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
4.2 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
bb509f3e28bb50aaee09cb382eec3b99289b2149
SHA256
e189c841a7361a9e2e3bf555a313fb6046f0a29090a6aba9e72ace8c5c251eb3
MD5
7d3fa649b7e5bf07d46a3b0fbc31b6c8

Signatures

Execution

T1059.003 suspicious_batch: Suspicious batch

Persistence

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

Privilege Escalation

T1055.012 injection_runpe: Injects code into another process
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

T1055.012 injection_runpe: Injects code into another process
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1027.002 packer_entropy: Probably contains compressed or encrypted data
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
T1482 enumerates_domain_trusts: Enumerates trust domains

Other

creates_many_processes: Spawns a lot of processes (over 70)
static_pe_anomaly: The PE file structure contains anomalies
creates_exe: Creates executable files in the file system
create_rpc_bindings: Creates RPC connection
has_pdb: This executable file has a PDB path
creates_suspended_process: Creates suspended process
message_box: Displays a message
origin_langid: Unconventional language of the executable file
get_policy_info: Retrieves information about a Policy object
creates_in_programdata: Creates files in the ProgramData directory
enables_execute_access_on_stack: Enable execution access on stack
executes_dropped_exe: Executes dropped exe files
yara_rules: Static rules