Analysis

  • max time kernel
    133s
  • max time network
    135s
  • platform
    windows10-1703_x64
  • resource
    win10-20220901-en
  • resource tags

    arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
  • submitted
    26-01-2023 18:46

General

  • Target

    https://mega.nz/file/enRwWBBJ#MHi98qSdxdmhWhxlAaGz2s3GOZmxHK1Wew4lzdgKU28

Malware Config

Signatures

  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 36 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" https://mega.nz/file/enRwWBBJ#MHi98qSdxdmhWhxlAaGz2s3GOZmxHK1Wew4lzdgKU28
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2760
    • 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=89.0.4389.114 --initial-client-data=0xcc,0xd0,0xd4,0xa8,0xd8,0x7ffc436e4f50,0x7ffc436e4f60,0x7ffc436e4f70
      2⤵
        PID:3328
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=network --mojo-platform-channel-handle=1644 /prefetch:8
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:3448
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1512 /prefetch:2
        2⤵
          PID:3400
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2088 /prefetch:8
          2⤵
            PID:4192
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2872 /prefetch:1
            2⤵
              PID:4944
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2852 /prefetch:1
              2⤵
                PID:4960
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=4072 /prefetch:8
                2⤵
                  PID:4900
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4252 /prefetch:8
                  2⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:2248
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=audio.mojom.AudioService --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=audio --mojo-platform-channel-handle=4704 /prefetch:8
                  2⤵
                    PID:4232
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5172 /prefetch:8
                    2⤵
                      PID:4036
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilReadIcon --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=4464 /prefetch:8
                      2⤵
                        PID:4428
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilReadIcon --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=5208 /prefetch:8
                        2⤵
                          PID:4376
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5540 /prefetch:8
                          2⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:4744
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5504 /prefetch:8
                          2⤵
                            PID:4776
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5388 /prefetch:8
                            2⤵
                              PID:4588
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5160 /prefetch:8
                              2⤵
                                PID:4636
                              • C:\Program Files\Google\Chrome\Application\chrome.exe
                                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --disable-gpu-compositing --lang=en-US --extension-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=17 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5516 /prefetch:1
                                2⤵
                                  PID:4816
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5416 /prefetch:8
                                  2⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:3792
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5680 /prefetch:8
                                  2⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:4784
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5044 /prefetch:8
                                  2⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:1916
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2272 /prefetch:8
                                  2⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:548
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=22 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4048 /prefetch:1
                                  2⤵
                                    PID:1380
                                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5552 /prefetch:8
                                    2⤵
                                    • Suspicious behavior: EnumeratesProcesses
                                    PID:1140
                                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilReadIcon --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=5364 /prefetch:8
                                    2⤵
                                      PID:32
                                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilReadIcon --field-trial-handle=1500,8309140033615129879,5547870571766875416,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=5496 /prefetch:8
                                      2⤵
                                        PID:680
                                    • C:\Windows\system32\AUDIODG.EXE
                                      C:\Windows\system32\AUDIODG.EXE 0x338
                                      1⤵
                                      • Suspicious use of AdjustPrivilegeToken
                                      PID:5096
                                    • C:\Windows\System32\rundll32.exe
                                      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                                      1⤵
                                        PID:944
                                      • C:\Users\Admin\Downloads\MercurialGrabber.exe
                                        "C:\Users\Admin\Downloads\MercurialGrabber.exe"
                                        1⤵
                                        • Executes dropped EXE
                                        • Suspicious use of AdjustPrivilegeToken
                                        PID:2296
                                        • C:\Windows\SYSTEM32\cmd.exe
                                          "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
                                          2⤵
                                            PID:4580
                                            • C:\Windows\system32\chcp.com
                                              chcp 65001
                                              3⤵
                                                PID:3688
                                              • C:\Windows\system32\netsh.exe
                                                netsh wlan show profile
                                                3⤵
                                                  PID:4900
                                                • C:\Windows\system32\findstr.exe
                                                  findstr All
                                                  3⤵
                                                    PID:3520
                                                • C:\Windows\SYSTEM32\cmd.exe
                                                  "cmd.exe" /C chcp 65001 && netsh wlan show profile name=65001 key=clear | findstr Key
                                                  2⤵
                                                    PID:1992
                                                    • C:\Windows\system32\chcp.com
                                                      chcp 65001
                                                      3⤵
                                                        PID:3244
                                                      • C:\Windows\system32\netsh.exe
                                                        netsh wlan show profile name=65001 key=clear
                                                        3⤵
                                                          PID:3276
                                                        • C:\Windows\system32\findstr.exe
                                                          findstr Key
                                                          3⤵
                                                            PID:4728
                                                        • C:\Windows\System32\cmd.exe
                                                          "C:\Windows\System32\cmd.exe" /C ping 1.1.1.1 -n 1 -w 3000 > Nul & Del "C:\Users\Admin\Downloads\MercurialGrabber.exe"
                                                          2⤵
                                                            PID:4540
                                                            • C:\Windows\system32\PING.EXE
                                                              ping 1.1.1.1 -n 1 -w 3000
                                                              3⤵
                                                              • Runs ping.exe
                                                              PID:4692

