Analysis

  • max time kernel
    57s
  • max time network
    60s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    28/04/2022, 20:03

General

  • Target
    MethamphetamineSolutionsLoader.exe
  • Size 8.0MB
  • Sample220428-ysvwpscbcj
  • SHA256 1a6fd38ece3d73b6612263fed6de4c553cbb46d6e5637e6cd6214ade39b81782
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Signatures

  • DcRat

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

  • DCRat Payload 5 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 9 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 58 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\MethamphetamineSolutionsLoader.exe
    "C:\Users\Admin\AppData\Local\Temp\MethamphetamineSolutionsLoader.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2024
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\monitordhcp\FvrnkODJoiUIyeHAEoTP0Qn5ZC7TdH.vbe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1696
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\monitordhcp\z1T7e01kTYgKk52k4EOgwkfTxey3zt.bat" "
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1656
        • C:\Users\Admin\AppData\Local\Temp\monitordhcp\RtgNSlMYtFvlTt52WHci.exe
          RtgNSlMYtFvlTt52WHci.exe -p721e19c01b35f90a5d4059aedd8f740b779e743b
          4⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:1492
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\monitordhcp\4mdxDUI6yqvmVknEtk7bYzbiBR8MHO.vbe"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1384
            • C:\Windows\SysWOW64\cmd.exe
              cmd /c ""C:\Users\Admin\AppData\Local\Temp\monitordhcp\3hvxTv4ZROtMpYMGDajjCJWH8roHGs.bat" "
              6⤵
              • Loads dropped DLL
              • Suspicious use of WriteProcessMemory
              PID:888
              • C:\Users\Admin\AppData\Local\Temp\monitordhcp\netmonitor.exe
                "C:\Users\Admin\AppData\Local\Temp\monitordhcp\netmonitor.exe"
                7⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:520
                • C:\Windows\system32\schtasks.exe
                  "schtasks" /create /tn "svchost" /sc ONLOGON /tr "'C:\ProgramData\Templates\svchost.exe'" /rl HIGHEST /f
                  8⤵
                  • Creates scheduled task(s)
                  PID:1428
                • C:\Windows\system32\schtasks.exe
                  "schtasks" /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\All Users\Package Cache\{ca67548a-5ebe-413a-b50c-4b9ceb6d66c6}\csrss.exe'" /rl HIGHEST /f
                  8⤵
                  • Creates scheduled task(s)
                  PID:872
                • C:\Windows\system32\schtasks.exe
                  "schtasks" /create /tn "winlogon" /sc ONLOGON /tr "'C:\PerfLogs\Admin\winlogon.exe'" /rl HIGHEST /f
                  8⤵
                  • Creates scheduled task(s)
                  PID:756
                • C:\Windows\system32\schtasks.exe
                  "schtasks" /create /tn "services" /sc ONLOGON /tr "'C:\ProgramData\Start Menu\services.exe'" /rl HIGHEST /f
                  8⤵
                  • Creates scheduled task(s)
                  PID:748
                • C:\Windows\system32\schtasks.exe
                  "schtasks" /create /tn "svchost" /sc ONLOGON /tr "'C:\Recovery\619fcb42-bc70-11ec-bd6f-84e31b84a9f2\svchost.exe'" /rl HIGHEST /f
                  8⤵
                  • Creates scheduled task(s)
                  PID:1936
                • C:\Windows\system32\schtasks.exe
                  "schtasks" /create /tn "csrss" /sc ONLOGON /tr "'C:\PerfLogs\Admin\csrss.exe'" /rl HIGHEST /f
                  8⤵
                  • Creates scheduled task(s)
                  PID:1012
                • C:\Windows\system32\schtasks.exe
                  "schtasks" /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Users\Admin\Favorites\Links for United States\sppsvc.exe'" /rl HIGHEST /f
                  8⤵
                  • Creates scheduled task(s)
                  PID:856
                • C:\Windows\system32\schtasks.exe
                  "schtasks" /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\All Users\Mozilla\updates\308046B0AF4A39CB\csrss.exe'" /rl HIGHEST /f
                  8⤵
                  • Creates scheduled task(s)
                  PID:1540
                • C:\Windows\system32\schtasks.exe
                  "schtasks" /create /tn "taskhost" /sc ONLOGON /tr "'C:\PerfLogs\Admin\taskhost.exe'" /rl HIGHEST /f
                  8⤵
                  • Creates scheduled task(s)
                  PID:808
                • C:\PerfLogs\Admin\taskhost.exe
                  "C:\PerfLogs\Admin\taskhost.exe"
                  8⤵
                  • Executes dropped EXE
                  • Modifies system certificate store
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:956
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\monitordhcp\msg.vbs"
            5⤵
              PID:1616

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          taskhost.exe

          • Path C:\PerfLogs\Admin\taskhost.exe
          • Size 1.6MB
          • SHA256 4b111342f4fc80eb249bf89f3352b067d0591b9ffb24a74b49a301af5deef133
          • MD5 SHA1 SHA512 SSDEEP

          taskhost.exe

          • Path C:\PerfLogs\Admin\taskhost.exe
          • Size 1.6MB
          • SHA256 4b111342f4fc80eb249bf89f3352b067d0591b9ffb24a74b49a301af5deef133
          • MD5 SHA1 SHA512 SSDEEP

