Analysis

  • max time kernel
    603s
  • max time network
    496s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-01-2024 22:45

General

  • Target

    http://kothariwheels.com/dnehj

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 4 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 33 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Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument http://kothariwheels.com/dnehj
    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:972
    • 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,0x100,0x104,0xd8,0x108,0x7ff9c6ae9758,0x7ff9c6ae9768,0x7ff9c6ae9778
      2⤵
        PID:4612
      • 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=1744 --field-trial-handle=1876,i,9889840580968116552,8353448856701483880,131072 /prefetch:2
        2⤵
          PID:3752
        • 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=2128 --field-trial-handle=1876,i,9889840580968116552,8353448856701483880,131072 /prefetch:8
          2⤵
            PID:4044
          • 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=2212 --field-trial-handle=1876,i,9889840580968116552,8353448856701483880,131072 /prefetch:8
            2⤵
              PID:2304
            • 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=2956 --field-trial-handle=1876,i,9889840580968116552,8353448856701483880,131072 /prefetch:1
              2⤵
                PID:4928
              • 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=2944 --field-trial-handle=1876,i,9889840580968116552,8353448856701483880,131072 /prefetch:1
                2⤵
                  PID:2104
                • 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=7 --mojo-platform-channel-handle=4496 --field-trial-handle=1876,i,9889840580968116552,8353448856701483880,131072 /prefetch:1
                  2⤵
                    PID:3644
                  • 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=8 --mojo-platform-channel-handle=4868 --field-trial-handle=1876,i,9889840580968116552,8353448856701483880,131072 /prefetch:1
                    2⤵
                      PID:4576
                    • 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=4788 --field-trial-handle=1876,i,9889840580968116552,8353448856701483880,131072 /prefetch:8
                      2⤵
                        PID:4164
                      • 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=4988 --field-trial-handle=1876,i,9889840580968116552,8353448856701483880,131072 /prefetch:8
                        2⤵
                          PID:3144
                        • 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=5636 --field-trial-handle=1876,i,9889840580968116552,8353448856701483880,131072 /prefetch:8
                          2⤵
                            PID:1064
                          • 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=1568 --field-trial-handle=1876,i,9889840580968116552,8353448856701483880,131072 /prefetch:2
                            2⤵
                            • Suspicious behavior: EnumeratesProcesses
                            PID:4452
                        • 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:1716
                          • C:\Windows\System32\rundll32.exe
                            C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                            1⤵
                              PID:2120
                            • C:\Users\Admin\AppData\Local\Temp\Temp1_INV NO 0895.zip\INV NO 0895.bat
                              "C:\Users\Admin\AppData\Local\Temp\Temp1_INV NO 0895.zip\INV NO 0895.bat"
                              1⤵
                              • Drops startup file
                              • Suspicious use of SetWindowsHookEx
                              PID:3540
                              • C:\Windows\SysWOW64\cmd.exe
                                cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                                2⤵
                                  PID:1284
                                • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vgjrqyfk.exe
                                  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vgjrqyfk.exe"
                                  2⤵
                                  • Executes dropped EXE
                                  • Suspicious use of SetWindowsHookEx
                                  PID:1072

                              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

                                1KB

                                MD5

                                2721ea7701841c27f6a89bd8d4753038

                                SHA1

                                7bd577b9bf7b62c86c315d9060ba2371ba2b7c53

                                SHA256

                                86ca52aa8215bbb454fa4c364b18c72129468701eafc2a4dfbb773ec325dabd2

                                SHA512

                                6dda2b558ae986a847c01d73445b3bf2319582b43900b9909471c981002085f4108f72eeeb01211b9babf062183d1cff5192d6f5ca7ab65c6ac88cca806b6b6e

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

                                Filesize

                                703B

                                MD5

                                93321a6da7ed94f29e7ccff166fda076

                                SHA1

                                6f5a17b3afff9d6146eb3e68d8d672f5ef4ecb11

                                SHA256

                                789d053ccec10cb872f8bbd2ce4149b23008449bd83195ce76e27a983060a79d

                                SHA512

                                40778824c099a8c936a870fb75f0990a746e5be37cfaa98c2342d45fa34f9d3f3e5e1a07053be98ee759b4ecd2590772a21e84474129d9db84276c7268470d05

