Analysis

  • max time kernel
    163s
  • max time network
    155s
  • 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 05:27

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 8 IoCs
  • Executes dropped EXE 4 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 3 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 24 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Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument http://raagamayuribuilders.in/jastef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:1608
    • 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,0x100,0x104,0xd8,0x108,0x7ffa4c799758,0x7ffa4c799768,0x7ffa4c799778
      2⤵
        PID:4440
      • 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=2036 --field-trial-handle=1876,i,15162583120644287975,17649792588192879187,131072 /prefetch:8
        2⤵
          PID:5012
        • 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=1784 --field-trial-handle=1876,i,15162583120644287975,17649792588192879187,131072 /prefetch:2
          2⤵
            PID:1348
          • 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=1876,i,15162583120644287975,17649792588192879187,131072 /prefetch:8
            2⤵
              PID:3460
            • 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=2852 --field-trial-handle=1876,i,15162583120644287975,17649792588192879187,131072 /prefetch:1
              2⤵
                PID:1320
              • 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=2884 --field-trial-handle=1876,i,15162583120644287975,17649792588192879187,131072 /prefetch:1
                2⤵
                  PID:1732
                • 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=4596 --field-trial-handle=1876,i,15162583120644287975,17649792588192879187,131072 /prefetch:1
                  2⤵
                    PID:1196
                  • 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=3952 --field-trial-handle=1876,i,15162583120644287975,17649792588192879187,131072 /prefetch:8
                    2⤵
                      PID:3832
                    • 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=5400 --field-trial-handle=1876,i,15162583120644287975,17649792588192879187,131072 /prefetch:8
                      2⤵
                        PID:2000
                      • 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=4924 --field-trial-handle=1876,i,15162583120644287975,17649792588192879187,131072 /prefetch:8
                        2⤵
                          PID:3332
                        • 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=1644 --field-trial-handle=1876,i,15162583120644287975,17649792588192879187,131072 /prefetch:2
                          2⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:3000
                      • 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:4728
                        • C:\Windows\System32\rundll32.exe
                          C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                          1⤵
                            PID:1660
                          • 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:2288
                            • C:\Windows\SysWOW64\cmd.exe
                              cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                              2⤵
                                PID:2716
                              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gdnppvfk.exe
                                "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gdnppvfk.exe"
                                2⤵
                                • Executes dropped EXE
                                • Suspicious use of SetWindowsHookEx
                                PID:432
                            • 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:5032
                              • C:\Windows\SysWOW64\cmd.exe
                                cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                                2⤵
                                  PID:4648
                                • C:\Windows\SysWOW64\taskkill.exe
                                  taskkill /im gdnppvfk.exe /f
                                  2⤵
                                  • Kills process with taskkill
                                  PID:2060
                                • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gdnppvfk.exe
                                  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gdnppvfk.exe"
                                  2⤵
                                  • Executes dropped EXE
                                  • Suspicious use of SetWindowsHookEx
                                  PID:3192
                              • 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:1484
                                • C:\Windows\SysWOW64\cmd.exe
                                  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                                  2⤵
                                    PID:4656
                                  • C:\Windows\SysWOW64\taskkill.exe
                                    taskkill /im gdnppvfk.exe /f
                                    2⤵
                                    • Kills process with taskkill
                                    PID:1468
                                  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gdnppvfk.exe
                                    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gdnppvfk.exe"
                                    2⤵
                                    • Executes dropped EXE
                                    • Suspicious use of SetWindowsHookEx
                                    PID:1660
                                • 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:3284
                                  • C:\Windows\SysWOW64\cmd.exe
                                    cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                                    2⤵
                                      PID:4872
                                    • C:\Windows\SysWOW64\taskkill.exe
                                      taskkill /im gdnppvfk.exe /f
                                      2⤵
                                      • Kills process with taskkill
                                      PID:2324
                                    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gdnppvfk.exe
                                      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gdnppvfk.exe"
                                      2⤵
                                      • Executes dropped EXE
                                      • Suspicious use of SetWindowsHookEx
                                      PID:2356

                                  Network

                                  MITRE ATT&CK Enterprise v15

                                  Replay Monitor

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                                  Downloads

