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Analysis

  • max time kernel
    120s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/02/2024, 14:48

General

  • Target

    PO_No_0013011100.exe

  • Size

    1.3MB

  • MD5

    b303f612505ca4e0f716f5c46ea4648d

  • SHA1

    d40300c34cb807ae7f40c9597c0ade63bb9d3921

  • SHA256

    d0cb6fe15a7104c380fdae815eca883d2167bab46d2a243c67f13200ff30ff75

  • SHA512

    0a2044e4dbe58a1378eac7316d521d014574ed570663305a71386e72d4f58878a10ec63006f4dc4db74ac4acf866086122c77179ca47b48318491ac7421677d7

  • SSDEEP

    24576:kH+bZn4eJDePreMta+dBZPGBAvPZsRDl4D0:kH7eJiPrVBZPGBJO

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

fsts.duckdns.org:1985

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    yiuhjg

  • mouse_option

    false

  • mutex

    Rmc-ZUDCLG

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Remcos

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

  • ModiLoader Second Stage 1 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Creates new service(s) 1 TTPs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Launches sc.exe 2 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Program crash 1 IoCs
  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Script User-Agent 2 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO_No_0013011100.exe
    "C:\Users\Admin\AppData\Local\Temp\PO_No_0013011100.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1544
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\ScnuiihvO.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3084
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c mkdir "\\?\C:\Windows "
        3⤵
          PID:4676
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
          3⤵
            PID:388
          • C:\Windows\SysWOW64\xcopy.exe
            xcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y
            3⤵
            • Enumerates system info in registry
            PID:4680
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
            3⤵
              PID:4412
            • C:\Windows\SysWOW64\xcopy.exe
              xcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y
              3⤵
              • Enumerates system info in registry
              PID:4104
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
              3⤵
                PID:384
              • C:\Windows\SysWOW64\xcopy.exe
                xcopy "KDECO.bat" "C:\Windows \System32\" /K /D /H /Y
                3⤵
                • Enumerates system info in registry
                PID:4924
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
                3⤵
                  PID:4520
                • C:\Windows\SysWOW64\xcopy.exe
                  xcopy "x.bat" "C:\Windows \System32\" /K /D /H /Y
                  3⤵
                  • Enumerates system info in registry
                  PID:4960
                • C:\Windows \System32\easinvoker.exe
                  "C:\\Windows \\System32\\easinvoker.exe"
                  3⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of WriteProcessMemory
                  PID:2532
                  • C:\Windows\system32\cmd.exe
                    C:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""
                    4⤵
                    • Suspicious use of WriteProcessMemory
                    PID:3960
                    • C:\Windows\system32\cmd.exe
                      cmd /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                      5⤵
                      • Suspicious use of WriteProcessMemory
                      PID:3588
                      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                        powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                        6⤵
                        • Suspicious use of AdjustPrivilegeToken
                        PID:3480
                    • C:\Windows\system32\sc.exe
                      sc.exe create truesight binPath="C:\Users\Public\Libraries\truesight.sys" type=kernel
                      5⤵
                      • Launches sc.exe
                      PID:1524
                    • C:\Windows\system32\sc.exe
                      sc.exe start truesight
                      5⤵
                      • Launches sc.exe
                      PID:2240
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c "C:\\Windows \\System32\\easinvoker.exe"
                2⤵
                • Suspicious use of WriteProcessMemory
                PID:3460
                • C:\Windows \System32\easinvoker.exe
                  "C:\\Windows \\System32\\easinvoker.exe"
                  3⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  PID:4920
              • C:\Windows\SysWOW64\colorcpl.exe
                C:\Windows\System32\colorcpl.exe
                2⤵
                • Suspicious use of SetThreadContext
                • Suspicious behavior: MapViewOfSection
                • Suspicious use of SetWindowsHookEx
                • Suspicious use of WriteProcessMemory
                PID:1088
                • C:\Windows\SysWOW64\colorcpl.exe
                  C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\htsosfsfedswraouyonpqwikvbs"
                  3⤵
                    PID:5044
                  • C:\Windows\SysWOW64\colorcpl.exe
                    C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\htsosfsfedswraouyonpqwikvbs"
                    3⤵
                      PID:2152
                    • C:\Windows\SysWOW64\colorcpl.exe
                      C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\htsosfsfedswraouyonpqwikvbs"
                      3⤵
                        PID:1700
                      • C:\Windows\SysWOW64\colorcpl.exe
                        C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\htsosfsfedswraouyonpqwikvbs"
                        3⤵
                          PID:3708
                        • C:\Windows\SysWOW64\colorcpl.exe
                          C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\jvxzsxdgalkbtokyqzzisadtehcvkrw"
                          3⤵
                          • Accesses Microsoft Outlook accounts
                          PID:968
                        • C:\Windows\SysWOW64\colorcpl.exe
                          C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\tplstqnaotcgeuyczjukdnyjfwuedcnmho"
                          3⤵
                          • Suspicious use of AdjustPrivilegeToken
                          PID:4356
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -u -p 1088 -s 1548
                          3⤵
                          • Program crash
                          PID:444
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1088 -ip 1088
                      1⤵
                        PID:4620

