Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-12-2024 03:20

General

  • Target

    8b6a0a8d8594fb4f465a8220533a8cbf25fb725220dfc35056c7787b27d89643.exe

  • Size

    12.2MB

  • MD5

    b7f95a6fba7ee898425a69ffd2b6c204

  • SHA1

    d995e2ed97947778c489f6384ba3af0f4343c0bc

  • SHA256

    8b6a0a8d8594fb4f465a8220533a8cbf25fb725220dfc35056c7787b27d89643

  • SHA512

    3b9d35e20161767dabea7bda5ed7db3f63ce738e0934965695dedf1f7487fc092c0e2fe3cf35b9656f521c2ab9e30596cda49d38c7ace360ff2b2b0e52930b59

  • SSDEEP

    196608:1MRd/45eJp2M0lVasW4PEaYjxR3eYr4+hn:tf7CxwAn

Malware Config

Extracted

Family

cryptbot

Signatures

  • CryptBot

    CryptBot is a C++ stealer distributed widely in bundle with other software.

  • Cryptbot family
  • Detects CryptBot payload 6 IoCs

    CryptBot is a C++ stealer distributed widely in bundle with other software.

  • Uses browser remote debugging 2 TTPs 4 IoCs

    Can be used control the browser and steal sensitive information such as credentials and session cookies.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8b6a0a8d8594fb4f465a8220533a8cbf25fb725220dfc35056c7787b27d89643.exe
    "C:\Users\Admin\AppData\Local\Temp\8b6a0a8d8594fb4f465a8220533a8cbf25fb725220dfc35056c7787b27d89643.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:4512
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --remote-debugging-port=9222 --profile-directory="Default"
      2⤵
      • Uses browser remote debugging
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3772
      • 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:4 --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=123.0.6312.123 --initial-client-data=0xf8,0xfc,0x100,0xd4,0x104,0x7ffc36c4cc40,0x7ffc36c4cc4c,0x7ffc36c4cc58
        3⤵
          PID:2312
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAEAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --field-trial-handle=1976,i,5836418148871359311,9251493750665307100,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=1972 /prefetch:2
          3⤵
            PID:2664
          • 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 --no-appcompat-clear --field-trial-handle=1860,i,5836418148871359311,9251493750665307100,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=2020 /prefetch:3
            3⤵
              PID:3416
            • 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=service --no-appcompat-clear --field-trial-handle=2184,i,5836418148871359311,9251493750665307100,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=2492 /prefetch:8
              3⤵
                PID:4860
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --remote-debugging-port=9222 --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3172,i,5836418148871359311,9251493750665307100,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=3188 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:1192
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --remote-debugging-port=9222 --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3196,i,5836418148871359311,9251493750665307100,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=3236 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:4300
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --remote-debugging-port=9222 --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=4272,i,5836418148871359311,9251493750665307100,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=4544 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:2788
            • C:\Users\Admin\AppData\Local\Temp\service123.exe
              "C:\Users\Admin\AppData\Local\Temp\service123.exe"
              2⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • System Location Discovery: System Language Discovery
              PID:1448
            • C:\Windows\SysWOW64\schtasks.exe
              "C:\Windows\System32\schtasks.exe" /create /tn "ServiceData4" /tr "C:\Users\Admin\AppData\Local\Temp\/service123.exe" /st 00:01 /du 9800:59 /sc once /ri 1 /f
              2⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:2412
          • C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe
            "C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe"
            1⤵
              PID:3604
            • C:\Users\Admin\AppData\Local\Temp\service123.exe
              C:\Users\Admin\AppData\Local\Temp\/service123.exe
              1⤵
              • Executes dropped EXE
              • Loads dropped DLL
              PID:1152

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports

              Filesize

              2B

              MD5

              d751713988987e9331980363e24189ce

              SHA1

              97d170e1550eee4afc0af065b78cda302a97674c

              SHA256

              4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

              SHA512

              b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

            • memory/1152-64-0x0000000000A90000-0x0000000000AA2000-memory.dmp

              Filesize

              72KB

            • memory/1448-65-0x0000000000A90000-0x0000000000AA2000-memory.dmp

              Filesize

              72KB

            • memory/1448-66-0x0000000075280000-0x00000000753B4000-memory.dmp

              Filesize

              1.2MB

            • memory/4512-0-0x0000000000A10000-0x000000000164D000-memory.dmp

              Filesize

              12.2MB

            • memory/4512-3-0x0000000000A10000-0x000000000164D000-memory.dmp

              Filesize

              12.2MB

            • memory/4512-15-0x0000000000A10000-0x000000000164D000-memory.dmp

              Filesize

              12.2MB

            • memory/4512-45-0x0000000000A10000-0x000000000164D000-memory.dmp

              Filesize

              12.2MB

            • memory/4512-48-0x0000000000A10000-0x000000000164D000-memory.dmp

              Filesize

              12.2MB

            • memory/4512-60-0x0000000000A10000-0x000000000164D000-memory.dmp

              Filesize

              12.2MB