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
19 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
9375fe626057b279b40273659451caa62bd151dd
SHA256
f4883ce47c32bbb394bd4ee98918a2d137b5f3a7fb13e79e6cbaf18a169ef2ab
MD5
4c097db3aa3c3d236e50afcff85ac0b9

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
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)
T1555.003 cookie_files: Accesses cookie files
T1552 cookie_files: Accesses cookie files

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
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)

Command and Control

T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp
T1071.001 wininet_https: Performs HTTP/HTTPS requests using WinInet

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
dns_without_resolve: DNS query without a response
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
no_graphical_activity: No graphic activity
create_rpc_bindings: Creates RPC connection
has_pdb: This executable file has a PDB path
message_box: Displays a message
error_drawtext: An error occured while executing the file
origin_langid: Unconventional language of the executable file
get_policy_info: Retrieves information about a Policy object
checktokenmembership: Checks user token with CheckTokenMembership call
writes_data: Writes big amount of data to disk
yara_rules: Static rules