Managed XDR

vtdl_ec7n12d1 (Agent Tesla) — malware analysis report

File info

Filename
vtdl_ec7n12d1
File type
RFC 822 mail, UTF-8 Unicode text, with CRLF line terminators
File size
135.2 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
aa7a1be67c11a59ed3ebc4f3de843cf05b43a1d1
SHA256
ad9818fb939a9e66d1928c60eedd66595c78c3576ae9be63422fe772cf627753
MD5
bc84a0292c282396265c741ce81938ff

Malwares

  • Agent Tesla

Signatures

Initial Access

T1192 html_urls: HTML-document downloads a file

Execution

T1204.002 mimics_extension: Attempts to mimic the file extension
T1047 antivm_wmi: Uses WMI to detect virtual environment
T1047 has_wmi: Executes one or several WMI requests

Privilege Escalation

T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1055 injection_runpe_2: Executes injected code in another 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

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
T1055.012 injection_runpe: Injects code into another process
T1112 creates_largekey: Saves very large data in the registry, can be used to save the configuration or body of the malware
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1036 mimics_extension: Attempts to mimic the file extension
T1055 injection_runpe_2: Executes injected code in another process
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1497.001 antivm_network_adapters: Checks NIC addresses
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1497.001 antivm_queries_computername: Retrieves the computer name
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

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
T1552 infostealer_ftp: Collects data from local FTP clients
T1552.001 infostealer_winscp: Collects information from configuration file of WinSCP
T1552.001 infostealer_vpn: Collects information about installed VPN software
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
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1057 has_wmi: Executes one or several WMI requests
T1082 has_wmi: Executes one or several WMI requests
T1497.001 antivm_network_adapters: Checks NIC addresses
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1497.001 antivm_queries_computername: Retrieves the computer name

Collection

T1114 infostealer_mail: Collects personal data from local email clients

Command and Control

T1071 network_irc: Connects to the IRC server, probably a botnet part
T1071.001 recon_beacon: The process has sent information about the computer over the network
T1071.001 network_cnc_http: Suspicious HTTP traffic
T1071.003 network_smtp: Sends emails, possibly SPAM
T1095 network_icmp: Creates ICMP traffic
T1102.003 cloud_github: Connects to cloud services of Github (potentially for malicious payload delivery)
T1071.001 network_http: Performs HTTP requests

Other

yara_rules: Static rules
static_pe_anomaly: The PE file structure contains anomalies
pe_in_bcryptdecrypt: PE found in BCryptDecrypt function
ip_domains: Identifies an IP address using external resources
suspicious_process_network: Unusual process network activity detected
dead_host: Connects to IP addresses that do not respond to requests
dead_host_suspicious: Connects to IP addresses with suspicious port that do not respond (possible Meterpreter)
process_crashed: One of the processes has failed
network_ftp: Performs FTP requests
create_rpc_bindings: Creates RPC connection
has_pdb: This executable file has a PDB path
creates_suspended_process: Creates suspended process
dotnet_import_unmanaged_code: Dotnet program statically imports unmanaged functions/modules
get_policy_info: Retrieves information about a Policy object
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
suricata_alert: Malicious traffic detected

Related reports