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
29.7 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
a6d3fee002ec92807bd79fe18512f137f8e2f13c
SHA256
4cc6d0be2e249a7ccf41d793cad3e011074f562cd82e6313089fb07621e8e52d
MD5
8613d2cb9ce95b5a4eb05e8c6066ef8f

Signatures

Execution

T1047 antivm_wmi: Uses WMI to detect virtual environment
T1047 has_wmi: Executes one or several WMI requests
T1059.006 drops_python_dll: Drops python dll

Persistence

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Privilege Escalation

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
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

T1497.002 antisandbox_mouse_hook: Installs a hook to monitor mouse movements
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1564.001 stealth_file: Creates hidden or system files
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1036 system_filename: Created a file named as a common system file
T1036 system_procname: Created a process named as a common system process
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1480 system_default_lang_id_present: Checks the system language
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Credential Access

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

Discovery

T1497.002 antisandbox_mouse_hook: Installs a hook to monitor mouse movements
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1518 recon_programs: Collects information about installed programs
T1057 process_interest: Enumerates processes
T1082 has_wmi: Executes one or several WMI requests
T1497.003 antisandbox_sleep: The process attempted to slow down analysis

Collection

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

Other

network_bind: Starts servers listening at 127.0.0.1:33156, 127.0.0.1:33157
bitcoin_opencl: Installs the OpenCL library, possibly to mine bitcoins
creates_exe: Creates executable files in the file system
suspicious_process_network: Unusual process network activity detected
dead_host: Connects to IP addresses that do not respond to requests
suspicious_process: Spawns a suspicious process
executes_dropped_exe: Executes dropped exe files
create_rpc_bindings: Creates RPC connection
has_pdb: This executable file has a PDB path
break_limit_exceeded: Warning: function calls limit has been exceeded
origin_langid: Unconventional language of the executable file
checktokenmembership: Checks user token with CheckTokenMembership call
writes_data: Writes big amount of data to disk
yara_rules: Static rules