Analysis

  • max time kernel
    75s
  • max time network
    76s
  • platform
    windows10-1703_x64
  • resource
    win10-20231020-en
  • resource tags

    arch:x64arch:x86image:win10-20231020-enlocale:en-usos:windows10-1703-x64system
  • submitted
    07-11-2023 07:25

General

  • Target

    http://lifeinfotech.in/kkf.htm

Malware Config

Extracted

Family

kutaki

C2

http://linkwotowoto.club/new/two.php

Signatures

  • Kutaki

    Information stealer and keylogger that hides inside legitimate Visual Basic applications.

  • Kutaki Executable 2 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in Windows directory 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 2 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 10 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Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument http://lifeinfotech.in/kkf.htm
    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:4692
    • 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,0xd0,0xd4,0xa8,0xd8,0x7ffde8399758,0x7ffde8399768,0x7ffde8399778
      2⤵
        PID:2316
      • 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=1712 --field-trial-handle=1916,i,2425041584165954896,10888639109769066266,131072 /prefetch:8
        2⤵
          PID:1264
        • 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=1612 --field-trial-handle=1916,i,2425041584165954896,10888639109769066266,131072 /prefetch:2
          2⤵
            PID:1452
          • 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=2084 --field-trial-handle=1916,i,2425041584165954896,10888639109769066266,131072 /prefetch:8
            2⤵
              PID:4256
            • 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=2728 --field-trial-handle=1916,i,2425041584165954896,10888639109769066266,131072 /prefetch:1
              2⤵
                PID:4296
              • 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=2736 --field-trial-handle=1916,i,2425041584165954896,10888639109769066266,131072 /prefetch:1
                2⤵
                  PID:4688
                • 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=3960 --field-trial-handle=1916,i,2425041584165954896,10888639109769066266,131072 /prefetch:1
                  2⤵
                    PID:2712
                  • 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=4236 --field-trial-handle=1916,i,2425041584165954896,10888639109769066266,131072 /prefetch:8
                    2⤵
                      PID:2336
                    • 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=4556 --field-trial-handle=1916,i,2425041584165954896,10888639109769066266,131072 /prefetch:8
                      2⤵
                        PID:5052
                      • 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=4720 --field-trial-handle=1916,i,2425041584165954896,10888639109769066266,131072 /prefetch:8
                        2⤵
                          PID:2108
                      • 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:3988
                        • C:\Windows\System32\rundll32.exe
                          C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                          1⤵
                            PID:1908
                          • C:\Users\Admin\AppData\Local\Temp\Temp1_Payment Channel.zip\Payment Channel.exe
                            "C:\Users\Admin\AppData\Local\Temp\Temp1_Payment Channel.zip\Payment Channel.exe"
                            1⤵
                            • Drops startup file
                            • Suspicious use of SetWindowsHookEx
                            PID:408
                            • C:\Windows\SysWOW64\cmd.exe
                              cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
                              2⤵
                              • Modifies registry class
                              PID:3196
                              • C:\Windows\SysWOW64\mspaint.exe
                                "C:\Windows\system32\mspaint.exe" "C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp"
                                3⤵
                                • Drops file in Windows directory
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of SetWindowsHookEx
                                PID:2768
                            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\osbyfnfk.exe
                              "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\osbyfnfk.exe"
                              2⤵
                              • Executes dropped EXE
                              • Suspicious use of SetWindowsHookEx
                              PID:196
                          • \??\c:\windows\system32\svchost.exe
                            c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s DeviceAssociationService
                            1⤵
                              PID:2160

                            Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

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                            Downloads

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

                              Filesize

                              5KB

                              MD5

                              563041e95ff2835c820fe63c400ca467

                              SHA1

                              56c9c25b573846bb76ba2391e199dafb07d97297

                              SHA256

                              17ed0034f4cb161f8338a12aba8b9ee0b5e0e94fcd34339d771330f0af89d0d1

                              SHA512

                              99767fedf6acb4c20d99a3304e20c547ebd307cca547f6f5f1154b3502f09f0ab98fd1e7ca5df95cb73b59c9c4aec09e6303865efe72d227866f1966b6758da9

