Managed XDR

wextract.exe-.mui — malware analysis report

File info

Filename
wextract.exe-.mui
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
7.1 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
f85fa2db08989a3ebe8475388e98871621cbaa28
SHA256
91967436d47a368854da14fb056885274591fe89cfc5e83102de93cf88eb7e67
MD5
ff70053dfac0eeaf394db671ebf12fd4

Signatures

Execution

T1569.002 persistence_service: Starts newly created service
T1059.003 executes_dropped_cmd: Executes dropped batch files
T1059.003 suspicious_batch: Suspicious batch

Persistence

T1543.003 creates_service: Creates a service, that will start automatically
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Privilege Escalation

T1543.003 creates_service: Creates a service, that will start automatically
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

T1553.004 registers_root_cert: Registers a new root certificate
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Discovery

T1497.001 antivm_disk_size: Checks the amount of free disk space
T1518 locates_browser: Attempts to identify where browsers are installed
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1082 fingerprint_to_file: Collects data about system and user and writes it to a text file
T1135 server_share_info: Retrieves information about each shared resource on a server

Impact

T1565.001 overwrites_firefox_settings: Modifies Mozilla Firefox settings

Other

creates_in_windows: Creates files in the Windows directory
modifies_certs: Attempts to generate or modify system certificates
network_bind: Starts servers listening at 0.0.0.0:9003
creates_exe: Creates executable files in the file system
create_process_failed: Could not start the process
executes_dropped_exe: Executes dropped exe files
create_rpc_bindings: Creates RPC connection
has_pdb: This executable file has a PDB path
creates_in_programdata: Creates files in the ProgramData directory
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
yara_rules: Static rules