Managed XDR

3cdc0a8a-6478-44ed-aef3-6ae13e52f6c4.eml (FormBookFormgrabber) — malware analysis report

File info

Filename
3cdc0a8a-6478-44ed-aef3-6ae13e52f6c4.eml
File type
HTML document, UTF-8 Unicode text, with CRLF line terminators
File size
1.3 MB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
1fb257fdd2baa9a0d8a37afc179dc82c80254c36
SHA256
969debf064fe50faab237065fe5d91aa22d88c417c716c017c5c59edfa56eb8e
MD5
eaf3ba70517b77b902659116e3aed795

Malwares

  • FormBookFormgrabber

Signatures

Initial Access

T1192 html_urls: HTML-document downloads a file

Execution

T1059.001 suspicious_powershell: Creates suspicious PowerShell 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

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
T1497 manual_ntdll_load: Creates copy of ntdll.dll in memory
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
T1564.001 stealth_file: Creates hidden or system files
T1497 antidbg_query_system: Checks for kernel debugger (SystemKernelDebuggerInformation)
T1497 antidbg_query_process: Checks if the process is being debugged (ProcessDebugPort)
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
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
T1070 stealth_window: A process created a hidden window
T1562.001 windows_defender_add_exclusion: Adds a path to Microsoft Defender exclusion list

Credential Access

T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager

Discovery

T1497 manual_ntdll_load: Creates copy of ntdll.dll in memory
T1497 antidbg_query_system: Checks for kernel debugger (SystemKernelDebuggerInformation)
T1497 antidbg_query_process: Checks if the process is being debugged (ProcessDebugPort)
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1518 locates_browser: Attempts to identify where browsers are installed
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.003 antisandbox_sleep: The process attempted to slow down analysis

Command and Control

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

Other

steganographic_png: Possible malicious steganographic PNG
yara_rules: Static rules
creates_exe: Creates executable files in the file system
copies_self: Creates a copy of itself
network_bind: Starts servers listening at None
no_graphical_activity: No graphic activity
dotnet_suspicious_resources_names: Dotnet program has suspicious resources names
dotnet_suspicious_module_name: Dotnet program has suspicious module name
creates_suspended_process: Creates suspended process
dotnet_antimetadata_analysis: Dotnet program has anti-analysis tricks
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
dotnet_suspicious_entrypoint: Dotnet program has suspicious entrypoint

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