Managed XDR

vtdl_4bjqqf0a (Splashtop) — malware analysis report

File info

Filename
vtdl_4bjqqf0a
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 6.2, MSI Installer, Code page: 1252, Create Time/Date: Tue Sep 26 15:17:42 2023, Name of Creating Application: Windows Installer XML Toolset (3.11.2.4516), Title: Installation Database, Subject: AteraAgent, Author: Atera networks, Keywords: Installer, Comments: This installer database contains the logic and data required to install AteraAgent., Template: Intel;1033, Last Saved By: pwner, Revision Number: {D42E1648-2328-41CB-BC72-C0B32D77958E}, Last Saved Time/Date: Tue Mar 5 06:54:27 2024, Number of Pages: 200, Number of Words: 6, Security: 2
File size
2.6 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
24b60847bc0712c9ba0b8036c59ee16c211fa8bb
SHA256
2722e289767ae391e3c3773b8640a8b9f6eb24c6a9d6e541f29c8765f7a8944b
MD5
809334c0b55009c5a50f37e4eec63c43

Malwares

  • Splashtop

Signatures

Execution

T1569.002 persistence_service: Starts newly created service
T1047 antivm_wmi: Uses WMI to detect virtual environment
T1047 has_wmi: Executes one or several WMI requests

Persistence

T1543.003 creates_service: Creates a service, that will start automatically
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Privilege Escalation

T1543.003 creates_service: Creates a service, that will start automatically
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process

Defense Evasion

T1497.001 antivm_generic_services: Enumerates services, possibly for anti-virtualization
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1036.001 invalid_authenticode: Digital signature of the executable file has failed the verification
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1497.001 antivm_network_adapters: Checks NIC addresses
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1070 stealth_window: A process created a hidden window

Discovery

T1497.001 antivm_generic_services: Enumerates services, possibly for anti-virtualization
T1518.001 antiav_detectservice: Attempts to detect installed antiviruses by a certain service
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1082 has_wmi: Executes one or several WMI requests
T1082 uses_windows_utilities: Uses Windows utilities for basic Windows functionality
T1057 has_wmi: Executes one or several WMI requests
T1007 has_wmi: Executes one or several WMI requests
T1497.001 antivm_network_adapters: Checks NIC addresses
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1082 reads_csrss: Attempts to read csrss.exe memory

Command and Control

T1071.001 network_http: Performs HTTP requests
T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp

Impact

T1489 net_stop: Stops services through the use of net stop
T1489 service_control_stop: Stops services via ControlService

Other

AteraAgent: AteraAgent application detected
pe_in_bcryptdecrypt: PE found in BCryptDecrypt function
creates_in_windows: Creates files in the Windows directory
modifies_certs: Attempts to generate or modify system certificates
creates_exe: Creates executable files in the file system
create_process_failed: Could not start the process
suspicious_process_network: Unusual process network activity detected
executes_dropped_exe: Executes dropped exe files
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
break_limit_exceeded: Warning: function calls limit has been exceeded
message_box: Displays a message
get_policy_info: Retrieves information about a Policy object
creates_in_programdata: Creates files in the ProgramData directory
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
writes_data: Writes big amount of data to disk
suricata_alert: Malicious traffic detected
yara_rules: Static rules
ce_info: AteraAgent Configuration Data found

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