Resubmissions

23-11-2023 02:57

231123-dfxvbaff29 10

23-11-2023 02:50

231123-dbwrfsgd2w 1

Analysis

  • max time kernel
    124s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231023-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2023 02:57

General

  • Target

    http://burnwomanburn.com/wp-content/uploads/2023/set.html

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 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Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument http://burnwomanburn.com/wp-content/uploads/2023/set.html
    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:2592
    • 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,0x100,0x104,0xd8,0x108,0x7ffb86069758,0x7ffb86069768,0x7ffb86069778
      2⤵
        PID:1184
      • 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=1708 --field-trial-handle=1868,i,9711287868433455662,854566212103849703,131072 /prefetch:2
        2⤵
          PID:1740
        • 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=2020 --field-trial-handle=1868,i,9711287868433455662,854566212103849703,131072 /prefetch:8
          2⤵
            PID:4568
          • 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=2208 --field-trial-handle=1868,i,9711287868433455662,854566212103849703,131072 /prefetch:8
            2⤵
              PID:4904
            • 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=2968 --field-trial-handle=1868,i,9711287868433455662,854566212103849703,131072 /prefetch:1
              2⤵
                PID:3788
              • 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=2960 --field-trial-handle=1868,i,9711287868433455662,854566212103849703,131072 /prefetch:1
                2⤵
                  PID:4192
                • 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=4732 --field-trial-handle=1868,i,9711287868433455662,854566212103849703,131072 /prefetch:1
                  2⤵
                    PID:5032
                  • 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=8 --mojo-platform-channel-handle=4924 --field-trial-handle=1868,i,9711287868433455662,854566212103849703,131072 /prefetch:1
                    2⤵
                      PID:3540
                    • 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=5276 --field-trial-handle=1868,i,9711287868433455662,854566212103849703,131072 /prefetch:8
                      2⤵
                        PID:2976
                      • 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=4852 --field-trial-handle=1868,i,9711287868433455662,854566212103849703,131072 /prefetch:8
                        2⤵
                          PID:1524
                        • 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=5624 --field-trial-handle=1868,i,9711287868433455662,854566212103849703,131072 /prefetch:8
                          2⤵
                            PID:1784
                          • 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=3900 --field-trial-handle=1868,i,9711287868433455662,854566212103849703,131072 /prefetch:8
                            2⤵
                              PID:3888
                            • 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=2476 --field-trial-handle=1868,i,9711287868433455662,854566212103849703,131072 /prefetch:2
                              2⤵
                              • Suspicious behavior: EnumeratesProcesses
                              PID:1988
                          • 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:3436
                            • C:\Windows\System32\rundll32.exe
                              C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                              1⤵
                                PID:3564
                              • C:\Users\Admin\AppData\Local\Temp\Temp1_INF_NEFT_Invoice.zip\INF_NEFT_Invoice.bat
                                "C:\Users\Admin\AppData\Local\Temp\Temp1_INF_NEFT_Invoice.zip\INF_NEFT_Invoice.bat"
                                1⤵
                                • Drops startup file
                                • Suspicious use of SetWindowsHookEx
                                PID:4792
                                • C:\Windows\SysWOW64\cmd.exe
                                  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                                  2⤵
                                    PID:2216
                                  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gpuxxvfk.exe
                                    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gpuxxvfk.exe"
                                    2⤵
                                    • Executes dropped EXE
                                    • Suspicious use of SetWindowsHookEx
                                    PID:3408

                                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

                                  1KB

                                  MD5

                                  16532e99e6b888fd94b469660375b2c4

                                  SHA1

                                  ebad5323e76714319dfacfa1d5e8af5091ad782e

                                  SHA256

                                  38444f55f7857578843baf09d92b740c52c6980db7280f587c8395c49a89bbd6

                                  SHA512

                                  c6c7964a079d92ed8ea4ba0393728d2fcab36ff2e0867b9c78ce216552d92a8d15b1cb519ef188e3d2c9dcc627ef85dbe7d918296221785b29f82f548665006e

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

                                  705B

                                  MD5

                                  43c243c5361d99dcc4b263d938ffc5a8

                                  SHA1

                                  ba89efb6685afdf54149cfb579bd2f8f907838ad

                                  SHA256

                                  be443eab1b7589e941f07e734b71b0a2bf712c0f1df502043d542444aabba457

                                  SHA512

                                  03ce281cf19e6d2da60d3cbc74a8e2091bcca3de1c06eeab2996f9573d2012964982604b7bb4684f67a27ab1b784f0cbe8fa7168f6fa837bcc94c4c0360d1b2f

