Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    20-01-2021 06:39

General

  • Target

    CV Muhammad Arman Badar.xlsx

  • Size

    2.1MB

  • MD5

    99ad00bbe8928d094546b5b402aadaba

  • SHA1

    bcd91ef8ae9fbf2a2a4118d4505caf6afdf9915c

  • SHA256

    48a52a8f34c3943f3699e852ac10b96cdd92311be6980a7d86b9654cae8eca84

  • SHA512

    2d14ac42718b7a3ae73c3645d0eded2681129cba40ed2ed728781414936e851a61df0d85bd20efd74dac80d248d4971f3591eb0ac644461b84d23aa39f18be17

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.

  • Blocklisted process makes network request 1 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 9 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 16 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Program crash 1 IoCs
  • Delays execution with timeout.exe 6 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 9 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 90 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\CV Muhammad Arman Badar.xlsx"
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:1888
  • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
    "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
    1⤵
    • Blocklisted process makes network request
    • Loads dropped DLL
    • Launches Equation Editor
    • Suspicious use of WriteProcessMemory
    PID:1952
    • C:\Users\Public\vbc.exe
      "C:\Users\Public\vbc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:832
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout 1
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1624
        • C:\Windows\SysWOW64\timeout.exe
          timeout 1
          4⤵
          • Delays execution with timeout.exe
          PID:1068
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout 1
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1584
        • C:\Windows\SysWOW64\timeout.exe
          timeout 1
          4⤵
          • Delays execution with timeout.exe
          PID:1748
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout 1
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1276
        • C:\Windows\SysWOW64\timeout.exe
          timeout 1
          4⤵
          • Delays execution with timeout.exe
          PID:460
      • C:\Users\Public\vbc.exe
        "C:\Users\Public\vbc.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:1876
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:548
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\win.exe"
            5⤵
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:1632
            • C:\Users\Admin\AppData\Roaming\win.exe
              C:\Users\Admin\AppData\Roaming\win.exe
              6⤵
              • Executes dropped EXE
              • Suspicious use of NtSetInformationThreadHideFromDebugger
              • Suspicious use of SetThreadContext
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:1580
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout 1
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:1340
                • C:\Windows\SysWOW64\timeout.exe
                  timeout 1
                  8⤵
                  • Delays execution with timeout.exe
                  PID:856
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout 1
                7⤵
                  PID:1320
                  • C:\Windows\SysWOW64\timeout.exe
                    timeout 1
                    8⤵
                    • Delays execution with timeout.exe
                    PID:1128
                • C:\Windows\SysWOW64\cmd.exe
                  "C:\Windows\System32\cmd.exe" /c timeout 1
                  7⤵
                    PID:1604
                    • C:\Windows\SysWOW64\timeout.exe
                      timeout 1
                      8⤵
                      • Delays execution with timeout.exe
                      PID:1068
                  • C:\Users\Admin\AppData\Roaming\win.exe
                    "C:\Users\Admin\AppData\Roaming\win.exe"
                    7⤵
                    • Executes dropped EXE
                    • Adds Run key to start application
                    • Suspicious use of SetWindowsHookEx
                    PID:1892
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 832 -s 948
            3⤵
            • Loads dropped DLL
            • Program crash
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1924

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Execution

      Scripting

      1
      T1064

      Exploitation for Client Execution

      1
      T1203

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Defense Evasion

      Scripting

      1
      T1064

      Modify Registry

      2
      T1112

      Discovery

      Query Registry

      1
      T1012

      System Information Discovery

      1
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\install.vbs
        MD5

        4a74e626596d6e66b4bbc59ee6848f2d

        SHA1

        047849ac8735ecc0943428c7cd5e00b52eee06ed

        SHA256

        98bd6dc219a7a3e04d3d67bbec9f0b4d4640831a3a6be0a0078b050041088b0e

        SHA512

        1cd943482d0f1ce2ffaf6ee4a82895e4d57c52051bb14bbda0548cf072b4c5cbe719d2cdb549b5ae7c0241dd9c68dd9d1674acd26aed684b8145500079cc5403