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

                                    1008B

                                    MD5

                                    e89eabb650c3b1fda2b0f4183aebc8a6

                                    SHA1

                                    82ed6f8b885f396f86f3a70ed26984fcc8d77078

                                    SHA256

                                    a7ab2be62f74b7ff0be30cf332f292419ee5982d0fca2fe1306da406e472027e

                                    SHA512

                                    fd44b933e82dbee07534ebf9f098662bbbb3f7e406ae2d6e2fd89693c713d2e1421b4bdc97d88592883c12949f27b3cff228833bceb8fe56ac5b17afc5da2dbb

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

                                    705B

                                    MD5

                                    04fd23720f6d8b741dc52ec3aa481cb7

                                    SHA1

                                    eacac7b0d262b469531480515bd95984d556652c

                                    SHA256

                                    074dfd273aec047ef68eae14376fe3ff225d0da100fd60894f004c107a6c88a3

                                    SHA512

                                    aa34cc4ccf28f5496e710c0d93fa70993a82da50579e70cd0d80ef86331bef60cc9bc5fc5a382bcfad491093881a64fb80ae3853c28f3f1b6fc2cce5da21ad0c

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

                                    6KB

                                    MD5

                                    1e9a1dd7cd96f3c17a437973f77ebb7b

                                    SHA1

                                    52def273c8ba8c8f834b1e804f2825b13d087ad2

                                    SHA256

                                    0896375075e8ac4f77754342ef7ddc8a2870fce4fd2544d9b7aa48ea692ba561

                                    SHA512

                                    201eb953226f1673dc3c95a46644453e45f2827b71ce1763745207db4f0ec7a88bd55a2ed3b4366dfa18a63ab22e314d5329e623eb5167db773cdcfffbea775d

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

                                    87KB

                                    MD5

                                    4c74e80f3681886b88f935219487b7cb

                                    SHA1

                                    64ef263cebf007cac9feda3b52cd42f1ba79a56d

                                    SHA256

                                    81b52bda241cbf7543d0cd987dd88c4a963afa3bc71b0afd01517ec7a1dd3df1

                                    SHA512

                                    1ac0b841edcb301f586556c63c50307f8ac425051fb325ecd696d774363a193543eadaa0c428af07ae06458e661393cfbcb0110de1045c32b63e0baa08974bd8

                                  • 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\gdnppvfk.exe
                                    Filesize

                                    2.3MB

                                    MD5

                                    9c153ac25f02739019b04b0a8ce82c4b

                                    SHA1

                                    64136c4238d140a6fb1ec542744ff90aba5bac09

                                    SHA256

                                    83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                    SHA512

                                    a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

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

                                    2.3MB

                                    MD5

                                    9c153ac25f02739019b04b0a8ce82c4b

                                    SHA1

                                    64136c4238d140a6fb1ec542744ff90aba5bac09

                                    SHA256

                                    83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                    SHA512

                                    a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

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

                                    2.3MB

                                    MD5

                                    9c153ac25f02739019b04b0a8ce82c4b

                                    SHA1

                                    64136c4238d140a6fb1ec542744ff90aba5bac09

                                    SHA256

                                    83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                    SHA512

                                    a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

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

                                    2.3MB

                                    MD5

                                    9c153ac25f02739019b04b0a8ce82c4b

                                    SHA1

                                    64136c4238d140a6fb1ec542744ff90aba5bac09

                                    SHA256

                                    83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                    SHA512

                                    a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

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

                                    2.3MB

                                    MD5

                                    9c153ac25f02739019b04b0a8ce82c4b

                                    SHA1

                                    64136c4238d140a6fb1ec542744ff90aba5bac09

                                    SHA256

                                    83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                    SHA512

                                    a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

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

                                    2.3MB

                                    MD5

                                    9c153ac25f02739019b04b0a8ce82c4b

                                    SHA1

                                    64136c4238d140a6fb1ec542744ff90aba5bac09

                                    SHA256

                                    83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                    SHA512

                                    a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

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

                                    2.3MB

                                    MD5

                                    9c153ac25f02739019b04b0a8ce82c4b

                                    SHA1

                                    64136c4238d140a6fb1ec542744ff90aba5bac09

                                    SHA256

                                    83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                    SHA512

                                    a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

                                  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gdnppvfk.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_1608_VRIVUFHFWKGSQFDJ
                                    MD5

                                    d41d8cd98f00b204e9800998ecf8427e

                                    SHA1

                                    da39a3ee5e6b4b0d3255bfef95601890afd80709

                                    SHA256

                                    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                    SHA512

                                    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e