Analysis

  • max time kernel
    149s
  • max time network
    145s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-es
  • resource tags

    arch:x64arch:x86image:win10-20240404-eslocale:es-esos:windows10-1703-x64systemwindows
  • submitted
    05/08/2024, 13:16

General

  • Target

    https://docs.google.com/uc?export=download&id=1knVxlCl_7QAzDj0fWkdfW_hSHkNmZNk0

Malware Config

Extracted

Family

remcos

Botnet

FUERTES

C2

higlkgligliygligly.con-ip.com:1666

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-VQ2QTP

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 33 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 16 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument https://docs.google.com/uc?export=download&id=1knVxlCl_7QAzDj0fWkdfW_hSHkNmZNk0
    1⤵
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1380
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xb0,0xa8,0xd4,0xac,0xd8,0x7ff83b899758,0x7ff83b899768,0x7ff83b899778
      2⤵
        PID:1260
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1520 --field-trial-handle=1824,i,1468856297063766692,11808350085733870172,131072 /prefetch:2
        2⤵
          PID:1668
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1796 --field-trial-handle=1824,i,1468856297063766692,11808350085733870172,131072 /prefetch:8
          2⤵
            PID:2532
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2076 --field-trial-handle=1824,i,1468856297063766692,11808350085733870172,131072 /prefetch:8
            2⤵
              PID:4604
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2836 --field-trial-handle=1824,i,1468856297063766692,11808350085733870172,131072 /prefetch:1
              2⤵
                PID:1576
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2844 --field-trial-handle=1824,i,1468856297063766692,11808350085733870172,131072 /prefetch:1
                2⤵
                  PID:3668
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4404 --field-trial-handle=1824,i,1468856297063766692,11808350085733870172,131072 /prefetch:8
                  2⤵
                    PID:4620
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5104 --field-trial-handle=1824,i,1468856297063766692,11808350085733870172,131072 /prefetch:8
                    2⤵
                      PID:2476
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4352 --field-trial-handle=1824,i,1468856297063766692,11808350085733870172,131072 /prefetch:8
                      2⤵
                        PID:4308
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5156 --field-trial-handle=1824,i,1468856297063766692,11808350085733870172,131072 /prefetch:8
                        2⤵
                          PID:3376
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.15063.0 --gpu-preferences=UAAAAAAAAADoAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAACQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=3340 --field-trial-handle=1824,i,1468856297063766692,11808350085733870172,131072 /prefetch:2
                          2⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:924
                      • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                        "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                        1⤵
                          PID:4760
                        • C:\Windows\system32\OpenWith.exe
                          C:\Windows\system32\OpenWith.exe -Embedding
                          1⤵
                          • Modifies registry class
                          • Suspicious behavior: GetForegroundWindowSpam
                          • Suspicious use of SetWindowsHookEx
                          PID:1852
                        • C:\Windows\System32\rundll32.exe
                          C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                          1⤵
                            PID:2128
                          • C:\Program Files\7-Zip\7zFM.exe
                            "C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\Downloads\DOCUMENTO DE SOPORTE JUNIO.tar"
                            1⤵
                              PID:3516
                              • C:\Users\Admin\AppData\Local\Temp\7zOCBD46778\DOCUMENTO DE SOPORTE JUNIO.exe
                                "C:\Users\Admin\AppData\Local\Temp\7zOCBD46778\DOCUMENTO DE SOPORTE JUNIO.exe"
                                2⤵
                                • Adds Run key to start application
                                • System Location Discovery: System Language Discovery
                                PID:1236
                                • C:\Users\Admin\AppData\Local\Temp\7zOCBD46778\DOCUMENTO DE SOPORTE JUNIO.exe
                                  "C:\Users\Admin\AppData\Local\Temp\7zOCBD46778\DOCUMENTO DE SOPORTE JUNIO.exe"
                                  3⤵
                                  • System Location Discovery: System Language Discovery
                                  • Suspicious use of SetWindowsHookEx
                                  PID:4128

                            Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

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                            Downloads

