\Admin\AppData\Local\Temp\e6ec699b6839f02fec298d786d95244e.exe
      "C:\Users\Admin\AppData\Local\Temp\e6ec699b6839f02fec298d786d95244e.exe"
      2⤵
        PID:2996
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1684
    • C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      1⤵
      • Interacts with shadow copies
      PID:3008
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:2872
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic shadowcopy delete
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:796
      • C:\Windows\system32\wbadmin.exe
        wbadmin delete catalog -quiet
        2⤵
        • Deletes backup catalog
        PID:1992
    • C:\Users\Admin\AppData\Local\Temp\8ebb0aa6-e7e8-4e77-bb66-7f879586b20f\AdvancedRun.exe
      "C:\Users\Admin\AppData\Local\Temp\8ebb0aa6-e7e8-4e77-bb66-7f879586b20f\AdvancedRun.exe" /SpecialRun 4101d8 1656
      1⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1376
    • C:\Users\Admin\AppData\Local\Temp\8ebb0aa6-e7e8-4e77-bb66-7f879586b20f\AdvancedRun.exe
      "C:\Users\Admin\AppData\Local\Temp\8ebb0aa6-e7e8-4e77-bb66-7f879586b20f\AdvancedRun.exe" /EXEFilename "C:\Users\Admin\AppData\Local\Temp\8ebb0aa6-e7e8-4e77-bb66-7f879586b20f\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1656
    • C:\Users\Admin\AppData\Local\Temp\e6ec699b6839f02fec298d786d95244e.exe
      "C:\Users\Admin\AppData\Local\Temp\e6ec699b6839f02fec298d786d95244e.exe" n2992
      1⤵
      • Loads dropped DLL
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2868
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout 1
        2⤵
          PID:2600
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\e6ec699b6839f02fec298d786d95244e.exe" -Force
          2⤵
          • Drops file in System32 directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3068
        • C:\Users\Admin\AppData\Local\Temp\e6ec699b6839f02fec298d786d95244e.exe
          "C:\Users\Admin\AppData\Local\Temp\e6ec699b6839f02fec298d786d95244e.exe"
          2⤵
            PID:1632
        • C:\Windows\system32\wbengine.exe
          "C:\Windows\system32\wbengine.exe"
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1948
        • C:\Windows\System32\vds.exe
          C:\Windows\System32\vds.exe
          1⤵
            PID:1928
          • C:\Windows\System32\vdsldr.exe
            C:\Windows\System32\vdsldr.exe -Embedding
            1⤵
              PID:2940
            • C:\Windows\SysWOW64\timeout.exe
              timeout 1
              1⤵
              • Delays execution with timeout.exe
              PID:2752

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • \Users\Admin\AppData\Local\Temp\ed811e4f-b503-4917-9e09-401cc5a72d0c\AdvancedRun.exe

              Filesize

              88KB

              MD5

              17fc12902f4769af3a9271eb4e2dacce

              SHA1

              9a4a1581cc3971579574f837e110f3bd6d529dab

              SHA256

              29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

              SHA512

              036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

            • memory/1632-528-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

              Filesize

              4KB

            • memory/1632-533-0x0000000000401000-0x0000000000408000-memory.dmp

              Filesize

              28KB

            • memory/2676-23-0x000000006ED50000-0x000000006F2FB000-memory.dmp

              Filesize

              5.7MB

            • memory/2676-25-0x000000006ED50000-0x000000006F2FB000-memory.dmp

              Filesize

              5.7MB

            • memory/2676-21-0x000000006ED50000-0x000000006F2FB000-memory.dmp

              Filesize

              5.7MB

            • memory/2676-22-0x0000000002830000-0x0000000002870000-memory.dmp

              Filesize

              256KB

            • memory/2676-24-0x0000000002830000-0x0000000002870000-memory.dmp

              Filesize

              256KB

            • memory/2868-37-0x0000000073EC0000-0x00000000745AE000-memory.dmp

              Filesize

              6.9MB

            • memory/2868-38-0x0000000007640000-0x0000000007680000-memory.dmp

              Filesize

              256KB

            • memory/2868-534-0x0000000073EC0000-0x00000000745AE000-memory.dmp

              Filesize

              6.9MB

            • memory/2896-3-0x00000000001E0000-0x0000000000252000-memory.dmp

              Filesize

              456KB

            • memory/2896-536-0x00000000050D0000-0x0000000005110000-memory.dmp

              Filesize

              256KB

            • memory/2896-535-0x0000000073EC0000-0x00000000745AE000-memory.dmp

              Filesize

              6.9MB

            • memory/2896-0-0x0000000001140000-0x00000000013C2000-memory.dmp

              Filesize

              2.5MB

            • memory/2896-2-0x00000000050D0000-0x0000000005110000-memory.dmp

              Filesize

              256KB

            • memory/2896-1-0x0000000073EC0000-0x00000000745AE000-memory.dmp

              Filesize

              6.9MB

            • memory/2992-26-0x0000000000400000-0x000000000041E000-memory.dmp

              Filesize

              120KB

            • memory/2992-27-0x0000000000400000-0x000000000041E000-memory.dmp

              Filesize

              120KB

            • memory/2992-28-0x0000000000400000-0x000000000041E000-memory.dmp

              Filesize

              120KB

            • memory/2992-52-0x0000000000400000-0x000000000041E000-memory.dmp

              Filesize

              120KB

            • memory/2992-30-0x0000000000400000-0x000000000041E000-memory.dmp

              Filesize

              120KB

            • memory/2992-31-0x0000000000400000-0x000000000041E000-memory.dmp

              Filesize

              120KB

            • memory/2992-34-0x0000000000400000-0x000000000041E000-memory.dmp

              Filesize

              120KB

            • memory/2992-36-0x0000000000400000-0x000000000041E000-memory.dmp

              Filesize

              120KB

            • memory/2992-32-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

              Filesize

              4KB

            • memory/3068-517-0x000000006DA20000-0x000000006DFCB000-memory.dmp

              Filesize

              5.7MB

            • memory/3068-519-0x000000006DA20000-0x000000006DFCB000-memory.dmp

              Filesize

              5.7MB

            • memory/3068-518-0x0000000002960000-0x00000000029A0000-memory.dmp

              Filesize

              256KB

            • memory/3068-520-0x000000006DA20000-0x000000006DFCB000-memory.dmp

              Filesize

              5.7MB