Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    15/01/2021, 12:47

General

  • Target
    SecuriteInfo.com.Generic.mg.8a16967ee620b6d5.22788.exe
  • Size 1.3MB
  • Sample210115-rclnyws69e
  • SHA256 f64dfe37f4518739d7d31f0a81cc8a126d6766ca16039b3f80a50495efd6d765
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Family
  • remcos

C2
  • wedsazxcvfghyuiokjhbnvfcdsaweyplmhbvrtud.ydns.eu:1996

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 24 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Program crash 2 IoCs
  • Delays execution with timeout.exe 6 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 40 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 71 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Generic.mg.8a16967ee620b6d5.22788.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Generic.mg.8a16967ee620b6d5.22788.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:508
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3556
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:2824
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2608
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:4012
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1836
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:3808
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Generic.mg.8a16967ee620b6d5.22788.exe
      "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Generic.mg.8a16967ee620b6d5.22788.exe"
      2⤵
        PID:1172
      • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Generic.mg.8a16967ee620b6d5.22788.exe
        "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Generic.mg.8a16967ee620b6d5.22788.exe"
        2⤵
          PID:1312
        • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Generic.mg.8a16967ee620b6d5.22788.exe
          "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Generic.mg.8a16967ee620b6d5.22788.exe"
          2⤵
          • Adds Run key to start application
          • Modifies registry class
          • Suspicious use of WriteProcessMemory
          PID:1168
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:2336
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\win.exe"
              4⤵
              • Suspicious use of WriteProcessMemory
              PID:3120
              • C:\Users\Admin\AppData\Roaming\win.exe
                C:\Users\Admin\AppData\Roaming\win.exe
                5⤵
                • Executes dropped EXE
                • Suspicious use of NtSetInformationThreadHideFromDebugger
                • Suspicious use of SetThreadContext
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:2012
                • C:\Windows\SysWOW64\cmd.exe
                  "C:\Windows\System32\cmd.exe" /c timeout 1
                  6⤵
                  • Suspicious use of WriteProcessMemory
                  PID:60
                  • C:\Windows\SysWOW64\timeout.exe
                    timeout 1
                    7⤵
                    • Delays execution with timeout.exe
                    PID:2896
                • C:\Windows\SysWOW64\cmd.exe
                  "C:\Windows\System32\cmd.exe" /c timeout 1
                  6⤵
                  • Suspicious use of WriteProcessMemory
                  PID:3904
                  • C:\Windows\SysWOW64\timeout.exe
                    timeout 1
                    7⤵
                    • Delays execution with timeout.exe
                    PID:1232
                • C:\Windows\SysWOW64\cmd.exe
                  "C:\Windows\System32\cmd.exe" /c timeout 1
                  6⤵
                  • Suspicious use of WriteProcessMemory
                  PID:3772
                  • C:\Windows\SysWOW64\timeout.exe
                    timeout 1
                    7⤵
                    • Delays execution with timeout.exe
                    PID:724
                • C:\Users\Admin\AppData\Roaming\win.exe
                  "C:\Users\Admin\AppData\Roaming\win.exe"
                  6⤵
                  • Executes dropped EXE
                  • Adds Run key to start application
                  • Suspicious behavior: GetForegroundWindowSpam
                  • Suspicious use of SetWindowsHookEx
                  PID:2508
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 2012 -s 1552
                  6⤵
                  • Program crash
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:3452
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 508 -s 1528
          2⤵
          • Program crash
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:648

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            memory/508-8-0x0000000005220000-0x0000000005221000-memory.dmp

            memory/508-6-0x00000000055C0000-0x00000000055C1000-memory.dmp

            memory/508-3-0x00000000006D0000-0x00000000006D1000-memory.dmp

            memory/508-9-0x00000000053E0000-0x000000000540F000-memory.dmp

            memory/508-7-0x0000000005260000-0x0000000005261000-memory.dmp

            memory/508-5-0x0000000005020000-0x0000000005021000-memory.dmp

            memory/508-2-0x0000000073520000-0x0000000073C0E000-memory.dmp

            memory/648-21-0x0000000004690000-0x0000000004691000-memory.dmp

            memory/1168-16-0x0000000000400000-0x0000000000421000-memory.dmp

            memory/1168-18-0x0000000000400000-0x0000000000421000-memory.dmp

            memory/2012-28-0x0000000073520000-0x0000000073C0E000-memory.dmp

            memory/2508-45-0x0000000000400000-0x0000000000421000-memory.dmp

            memory/3452-46-0x0000000004770000-0x0000000004771000-memory.dmp