Analysis

  • max time kernel
    149s
  • max time network
    154s
  • 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 06:44

General

  • Target

    http://raagamayuribuilders.in/kautgk

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 6 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 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Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument http://raagamayuribuilders.in/kautgk
    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:1500
    • 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,0x100,0x104,0xd8,0x108,0x7ffdcf239758,0x7ffdcf239768,0x7ffdcf239778
      2⤵
        PID:3644
      • 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=1928,i,13334915035027607607,12222170397412127454,131072 /prefetch:2
        2⤵
          PID:1532
        • 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=1928,i,13334915035027607607,12222170397412127454,131072 /prefetch:8
          2⤵
            PID:3536
          • 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=2248 --field-trial-handle=1928,i,13334915035027607607,12222170397412127454,131072 /prefetch:8
            2⤵
              PID:4960
            • 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=1928,i,13334915035027607607,12222170397412127454,131072 /prefetch:1
              2⤵
                PID:3360
              • 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=2888 --field-trial-handle=1928,i,13334915035027607607,12222170397412127454,131072 /prefetch:1
                2⤵
                  PID:1080
                • 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=4544 --field-trial-handle=1928,i,13334915035027607607,12222170397412127454,131072 /prefetch:1
                  2⤵
                    PID:4924
                  • 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=5116 --field-trial-handle=1928,i,13334915035027607607,12222170397412127454,131072 /prefetch:8
                    2⤵
                      PID:1696
                    • 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=5440 --field-trial-handle=1928,i,13334915035027607607,12222170397412127454,131072 /prefetch:8
                      2⤵
                        PID:1304
                      • 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=2192 --field-trial-handle=1928,i,13334915035027607607,12222170397412127454,131072 /prefetch:8
                        2⤵
                          PID:5000
                        • 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=5476 --field-trial-handle=1928,i,13334915035027607607,12222170397412127454,131072 /prefetch:8
                          2⤵
                            PID:5000
                          • 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=5468 --field-trial-handle=1928,i,13334915035027607607,12222170397412127454,131072 /prefetch:8
                            2⤵
                              PID:636
                            • 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=4600 --field-trial-handle=1928,i,13334915035027607607,12222170397412127454,131072 /prefetch:2
                              2⤵
                              • Suspicious behavior: EnumeratesProcesses
                              PID:4312
                          • 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:4976
                            • C:\Windows\System32\rundll32.exe
                              C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                              1⤵
                                PID:3324
                              • 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:2872
                                • C:\Windows\SysWOW64\cmd.exe
                                  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                                  2⤵
                                    PID:2304
                                  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\inriuafk.exe
                                    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\inriuafk.exe"
                                    2⤵
                                    • Executes dropped EXE
                                    • Suspicious use of SetWindowsHookEx
                                    PID:2972

                                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

                                  1009B

                                  MD5

                                  6885083051d92e8d6580a5b68d6f7284

                                  SHA1

                                  c8abe2d3f7fd18a4eb8d64acb65d924831c9aaec

                                  SHA256

                                  a46450967c23c2fa32b28d3110d9e08a99bfa23af1005908148a8c835cfaba23

                                  SHA512

                                  9ba317c95bf1ee0bfa5f1dcc67e0729cce0ff4cde0f05193488cd1335f8cb10b669e4881b7cfb84b367604bd8bb328f452d5eb3e3d29fafeb7896f95d4e968a9

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

                                  Filesize

                                  705B

                                  MD5

                                  435ff3d30404aa25658c1ae2ab630576

                                  SHA1

                                  1954bec0ecb60ec83bb38d6efa2dc49836b6121f

                                  SHA256

                                  474ed5a8922429bef3b2b5ba3277d870a19a1c70cb220c6f61ff0f2b7bf62843

                                  SHA512

                                  998cf2fcc5bc47f64a6aec9146e1c4c7d2159c48363fe6ceceb24bc175b070d31ddb6250c61b3e8b2ec8e0fcfd75f4b09198c5b2ca7ded15a18a9d6ad0ba2c52

