Managed XDR

youwin.exe (TrickBot) — malware analysis report

File info

Filename
youwin.exe
File type
PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows
File size
379.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
ba5529fe2d6648ebfa93c17145f5570f448e1111
SHA256
dfe2c886d9a6e9b26cdddba621fda00832a59def9813177863723e33c8011b0c
MD5
c3f3773a596db65c6491b578db621c45

Malwares

  • TrickBot

Signatures

Execution

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1059.001 suspicious_powershell: Creates suspicious powershell process
T1059.001 suspicious_process: Spawns a suspicious process

Persistence

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1574.011 persistence_services: Modifies Services registry key
T1543.003 persistence_services: Modifies Services registry key

Privilege Escalation

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1574.011 persistence_services: Modifies Services registry key
T1543.003 persistence_services: Modifies Services registry key
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

T1562.001 disables_security: Disables Windows Security options
T1027.002 unnamed_memory_regions_contains_pe: One or several unnamed memory regions are PE files
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1574.011 persistence_services: Modifies Services registry key
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
T1497 antidbg_strings: Checks for malware analysis tools (specific strings found)
T1497.003 antisandbox_sleep: The process attempted to slow down analysis

Discovery

T1518.001 antiav_detectservice: Attempts to detect installed antiviruses by a certain service
T1057 process_interest: Enumerates processes
T1518 locates_browser: Attempts to identify where browsers are installed
T1497 antidbg_strings: Checks for malware analysis tools (specific strings found)
T1497.003 antisandbox_sleep: The process attempted to slow down analysis

Impact

T1489 stops_service: Stops Windows services
T1489 net_stop: Stops services through the use of net stop

Other

yara_rules: Static rules
vir_napolar: Napolar indicators detected
copies_self: Creates a copy of itself
creates_exe: Creates executable files in the file system
executes_dropped_exe: Executes dropped exe files
no_graphical_activity: No graphic activity
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
get_policy_info: Retrieves information about a Policy object

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