Analysis

  • max time kernel
    600s
  • max time network
    485s
  • platform
    windows11-21h2_x64
  • resource
    win11-20231222-en
  • resource tags

    arch:x64arch:x86image:win11-20231222-enlocale:en-usos:windows11-21h2-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 12 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Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument http://kothariwheels.com/dnehj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: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=0x100,0x104,0x108,0xdc,0x10c,0x7ffa6be59758,0x7ffa6be59768,0x7ffa6be59778
      2⤵
        PID:3660
      • 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=316 --field-trial-handle=1832,i,13125482211681877450,7797496550212105903,131072 /prefetch:2
        2⤵
          PID:4832
        • 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=2184 --field-trial-handle=1832,i,13125482211681877450,7797496550212105903,131072 /prefetch:8
          2⤵
            PID:2852
          • 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=2112 --field-trial-handle=1832,i,13125482211681877450,7797496550212105903,131072 /prefetch:8
            2⤵
              PID:4280
            • 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=2948 --field-trial-handle=1832,i,13125482211681877450,7797496550212105903,131072 /prefetch:1
              2⤵
                PID:3936
              • 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=2932 --field-trial-handle=1832,i,13125482211681877450,7797496550212105903,131072 /prefetch:1
                2⤵
                  PID:1472
                • 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=4536 --field-trial-handle=1832,i,13125482211681877450,7797496550212105903,131072 /prefetch:1
                  2⤵
                    PID:232
                  • 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=4540 --field-trial-handle=1832,i,13125482211681877450,7797496550212105903,131072 /prefetch:1
                    2⤵
                      PID:3104
                    • 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=5136 --field-trial-handle=1832,i,13125482211681877450,7797496550212105903,131072 /prefetch:8
                      2⤵
                        PID:4448
                      • 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=5020 --field-trial-handle=1832,i,13125482211681877450,7797496550212105903,131072 /prefetch:8
                        2⤵
                          PID:2944
                        • 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=3876 --field-trial-handle=1832,i,13125482211681877450,7797496550212105903,131072 /prefetch:8
                          2⤵
                            PID:2736
                          • 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=1624 --field-trial-handle=1832,i,13125482211681877450,7797496550212105903,131072 /prefetch:8
                            2⤵
                              PID:4880
                            • 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=10.0.22000.1 --gpu-preferences=UAAAAAAAAADoAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAACQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=3424 --field-trial-handle=1832,i,13125482211681877450,7797496550212105903,131072 /prefetch:2
                              2⤵
                              • Suspicious behavior: EnumeratesProcesses
                              PID:3332
                          • 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:3620
                            • C:\Windows\System32\rundll32.exe
                              C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                              1⤵
                                PID:4992
                              • 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:4944
                                • C:\Windows\SysWOW64\cmd.exe
                                  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                                  2⤵
                                    PID:3060
                                  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jbvdkifk.exe
                                    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jbvdkifk.exe"
                                    2⤵
                                    • Executes dropped EXE
                                    • Suspicious use of SetWindowsHookEx
                                    PID:4108

                                Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

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                                Downloads

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

                                  Filesize

                                  1KB

                                  MD5

                                  51b3b23d37a63ab65a58c25a6db3d2cc

                                  SHA1

                                  67adde429ae44aba5c178327e4cb93aeecbe4522

                                  SHA256

                                  f705a841553aae1665df4edfd13684eafbb0121d890561b65e3cffe596e809de

                                  SHA512

                                  e75223767fceecd26cfb47616c1968996ce7f721d1344d6213bd5f38e2ad605d632d054556ec7dccc7a237227898aeeea32dc528efec24ab1fa0b230997afc30

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

                                  Filesize

                                  705B

                                  MD5

                                  4dacf21dde887421afc1d45dc5724661

                                  SHA1

                                  8fa36472d657f3d8db477709df4e7aac1f83b055

                                  SHA256

                                  fa67441ac1ad1c6e9473757c5cc4563f05497b5c0d62f46e9a4ab7518f9294e8

                                  SHA512

                                  048ede3dc3a721e1b3d883cc7f060469e2e0255007f308712b15b28d2e50b1aad7bc7e8ca7126f1ac04bc3a27aead51bb2dcfbac08bddaeb9e4c851a02f1794e

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

                                  Filesize

                                  6KB

                                  MD5

                                  c2ac0b513e6f955b056ef62d114d3a10

                                  SHA1

                                  b1ce251f8c2ea19353682cec140503cef215cfcd

                                  SHA256

                                  eb4fdc1dc70b828fdec69bf285c8a8732e486f48b3f87fca01f3824dae3a7f6f

                                  SHA512

                                  f8a085766d3f2fe33b25412262daad051723e350401144c67698c3dcef62972d67043c8c900e58266dd96ec273767e484f0b76ab5f4861f8c192aa4165bbecab

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

                                  Filesize

                                  114KB

                                  MD5

                                  eaeb63314fbc3207eede3f5b531c6c97

                                  SHA1

                                  86d0213f864bb0ea497bac4ec63b4bed219c095a

                                  SHA256

                                  5900d0df8bd9be7ecd5bd768094e21a83400f41d7d5d305590d04b02080e5ddc

                                  SHA512

                                  8047f39b9605e2968cef13a95e15fa6eb9b8cfb72809809f66ba90f2c6ec78c407f74a84b6167f0a007dff061cc66ad89ff4022c6a7a94eb9841af610004e4ea

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

                                  Filesize

                                  102KB

                                  MD5

                                  b5eff02671517cf45dfe4986f0175b8e

                                  SHA1

                                  9fe46c6bc4edafeb0a7f622e0fee158147f609f7

                                  SHA256

                                  2bc9288a06f4d1a87ed446fd544b2a2224720bcab1dc496682be9ca6d4b1b5a6

                                  SHA512

                                  1a9afd8d4a1f812982e1f6c5f5c4e73846661a4a3e290501d0179da48b8f27f83f46279acba853573bf68195d406e9dc88463523da3afe61aff30377c51c240e

                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Module Info Cache~RFe58397a.TMP

                                  Filesize

                                  98KB

                                  MD5

                                  cc4b7479a45f0bcb73f5472dce10730f

                                  SHA1

                                  92bfeca9e5f0945610e62e0595c406215ad1a4d1

                                  SHA256

                                  e54b23e2c16215e1b8d7aa725f9ceec483e69954902ec52e236ea9720d37784b

                                  SHA512

                                  b7f3137102f71cd2b108582923b80de891b857ccdf8ce679bbc2dbfcfa7bacdaa67084170c3e9654cf4b558f93166d4d7d3d4639ab832c476c5b4f911b57ffe9

                                • 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\jbvdkifk.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_2592_XXPXPTVDVBDJYTTM

                                  MD5

                                  d41d8cd98f00b204e9800998ecf8427e

                                  SHA1

                                  da39a3ee5e6b4b0d3255bfef95601890afd80709

                                  SHA256

                                  e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                  SHA512

                                  cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e