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

                                  Filesize

                                  6KB

                                  MD5

                                  563d033f2c82bd1749a22a833ebb8af8

                                  SHA1

                                  142cbeb9be22eecf9e1739fe0dca5bead39e68fb

                                  SHA256

                                  835b81d6ffdce6665c830f51b3f2e888b57436bf73e337ee94ed00529783fa14

                                  SHA512

                                  2a60eb93f18f535e774e53a3f88523535c87506ba8639a45af9fb3521cb7baff063c78914c63e9aa133cf4cd5499a82a47551b3deccc8203e672da21520b54c6

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

                                  Filesize

                                  89KB

                                  MD5

                                  2cf3b2d0e0dc46c17f3f61726943b730

                                  SHA1

                                  9998920ae15e012849e08fe87a19894c3de3991a

                                  SHA256

                                  519fd820a58055ef31525d910fd60b01e1a04243a841dfb0cd42bd7d23b61445

                                  SHA512

                                  3a5bb61a67ff8141e6ba10b06ba22de325df13ce007221cd8b6fefd6fbb231f3c962c2b4d90ebae5e756a6d3912bb8eb4e0557eb78dc660d5fad5267aecce1a2

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

                                  Filesize

                                  88KB

                                  MD5

                                  2dae63fa4037660383bdc591043a7697

                                  SHA1

                                  4712abc7bf12037e4c9f454c6a088911adda341f

                                  SHA256

                                  22ecfe910a15d81249fd06d8877eff8bc2b482820e667bfc733af78c7eecb92c

                                  SHA512

                                  c92a5f2b86b89bbe2439320557156399df09b9e72fc7228797820eb85f5e9e718e2b66ca6e3ae391bf979f309649404abfbd174266d427ade964602f680031fa

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

                                  Filesize

                                  114KB

                                  MD5

                                  b511385df30ba0a74f7cbcc251f980ca

                                  SHA1

                                  dde23e2ee2ff810c4f5c9c9df7f830a76bae29d2

                                  SHA256

                                  192b99b6eeee265e84a7b8ed6ce5bac4190db9dc0ae2a8cee3ea096b95ef2c8d

                                  SHA512

                                  a6743d8cc1bd2a84dca49eba03a9b90f8cbe31793b1d68246a76b637271cc0cb3d22594d1a24233ec153e247b7c67bb8a4f0612d580e57755a2a962459f4a563

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

                                  Filesize

                                  88KB

                                  MD5

                                  741e96d5f6577221ccc7142b6d0af5c6

                                  SHA1

                                  f6551b4e3f1b4684c33d74cdb0afbd1d1b0520d1

                                  SHA256

                                  c37d58c39889876d92c88436c257e7592e0d0e6a9dc6d40e74642508a6e67d66

                                  SHA512

                                  73580110fd5f0f4e54356ce959595b900e13f500357e4d153c5d93dbf6c0eb77e68d233f649d7e5238d6cd5fd343899c66ceb88450b814e34f82f808524902c7

                                • 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\inriuafk.exe

                                  Filesize

                                  2.3MB

                                  MD5

                                  9c153ac25f02739019b04b0a8ce82c4b

                                  SHA1

                                  64136c4238d140a6fb1ec542744ff90aba5bac09

                                  SHA256

                                  83269040e4f510f11a327807b23dda45d98386676fc309e27b3eebd9cefa8416

                                  SHA512

                                  a7a9bb1eee5470bb4939d61df33c3840fe69e8503e792d474d7fa273f4c77dd42c84a8e6bdd78b3b157b7aadada401c903e46d3237fa5fcfa6f7b27c477bb4de

                                • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\inriuafk.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_1500_IIZRIZUYDMNITQHO

                                  MD5

                                  d41d8cd98f00b204e9800998ecf8427e

                                  SHA1

                                  da39a3ee5e6b4b0d3255bfef95601890afd80709

                                  SHA256

                                  e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                  SHA512

                                  cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e