Analysis

  • max time kernel
    144s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22-11-2024 02:00

General

  • Target

    file.exe

  • Size

    4.2MB

  • MD5

    402af0c244e89244c6e899931f5a23b9

  • SHA1

    4413e4e963830f4631a64830b8dc8bf3e427d53a

  • SHA256

    e4f2dd198edb21635f20639dc65bcae2b2cf6a66b9f8a37b7253dd7b353c3ef9

  • SHA512

    fdcce9f496704336b45ec255095f7dd76fa0af26cf8ab784a283d55d5b05bd94ef3d3e61bee5b9f7e20251dfaaef9834373e6ff39e21fc689551a4ae5a27f1da

  • SSDEEP

    98304:s6seTZzeKqIYD+E2yKPXNe5uqLpGsYEp:s6Z9lqJD+E23P1IpGs3

Malware Config

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.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Uses browser remote debugging 2 TTPs 3 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.

  • Executes dropped EXE 2 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 4 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 2 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3004
    • 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 use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1856
      • 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=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef6e89758,0x7fef6e89768,0x7fef6e89778
        3⤵
          PID:2592
        • C:\Windows\system32\ctfmon.exe
          ctfmon.exe
          3⤵
            PID:2340
          • 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=1104 --field-trial-handle=1412,i,17160853757436404738,1201126946742521675,131072 /prefetch:2
            3⤵
              PID:1928
            • 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=1540 --field-trial-handle=1412,i,17160853757436404738,1201126946742521675,131072 /prefetch:8
              3⤵
                PID:540
              • 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=1628 --field-trial-handle=1412,i,17160853757436404738,1201126946742521675,131072 /prefetch:8
                3⤵
                  PID:1816
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --remote-debugging-port=9222 --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2300 --field-trial-handle=1412,i,17160853757436404738,1201126946742521675,131072 /prefetch:1
                  3⤵
                  • Uses browser remote debugging
                  PID:1096
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --remote-debugging-port=9222 --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2312 --field-trial-handle=1412,i,17160853757436404738,1201126946742521675,131072 /prefetch:1
                  3⤵
                  • Uses browser remote debugging
                  PID:2188
                • 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=2812 --field-trial-handle=1412,i,17160853757436404738,1201126946742521675,131072 /prefetch:2
                  3⤵
                    PID:2300
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=2208 --field-trial-handle=1412,i,17160853757436404738,1201126946742521675,131072 /prefetch:2
                    3⤵
                      PID:1640
                  • C:\Users\Admin\AppData\Local\Temp\service123.exe
                    "C:\Users\Admin\AppData\Local\Temp\service123.exe"
                    2⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    PID:2636
                  • 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:2576
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 3004 -s 960
                    2⤵
                    • Program crash
                    PID:1000
                • 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:1832
                  • C:\Windows\system32\taskeng.exe
                    taskeng.exe {85948064-3D55-4F92-8019-7FE48A5E7EDB} S-1-5-21-1846800975-3917212583-2893086201-1000:ZQABOPWE\Admin:Interactive:[1]
                    1⤵
                      PID:584
                      • C:\Users\Admin\AppData\Local\Temp\service123.exe
                        C:\Users\Admin\AppData\Local\Temp\/service123.exe
                        2⤵
                        • Executes dropped EXE
                        • Loads dropped DLL
                        PID:2504

                    Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1

                      Filesize

                      264KB

                      MD5

                      f50f89a0a91564d0b8a211f8921aa7de

                      SHA1

                      112403a17dd69d5b9018b8cede023cb3b54eab7d

                      SHA256

                      b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                      SHA512

                      bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                    • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\000007.dbtmp

                      Filesize

                      16B

                      MD5

                      18e723571b00fb1694a3bad6c78e4054

                      SHA1

                      afcc0ef32d46fe59e0483f9a3c891d3034d12f32

                      SHA256

                      8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

                      SHA512

                      43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

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

                      Filesize

                      170KB

                      MD5

                      1b76e7cd330787078b313167cb1ca99c

                      SHA1

                      340e87eb9468c64c8cca6594c74b68ff39055667

                      SHA256

                      2b34b528a0b40db3bc85408ebf151a4662dcf05110fff03a29029895d688e857

                      SHA512

                      eae1af43d43e9dd81475f3d0f4e8b2797ea904f5563a21ca308e71757e254c13652fb37a986ffc58570df305a4ddee7420f24a2eaa98202d2144b5daea923b0a

                    • memory/2504-106-0x00000000011B0000-0x00000000011C2000-memory.dmp

                      Filesize

                      72KB

                    • memory/2636-98-0x0000000073E60000-0x0000000073F94000-memory.dmp

                      Filesize

                      1.2MB

                    • memory/2636-97-0x00000000011B0000-0x00000000011C2000-memory.dmp

                      Filesize

                      72KB

                    • memory/3004-12-0x0000000069CC0000-0x000000006A71B000-memory.dmp

                      Filesize

                      10.4MB

                    • memory/3004-66-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-9-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-10-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-11-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-0-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-21-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-7-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-6-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-8-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-5-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-80-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-4-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-82-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-84-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-96-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-3-0x0000000000230000-0x0000000000E70000-memory.dmp

                      Filesize

                      12.2MB

                    • memory/3004-2-0x0000000000231000-0x00000000004A9000-memory.dmp

                      Filesize

                      2.5MB

                    • memory/3004-1-0x00000000777E0000-0x00000000777E2000-memory.dmp

                      Filesize

                      8KB