      • C:\Users\Admin\AppData\Roaming\win.exe
        MD5

        823f0fa14ac82cd2e7629ba0b49a7a04

        SHA1

        44736f3a1d9221cf2c000e157964047764ea3ace

        SHA256

        1825b54eda603a6b759fa3dc437579ce353c1f736968d3cfc6f17ee6284350cb

        SHA512

        01fc4d0270a65a6f19fe3bd346491535593975723c5df4118774ba7f225ecd4fcd728b9b8703bc89dcfe1ea1136aeabb7b33ec2c1dc4c1b4ef09918c46c048d2

      • C:\Users\Admin\AppData\Roaming\win.exe
        MD5

        823f0fa14ac82cd2e7629ba0b49a7a04

        SHA1

        44736f3a1d9221cf2c000e157964047764ea3ace

        SHA256

        1825b54eda603a6b759fa3dc437579ce353c1f736968d3cfc6f17ee6284350cb

        SHA512

        01fc4d0270a65a6f19fe3bd346491535593975723c5df4118774ba7f225ecd4fcd728b9b8703bc89dcfe1ea1136aeabb7b33ec2c1dc4c1b4ef09918c46c048d2

      • C:\Users\Admin\AppData\Roaming\win.exe
        MD5

        823f0fa14ac82cd2e7629ba0b49a7a04

        SHA1

        44736f3a1d9221cf2c000e157964047764ea3ace

        SHA256

        1825b54eda603a6b759fa3dc437579ce353c1f736968d3cfc6f17ee6284350cb

        SHA512

        01fc4d0270a65a6f19fe3bd346491535593975723c5df4118774ba7f225ecd4fcd728b9b8703bc89dcfe1ea1136aeabb7b33ec2c1dc4c1b4ef09918c46c048d2

      • C:\Users\Public\vbc.exe
        MD5

        823f0fa14ac82cd2e7629ba0b49a7a04

        SHA1

        44736f3a1d9221cf2c000e157964047764ea3ace

        SHA256

        1825b54eda603a6b759fa3dc437579ce353c1f736968d3cfc6f17ee6284350cb

        SHA512

        01fc4d0270a65a6f19fe3bd346491535593975723c5df4118774ba7f225ecd4fcd728b9b8703bc89dcfe1ea1136aeabb7b33ec2c1dc4c1b4ef09918c46c048d2

      • C:\Users\Public\vbc.exe
        MD5

        823f0fa14ac82cd2e7629ba0b49a7a04

        SHA1

        44736f3a1d9221cf2c000e157964047764ea3ace

        SHA256

        1825b54eda603a6b759fa3dc437579ce353c1f736968d3cfc6f17ee6284350cb

        SHA512

        01fc4d0270a65a6f19fe3bd346491535593975723c5df4118774ba7f225ecd4fcd728b9b8703bc89dcfe1ea1136aeabb7b33ec2c1dc4c1b4ef09918c46c048d2

      • C:\Users\Public\vbc.exe
        MD5

        823f0fa14ac82cd2e7629ba0b49a7a04

        SHA1

        44736f3a1d9221cf2c000e157964047764ea3ace

        SHA256

        1825b54eda603a6b759fa3dc437579ce353c1f736968d3cfc6f17ee6284350cb

        SHA512

        01fc4d0270a65a6f19fe3bd346491535593975723c5df4118774ba7f225ecd4fcd728b9b8703bc89dcfe1ea1136aeabb7b33ec2c1dc4c1b4ef09918c46c048d2

      • \Users\Admin\AppData\Roaming\win.exe
        MD5

        823f0fa14ac82cd2e7629ba0b49a7a04

        SHA1

        44736f3a1d9221cf2c000e157964047764ea3ace

        SHA256

        1825b54eda603a6b759fa3dc437579ce353c1f736968d3cfc6f17ee6284350cb

        SHA512

        01fc4d0270a65a6f19fe3bd346491535593975723c5df4118774ba7f225ecd4fcd728b9b8703bc89dcfe1ea1136aeabb7b33ec2c1dc4c1b4ef09918c46c048d2