                      Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_oliy3k4n.lhh.ps1

                        Filesize

                        60B

                        MD5

                        d17fe0a3f47be24a6453e9ef58c94641

                        SHA1

                        6ab83620379fc69f80c0242105ddffd7d98d5d9d

                        SHA256

                        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

                        SHA512

                        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

                      • C:\Users\Admin\AppData\Local\Temp\htsosfsfedswraouyonpqwikvbs

                        Filesize

                        4KB

                        MD5

                        2d1f04bbec4105498024a5dfdcfb180c

                        SHA1

                        d4170467d4c53047d364a2406b5b0010b09b7652

                        SHA256

                        f37d5e9cc7e70656a4f30652378a52abd8ee067c4690e534fc9f5e33d8c2a7e7

                        SHA512

                        25717a3f1a1f0041127949a69ff288d4ff8eb66088cbd5ea3f8358cb78dad3456763aa41e3f8fe5381417c9e7c85980f37e017bfd7d7fd25414ca40302370a42

                      • C:\Users\Public\Libraries\KDECO.bat

                        Filesize

                        4KB

                        MD5

                        785e8193007bcd7858b9df41c9d45f89

                        SHA1

                        29b206de05ab075138ca9e0b9fccdddf3c30cdfe

                        SHA256

                        c8e1912a3328802e98563e32eb053ae3e28249b701054af227e9f1ba6bfe24d9

                        SHA512

                        a4d6fd586800f27939d8c152e89d2a231dc9fd8466e715dfeba22e2aa0428509095e12e6e66f2cb5e40ff5c998b439dc3f6792e20c179f41ac9cae31ada9d45f

                      • C:\Users\Public\Libraries\ScnuiihvO.bat

                        Filesize

                        7KB

                        MD5

                        0d0d24b46d4bb0e4962595d455020d48

                        SHA1

                        48b247c1cb2577b28aabd7dfa999e0642b5dc6de

                        SHA256

                        f46e0cc2c119a32dd87edf97bfc73d985ee97d2c9dc00274b6b20d641e29deea

                        SHA512

                        d5a8779e1cfd2a284173ce8a205cacb41fc7c744fa84e55682ac50b327c676ff50f668ecd176e0ab84420d143a8023d8b4590362b223704c55f5b0d7e116ba2c

                      • C:\Users\Public\Libraries\easinvoker.exe

                        Filesize

                        128KB

                        MD5

                        231ce1e1d7d98b44371ffff407d68b59

                        SHA1

                        25510d0f6353dbf0c9f72fc880de7585e34b28ff

                        SHA256

                        30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96

                        SHA512

                        520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612

                      • C:\Users\Public\Libraries\netutils.dll

                        Filesize

                        115KB

                        MD5

                        ecb0b0d16112f27c57e4048a02802fd5

                        SHA1

                        f7d1c76802d3948c55114fc0ea82c928936de944

                        SHA256

                        ae33f291a6f2011ca147c2b48035743aba3c507dcef86e1fa6acb4dee47cbf43

                        SHA512

                        a18a6cde621274f42e20b4b897df2df984a8e6d420d65198fd6d4193a3a91b8c3ca6905120ac299acd8758da72654e7a650e872425677763894b11c98f03c421

