Managed XDR

c-windows-syswow64-drivers-winlogon.exe — malware analysis report

File info

Filename
c-windows-syswow64-drivers-winlogon.exe
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
1 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
399870d4f32573d01ac1c7eddf63d1eeefcf553f
SHA256
b05c799c2df380ccf97a5eb2cf45748606f240515b2ce6830574ec7d87a19ead
MD5
1e7d860b618b307a8de7dd2c1c41a600

Signatures

Initial Access

T1091 spreading_autoruninf: Creates an autorun.inf file

Execution

T1059.001 powershell_through_runspace: Executes powershell script without spawning powershell.exe process

Persistence

T1574 dropper_dll: Creates DLL, which is then loaded into the process

Privilege Escalation

T1574 dropper_dll: Creates DLL, which is then loaded into the process
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

T1027.002 packer_polymorphic: Creates a modified copy of itself
T1564.001 stealth_file: Creates hidden or system files
T1036 system_filename: Created a file named as a common system file
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497 evasion_prefetch: Attempts to detect Sandbox by process run count
T1497 evasion_winlogon: Attempts to detect Sandbox by winlogon sessions
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1027.002 packer_vb: The executable file is packed using VB
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
T1480 system_default_lang_id_present: Checks the system language
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Credential Access

T1552.002 opens_registry_hive_file: Attempts to open Windows registry hive file
T1003.002 opens_registry_hive_file: Attempts to open Windows registry hive file
T1555.003 cookie_files: Accesses cookie files
T1552 cookie_files: Accesses cookie files

Discovery

T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497 evasion_prefetch: Attempts to detect Sandbox by process run count
T1497 evasion_winlogon: Attempts to detect Sandbox by winlogon sessions
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1135 server_share_info: Retrieves information about each shared resource on a server

Lateral Movement

T1091 spreading_autoruninf: Creates an autorun.inf file

Impact

T1486 modifies_files2: Cryptolocker indicators detected (500 or more files are modified)
T1486 modifies_files: Cryptolocker indicators detected (renamed 50 or more files)

Other

yara_rules: Static rules
creates_exe: Creates executable files in the file system
executes_dropped_exe: Executes dropped exe files
creates_in_windows: Creates files in the Windows directory
copies_self: Creates a copy of itself
suspicious_process: Spawns a suspicious process
unexpected_exception: Unexpected exception
no_graphical_activity: No graphic activity
create_rpc_bindings: Creates RPC connection
break_limit_exceeded: Warning: function calls limit has been exceeded
get_policy_info: Retrieves information about a Policy object
changes_ext_type: File extension changed from executable to non-executable or vice versa
writes_data: Writes big amount of data to disk
pe_overlay: PE file contains overlay