          3hvxTv4ZROtMpYMGDajjCJWH8roHGs.bat

          • Path C:\Users\Admin\AppData\Local\Temp\monitordhcp\3hvxTv4ZROtMpYMGDajjCJWH8roHGs.bat
          • Size 35B
          • SHA256 ecfc21fd14339226b1c2e0a40be6fe6c590ac05cab44b16e7db397f9471f4ddf
          • MD5 SHA1 SHA512

          4mdxDUI6yqvmVknEtk7bYzbiBR8MHO.vbe

          • Path C:\Users\Admin\AppData\Local\Temp\monitordhcp\4mdxDUI6yqvmVknEtk7bYzbiBR8MHO.vbe
          • Size 227B
          • SHA256 6ef2819df6d9e68e766c153dd3ada646d70c0f8cd1326c7dc2eff9b6f4681f5a
          • MD5 SHA1 SHA512

          FvrnkODJoiUIyeHAEoTP0Qn5ZC7TdH.vbe

          • Path C:\Users\Admin\AppData\Local\Temp\monitordhcp\FvrnkODJoiUIyeHAEoTP0Qn5ZC7TdH.vbe
          • Size 151B
          • SHA256 9505847a0d9c07c385abb1e236c5ef2d3763e69c9eb8d7faba37486d31e0827e
          • MD5 SHA1 SHA512

          MOS

          • Path C:\Users\Admin\AppData\Local\Temp\monitordhcp\MOS
          • Size 123B
          • SHA256 31f4fd990ffee590b8e3a70c66fdd7d18cb18869dea7d1a73a7e898c6d2e2a74
          • MD5 SHA1 SHA512

          RtgNSlMYtFvlTt52WHci.exe

          • Path C:\Users\Admin\AppData\Local\Temp\monitordhcp\RtgNSlMYtFvlTt52WHci.exe
          • Size 1.3MB
          • SHA256 d4ca9a4ea5d070206824a2b68921c4bdfa7bf038e0f82cfeb0472b17881fbcaf
          • MD5 SHA1 SHA512 SSDEEP

          RtgNSlMYtFvlTt52WHci.exe

          • Path C:\Users\Admin\AppData\Local\Temp\monitordhcp\RtgNSlMYtFvlTt52WHci.exe
          • Size 1.3MB
          • SHA256 d4ca9a4ea5d070206824a2b68921c4bdfa7bf038e0f82cfeb0472b17881fbcaf
          • MD5 SHA1 SHA512 SSDEEP

          msg.vbs

          • Path C:\Users\Admin\AppData\Local\Temp\monitordhcp\msg.vbs
          • Size 128B
          • SHA256 0401f2dd76d5ed6f90c82b72e1e7a122ef127bedbaf717532c4bba26d43a0061
          • MD5 SHA1 SHA512

          netmonitor.exe

          • Path C:\Users\Admin\AppData\Local\Temp\monitordhcp\netmonitor.exe
          • Size 1.6MB
          • SHA256 4b111342f4fc80eb249bf89f3352b067d0591b9ffb24a74b49a301af5deef133
          • MD5 SHA1 SHA512 SSDEEP

          netmonitor.exe

          • Path C:\Users\Admin\AppData\Local\Temp\monitordhcp\netmonitor.exe
          • Size 1.6MB
          • SHA256 4b111342f4fc80eb249bf89f3352b067d0591b9ffb24a74b49a301af5deef133
          • MD5 SHA1 SHA512 SSDEEP

          z1T7e01kTYgKk52k4EOgwkfTxey3zt.bat

          • Path C:\Users\Admin\AppData\Local\Temp\monitordhcp\z1T7e01kTYgKk52k4EOgwkfTxey3zt.bat
          • Size 625B
          • SHA256 72fc248e868a01f354f6d679389d7b75e6cb53212367221b9599c753a7abe095
          • MD5 SHA1 SHA512

          RtgNSlMYtFvlTt52WHci.exe

          • Path \Users\Admin\AppData\Local\Temp\monitordhcp\RtgNSlMYtFvlTt52WHci.exe
          • Size 1.3MB
          • SHA256 d4ca9a4ea5d070206824a2b68921c4bdfa7bf038e0f82cfeb0472b17881fbcaf
          • MD5 SHA1 SHA512 SSDEEP

          netmonitor.exe

          • Path \Users\Admin\AppData\Local\Temp\monitordhcp\netmonitor.exe
          • Size 1.6MB
          • SHA256 4b111342f4fc80eb249bf89f3352b067d0591b9ffb24a74b49a301af5deef133
          • MD5 SHA1 SHA512 SSDEEP

          memory/520-78-0x0000000000EA0000-0x0000000001048000-memory.dmp

          memory/520-79-0x0000000000280000-0x000000000029A000-memory.dmp

          memory/956-93-0x0000000000290000-0x00000000002AA000-memory.dmp

          memory/956-92-0x0000000000EB0000-0x0000000001058000-memory.dmp

          memory/2024-54-0x0000000075381000-0x0000000075383000-memory.dmp