Managed XDR

vtdl_ildfk5fm (FormBookFormgrabber) — malware analysis report

File info

Filename
vtdl_ildfk5fm
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 6.2, Code page: 1252, Name of Creating Application: Microsoft Excel, Create Time/Date: Sat Sep 16 00:00:00 2006, Last Saved Time/Date: Mon Nov 28 16:41:03 2022, Security: 1
File size
813 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
a6621f62281c559c0ca622ac64a9330d540a1cea
SHA256
6f01ffd758dbda45a940a7f396fc02e29d10ea1cba8d0dbc03f3902e97821c85
MD5
c196268a0bbe6cb62aa9a304e2a5eb89

Malwares

  • FormBookFormgrabber

Signatures

Execution

T1203 exploit_CVE_2017_11882: Exploits CVE-2017-11882 vulnerability
T1059.001 suspicious_powershell: Suspicious document behaviour (creates powershell process)
T1053.005 creates_tasks: Creates a delayed task using Task Manager
T1203 office_exploit_http: The document exhibits suspicious behaviour (performs HTTP requests)
T1064 office_macros: The document contains macro

Persistence

T1053.005 creates_tasks: Creates a delayed task using Task Manager

Privilege Escalation

T1053.005 creates_tasks: Creates a delayed task using Task Manager
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

Defense Evasion

T1055 injection_runpe_2: Executes injected code in another process
T1055.012 injection_runpe: Injects code into another process
T1027.002 unnamed_memory_regions_contains_pe: One or several unnamed memory regions are PE files
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1497 antidbg_query_system: Checks for kernel debugger (SystemKernelDebuggerInformation)
T1497 antidbg_query_process: Checks if the process is being debugged (ProcessDebugPort)
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1064 office_macros: The document contains macro
T1070 stealth_window: A process created a hidden window

Discovery

T1497 antidbg_query_system: Checks for kernel debugger (SystemKernelDebuggerInformation)
T1497 antidbg_query_process: Checks if the process is being debugged (ProcessDebugPort)
T1082 uses_windows_utilities: Uses Windows utilities for basic Windows functionality
T1518 locates_browser: Attempts to identify where browsers are installed
T1083 checks_recent_files: Attempt to check recently opened files through registry
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1082 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1082 recon_systeminfo: Collects system information (ipconfig, netstat, systeminfo, net)

Command and Control

T1071.001 office_exploit_http: The document exhibits suspicious behaviour (performs HTTP requests)
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 wininet_https: Performs HTTP/HTTPS requests using WinInet

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
formbook: FormBook stealer found
creates_exe: Creates executable files in the file system
runs_utility_without_cmdline: Runs system utility without arguments (non-typical usage)
suspicious_process_network: Unusual process network activity detected
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
office_summary: The document contains suspicious metadata
get_sid_domain: Get user's SID
get_username: Gets username
test_check_service: Starts services
create_rpc_bindings: Creates RPC connection
checktokenmembership: Checks user token with CheckTokenMembership call

Related reports