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
d57ee55cdd80e93339f1da2766d68b0b92ac093c
SHA256
45e3a985682593d8a900bdc3633ac43267a88166f798d47285b7df5ea08a259f
MD5
f29476916b7c0760c673462846b3c44b

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