Analysis

  • max time kernel
    149s
  • max time network
    146s
  • 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 06:03

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 6 IoCs
  • Executes dropped EXE 3 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 2 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 18 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Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument http://raagamayuribuilders.in/jastef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:872
    • 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,0x100,0x104,0xd8,0x108,0x7ff854119758,0x7ff854119768,0x7ff854119778
      2⤵
        PID:1004
      • 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=2132 --field-trial-handle=1896,i,1026147351413649714,8547459397342868768,131072 /prefetch:8
        2⤵
          PID:4480
        • 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=1656 --field-trial-handle=1896,i,1026147351413649714,8547459397342868768,131072 /prefetch:2
          2⤵
            PID:3052
          • 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=2252 --field-trial-handle=1896,i,1026147351413649714,8547459397342868768,131072 /prefetch:8
            2⤵
              PID:4896
            • 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=2896 --field-trial-handle=1896,i,1026147351413649714,8547459397342868768,131072 /prefetch:1
              2⤵
                PID:4100
              • 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=2864 --field-trial-handle=1896,i,1026147351413649714,8547459397342868768,131072 /prefetch:1
                2⤵
                  PID:4728
                • 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=4580 --field-trial-handle=1896,i,1026147351413649714,8547459397342868768,131072 /prefetch:1
                  2⤵
                    PID:1808
                  • 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=5292 --field-trial-handle=1896,i,1026147351413649714,8547459397342868768,131072 /prefetch:8
                    2⤵
                      PID:2924
                    • 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=2868 --field-trial-handle=1896,i,1026147351413649714,8547459397342868768,131072 /prefetch:8
                      2⤵
                        PID:4136
                      • 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=5204 --field-trial-handle=1896,i,1026147351413649714,8547459397342868768,131072 /prefetch:8
                        2⤵
                          PID:3252
                        • 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=1888 --field-trial-handle=1896,i,1026147351413649714,8547459397342868768,131072 /prefetch:2
                          2⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:5020
                      • 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:1612
                        • C:\Windows\System32\rundll32.exe
                          C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                          1⤵
                            PID:3772
                          • 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:1288
                            • C:\Windows\SysWOW64\cmd.exe
                              cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                              2⤵
                                PID:2220
                              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\doebvyfk.exe
                                "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\doebvyfk.exe"
                                2⤵
                                • Executes dropped EXE
                                • Suspicious use of SetWindowsHookEx
                                PID:3220
                            • 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:3568
                              • C:\Windows\SysWOW64\cmd.exe
                                cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                                2⤵
                                  PID:924
                                • C:\Windows\SysWOW64\taskkill.exe
                                  taskkill /im doebvyfk.exe /f
                                  2⤵
                                  • Kills process with taskkill
                                  • Suspicious use of AdjustPrivilegeToken
                                  PID:4196
                                • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\doebvyfk.exe
                                  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\doebvyfk.exe"
                                  2⤵
                                  • Executes dropped EXE
                                  • Suspicious use of SetWindowsHookEx
                                  PID:368
                              • 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:4816
                                • C:\Windows\SysWOW64\cmd.exe
                                  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                                  2⤵
                                    PID:3624
                                  • C:\Windows\SysWOW64\taskkill.exe
                                    taskkill /im doebvyfk.exe /f
                                    2⤵
                                    • Kills process with taskkill
                                    PID:4716
                                  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\doebvyfk.exe
                                    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\doebvyfk.exe"
                                    2⤵
                                    • Executes dropped EXE
                                    • Suspicious use of SetWindowsHookEx
                                    PID:2732

                                Network

                                MITRE ATT&CK Matrix ATT&CK v13

                                Discovery

                                System Information Discovery

                                2
                                T1082

                                Query Registry

                                1
                                T1012

                                Replay Monitor

                                Loading Replay Monitor...