                            • C:\ProgramData\remcos\logs.dat

                              Filesize

                              226B

                              MD5

                              98ebaf7c16aff69d1209c54b6c103b24

                              SHA1

                              276097e9035dae6d98ba64657a809975019cb395

                              SHA256

                              0e3c48bc4ccfe1a17df68549ad045538a56407a0d05fa79e9dc12b2dee338bda

                              SHA512

                              427efa7616a52d3b8173c4a8e8abd16c548c01657bef8481581db1313c3c7e8213bf140752e4070e54f523af225e5f1e042c2f871391da07216b37a06bda04c0

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\6fac5a6e-b382-40e2-b8d0-f85d0c5c38b0.tmp

                              Filesize

                              2B

                              MD5

                              99914b932bd37a50b983c5e7c90ae93b

                              SHA1

                              bf21a9e8fbc5a3846fb05b4fa0859e0917b2202f

                              SHA256

                              44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a

                              SHA512

                              27c74670adb75075fad058d5ceaf7b20c4e7786c83bae8a32f626f9782af34c9a33c2046ef60fd2a7878d378e29fec851806bbd9a67878f3a9f1cda4830763fd

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State

                              Filesize

                              879B

                              MD5

                              08ec42f7cd958f5f0377e20b44af23de

                              SHA1

                              405fb16deb25207555f961905dc5725ff765372f

                              SHA256

                              4bb75e99fe7b52c64070663c5929a2f71e4d4b8ee02611cb3909e4bf4b99bb65

                              SHA512

                              0eaef7e6db16163a76bcd145114bda8ce0e1a0ac827dc802f4b90e25a808c3691b5e37ac68aa1c0e7b7138f3a26988b6f04d510abcd7646bf54dbb3929192bc2

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity

                              Filesize

                              539B

                              MD5

                              7864dae5b8056382bf01489b49bf4237

                              SHA1

                              a898312ca998fb61d77379fbc114eaaa98fb84ed

                              SHA256

                              98a9cacb92440281df7cd7718c838261b87447a338c799f6dca498c1248dd422

                              SHA512

                              7f42c048214a2acfd8e3f77a0104e8c2d61af9cb5c515fbfd91c2d7134cb458ca9ac191adfe87f3062685ba79f41d16820c6dc182ede0aadadf6d3ff7cea3dc9

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                              Filesize

                              5KB

                              MD5

                              7e954f2498868a03b2aec526d33f8610

                              SHA1

                              dd3809faba71958e1e7e89ff7f23a63870b63464

                              SHA256

                              03fb6033c122d9c89f543a9b8a36229bfb952bff2efe02a0a7b2cd1f1083626c

                              SHA512

                              d18442a4209b6f2b5b8ac2871eebf997c3051c0eece0511c07fec34e75b73d22433c642c6914350d170aea79c9ca3991429baca5d4f1c267c812eef15459c2f5

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                              Filesize

                              6KB

                              MD5

                              8dfe490b615fcd50e388a68ef094d5cc

                              SHA1

                              711435611561d3eba26c8e711f06892dc14152bf

                              SHA256

                              5abc21840331fa1743f93824a9d9ebdd9070e683e10ee2fded7918ea4903e1bc

                              SHA512

                              7e6e91ff6d399cd44b36a53f2912b730056a6a9183f6406200d7d611f2dc73900ea41c3cfd25700daa857be19c1d40636151539b22146a90efd4c57985d48933

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                              Filesize

                              6KB

                              MD5

                              e8a2d23178216481f1518906c2e566cf

                              SHA1

                              5cd29526d61e77f4ad361bd1a548ad19c2f9ceec

                              SHA256

                              cf3a4d83a17d0c817fc06cd4e2676f84c3af0ebc38dc3518ec686299c1b7b6e8

                              SHA512

                              266d07a764fa28d212c75b02aec181d8a3570a20bbb7abd44b0d5c9cf3e4e72e6c47f53b655270880c9a8e33617b04d5c47d87fc5e357e7b3a107676e9b063e3

