Managed XDR

vtdl_8eyxzvm7 (FormBookFormgrabber) — malware analysis report

File info

Filename
vtdl_8eyxzvm7
File type
Microsoft Word 2007+
File size
10.1 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
306b354030fcfa5f664069580a4aa40a208c49fc
SHA256
074f6959ffd4f4115831219c090987ccc173b6e7921be700716e9d9efd83161e
MD5
a7d083b032bad0bd9ea542d1ad34af47

Malwares

  • FormBookFormgrabber

Signatures

Execution

T1203 exploit_CVE_2017_11882: Exploits CVE-2017-11882 vulnerability
T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1203 office_exploit_http: The document exhibits suspicious behaviour (performs HTTP requests)
T1059 autoit: AutoIt script execution detected
T1059 wscript_info_discovery: Collects info about system with Wscript.Shell
T1059.005 obfuscated_vbs: Detected obfuscated VBS

Persistence

T1547 persistence_autorun: Makes itself run automatically on Windows startup
T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1547.004 persistence_autorun: Makes itself run automatically on Windows startup
T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Privilege Escalation

T1547 persistence_autorun: Makes itself run automatically on Windows startup
T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1547.004 persistence_autorun: Makes itself run automatically on Windows startup
T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1055 injection_runpe_2: Executes injected code in another process
T1055.012 injection_runpe: Injects code into another process
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges

Defense Evasion

T1055 injection_runpe_2: Executes injected code in another process
T1027.002 unnamed_memory_regions_contains_pe: One or several unnamed memory regions are PE files
T1055.012 injection_runpe: Injects code into another process
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1218 bypass_dev_utils: Executing .NET utility in a suspended state, potentially for injection
T1564.001 stealth_file: Creates hidden or system files
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1497 antidbg_query_system: Checks for kernel debugger (SystemKernelDebuggerInformation)
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
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
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1027 obfuscated_vbs: Detected obfuscated VBS

Credential Access

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

Discovery

T1497 antidbg_query_system: Checks for kernel debugger (SystemKernelDebuggerInformation)
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1057 process_interest: Enumerates processes
T1518 locates_browser: Attempts to identify where browsers are installed
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
T1033 wscript_info_discovery: Collects info about system with Wscript.Shell
T1083 checks_recent_files: Attempt to check recently opened files through registry

Collection

T1114 infostealer_mail: Collects personal data from local email clients

Command and Control

T1071.001 office_exploit_http: The document exhibits suspicious behaviour (performs HTTP requests)
T1071 network_irc: Connects to the IRC server, probably a botnet part
T1071.001 network_cnc_http: Suspicious HTTP traffic
T1071.004 office_exploit_dns: The document exhibits suspicious behaviour (performs DNS requests)
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
executes_dropped_exe: Executes dropped exe files
unpacker_wrong_base: Possibly, an error occured in the file unpacker
creates_exe: Creates executable files in the file system
runs_utility_without_cmdline: Runs system utility without arguments (non-typical usage)
multiple_useragents: Uses more than one unique User-Agent
suspicious_process_network: Unusual process network activity detected
dns_without_resolve: DNS query without a response
creates_doc: Creates (office) documents in the file system
http_file_not_found: Attempts to download EXE file but receives HTML with an error
suspicious_process: Spawns a suspicious process
unexpected_exception: Unexpected exception
get_memory_status: Gets information about the virtual and physical memory of the system
break_limit_exceeded: Warning: function calls limit has been exceeded
creates_in_programdata: Creates files in the ProgramData directory
get_sid_domain: Get user's SID
get_username: Gets username
test_check_service: Starts services
susp_callbacks: Suspicious usage of some WinAPI with callbacks
create_rpc_bindings: Creates RPC connection
checktokenmembership: Checks user token with CheckTokenMembership call
enables_execute_access_on_stack: Enable execution access on stack

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