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

                              Filesize

                              6KB

                              MD5

                              7bc2f33233bce0f9e5a603c9f5e04173

                              SHA1

                              8b5b14e906897b4db3dfd5a21080989fdca293c0

                              SHA256

                              70c94d4b8ba246e087f7e5ba398b9c1e10ff91dd80edcf9db3e648a1e2eb1d39

                              SHA512

                              014b58871473c5425b25934d3af12cd96cddb4ad717bc778e4fb6723da550e5ec3bb0fc3477578c33e8cb2122721ec970d02b34a71a77aca1f6d92b2d7156b53

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

                              Filesize

                              6KB

                              MD5

                              76fd614c1ffb45a9c56240c2fb406563

                              SHA1

                              1faa874b68de2bf4ad7e18e75e82ab3972cfa860

                              SHA256

                              1a071cdb562b5e9aadab4da6f9c8849b0fecdefaeb6ba668752333ef1bbe17e8

                              SHA512

                              6847ce4c6b071d3f093bdc95f2bc8f6fdc4a31bf73f11c7d1fd34568c43c211ec376bf83c81cb1adba7136fdf194a1356cc9656152919bad9dc4e72e505d9296

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

                              Filesize

                              5KB

                              MD5

                              e903f60f6a64d186a86803a660740fcb

                              SHA1

                              5528bd7b7fc02d39f0f0e58304705b81516b370b

                              SHA256

                              a547748b66f2fa6d1daee1c05bb4f2eb7e17efef4050461d451b1e709ee8589e

                              SHA512

                              275d6025eecc9212fd6c3a252c09e2c92408075ce1aa154d7cc03f3758bcc4085d66637318d1c73d0cc7e2b9bb2a3400141cc0c8e907c00bdd8509eb0599002b

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

                              Filesize

                              106KB

                              MD5

                              d2494e20dd004b27ef4427707e61a501

                              SHA1

                              278c95d79c6637ca40ed103ac7c19cbaf1440b0c

                              SHA256

                              8f3b3de6943930ad3ba0ad02e85ca378528c6e6fa7e2075f2b298c308360fd63

                              SHA512

                              7a3c5be785303e149d545d00ecb311da6248b66973fc8ed04c4f50df7554e5ab988e3a879afabbae771985bcdcd2e072bfd61f862779196e899279841898c3fe

                            • 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\osbyfnfk.exe

                              Filesize

                              501KB

                              MD5

                              646849ab728ff631b3c70480638e6a2a

                              SHA1

                              8f9f70ef43add2a45e0a2430b2d9680616faef8b

                              SHA256

                              b8e4bcb3699104e49979cc86b84ce278bd6b9b392d65d465ac1acd7808ed0db0

                              SHA512

                              32f0a0949c33e0b34239581bbb86d3ee42acdaddc9856c78a55b88924dcade166663e2c8345040dbc2f383b74ebda88e952d9091643d8a7ea8e5d1fd82002de3

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

                              Filesize

                              501KB

                              MD5

                              646849ab728ff631b3c70480638e6a2a

                              SHA1

                              8f9f70ef43add2a45e0a2430b2d9680616faef8b

                              SHA256

                              b8e4bcb3699104e49979cc86b84ce278bd6b9b392d65d465ac1acd7808ed0db0

                              SHA512

                              32f0a0949c33e0b34239581bbb86d3ee42acdaddc9856c78a55b88924dcade166663e2c8345040dbc2f383b74ebda88e952d9091643d8a7ea8e5d1fd82002de3

                            • C:\Users\Admin\Downloads\Payment Channel.zip

                              Filesize

                              336KB

                              MD5

                              800999621ec6036d4ca4070733a1a76a

                              SHA1

                              53ee4f63acd929f3a74f91367535015643f2fab9

                              SHA256

                              4e95c654625af3c239740b6d8f1799d5ad938bcb9404d2935c5240c22985d76b

                              SHA512

                              3e6509d958f07bf925655996674441c33deb9b92c367b9fbd33f8e942a2b674104eacb8f4ce9df5e34c8cafa83e9366d65ef73021a15a4c8f291e6e71f207a58

                            • \??\pipe\crashpad_4692_UAIYDUTHALAJJCTB

                              MD5

                              d41d8cd98f00b204e9800998ecf8427e

                              SHA1

                              da39a3ee5e6b4b0d3255bfef95601890afd80709

                              SHA256

                              e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                              SHA512

                              cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e