Managed XDR

4-1621595452.m169321p3...-s-214332-w-217145_2-s (Agent Tesla, SnakeKeylogger) — malware analysis report

File info

Filename
4-1621595452.m169321p3376120.a2plcpnl0073.prod.iad2.secureserver.net-s-214332-w-217145_2-s
File type
SMTP mail, UTF-8 Unicode text
File size
209.3 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
ae743ac6ba073ef0d829a5581125fdd1edba8efd
SHA256
3730e9f6ec21c939aa1332350f667d3fad742f54a0b4b70385f540f43db6cdac
MD5
f01bca56bbbbe8fe4725ec5a8333fdc5

Malwares

  • Agent Tesla
  • SnakeKeylogger

Signatures

Execution

T1059.001 suspicious_powershell: Creates suspicious PowerShell process
T1059.001 suspicious_process: Spawns a suspicious process

Persistence

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup

Privilege Escalation

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into 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
T1055 injection_failed: The attempt to inject into a process has failed

Defense Evasion

T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1070 stealth_webhistory: Clears browsing history
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_network_adapters: Checks NIC addresses
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
T1055 injection_failed: The attempt to inject into a process has failed
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name
T1562.001 windows_defender_add_exclusion: Adds a path to Microsoft Defender exclusion list

Credential Access

T1552 infostealer_mail: Collects personal data from local email clients
T1503 infostealer_browser: Retrieves personal information from local Internet browsers
T1552 infostealer_browser: Retrieves personal information from local Internet browsers
T1003.001 dumps_lsass: Dumps lsass.exe process (probably, to extract credentials)
T1552 cookie_files: Accesses cookie files
T1555.003 cookie_files: Accesses cookie files
T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager

Discovery

T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1497.001 antivm_network_adapters: Checks NIC addresses
T1518 locates_browser: Attempts to identify where browsers are installed
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name

Collection

T1114 infostealer_mail: Collects personal data from local email clients

Command and Control

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

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
unpacker_wrong_base: Possibly, an error occurred in the file unpacker
copies_self: Creates a copy of itself
ip_domains: Identifies an IP address using external resources
network_bind: Starts servers listening at None
creates_exe: Creates executable files in the file system
executes_dropped_exe: Executes dropped exe files
process_crashed: One of the processes has failed
dotnet_suspicious_resources_names: Dotnet program has suspicious resources names
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
break_limit_exceeded: Warning: function calls limit has been exceeded
dotnet_obfuscated: Dotnet program is potentially obfuscated
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
open_winlogon_process: Trying to open winlogon process
dotnet_suspicious_entrypoint: Dotnet program has suspicious entrypoint

Related reports

Managed XDR