Analysis

  • max time kernel
    109s
  • max time network
    102s
  • platform
    windows10-1703_x64
  • resource
    win10-20230703-en
  • resource tags

    arch:x64arch:x86image:win10-20230703-enlocale:en-usos:windows10-1703-x64system
  • submitted
    31-08-2023 02:50

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 2 IoCs
  • Executes dropped EXE 1 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
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 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 6 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Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument http://raagamayuribuilders.in/jastef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:3116
    • 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=0xcc,0xd0,0xd4,0xa8,0xd8,0x7ffb53959758,0x7ffb53959768,0x7ffb53959778
      2⤵
        PID:1656
      • 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=1728 --field-trial-handle=1872,i,17334230728286891663,5183844513312268031,131072 /prefetch:8
        2⤵
          PID:2272
        • 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=1592 --field-trial-handle=1872,i,17334230728286891663,5183844513312268031,131072 /prefetch:2
          2⤵
            PID:1516
          • 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=2096 --field-trial-handle=1872,i,17334230728286891663,5183844513312268031,131072 /prefetch:8
            2⤵
              PID:2080
            • 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=2748 --field-trial-handle=1872,i,17334230728286891663,5183844513312268031,131072 /prefetch:1
              2⤵
                PID:4168
              • 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=2624 --field-trial-handle=1872,i,17334230728286891663,5183844513312268031,131072 /prefetch:1
                2⤵
                  PID:4720
                • 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=3852 --field-trial-handle=1872,i,17334230728286891663,5183844513312268031,131072 /prefetch:1
                  2⤵
                    PID:2208
                  • 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=4784 --field-trial-handle=1872,i,17334230728286891663,5183844513312268031,131072 /prefetch:8
                    2⤵
                      PID:32
                    • 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=2736 --field-trial-handle=1872,i,17334230728286891663,5183844513312268031,131072 /prefetch:8
                      2⤵
                        PID:2196
                      • 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=5124 --field-trial-handle=1872,i,17334230728286891663,5183844513312268031,131072 /prefetch:8
                        2⤵
                          PID:1548
                      • 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:2184
                        • C:\Windows\System32\rundll32.exe
                          C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                          1⤵
                            PID:4868
                          • 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:1304
                            • C:\Windows\SysWOW64\cmd.exe
                              cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                              2⤵
                                PID:2800
                              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qtkaaufk.exe
                                "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qtkaaufk.exe"
                                2⤵
                                • Executes dropped EXE
                                • Suspicious use of SetWindowsHookEx
                                PID:2688

                            Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

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                            Downloads

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\5b4c2ca0-fba6-465f-a205-a77fd70c06fa.tmp

                              Filesize

                              87KB

                              MD5

                              fed373008451012bf9d81792a5ae80e4

                              SHA1

                              ca276067581806ef85aa1ba47174014264dbd3be

                              SHA256

                              e30bf0537b396c78969ccef008fb50f596568d84b4c96126c95970a53adf02fa

                              SHA512

                              2c54039f9ecc9780118928e0c2406363bc266669de53f7481e2e0b0e8104f007865585e1901ceac5ee6155eeeb3fab2ac2729b20757751f8c463402ce03d6fdd

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

                              Filesize

                              815B

                              MD5

                              8366fcabbab0d35068c6319206305a2a

                              SHA1

                              6f6365f46f7015aa81f761ba4ead6e31ca743910

                              SHA256

                              0a3b318ecf6f7957e0c00e5ffb5663f09fea4ad885b92bdc594bfe601a4bc815

                              SHA512

                              f4b980c6fda94b52c08145290c0b0503f0a9c645bc79d67c6e4adc3a6b75798813396fc97b4c3bf258dde064ea303a0d7aecbc1befb9a339ad0d296546cfb82b

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

                              Filesize

                              703B

                              MD5

                              77d793d2c93f35caba31a7326e9bd149

                              SHA1

                              8e6c658026f70168c4f569209b8df41629644983

                              SHA256

                              6204f7332ea3fff1da0954c0064210d7c6f97f8334711dc3199adbff0a7435f8

                              SHA512

                              21a516a2b7e473cf0d690178bfb9875f4e9d7d0ef978762a1851262f75c04373468eea324bf65e5b1aabaa89ae18314a9a0d9a3ba0bcce09921236fa4143e0c5

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

                              Filesize

                              6KB

                              MD5

                              7fc4e38ff62d16234d33ed0e952af4df

                              SHA1

                              6b654536f2e8734b1d9d4898e08d4cf777835529

                              SHA256

                              4dbac39e756c1b509d78653ed6dd1405f6525d8ea4fc52a0d0ff8101340c4270

                              SHA512

                              0edc532872f2bd283a32db2de88438941fb49e6411fe6e7080af011d53e868d23762c837c6c0390cf3a60c1586e5e29416ac689f857091051e613797d2c50369

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

                              Filesize

                              6KB

                              MD5

                              8fb90836699b5299c504886be3e59c30

                              SHA1

                              1b1462f14ef39fc4256a0f8b7c0a54ea58a28ce6

                              SHA256

                              4a7c65a9aafc9b3d38620ddbd514ff25d66f2166460d8217012394b975525640

                              SHA512

                              189b014e6ad9f042a00117ec6cca31d8a5c2875a879e9b57899433c60b1f38b07c895e56b53290b431e7326c36ad7082e88774de85240422dc0ceb2dcdb7170b

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

                              Filesize

                              6KB

                              MD5

                              569116c896915225a8bd05e88040fbb7

                              SHA1

                              2d733d36e48ecf4f5dbafff1468468e98e22f9c4

                              SHA256

                              0520507fed2a3028688c3b3f35c853624fc30b1873a2053eef26f3b07649c738

                              SHA512

                              9bd0d1f64cdbb498d88d1146bd4d30526bc33310892bb02d3769f7c23aedb07797e344b7b74becc1895ee4506a1dc1038447a9c78789714067f9d8c9692b9031

                            • 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\qtkaaufk.exe

                              Filesize

                              2.3MB

                              MD5

                              9c153ac25f02739019b04b0a8ce82c4b

                              SHA1

                              64136c4238d140a6fb1ec542744ff90aba5bac09

                              SHA256

                              83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                              SHA512

                              a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

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