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                              Filesize

                              268KB

                              MD5

                              5cf72d931fb18e79ec5fbb1cf7b2b04c

                              SHA1

                              70d6819969e40cc1325ffb13062bbc270debf399

                              SHA256

                              1f56266968f5c6c94eb777d61d3e9aaa3c85f2f91219051a664589b2e213f8bb

                              SHA512

                              88ea7a82626848954e023963b719d44852a25ad2a9f8b695b015563ef9f12abffd671e6b6e5c49149411286e6bdaba8e92f72a8f17365df0549dce31330d2a52

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Module Info Cache

                              Filesize

                              106KB

                              MD5

                              db0acb3a61ffe395e6eca7eb478e7385

                              SHA1

                              d542758a94ab9113f08a2de52754d1542f3d2604

                              SHA256

                              bcf6406cf7c152d5966367d654252e80862eac855d61410fb27f0383497f2737

                              SHA512

                              b027dfb5926bc1d246fbd0e9eeaa40ecd35fff80580752a572c97aedf72621ac14ece5e7df97e0426a66045c748fc5f26cf1219f669602cb3fa640aff97ae388

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Module Info Cache~RFe57e04e.TMP

                              Filesize

                              102KB

                              MD5

                              b9f3a722a130bff9e0c6b6dd6e46adf4

                              SHA1

                              a95e69e20b68d833641a594dbba1d60e91fc9db9

                              SHA256

                              b05603fdd79270d613dc155775a740b3e5b1b735e8e7ce0c92f419df7e8f9a3b

                              SHA512

                              d4f9a7b2736ce7a5255c774c8cf4990aa2fb49d1c1ea3e0c07faef8945652338a4d4399ae3dff0811b4bbb9069875b0157b1549845669a01268980fd6bb23dd1

                            • C:\Users\Admin\Downloads\DOCUMENTO DE SOPORTE JUNIO.tar

                              Filesize

                              1007KB

                              MD5

                              afafcc0a01352ebd1d812d1df727946e

                              SHA1

                              62810f3eb5cef1adab205a1e99da87263dcaa703

                              SHA256

                              1881cdac2fd73d5b7e4422fdf2d2ff7388747daf53eaa8782361c3aa0987c583

                              SHA512

                              d93fc0ff8a9a8bc2b18000df6cb41dc0a159fb1df3ed0232536a29a0411224f2d7acc3db2b067c1fca28826c7303fc727ada70b913d1aa38eb81aa1fabb56019

                            • memory/1236-82-0x0000000000400000-0x000000000099B000-memory.dmp

                              Filesize

                              5.6MB

                            • memory/4128-85-0x00000000000D0000-0x0000000000152000-memory.dmp

                              Filesize

                              520KB

                            • memory/4128-89-0x00000000000D0000-0x0000000000152000-memory.dmp

                              Filesize

                              520KB

                            • memory/4128-88-0x00000000000D0000-0x0000000000152000-memory.dmp

                              Filesize

                              520KB

                            • memory/4128-84-0x00000000000D0000-0x0000000000152000-memory.dmp

                              Filesize

                              520KB

                            • memory/4128-108-0x00000000000D0000-0x0000000000152000-memory.dmp

                              Filesize

                              520KB

                            • memory/4128-109-0x00000000000D0000-0x0000000000152000-memory.dmp

                              Filesize

                              520KB

                            • memory/4128-83-0x00000000000D0000-0x0000000000152000-memory.dmp

                              Filesize

                              520KB

                            • memory/4128-114-0x00000000000D0000-0x0000000000152000-memory.dmp

                              Filesize

                              520KB

                            • memory/4128-115-0x00000000000D0000-0x0000000000152000-memory.dmp

                              Filesize

                              520KB

                            • memory/4128-123-0x00000000000D0000-0x0000000000152000-memory.dmp

                              Filesize

                              520KB

                            • memory/4128-124-0x00000000000D0000-0x0000000000152000-memory.dmp

                              Filesize

                              520KB