Analysis

  • max time kernel
    149s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-08-2023 03:37

General

  • Target

    http://raagamayuribuilders.in/jastef

Malware Config

Extracted

Family

kutaki

C2

http://treysbeatend.com/laptop/squared.php

http://terebinnahicc.club/sec/kool.txt

Signatures

  • Kutaki

    Information stealer and keylogger that hides inside legitimate Visual Basic applications.

  • Drops startup file 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 12 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Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument http://raagamayuribuilders.in/jastef
    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:3500
    • 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=0xfc,0x100,0x104,0xd8,0x108,0x7ff8352d9758,0x7ff8352d9768,0x7ff8352d9778
      2⤵
        PID:1776
      • 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=1648 --field-trial-handle=1880,i,4742165303270089900,5974761941195223035,131072 /prefetch:2
        2⤵
          PID:2612
        • 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=2152 --field-trial-handle=1880,i,4742165303270089900,5974761941195223035,131072 /prefetch:8
          2⤵
            PID:4000
          • 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=2232 --field-trial-handle=1880,i,4742165303270089900,5974761941195223035,131072 /prefetch:8
            2⤵
              PID:2024
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --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=2860 --field-trial-handle=1880,i,4742165303270089900,5974761941195223035,131072 /prefetch:1
              2⤵
                PID:2008
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2892 --field-trial-handle=1880,i,4742165303270089900,5974761941195223035,131072 /prefetch:1
                2⤵
                  PID:3372
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --mojo-platform-channel-handle=4576 --field-trial-handle=1880,i,4742165303270089900,5974761941195223035,131072 /prefetch:1
                  2⤵
                    PID:1964
                  • 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=5328 --field-trial-handle=1880,i,4742165303270089900,5974761941195223035,131072 /prefetch:8
                    2⤵
                      PID:2480
                    • 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=3212 --field-trial-handle=1880,i,4742165303270089900,5974761941195223035,131072 /prefetch:8
                      2⤵
                        PID:3352
                      • 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=5356 --field-trial-handle=1880,i,4742165303270089900,5974761941195223035,131072 /prefetch:8
                        2⤵
                          PID:3656
                        • 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=10.0.19041.546 --gpu-preferences=UAAAAAAAAADoAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAACQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=988 --field-trial-handle=1880,i,4742165303270089900,5974761941195223035,131072 /prefetch:2
                          2⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:1984
                      • 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:2156
                        • C:\Windows\System32\rundll32.exe
                          C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                          1⤵
                            PID:3036
                          • C:\Users\Admin\AppData\Local\Temp\Temp1_NEFT_Copy.zip\NEFT_Copy.bat
                            "C:\Users\Admin\AppData\Local\Temp\Temp1_NEFT_Copy.zip\NEFT_Copy.bat"
                            1⤵
                            • Drops startup file
                            • Suspicious use of SetWindowsHookEx
                            PID:3220
                            • C:\Windows\SysWOW64\cmd.exe
                              cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                              2⤵
                                PID:2444
                              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dwjflgfk.exe
                                "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dwjflgfk.exe"
                                2⤵
                                • Executes dropped EXE
                                • Suspicious use of SetWindowsHookEx
                                PID:4496
                            • C:\Users\Admin\AppData\Local\Temp\Temp1_NEFT_Copy.zip\NEFT_Copy.bat
                              "C:\Users\Admin\AppData\Local\Temp\Temp1_NEFT_Copy.zip\NEFT_Copy.bat"
                              1⤵
                              • Drops startup file
                              • Suspicious use of SetWindowsHookEx
                              PID:4472
                              • C:\Windows\SysWOW64\cmd.exe
                                cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                                2⤵
                                  PID:2008
                                • C:\Windows\SysWOW64\taskkill.exe
                                  taskkill /im dwjflgfk.exe /f
                                  2⤵
                                  • Kills process with taskkill
                                  • Suspicious use of AdjustPrivilegeToken
                                  PID:3456
                                • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dwjflgfk.exe
                                  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dwjflgfk.exe"
                                  2⤵
                                  • Executes dropped EXE
                                  • Suspicious use of SetWindowsHookEx
                                  PID:3908