      • \Users\Admin\AppData\Roaming\win.exe
        MD5

        823f0fa14ac82cd2e7629ba0b49a7a04

        SHA1

        44736f3a1d9221cf2c000e157964047764ea3ace

        SHA256

        1825b54eda603a6b759fa3dc437579ce353c1f736968d3cfc6f17ee6284350cb

        SHA512

        01fc4d0270a65a6f19fe3bd346491535593975723c5df4118774ba7f225ecd4fcd728b9b8703bc89dcfe1ea1136aeabb7b33ec2c1dc4c1b4ef09918c46c048d2

      • \Users\Public\vbc.exe
        MD5

        823f0fa14ac82cd2e7629ba0b49a7a04

        SHA1

        44736f3a1d9221cf2c000e157964047764ea3ace

        SHA256

        1825b54eda603a6b759fa3dc437579ce353c1f736968d3cfc6f17ee6284350cb

        SHA512

        01fc4d0270a65a6f19fe3bd346491535593975723c5df4118774ba7f225ecd4fcd728b9b8703bc89dcfe1ea1136aeabb7b33ec2c1dc4c1b4ef09918c46c048d2

      • \Users\Public\vbc.exe
        MD5

        823f0fa14ac82cd2e7629ba0b49a7a04

        SHA1

        44736f3a1d9221cf2c000e157964047764ea3ace

        SHA256

        1825b54eda603a6b759fa3dc437579ce353c1f736968d3cfc6f17ee6284350cb

        SHA512

        01fc4d0270a65a6f19fe3bd346491535593975723c5df4118774ba7f225ecd4fcd728b9b8703bc89dcfe1ea1136aeabb7b33ec2c1dc4c1b4ef09918c46c048d2

      • \Users\Public\vbc.exe
        MD5

        823f0fa14ac82cd2e7629ba0b49a7a04

        SHA1

        44736f3a1d9221cf2c000e157964047764ea3ace

        SHA256

        1825b54eda603a6b759fa3dc437579ce353c1f736968d3cfc6f17ee6284350cb

        SHA512

        01fc4d0270a65a6f19fe3bd346491535593975723c5df4118774ba7f225ecd4fcd728b9b8703bc89dcfe1ea1136aeabb7b33ec2c1dc4c1b4ef09918c46c048d2

      • \Users\Public\vbc.exe
        MD5

        823f0fa14ac82cd2e7629ba0b49a7a04

        SHA1

        44736f3a1d9221cf2c000e157964047764ea3ace

        SHA256

        1825b54eda603a6b759fa3dc437579ce353c1f736968d3cfc6f17ee6284350cb

        SHA512

        01fc4d0270a65a6f19fe3bd346491535593975723c5df4118774ba7f225ecd4fcd728b9b8703bc89dcfe1ea1136aeabb7b33ec2c1dc4c1b4ef09918c46c048d2

      • \Users\Public\vbc.exe
        MD5

        823f0fa14ac82cd2e7629ba0b49a7a04

        SHA1

        44736f3a1d9221cf2c000e157964047764ea3ace

        SHA256

        1825b54eda603a6b759fa3dc437579ce353c1f736968d3cfc6f17ee6284350cb

        SHA512

        01fc4d0270a65a6f19fe3bd346491535593975723c5df4118774ba7f225ecd4fcd728b9b8703bc89dcfe1ea1136aeabb7b33ec2c1dc4c1b4ef09918c46c048d2

      • \Users\Public\vbc.exe
        MD5

        823f0fa14ac82cd2e7629ba0b49a7a04

        SHA1

        44736f3a1d9221cf2c000e157964047764ea3ace

        SHA256

        1825b54eda603a6b759fa3dc437579ce353c1f736968d3cfc6f17ee6284350cb

        SHA512

        01fc4d0270a65a6f19fe3bd346491535593975723c5df4118774ba7f225ecd4fcd728b9b8703bc89dcfe1ea1136aeabb7b33ec2c1dc4c1b4ef09918c46c048d2

