Managed XDR

vtdl_hol9dlsw (Agent Tesla) — malware analysis report

File info

Filename
vtdl_hol9dlsw
File type
Composite Document File V2 Document, Can't read directory
File size
331.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
a2eae9e0aa4c560b003d9d193f67701be83abb25
SHA256
b59936aa777f968b43ad03cca32cbc35ba00d7106c38f2f1821e0bdb238a646c
MD5
329c71620f280e11a60eb21ade2cd8c4

Malwares

  • Agent Tesla

Signatures

Execution

T1059.001 suspicious_powershell: Creates suspicious powershell process
T1059 network_wscript_downloader: Wscript.exe initiated network communication
T1203 exploit_CVE_2017_11882: Exploits CVE-2017-11882 vulnerability
T1059 powershell_cmd_longcommandline: Suspiciously long commandline
T1059 suspicious_process: Spawns a suspicious process
T1059.001 suspicious_process: Spawns a suspicious process
T1047 antivm_wmi: Uses WMI to detect virtual environment
T1047 has_wmi: Executes one or several WMI requests
T1059.005 obfuscated_vbs: Detected obfuscated VBS
T1059.001 url_cmdline: Cmdline of process contains URL
T1059.003 url_cmdline: Cmdline of process contains URL
T1204 office_mshtml_load: Microsoft Office loads MSHTML DLL files (indicator of ActiveX usage)
T1204.002 mimics_extension: Attempts to mimic the file extension
T1064 office_macros: The document contains macro

Privilege Escalation

T1055.002 inject_write_pe: Writes PE file to another process's memory
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

T1218 bypass_dev_utils: Executing .NET utility in a suspended state, potentially for injection
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1027 obfuscated_vbs: Detected obfuscated VBS
T1036 mimics_extension: Attempts to mimic the file extension
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1064 office_macros: The document contains macro

Credential Access

T1552 infostealer_browser: Retrieves personal information from local Internet browsers
T1503 infostealer_browser: Retrieves personal information from local Internet browsers
T1552 infostealer_mail: Collects personal data from local email clients
T1555.003 cookie_files: Accesses cookie files
T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager
T1552 cookie_files: Accesses cookie files

Discovery

T1033 recon_beacon: The process has sent information about the computer over the network
T1057 has_wmi: Executes one or several WMI requests
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1082 has_wmi: Executes one or several WMI requests
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1082 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining

Collection

T1114 infostealer_mail: Collects personal data from local email clients

Command and Control

T1071 network_wscript_downloader: Wscript.exe initiated network communication
T1071.001 recon_beacon: The process has sent information about the computer over the network
T1071.001 network_cnc_http: Suspicious HTTP traffic
T1071.001 network_http: Performs HTTP requests
T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp
T1071.001 wininet_https: Performs HTTP/HTTPS requests using WinInet

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
code_share_services: Connects to text storage services (potentially for malicious payload delivery)
creates_exe: Creates executable files in the file system
modifies_certs: Attempts to generate or modify system certificates
network_suspicious_ftp: Performs suspicious FTP requests
ip_domains: Identifies an IP address using external resources
pdf_page: Contains only one page
suspicious_process_network: Unusual process network activity detected
creates_doc: Creates (office) documents in the file system
process_crashed: One of the processes has failed
unexpected_exception: Unexpected exception
network_ftp: Performs FTP requests
office_summary: The document contains suspicious metadata
create_rpc_bindings: Creates RPC connection
pdf_compressed_stream: Contains an object with compressed stream
creates_suspended_process: Creates suspended process
break_limit_exceeded: Warning: function calls limit has been exceeded
get_policy_info: Retrieves information about a Policy object
creates_in_programdata: Creates files in the ProgramData directory
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
office_links: Office file contains external links
antisandbox_check_graphics_card: Uses CreateDXGIFactory, potentially to detect graphics card
checktokenmembership: Checks user token with CheckTokenMembership call
ce_info: FTP credentials Configuration Data found

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