                      • memory/968-80-0x0000000000400000-0x0000000000457000-memory.dmp

                        Filesize

                        348KB

                      • memory/968-72-0x0000000000400000-0x0000000000457000-memory.dmp

                        Filesize

                        348KB

                      • memory/968-66-0x0000000000400000-0x0000000000457000-memory.dmp

                        Filesize

                        348KB

                      • memory/968-77-0x0000000000400000-0x0000000000457000-memory.dmp

                        Filesize

                        348KB

                      • memory/1088-54-0x00000000010E0000-0x00000000020E0000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/1088-52-0x00000000010E0000-0x00000000020E0000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/1088-88-0x0000000015480000-0x0000000015499000-memory.dmp

                        Filesize

                        100KB

                      • memory/1088-47-0x00000000010E0000-0x00000000020E0000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/1088-58-0x00000000010E0000-0x00000000020E0000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/1088-59-0x00000000010E0000-0x00000000020E0000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/1088-85-0x0000000015480000-0x0000000015499000-memory.dmp

                        Filesize

                        100KB

                      • memory/1088-50-0x00000000010E0000-0x00000000020E0000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/1088-51-0x00000000010E0000-0x00000000020E0000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/1088-89-0x00000000010E0000-0x00000000020E0000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/1088-53-0x00000000010E0000-0x00000000020E0000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/1088-57-0x00000000010E0000-0x00000000020E0000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/1088-55-0x00000000010E0000-0x00000000020E0000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/1088-56-0x00000000010E0000-0x00000000020E0000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/1544-1-0x0000000004620000-0x0000000005620000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/1544-4-0x0000000000400000-0x0000000000558000-memory.dmp

                        Filesize

                        1.3MB

                      • memory/1544-0-0x0000000002410000-0x0000000002411000-memory.dmp

                        Filesize

                        4KB

                      • memory/1544-2-0x0000000004620000-0x0000000005620000-memory.dmp

                        Filesize

                        16.0MB

                      • memory/2532-25-0x00000000613C0000-0x00000000613E3000-memory.dmp

                        Filesize

                        140KB

                      • memory/3480-36-0x0000025DFBDC0000-0x0000025DFBDE2000-memory.dmp

                        Filesize

                        136KB

                      • memory/3480-37-0x00007FFE2C320000-0x00007FFE2CDE1000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/3480-38-0x0000025DF95D0000-0x0000025DF95E0000-memory.dmp

                        Filesize

                        64KB

                      • memory/3480-39-0x0000025DF95D0000-0x0000025DF95E0000-memory.dmp

                        Filesize

                        64KB

                      • memory/3480-41-0x00007FFE2C320000-0x00007FFE2CDE1000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/3708-83-0x0000000000400000-0x0000000000478000-memory.dmp

                        Filesize

                        480KB

                      • memory/3708-67-0x0000000000400000-0x0000000000478000-memory.dmp

                        Filesize

                        480KB

                      • memory/3708-73-0x0000000000400000-0x0000000000478000-memory.dmp

                        Filesize

                        480KB

                      • memory/3708-64-0x0000000000400000-0x0000000000478000-memory.dmp

                        Filesize

                        480KB

                      • memory/4356-78-0x0000000000400000-0x0000000000424000-memory.dmp

                        Filesize

                        144KB

                      • memory/4356-81-0x0000000000400000-0x0000000000424000-memory.dmp

                        Filesize

                        144KB

                      • memory/4356-79-0x0000000000400000-0x0000000000424000-memory.dmp

                        Filesize

                        144KB

                      • memory/4356-69-0x0000000000400000-0x0000000000424000-memory.dmp

                        Filesize

                        144KB

                      • memory/4920-46-0x00000000613C0000-0x00000000613E3000-memory.dmp

                        Filesize

                        140KB