      • \Users\Public\vbc.exe
        MD5

        823f0fa14ac82cd2e7629ba0b49a7a04

        SHA1

        44736f3a1d9221cf2c000e157964047764ea3ace

        SHA256

        1825b54eda603a6b759fa3dc437579ce353c1f736968d3cfc6f17ee6284350cb

        SHA512

        01fc4d0270a65a6f19fe3bd346491535593975723c5df4118774ba7f225ecd4fcd728b9b8703bc89dcfe1ea1136aeabb7b33ec2c1dc4c1b4ef09918c46c048d2

      • memory/460-24-0x0000000000000000-mapping.dmp
      • memory/548-29-0x0000000000000000-mapping.dmp
      • memory/548-40-0x0000000002680000-0x0000000002684000-memory.dmp
        Filesize

        16KB

      • memory/832-15-0x0000000000100000-0x0000000000101000-memory.dmp
        Filesize

        4KB

      • memory/832-17-0x00000000004F0000-0x000000000051F000-memory.dmp
        Filesize

        188KB

      • memory/832-20-0x00000000021E0000-0x00000000021E1000-memory.dmp
        Filesize

        4KB

      • memory/832-11-0x0000000000000000-mapping.dmp
      • memory/832-14-0x000000006C260000-0x000000006C94E000-memory.dmp
        Filesize

        6.9MB

      • memory/856-51-0x0000000000000000-mapping.dmp
      • memory/1068-56-0x0000000000000000-mapping.dmp
      • memory/1068-19-0x0000000000000000-mapping.dmp
      • memory/1128-54-0x0000000000000000-mapping.dmp
      • memory/1276-23-0x0000000000000000-mapping.dmp
      • memory/1320-53-0x0000000000000000-mapping.dmp
      • memory/1340-50-0x0000000000000000-mapping.dmp
      • memory/1580-44-0x0000000000000000-mapping.dmp
      • memory/1580-52-0x00000000050C0000-0x00000000050C1000-memory.dmp
        Filesize

        4KB

      • memory/1580-47-0x0000000000D80000-0x0000000000D81000-memory.dmp
        Filesize

        4KB

      • memory/1580-46-0x000000006C260000-0x000000006C94E000-memory.dmp
        Filesize

        6.9MB

      • memory/1584-21-0x0000000000000000-mapping.dmp
      • memory/1604-55-0x0000000000000000-mapping.dmp
      • memory/1624-18-0x0000000000000000-mapping.dmp
      • memory/1632-39-0x0000000000000000-mapping.dmp
      • memory/1700-6-0x000007FEF5FA0000-0x000007FEF621A000-memory.dmp
        Filesize

        2.5MB

      • memory/1748-22-0x0000000000000000-mapping.dmp
      • memory/1876-26-0x0000000000413FA4-mapping.dmp
      • memory/1876-37-0x0000000000400000-0x0000000000421000-memory.dmp
        Filesize

        132KB

      • memory/1876-25-0x0000000000400000-0x0000000000421000-memory.dmp
        Filesize

        132KB

      • memory/1888-2-0x000000002F831000-0x000000002F834000-memory.dmp
        Filesize

        12KB

      • memory/1888-4-0x000000005FFF0000-0x0000000060000000-memory.dmp
        Filesize

        64KB

      • memory/1888-3-0x0000000071271000-0x0000000071273000-memory.dmp
        Filesize

        8KB

      • memory/1892-58-0x0000000000413FA4-mapping.dmp
      • memory/1892-61-0x0000000000400000-0x0000000000421000-memory.dmp
        Filesize

        132KB

      • memory/1924-38-0x0000000000400000-0x0000000000401000-memory.dmp
        Filesize

        4KB

      • memory/1924-33-0x0000000001F60000-0x0000000001F71000-memory.dmp
        Filesize

        68KB

      • memory/1924-31-0x0000000000000000-mapping.dmp
      • memory/1952-5-0x0000000075781000-0x0000000075783000-memory.dmp
        Filesize

        8KB