Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09/11/2020, 19:47

General

  • Target
    PurchaseOrder#821556_MAY_new_order_products_Tin_Thao_Co.exe
  • Size 557KB
  • Sample201109-c5hg2cppdx
  • SHA256 f89c8debd5a5759bd372622cf7be54424d5e87c8b8246fb44835ea94d1f72bad
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Family
  • remcos

C2
  • 194.5.97.48:2404

Signatures

  • Remcos

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

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 27 IoCs
  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious behavior: MapViewOfSection 14 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 224 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PurchaseOrder#821556_MAY_new_order_products_Tin_Thao_Co.exe
    "C:\Users\Admin\AppData\Local\Temp\PurchaseOrder#821556_MAY_new_order_products_Tin_Thao_Co.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:744
    • C:\Users\Admin\AppData\Local\Temp\PurchaseOrder#821556_MAY_new_order_products_Tin_Thao_Co.exe
      "C:\Users\Admin\AppData\Local\Temp\PurchaseOrder#821556_MAY_new_order_products_Tin_Thao_Co.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:1664
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1124
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\remcos\remcos.exe"
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:1516
          • C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
            C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:652
            • C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
              C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • Suspicious use of SetThreadContext
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:1060
              • C:\Windows\SysWOW64\svchost.exe
                C:\Windows\SysWOW64\svchost.exe
                7⤵
                • Suspicious use of SetThreadContext
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious behavior: MapViewOfSection
                • Suspicious use of WriteProcessMemory
                PID:784
                • C:\Windows\SysWOW64\svchost.exe
                  C:\Windows\SysWOW64\svchost.exe
                  8⤵
                    PID:552
                • C:\Windows\SysWOW64\svchost.exe
                  C:\Windows\SysWOW64\svchost.exe
                  7⤵
                  • Suspicious use of SetThreadContext
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious behavior: MapViewOfSection
                  • Suspicious use of WriteProcessMemory
                  PID:1248
                  • C:\Windows\SysWOW64\svchost.exe
                    C:\Windows\SysWOW64\svchost.exe
                    8⤵
                      PID:1140
                  • C:\Windows\SysWOW64\svchost.exe
                    C:\Windows\SysWOW64\svchost.exe
                    7⤵
                    • Suspicious use of SetThreadContext
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious behavior: MapViewOfSection
                    PID:828
                    • C:\Windows\SysWOW64\svchost.exe
                      C:\Windows\SysWOW64\svchost.exe
                      8⤵
                        PID:1380
                    • C:\Windows\SysWOW64\svchost.exe
                      C:\Windows\SysWOW64\svchost.exe
                      7⤵
                      • Suspicious use of SetThreadContext
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious behavior: MapViewOfSection
                      PID:1312
                      • C:\Windows\SysWOW64\svchost.exe
                        C:\Windows\SysWOW64\svchost.exe
                        8⤵
                          PID:1684
                      • C:\Windows\SysWOW64\svchost.exe
                        C:\Windows\SysWOW64\svchost.exe
                        7⤵
                        • Suspicious use of SetThreadContext
                        • Suspicious behavior: EnumeratesProcesses
                        • Suspicious behavior: MapViewOfSection
                        PID:1576
                        • C:\Windows\SysWOW64\svchost.exe
                          C:\Windows\SysWOW64\svchost.exe
                          8⤵
                            PID:1996
                        • C:\Windows\SysWOW64\svchost.exe
                          C:\Windows\SysWOW64\svchost.exe
                          7⤵
                          • Suspicious use of SetThreadContext
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious behavior: MapViewOfSection
                          PID:1428
                          • C:\Windows\SysWOW64\svchost.exe
                            C:\Windows\SysWOW64\svchost.exe
                            8⤵
                              PID:1340
                          • C:\Windows\SysWOW64\svchost.exe
                            C:\Windows\SysWOW64\svchost.exe
                            7⤵
                            • Suspicious use of SetThreadContext
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious behavior: MapViewOfSection
                            PID:1904
                            • C:\Windows\SysWOW64\svchost.exe
                              C:\Windows\SysWOW64\svchost.exe
                              8⤵
                                PID:1564
                            • C:\Windows\SysWOW64\svchost.exe
                              C:\Windows\SysWOW64\svchost.exe
                              7⤵
                              • Suspicious use of SetThreadContext
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious behavior: MapViewOfSection
                              PID:316
                              • C:\Windows\SysWOW64\svchost.exe
                                C:\Windows\SysWOW64\svchost.exe
                                8⤵
                                  PID:756
                              • C:\Windows\SysWOW64\svchost.exe
                                C:\Windows\SysWOW64\svchost.exe
                                7⤵
                                • Suspicious use of SetThreadContext
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious behavior: MapViewOfSection
                                PID:1992
                                • C:\Windows\SysWOW64\svchost.exe
                                  C:\Windows\SysWOW64\svchost.exe
                                  8⤵
                                    PID:1544
                                • C:\Windows\SysWOW64\svchost.exe
                                  C:\Windows\SysWOW64\svchost.exe
                                  7⤵
                                  • Suspicious use of SetThreadContext
                                  • Suspicious behavior: EnumeratesProcesses
                                  • Suspicious behavior: MapViewOfSection
                                  PID:968
                                  • C:\Windows\SysWOW64\svchost.exe
                                    C:\Windows\SysWOW64\svchost.exe
                                    8⤵
                                      PID:856
                                  • C:\Windows\SysWOW64\svchost.exe
                                    C:\Windows\SysWOW64\svchost.exe
                                    7⤵
                                    • Suspicious use of SetThreadContext
                                    • Suspicious behavior: EnumeratesProcesses
                                    • Suspicious behavior: MapViewOfSection
                                    PID:1516
                                    • C:\Windows\SysWOW64\svchost.exe
                                      C:\Windows\SysWOW64\svchost.exe
                                      8⤵
                                        PID:872
                                    • C:\Windows\SysWOW64\svchost.exe
                                      C:\Windows\SysWOW64\svchost.exe
                                      7⤵
                                      • Suspicious use of SetThreadContext
                                      • Suspicious behavior: EnumeratesProcesses
                                      • Suspicious behavior: MapViewOfSection
                                      PID:1388
                                      • C:\Windows\SysWOW64\svchost.exe
                                        C:\Windows\SysWOW64\svchost.exe
                                        8⤵
                                          PID:940
                                      • C:\Windows\SysWOW64\svchost.exe
                                        C:\Windows\SysWOW64\svchost.exe
                                        7⤵
                                        • Suspicious behavior: EnumeratesProcesses
                                        PID:1444

                          Network

                                MITRE ATT&CK Enterprise v6

                                Replay Monitor

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                                Downloads

                                memory/784-16-0x0000000000400000-0x0000000000492000-memory.dmp

                                memory/784-18-0x0000000000400000-0x0000000000492000-memory.dmp

                                memory/1060-15-0x0000000000400000-0x0000000000420000-memory.dmp

                                memory/1124-6-0x0000000002840000-0x0000000002844000-memory.dmp

                                memory/1248-23-0x0000000000400000-0x0000000000492000-memory.dmp

                                memory/1664-2-0x0000000000400000-0x0000000000420000-memory.dmp

                                memory/1664-0-0x0000000000400000-0x0000000000420000-memory.dmp