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

                                  6KB

                                  MD5

                                  c14ccae36deb2c9eda7f400a8ee0e56d

                                  SHA1

                                  4106aba794167604223e0cde3b68178158036799

                                  SHA256

                                  876053a7abeb7dd138224645cbcddd78091b213940c83aa116064b37c76a2b8a

                                  SHA512

                                  0a5a1091ad7c5155c0ee81862c556e8884856c0cc95a5d0b3213ce8f616929a881a806b843b1c15e67c6191ece7d17c00eeb242817c7ca4145d5f08357f2f697

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

                                  214KB

                                  MD5

                                  e7063403ac49a813f4b55874e2f8f9b0

                                  SHA1

                                  e9e681e436223e0ee296d55b31fa3c6965a3a535

                                  SHA256

                                  00da7ae0cae585741f2680d15d02a367697a94030f8388f19d086bb8ad4b01c3

                                  SHA512

                                  72d9d0a743ea947a7d9e079c24f69d4a30a9c0413ca7f980726a4a033db208a086ebd4e2a102235bdfc5956e02032dd707afa6997c2f7251fca9c3747733bc65

                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Module Info Cache
                                  Filesize

                                  110KB

                                  MD5

                                  28d117e21376bb7a198e5e025bf5b47c

                                  SHA1

                                  0c6940611189de84503a357e4d9d9f0caf6c0eab

                                  SHA256

                                  d7187042ca3f02dbba908b997fb438544376976c6f7d675899721b6defaf7d3e

                                  SHA512

                                  06771083ecb496487295092667e9a2fc9b51f325eb48c33250187abfdb69d5ca67e89347303d83670f831cc4a1ce836a6a6ebc508c4d29bddd6e555ae95a30da

                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Module Info Cache~RFe582844.TMP
                                  Filesize

                                  107KB

                                  MD5

                                  9417bfea62df7a2be0c6195b9f035f27

                                  SHA1

                                  a8a89f4acbefd690ac52e9c4abbe747a9b1f740e

                                  SHA256

                                  9a616264859c4406862f0646d4c189a0f815976a2e607f093471227e8f7ac720

                                  SHA512

                                  beec558df250c40e95f0a4f1b8410b57e36c64ce07072aed04041319c4639dba97ffcfdff8b5436c87f305b6f57115fcc3c459e5f3cbfa8ee458a736643a590c

                                • 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\gpuxxvfk.exe
                                  Filesize

                                  2.4MB

                                  MD5

                                  a8402d87fdacd184ee281ada81f3aeec

                                  SHA1

                                  0a2b2d7f46cf6b6c8649d4d1c48c313c2cd629b7

                                  SHA256

                                  e853852e378eb31800ac04c7e2e81649fb0b36040e8fb95f9f50c21c2e603b92

                                  SHA512

                                  aec2f4451898b83582dea4726b384722fffdf22579afeea8046b33316aeb1a8f2a0ecfc3bbfba310778c848729280e936c0e08bc87d0e909e39af7e0b662a5a2

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

                                  2.4MB

                                  MD5

                                  a8402d87fdacd184ee281ada81f3aeec

                                  SHA1

                                  0a2b2d7f46cf6b6c8649d4d1c48c313c2cd629b7

                                  SHA256

                                  e853852e378eb31800ac04c7e2e81649fb0b36040e8fb95f9f50c21c2e603b92

                                  SHA512

                                  aec2f4451898b83582dea4726b384722fffdf22579afeea8046b33316aeb1a8f2a0ecfc3bbfba310778c848729280e936c0e08bc87d0e909e39af7e0b662a5a2

                                • C:\Users\Admin\Downloads\INF_NEFT_Invoice.zip
                                  Filesize

                                  2.1MB

                                  MD5

                                  f3df5cfeb9072a1100d840b7c9f9d79f

                                  SHA1

                                  80fb8522506d3ff89b33f0917549af2befc99050

                                  SHA256

                                  181bba3337297ea023f1318f62bef7d53225ed92854b024399df71857382f49e

                                  SHA512

                                  e1ec232e348a911abb5966728566d581cc0e714c8bd1099ff5ca8179ef54d6a41dca820aa80d219fbbe3775ca5af7d3d3a3b91be495183fbd360363f368a89f3

                                • \??\pipe\crashpad_2592_HRORNVPZMNMBSUHK
                                  MD5

                                  d41d8cd98f00b204e9800998ecf8427e

                                  SHA1

                                  da39a3ee5e6b4b0d3255bfef95601890afd80709

                                  SHA256

                                  e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                  SHA512

                                  cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e