                                Downloads

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

                                  1009B

                                  MD5

                                  941bd264c7dac946943bdb811593fb6b

                                  SHA1

                                  b3fbb068bd73fd6fee9ffe724270e9eb737f9e88

                                  SHA256

                                  03c5737ec659734b5decae1d863daa1fafb96f0289ad81456cd7eb21436c1797

                                  SHA512

                                  6ad83c0c11b92c94df703d73f0109b3f9ca3bd6b9c1584c1bbb37e40c2334b541ad7fa992a4870dd0f6c58a11f1baaf7513f1be1d077d151c23fb39a94b38071

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

                                  701B

                                  MD5

                                  07331166c591916a28ad34e7f6c7a7e4

                                  SHA1

                                  548acfc8243bdac6434cfb56f6795bc5c86a0965

                                  SHA256

                                  41b2ad4d82fc3939e6aa0bda889bf03217b34229367dbc604acfaf4fee017cc3

                                  SHA512

                                  40939b06960681e71aaaffb4b02ba159ef5d74141844da1f74678441bc1bc73e4bc4ce33dd670e9547e7dd4e025266411b2d2f5672056f240164d95e91c038db

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

                                  6KB

                                  MD5

                                  55202f68b8ee3b82755b1dc79b6376c3

                                  SHA1

                                  db74b9614292112a81a69292f250d25630c231ee

                                  SHA256

                                  b421766edd7e4e8c13a95a7cdeaa435adcb8764d0fb53a73e819d838dc171a87

                                  SHA512

                                  42f8fdd206360638d2d462d3e1bcebfaeb4ba2088ce547cac2e0e1249b4207a59c27878ee55c3f0fddae2fbee22e89bc1758dc4efeb32524d52bee48a17bc01e

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

                                  87KB

                                  MD5

                                  88f19bfd25f279462c2e4729f395bc4c

                                  SHA1

                                  2a8592f9fa2433cb00752116581d87a74c3c2cab

                                  SHA256

                                  b6d0d17f9ffe7c2494e8a158f9b8c06b4a951e1f405b8464c10d5d55d440b9db

                                  SHA512

                                  3e70eb80ea511ee51c956eb353a3a670d3fa3686c307c8fc191f8d5a9c3b9f8fef00b313b5b2bdb63d98c96b1223b2cc7fc8e5c7f2b71acfbcaa05254cc1bdf7

                                • 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\doebvyfk.exe
                                  Filesize

                                  2.3MB

                                  MD5

                                  9c153ac25f02739019b04b0a8ce82c4b

                                  SHA1

                                  64136c4238d140a6fb1ec542744ff90aba5bac09

                                  SHA256

                                  83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                  SHA512

                                  a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

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

                                  2.3MB

                                  MD5

                                  9c153ac25f02739019b04b0a8ce82c4b

                                  SHA1

                                  64136c4238d140a6fb1ec542744ff90aba5bac09

                                  SHA256

                                  83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                  SHA512

                                  a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

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

                                  2.3MB

                                  MD5

                                  9c153ac25f02739019b04b0a8ce82c4b

                                  SHA1

                                  64136c4238d140a6fb1ec542744ff90aba5bac09

                                  SHA256

                                  83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                  SHA512

                                  a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

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

                                  2.3MB

                                  MD5

                                  9c153ac25f02739019b04b0a8ce82c4b

                                  SHA1

                                  64136c4238d140a6fb1ec542744ff90aba5bac09

                                  SHA256

                                  83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                  SHA512

                                  a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

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

                                  2.3MB

                                  MD5

                                  9c153ac25f02739019b04b0a8ce82c4b

                                  SHA1

                                  64136c4238d140a6fb1ec542744ff90aba5bac09

                                  SHA256

                                  83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                  SHA512

                                  a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

                                • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\doebvyfk.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_872_ZEQUIHPOGAOTPUFN
                                  MD5

                                  d41d8cd98f00b204e9800998ecf8427e

                                  SHA1

                                  da39a3ee5e6b4b0d3255bfef95601890afd80709

                                  SHA256

                                  e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                  SHA512

                                  cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e