                                                        Network

                                                        MITRE ATT&CK Matrix ATT&CK v6

                                                        Credential Access

                                                        Credentials in Files

                                                        1
                                                        T1081

                                                        Discovery

                                                        System Information Discovery

                                                        2
                                                        T1082

                                                        Query Registry

                                                        1
                                                        T1012

                                                        Remote System Discovery

                                                        1
                                                        T1018

                                                        Collection

                                                        Data from Local System

                                                        1
                                                        T1005

                                                        Command and Control

                                                        Web Service

                                                        1
                                                        T1102

                                                        Replay Monitor

                                                        Loading Replay Monitor...

                                                        Downloads

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

                                                          116KB

                                                          MD5

                                                          1738288acdbce44e5fa3e2cefc4d3c3f

                                                          SHA1

                                                          52e02275a4c2558ec69dc71e4a0f6b6f63f7a40b

                                                          SHA256

                                                          61e9463bfebc243a199503ea0be38cdaa716222f04e2da430476e4009327b131

                                                          SHA512

                                                          1f6e8ec1c315d7c0999a34be2416c6801b06a81ed95cc997f382dda81f140d2f77f19d3a35a3596107b1397c7765addf8a0134567f9df2bc945da6094d9c0659

                                                        • C:\Users\Admin\Downloads\MercurialGrabber.exe
                                                          Filesize

                                                          1.5MB

                                                          MD5

                                                          d37d9c9be442ccd0c5bfed73ffe498bb

                                                          SHA1

                                                          7eeb76954589ba1e6d06774eaf33c130d8bf9097

                                                          SHA256

                                                          c1c6e41bcd2493bab8c1907b2788b3d70daca87f48ffa29411ffde032330688f

                                                          SHA512

                                                          669ec75cae38cf212d84e654857dc1c89845307ae8ed097a57dc2e83729a37715e696c5f64a8e8f2e2bb6a3a99f0305a44b0f46f580ec966a4dfdf4ca586c7ba

                                                        • C:\Users\Admin\Downloads\MercurialGrabber.exe
                                                          Filesize

                                                          1.5MB

                                                          MD5

                                                          d37d9c9be442ccd0c5bfed73ffe498bb

                                                          SHA1

                                                          7eeb76954589ba1e6d06774eaf33c130d8bf9097

                                                          SHA256

                                                          c1c6e41bcd2493bab8c1907b2788b3d70daca87f48ffa29411ffde032330688f

                                                          SHA512

                                                          669ec75cae38cf212d84e654857dc1c89845307ae8ed097a57dc2e83729a37715e696c5f64a8e8f2e2bb6a3a99f0305a44b0f46f580ec966a4dfdf4ca586c7ba

                                                        • \??\pipe\crashpad_2760_RAQBMHYKINBDFVGW
                                                          MD5

                                                          d41d8cd98f00b204e9800998ecf8427e

                                                          SHA1

                                                          da39a3ee5e6b4b0d3255bfef95601890afd80709

                                                          SHA256

                                                          e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                                          SHA512

                                                          cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                                                        • memory/1992-130-0x0000000000000000-mapping.dmp
                                                        • memory/2296-122-0x0000000000240000-0x00000000003C0000-memory.dmp
                                                          Filesize

                                                          1.5MB

                                                        • memory/2296-123-0x00000000022D0000-0x00000000022DA000-memory.dmp
                                                          Filesize

                                                          40KB

                                                        • memory/2296-124-0x000000001AEA0000-0x000000001AEBA000-memory.dmp
                                                          Filesize

                                                          104KB

                                                        • memory/2296-135-0x000000001D530000-0x000000001D56E000-memory.dmp
                                                          Filesize

                                                          248KB

                                                        • memory/2296-134-0x000000001C190000-0x000000001C1A2000-memory.dmp
                                                          Filesize

                                                          72KB

                                                        • memory/3244-131-0x0000000000000000-mapping.dmp
                                                        • memory/3276-132-0x0000000000000000-mapping.dmp
                                                        • memory/3520-129-0x0000000000000000-mapping.dmp
                                                        • memory/3688-127-0x0000000000000000-mapping.dmp
                                                        • memory/4540-136-0x0000000000000000-mapping.dmp
                                                        • memory/4580-126-0x0000000000000000-mapping.dmp
                                                        • memory/4692-137-0x0000000000000000-mapping.dmp
                                                        • memory/4728-133-0x0000000000000000-mapping.dmp
                                                        • memory/4900-128-0x0000000000000000-mapping.dmp