Analysis

  • max time kernel
    61s
  • max time network
    55s
  • platform
    windows10-1703_x64
  • resource
    win10-20230915-en
  • resource tags

    arch:x64arch:x86image:win10-20230915-enlocale:en-usos:windows10-1703-x64system
  • submitted
    05-10-2023 02:48

General

  • Target

    http://ugurbilgen.net/dhd

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 36 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Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument http://ugurbilgen.net/dhd
    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:4768
    • 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,0xd0,0xd4,0xa8,0xd8,0x7ffb7e739758,0x7ffb7e739768,0x7ffb7e739778
      2⤵
        PID:1528
      • 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=1784 --field-trial-handle=1824,i,15370783098774079824,2380366612898116475,131072 /prefetch:8
        2⤵
          PID:4424
        • 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=1660 --field-trial-handle=1824,i,15370783098774079824,2380366612898116475,131072 /prefetch:2
          2⤵
            PID:4704
          • 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=2072 --field-trial-handle=1824,i,15370783098774079824,2380366612898116475,131072 /prefetch:8
            2⤵
              PID:4780
            • 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=2612 --field-trial-handle=1824,i,15370783098774079824,2380366612898116475,131072 /prefetch:1
              2⤵
                PID:3376
              • 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=2600 --field-trial-handle=1824,i,15370783098774079824,2380366612898116475,131072 /prefetch:1
                2⤵
                  PID:1092
                • 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=3888 --field-trial-handle=1824,i,15370783098774079824,2380366612898116475,131072 /prefetch:1
                  2⤵
                    PID:1588
                  • 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=5040 --field-trial-handle=1824,i,15370783098774079824,2380366612898116475,131072 /prefetch:8
                    2⤵
                      PID:4500
                    • 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=5508 --field-trial-handle=1824,i,15370783098774079824,2380366612898116475,131072 /prefetch:8
                      2⤵
                        PID:4508
                      • 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=3136 --field-trial-handle=1824,i,15370783098774079824,2380366612898116475,131072 /prefetch:8
                        2⤵
                          PID:1864
                      • 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:3660
                        • C:\Windows\System32\rundll32.exe
                          C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                          1⤵
                            PID:2072
                          • C:\Users\Admin\AppData\Local\Temp\Temp1_Inv No 37482.zip\Inv No 37482.bat
                            "C:\Users\Admin\AppData\Local\Temp\Temp1_Inv No 37482.zip\Inv No 37482.bat"
                            1⤵
                            • Drops startup file
                            • Suspicious use of SetWindowsHookEx
                            PID:5000
                            • C:\Windows\SysWOW64\cmd.exe
                              cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                              2⤵
                                PID:4456
                              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fnquinfk.exe
                                "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fnquinfk.exe"
                                2⤵
                                • Executes dropped EXE
                                • Suspicious use of SetWindowsHookEx
                                PID:5024

                            Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

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

                              Filesize

                              5KB

                              MD5

                              5c4949678a5d913e41a7e1fd4224f8f2

                              SHA1

                              33be573fc36377e3ea1d6417cf09102f1f9974d5

                              SHA256

                              a93cfe3f7bf4e6985d59da7a89d7fa7e57e644baac58683c40a9359c8da58683

                              SHA512

                              31fd5a0c0a9dc981b13b9320452b7ecd3a7342841179da999861be0ae52395507fae96c0b32f98b7e719115aa0693a4e5039a918e96daf4d9653aafd21f46aa4

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

                              Filesize

                              6KB

                              MD5

                              4fa21052364b4b389f9a3e7ef323856f

                              SHA1

                              c6b0631939724fe388ac14d38b95ee33631cd5b7

                              SHA256

                              4fe802fd31c856569a6317f361fa391c3b33d5ad1609aaf7186d48ef6e09ffc8

                              SHA512

                              09ea69bfdc47b1a779ba8ccfd227f4274634f99bfcfb79d73fcc343571043364501c907680a76617e51cdc7b28304c2f7ac20a71d4d19bb80034e5cd2821ff9b

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

                              Filesize

                              101KB

                              MD5

                              585c5e06c9b29580ec366b5e9fdcea67

                              SHA1

                              7b61d825ce78ec1327f8ec33830906880c5ac1c1

                              SHA256

                              adb6e47d5ad24df84ce2fc55d957e3c0fcb75b1022bd5828402a4b21c95d33ea

                              SHA512

                              47ee748f3a650d2e8b2d71784c8e9721609b33ef6e434fe03fa733fd79eff70ff45c98269881ad40d591944a7cfa71bcd150ea922d668cff90e35a62a2ddd3d3

                            • 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\fnquinfk.exe

                              Filesize

                              2.3MB

                              MD5

                              3929ad7a0a9ee4021847fe08fbb8507c

                              SHA1

                              52bb5f35770b7cc307848a8b3f2204a40f54942a

                              SHA256

                              b5aba5698840509b397a05ba9af0d7d102c085d5c066ed3e8c48c81d5b825c81

                              SHA512

                              9ac0dcb5adb3e1d058815b7caddd49e279b3cfce59d3e3b1b82d4049404791c5f6276557ec55b488725414ec6b8931293759e351b96f435ede5193302b637992

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

                              Filesize

                              2.3MB

                              MD5

                              3929ad7a0a9ee4021847fe08fbb8507c

                              SHA1

                              52bb5f35770b7cc307848a8b3f2204a40f54942a

                              SHA256

                              b5aba5698840509b397a05ba9af0d7d102c085d5c066ed3e8c48c81d5b825c81

                              SHA512

                              9ac0dcb5adb3e1d058815b7caddd49e279b3cfce59d3e3b1b82d4049404791c5f6276557ec55b488725414ec6b8931293759e351b96f435ede5193302b637992

                            • \??\pipe\crashpad_4768_XSFMNTBVCJDVNTXL

                              MD5

                              d41d8cd98f00b204e9800998ecf8427e

                              SHA1

                              da39a3ee5e6b4b0d3255bfef95601890afd80709

                              SHA256

                              e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                              SHA512

                              cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e