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

                                Filesize

                                6KB

                                MD5

                                c4e2f266ff1ad913853c03d74ffaf4c5

                                SHA1

                                6758c6225151c19529773b8790a4844f61011061

                                SHA256

                                4c0f182e082b05f5988fc3d8af922df4ab2b626a0b3df32420fdf06f2dc61105

                                SHA512

                                409a012e94f70d1764eadd45d9e2fd40334b5b88ade159e9130edae8d3246efe73918d0800a7c0e16014528df292ea304fda6b53b7014ef63f5efc24f19c2ab4

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

                                Filesize

                                6KB

                                MD5

                                a82da096f6485acfa1dd17044977c1b7

                                SHA1

                                5d351fc8c455e3cd6b527a52649fe12c2efce5b3

                                SHA256

                                bfa17e4ffa93667eab417b8d77131f01a9e73ef75701fc39f5e12eee24945cf8

                                SHA512

                                6196d3c3ca1a63a16a5a0f180a1463dc332aff2ad52bc97547211cc415c1eac73697a3e8a0b4bf3dc314b7b0425b4d78c34df917d6c112bc209b7a13639240ae

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

                                Filesize

                                5KB

                                MD5

                                db4d4acb670365c609ac9949888d623d

                                SHA1

                                32420caf0d428d23f351331b7421b3c1901cb835

                                SHA256

                                bc129d24fe5c1d45303577f2fd8637c455f989de9ec4349f836685cf91dcc43e

                                SHA512

                                ba1a601456fef8d38bec021513ece14d70ad9c238fb965c3f8a16a649631595b10d6947f58279718400588f601dd00870ec6da7f4626e1f632984ca65138c674

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

                                Filesize

                                6KB

                                MD5

                                f69adb6063fa16e953f7cff3f566cec0

                                SHA1

                                c0de88d022e8cb65aed528ae1c2b7fe12bd29e5e

                                SHA256

                                a30914cc108e22bb913a33a16f8def923f0b8dd00acc0ad7050235b896a6c30c

                                SHA512

                                37ef488dc9fa0844b405d2b85047acd6550ed3ae17e15536249b3639a465afd45cc417ad0837ecc6293acb53235c8f6926c0f9170d1dce08a1a1536fef9de0e1

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

                                Filesize

                                114KB

                                MD5

                                ad71af34283005649403525d0924189c

                                SHA1

                                69e4d78b49b9f27630ce04626e5766770a0843be

                                SHA256

                                1823c3a73881289a0664fd0e3cfb9e34f18831793aa4d9c37206d225187345dd

                                SHA512

                                406e5c3c709fa83a88091486d871031cf661dcd3b284c4a963f746de10702800240b59db38cf5174489cf066df31e861d3f1c5c52bcbdedfd3ebcdaf34d52e4f

                              • 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\vgjrqyfk.exe

                                Filesize

                                2.4MB

                                MD5

                                bd0317d7d71a80393ad2fd68d6068de1

                                SHA1

                                818c874b396cb525864eb0d89dd4bd48d83c89d4

                                SHA256

                                3bc228f9d963497944b91f760b97b2c1eac7525c4c0c065da8f8e62833fe5485

                                SHA512

                                e130f60ff194a622bced18e59cdaaadc10834833bbd948f8f03e0d13065b74b281f7f803188b4e7dc0077e9dd16684684d838a94e961bede1a220c0211dbdcf1

                              • C:\Users\Admin\Downloads\INV NO 0895.zip.crdownload

                                Filesize

                                2.1MB

                                MD5

                                d9c0bcf7338442ca4bb55412812d9e40

                                SHA1

                                9d6204d46206a40f4f4ac6e78b9056bb80d639c9

                                SHA256

                                23f2743e81089acdc8f418032db74020d5e6be8e19a3b1b849648d1ba9e6325b

                                SHA512

                                6c3bc5742a0679fa4b538ee245bd6a0f39f7e42156cc0bf4e552659e3a633fba36b0ef5276ae61a0848b4d3268598a4266996f370cd96610346059a24f4a658d

                              • \??\pipe\crashpad_972_OSQYSAJBBIQFCBWC

                                MD5

                                d41d8cd98f00b204e9800998ecf8427e

                                SHA1

                                da39a3ee5e6b4b0d3255bfef95601890afd80709

                                SHA256

                                e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                SHA512

                                cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e