Managed XDR

smss.exe — malware analysis report

File info

Filename
smss.exe
File type
MS-DOS executable
File size
320.2 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
8b04807aca49b81942e89e320f67dfbaf3139f59
SHA256
09d2638dc826ad94c28d512739adf36455b1091dc0b3b06c96388ec2fe8d418f
MD5
b55aa77845f4b79e76fcab7756056259

Signatures

Privilege Escalation

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

T1497 antidbg_windows: Checks for open windows typical for debuggers and forensic tools
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
T1027.002 pe_features: Executable file has PE anomalies (may be false positive)
T1027.002 packer_vb: The executable file is packed using VB
T1480 system_default_lang_id_present: Checks the system language
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process

Discovery

T1497 antidbg_windows: Checks for open windows typical for debuggers and forensic tools

Other

yara_rules: Static rules
creates_exe: Creates executable files in the file system
static_pe_anomaly: The PE file structure contains anomalies
creates_in_windows: Creates files in the Windows directory
http_file_not_found: Attempts to download EXE or DLL file but receives HTML with an error
suspicious_process: Spawns a suspicious process
unexpected_exception: Unexpected exception
static_pe_duplicate_sections: The PE file structure contains anomalies: duplicate section names
no_graphical_activity: No graphic activity
pe_overlay: PE file contains overlay