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Analysis

  • max time kernel
    148s
  • max time network
    94s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250217-en
  • resource tags

    arch:x64arch:x86image:win11-20250217-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    20/02/2025, 14:31

General

  • Target

    open-need-this-684.exe

  • Size

    8.7MB

  • MD5

    26ac2cdeefb0f51dbde730908be45003

  • SHA1

    fd6dbec83d04031efd710c3ce882a2539d100485

  • SHA256

    7f52cc060068f787eb046f732beb652d2727f023b6f17ae1323f8a868c75e1ac

  • SHA512

    2554396d1b4d252240cfda1e3120d4ded181434b7d3171dc693a3cdef2a7cc3800556c608fd455189fa24b61cfd1a58c30ce0f358ba712bc56f10ef13571e907

  • SSDEEP

    49152:cQ5EJW5E9u6LX4RS5ECBnUcvNWuGZdMasijz66IJNJkeBxbEFNWIhNajSQrygYKS:cQ25u6KSSIUcVWLHVs0W7CgYKDyz85QV

Malware Config

Extracted

Family

cryptbot

C2

http://home.thrtnn13sr.top/aAhAvaEByhHTjvHqeqsz17

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
  • Uses browser remote debugging 2 TTPs 4 IoCs

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

  • 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.

  • Drops file in Windows directory 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 10 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\open-need-this-684.exe
    "C:\Users\Admin\AppData\Local\Temp\open-need-this-684.exe"
    1⤵
    • Enumerates VirtualBox registry keys
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1552
    • 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
      • Drops file in Windows directory
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1956
      • 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=0xfc,0x100,0x104,0xd8,0x108,0x7ffc25b4cc40,0x7ffc25b4cc4c,0x7ffc25b4cc58
        3⤵
          PID:2664
        • 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=1828,i,2779768728824139953,1200167679940669452,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=1836 /prefetch:2
          3⤵
            PID:1220
          • 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=2092,i,2779768728824139953,1200167679940669452,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=2108 /prefetch:3
            3⤵
              PID:4788
            • 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=2196,i,2779768728824139953,1200167679940669452,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=2368 /prefetch:8
              3⤵
                PID:3012
              • 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=3128,i,2779768728824139953,1200167679940669452,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=3148 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:4888
              • 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=3292,i,2779768728824139953,1200167679940669452,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=3408 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:5028
              • 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=4160,i,2779768728824139953,1200167679940669452,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=4488 /prefetch:1
                3⤵
                • Uses browser remote debugging
                PID:2296
              • 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=4400,i,2779768728824139953,1200167679940669452,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=4676 /prefetch:8
                3⤵
                  PID:1988
                • 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=4704,i,2779768728824139953,1200167679940669452,262144 --variations-seed-version=20250216-180425.389000 --mojo-platform-channel-handle=4724 /prefetch:8
                  3⤵
                    PID:2200
                • 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:4156
                • 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:2032
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 1552 -s 1128
                  2⤵
                  • Program crash
                  PID:3824
              • 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:1048
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1552 -ip 1552
                  1⤵
                    PID:2632
                  • C:\Users\Admin\AppData\Local\Temp\service123.exe
                    C:\Users\Admin\AppData\Local\Temp\/service123.exe
                    1⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    PID:1568

                  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

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

                    Filesize

                    124KB

                    MD5

                    c02a000cb36143cf01332ae1b09c746b

                    SHA1

                    b43d40d0f07aff234a94066b75f2e3595a537488

                    SHA256

                    43a5b9867eb51b5c27d1f5666e2eab70410b34b23c51247c52c20205d609b392

                    SHA512

                    660342043bb31c3719efe3a9c962669f2df32a8d959ef1ade7a791dbd95ef019283550b67ac110e9682c425a8f4e10852b219c4e723c8ba370b8757c91fd6225

                  • memory/1552-0-0x0000000000760000-0x000000000101F000-memory.dmp

                    Filesize

                    8.7MB

                  • memory/1552-1-0x0000000000760000-0x000000000101F000-memory.dmp

                    Filesize

                    8.7MB

                  • memory/1552-2-0x0000000069CC0000-0x000000006A71B000-memory.dmp

                    Filesize

                    10.4MB

                  • memory/1552-11-0x0000000000760000-0x000000000101F000-memory.dmp

                    Filesize

                    8.7MB

                  • memory/1552-57-0x0000000000760000-0x000000000101F000-memory.dmp

                    Filesize

                    8.7MB

                  • memory/1552-70-0x0000000000760000-0x000000000101F000-memory.dmp

                    Filesize

                    8.7MB

                  • memory/1568-83-0x0000000000C50000-0x0000000000C62000-memory.dmp

                    Filesize

                    72KB

                  • memory/4156-71-0x0000000000C50000-0x0000000000C62000-memory.dmp

                    Filesize

                    72KB

                  • memory/4156-72-0x0000000073740000-0x0000000073874000-memory.dmp

                    Filesize

                    1.2MB