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Analysis

  • max time kernel
    142s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/02/2025, 22:04

General

  • Target

    quarantine/random_3.exe

  • Size

    6.3MB

  • MD5

    1a533bf2a9707420075ab7386176fc46

  • SHA1

    54df68776bb4295174666cef86ec80d95694b9c5

  • SHA256

    e89155ae9e51d3ed7403f9b4cf95415304b01d14c3805dbaec64a37200b463f1

  • SHA512

    d18ca94d3a260b215bad490863edbb890c104afc111b96cfdd7a43a93b48921aac02fa760577c5dbf4a0d677fda8f51cc8b1cdfe1fb92286c6ec5b116ec52bef

  • SSDEEP

    98304:HJxCVdmLVwA7N/1Kc30bI7w/me7R+aF1ydNvdBKtdh5xNX8mWW1GHUXL:HqVmxIKOAUMaiSTr

Malware Config

Extracted

Family

cryptbot

C2

http://home.fivecc5vs.top/RkxPTSBLYxNxxrPaLizI17

Signatures

  • CryptBot

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

  • Cryptbot family
  • Detects CryptBot payload 1 IoCs

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

  • Enumerates VirtualBox registry keys 2 TTPs 1 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • 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 BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Loads dropped DLL 3 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.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • 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 12 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\quarantine\random_3.exe
    "C:\Users\Admin\AppData\Local\Temp\quarantine\random_3.exe"
    1⤵
    • Enumerates VirtualBox registry keys
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks computer location settings
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2964
    • 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:912
      • 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,0x100,0xd4,0x104,0x7fffb0b7cc40,0x7fffb0b7cc4c,0x7fffb0b7cc58
        3⤵
          PID:3844
        • 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=1920,i,5521430072974181124,7049498463725417440,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=1916 /prefetch:2
          3⤵
            PID:2452
          • 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=2164,i,5521430072974181124,7049498463725417440,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=2200 /prefetch:3
            3⤵
              PID:3716
            • 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=2268,i,5521430072974181124,7049498463725417440,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=2488 /prefetch:8
              3⤵
                PID:4944
              • 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=3192,i,5521430072974181124,7049498463725417440,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=3208 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:1452
              • 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=3228,i,5521430072974181124,7049498463725417440,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=3256 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:1616
              • 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=4236,i,5521430072974181124,7049498463725417440,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=4552 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:1672
              • 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 --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=4764,i,5521430072974181124,7049498463725417440,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=4716 /prefetch:8
                3⤵
                  PID:4624
                • 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 --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=4772,i,5521430072974181124,7049498463725417440,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=4792 /prefetch:8
                  3⤵
                    PID:440
                • 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:3420
                • 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:2628
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 2964 -s 1304
                  2⤵
                  • Program crash
                  PID:4636
              • 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:4868
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2964 -ip 2964
                  1⤵
                    PID:4328
                  • C:\Users\Admin\AppData\Local\Temp\service123.exe
                    C:\Users\Admin\AppData\Local\Temp\/service123.exe
                    1⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    PID:4664
                  • C:\Users\Admin\AppData\Local\Temp\service123.exe
                    C:\Users\Admin\AppData\Local\Temp\/service123.exe
                    1⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    PID:5032

                  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/2964-5-0x0000000000ED0000-0x0000000001B69000-memory.dmp

                    Filesize

                    12.6MB

                  • memory/2964-21-0x0000000000ED0000-0x0000000001B69000-memory.dmp

                    Filesize

                    12.6MB

                  • memory/2964-4-0x0000000000ED0000-0x0000000001B69000-memory.dmp

                    Filesize

                    12.6MB

                  • memory/2964-0-0x0000000000ED0000-0x0000000001B69000-memory.dmp

                    Filesize

                    12.6MB

                  • memory/2964-6-0x0000000000ED0000-0x0000000001B69000-memory.dmp

                    Filesize

                    12.6MB

                  • memory/2964-7-0x0000000000ED0000-0x0000000001B69000-memory.dmp

                    Filesize

                    12.6MB

                  • memory/2964-8-0x0000000000ED0000-0x0000000001B69000-memory.dmp

                    Filesize

                    12.6MB

                  • memory/2964-9-0x0000000000ED0000-0x0000000001B69000-memory.dmp

                    Filesize

                    12.6MB

                  • memory/2964-10-0x0000000000ED0000-0x0000000001B69000-memory.dmp

                    Filesize

                    12.6MB

                  • memory/2964-11-0x0000000000ED0000-0x0000000001B69000-memory.dmp

                    Filesize

                    12.6MB

                  • memory/2964-12-0x0000000069CC0000-0x000000006A71B000-memory.dmp

                    Filesize

                    10.4MB

                  • memory/2964-3-0x0000000000ED0000-0x0000000001B69000-memory.dmp

                    Filesize

                    12.6MB

                  • memory/2964-2-0x0000000000ED1000-0x000000000116D000-memory.dmp

                    Filesize

                    2.6MB

                  • memory/2964-1-0x0000000077D34000-0x0000000077D36000-memory.dmp

                    Filesize

                    8KB

                  • memory/2964-56-0x0000000000ED0000-0x0000000001B69000-memory.dmp

                    Filesize

                    12.6MB

                  • memory/2964-58-0x0000000000ED0000-0x0000000001B69000-memory.dmp

                    Filesize

                    12.6MB

                  • memory/2964-69-0x0000000000ED0000-0x0000000001B69000-memory.dmp

                    Filesize

                    12.6MB

                  • memory/3420-70-0x00000000009C0000-0x00000000009D2000-memory.dmp

                    Filesize

                    72KB

                  • memory/3420-71-0x0000000073AA0000-0x0000000073BD4000-memory.dmp

                    Filesize

                    1.2MB

                  • memory/4664-78-0x00000000009C0000-0x00000000009D2000-memory.dmp

                    Filesize

                    72KB

                  • memory/5032-91-0x00000000009C0000-0x00000000009D2000-memory.dmp

                    Filesize

                    72KB