Analysis

  • max time kernel
    150s
  • max time network
    149s
  • 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 03:38

General

  • Target

    http://raagamayuribuilders.in/kautgk

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 35 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Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument http://raagamayuribuilders.in/kautgk
    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:1444
    • 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,0x100,0x104,0x40,0x108,0x7ffeb3109758,0x7ffeb3109768,0x7ffeb3109778
      2⤵
        PID:1216
      • 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=1724 --field-trial-handle=1880,i,12856117168432595091,6033205210492207873,131072 /prefetch:2
        2⤵
          PID:1852
        • 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=2144 --field-trial-handle=1880,i,12856117168432595091,6033205210492207873,131072 /prefetch:8
          2⤵
            PID:3988
          • 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=2208 --field-trial-handle=1880,i,12856117168432595091,6033205210492207873,131072 /prefetch:8
            2⤵
              PID:4736
            • 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=2668 --field-trial-handle=1880,i,12856117168432595091,6033205210492207873,131072 /prefetch:1
              2⤵
                PID:5012
              • 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=2660 --field-trial-handle=1880,i,12856117168432595091,6033205210492207873,131072 /prefetch:1
                2⤵
                  PID:2060
                • 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=4496 --field-trial-handle=1880,i,12856117168432595091,6033205210492207873,131072 /prefetch:1
                  2⤵
                    PID:3372
                  • 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=5080 --field-trial-handle=1880,i,12856117168432595091,6033205210492207873,131072 /prefetch:8
                    2⤵
                      PID:644
                    • 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=3416 --field-trial-handle=1880,i,12856117168432595091,6033205210492207873,131072 /prefetch:8
                      2⤵
                        PID:660
                      • 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=5468 --field-trial-handle=1880,i,12856117168432595091,6033205210492207873,131072 /prefetch:8
                        2⤵
                          PID:4320
                        • 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=1676 --field-trial-handle=1880,i,12856117168432595091,6033205210492207873,131072 /prefetch:2
                          2⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:2556
                      • 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:116
                        • C:\Windows\System32\rundll32.exe
                          C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                          1⤵
                            PID:3824
                          • 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:916
                            • C:\Windows\SysWOW64\cmd.exe
                              cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                              2⤵
                                PID:3660
                              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\urdyrxfk.exe
                                "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\urdyrxfk.exe"
                                2⤵
                                • Executes dropped EXE
                                • Suspicious use of SetWindowsHookEx
                                PID:4544
                            • 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:3360
                              • C:\Windows\SysWOW64\cmd.exe
                                cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                                2⤵
                                  PID:1184
                                • C:\Windows\SysWOW64\taskkill.exe
                                  taskkill /im urdyrxfk.exe /f
                                  2⤵
                                  • Kills process with taskkill
                                  • Suspicious use of AdjustPrivilegeToken
                                  PID:796
                                • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\urdyrxfk.exe
                                  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\urdyrxfk.exe"
                                  2⤵
                                  • Executes dropped EXE
                                  • Suspicious use of SetWindowsHookEx
                                  PID:3312

                              Network

                              MITRE ATT&CK Enterprise v15

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\7411666d-8b73-4e3e-b502-f0c054cf9cff.tmp

                                Filesize

                                6KB

                                MD5

                                8389607123d1edebc2370e184744e2f8

                                SHA1

                                debbebd57f62583df170540718da1c7f46758d9c

                                SHA256

                                326d42246918251cbae93c5801d0978a51322d84e6fd33dc6f535e06fde835b0

                                SHA512

                                a4543ed7cbf532013dcfb983658dad557850fca9411bf999f69262e3bc03eaa8a197800a462d0568cd388ef7511ee6f9b5991d63decb4e15aa03f0be5c96abad

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

                                Filesize

                                1007B

                                MD5

                                a542983db51d3e57b72e655f01d7aa55

                                SHA1

                                192e311052409e7454d998a310c1bfcefe165231

                                SHA256

                                eaa20942ca2112f07b2388a9bb917f81d56e461235d7cb711039fc46e6b8d7b2

                                SHA512

                                29daedf077148587f93fddb1abcfc2d2fe2dc15480c8caff27c293619b4462b73c880539ad9bdd603f0ada7bdb471cf3775dc4d666e695df8f777b4028709368

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

                                Filesize

                                705B

                                MD5

                                3a93160d02837ac300e8803b36448119

                                SHA1

                                314d7bf009324326b6260f8c514e6e16b48cc134

                                SHA256

                                c2b1b7ac24bec938538035e9c878eacf2ce1c57c0bb75894d793190b4bfdf98d

                                SHA512

                                d998dd22083696567bb1b0e3a88012fbe4629d16771d3471db184684173465445f2f4607030840f3b45741e7d2cc51f75b9ac10bd5fef373b2e5e4b977b08eeb

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

                                Filesize

                                87KB

                                MD5

                                e506df3b52eb6d681ab6b782bf4ef171

                                SHA1

                                06585c50a929a0e4cffd5ada6817ef93fbd902f8

                                SHA256

                                b37f76423b208ad02c66129f68f7109e312cc6db837b140625f58548156901a3

                                SHA512

                                e0252a71b8a4eb4d5c277263a658f8fbd664d43390e648e77fed3789b0dcc940a9336cfe049a7150578769645dbeb126bc97a1f70b020fa6c3b935edd9e4bf9c

                              • 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\urdyrxfk.exe

                                Filesize

                                2.3MB

                                MD5

                                9c153ac25f02739019b04b0a8ce82c4b

                                SHA1

                                64136c4238d140a6fb1ec542744ff90aba5bac09

                                SHA256

                                83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                SHA512

                                a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

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

                                Filesize

                                2.3MB

                                MD5

                                9c153ac25f02739019b04b0a8ce82c4b

                                SHA1

                                64136c4238d140a6fb1ec542744ff90aba5bac09

                                SHA256

                                83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                SHA512

                                a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

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

                                Filesize

                                2.3MB

                                MD5

                                9c153ac25f02739019b04b0a8ce82c4b

                                SHA1

                                64136c4238d140a6fb1ec542744ff90aba5bac09

                                SHA256

                                83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                SHA512

                                a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

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

                                Filesize

                                2.3MB

                                MD5

                                9c153ac25f02739019b04b0a8ce82c4b

                                SHA1

                                64136c4238d140a6fb1ec542744ff90aba5bac09

                                SHA256

                                83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                SHA512

                                a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

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

                                Filesize

                                2.1MB

                                MD5

                                d0f2c2de0407cefe7a24c8eb22237a61

                                SHA1

                                a46ba89e46a3d04fd9c919837441625ddaa4febe

                                SHA256

                                23d3f3b9c74b6707db237bdfa797d7425f18938614051ddb633712a42e7f3c96

                                SHA512

                                c59e010a958a1f714bd064592d6b0f26619b2efc879a1b8496d6132a598aa5edddec2e6537c34b1944893926f7664a989bf8df752f8bfffeabae4d3f7fbfb3e3

                              • \??\pipe\crashpad_1444_NRWXYCMXAOAKSCJR

                                MD5

                                d41d8cd98f00b204e9800998ecf8427e

                                SHA1

                                da39a3ee5e6b4b0d3255bfef95601890afd80709

                                SHA256

                                e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                SHA512

                                cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e