                              Network

                              MITRE ATT&CK Enterprise v15

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

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

                                Filesize

                                1009B

                                MD5

                                b7c94d9019e6ccfc944b8a091dab5a20

                                SHA1

                                eb5d705293e763948bb333b1917866c38a17576a

                                SHA256

                                3fe1eeae28ac1550673963910be0c4c5bcf812abe7d0b4e518fe145987d717fc

                                SHA512

                                5ef991689bb8ad8e5c4d40bad1042fd7c97f0b742e47b692b3866da0a822769b57b5256f21f12a597ba6a2d0d98b12ea7bf46b2dd3837b8ba982b53414bf143a

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

                                Filesize

                                705B

                                MD5

                                b2ce533ab0a1f6dbb3cf3111fbe1e1e4

                                SHA1

                                c39e22763a5a1a52ed7132a6a28e297e369e4695

                                SHA256

                                ee02fb6dd1dda5f3ef33d3dea549fd31d5466edb81601ef2a8c6bafe925aa77e

                                SHA512

                                36f8342b5e54f227fb49346cfc0961fff66550795d8004f63a2f03aa7c13a2afb7a63eea7deb8ece3af8ab12855be7f588247dbbf3d2b96b57349d295af10f53

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

                                Filesize

                                6KB

                                MD5

                                f02e1c9137d28d462afed794677fc9f9

                                SHA1

                                161be7ab1c1990c33183b39981d507327e729ed0

                                SHA256

                                0e0249fe4b283491752bdfbb593b952faec453ad8d1424dd75968bf016ad4d38

                                SHA512

                                927eadcd71ee32fbde30736cf464610d4a0a00cbf7b34b4f1a93b1a3c936c49d2222e525176ee41a082ce5df454f6603e7e76aa296e40361363a6adcd1617b2b

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

                                Filesize

                                87KB

                                MD5

                                11945efcdcdb93fd96818db1ffceca3f

                                SHA1

                                3cbe3e22bbf4ea21f9b81f536131a8ad63e24f4d

                                SHA256

                                b80c6b51d4185a4fd7648aab3b161cba9d2025c22edeac28ef43f65edd1e186f

                                SHA512

                                b916ab0800e3f9cef8e9fd15de50aac53dfa7f22dcf06df058e0da5ebc7006f4548a282735f776ec821eb4aa1ebd945cf1e4655ed92821095327e9fba13ebd13

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\persisted_first_party_sets.json

                                Filesize

                                2B

                                MD5

                                99914b932bd37a50b983c5e7c90ae93b

                                SHA1

                                bf21a9e8fbc5a3846fb05b4fa0859e0917b2202f

                                SHA256

                                44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a

                                SHA512

                                27c74670adb75075fad058d5ceaf7b20c4e7786c83bae8a32f626f9782af34c9a33c2046ef60fd2a7878d378e29fec851806bbd9a67878f3a9f1cda4830763fd

                              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dwjflgfk.exe

                                Filesize

                                2.3MB

                                MD5

                                9c153ac25f02739019b04b0a8ce82c4b

                                SHA1

                                64136c4238d140a6fb1ec542744ff90aba5bac09

                                SHA256

                                83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                SHA512

                                a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

                              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dwjflgfk.exe

                                Filesize

                                2.3MB

                                MD5

                                9c153ac25f02739019b04b0a8ce82c4b

                                SHA1

                                64136c4238d140a6fb1ec542744ff90aba5bac09

                                SHA256

                                83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                SHA512

                                a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

                              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dwjflgfk.exe

                                Filesize

                                2.3MB

                                MD5

                                9c153ac25f02739019b04b0a8ce82c4b

                                SHA1

                                64136c4238d140a6fb1ec542744ff90aba5bac09

                                SHA256

                                83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                SHA512

                                a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

                              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dwjflgfk.exe

                                Filesize

                                2.3MB

                                MD5

                                9c153ac25f02739019b04b0a8ce82c4b

                                SHA1

                                64136c4238d140a6fb1ec542744ff90aba5bac09

                                SHA256

                                83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                SHA512

                                a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

                              • C:\Users\Admin\Downloads\NEFT_Copy.zip

                                Filesize

                                2.1MB

                                MD5

                                d0f2c2de0407cefe7a24c8eb22237a61

                                SHA1

                                a46ba89e46a3d04fd9c919837441625ddaa4febe

                                SHA256

                                23d3f3b9c74b6707db237bdfa797d7425f18938614051ddb633712a42e7f3c96

                                SHA512

                                c59e010a958a1f714bd064592d6b0f26619b2efc879a1b8496d6132a598aa5edddec2e6537c34b1944893926f7664a989bf8df752f8bfffeabae4d3f7fbfb3e3