Managed XDR

screenconnect.clientsetup.exe — malware analysis report

File info

Filename
screenconnect.clientsetup.exe
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
14.1 MB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
f6e6bfbbfb39492f1e26845e5784759e7e678fcd
SHA256
0d9bc0e7af0ed8f44b7ae0c8ac8d074fe37edbfeb8f18162815162a58fab4e51
MD5
f89ca81307ebe819aaec465b115156d4

Signatures

Execution

T1569.002 persistence_service: Starts newly created service

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 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

T1036.001 invalid_authenticode: Digital signature of the executable file has failed the verification
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1027.002 packer_entropy: Probably contains compressed or encrypted data
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

Discovery

T1033 sam_users_discovery: Enumerates users or groups in system with SAM API
T1087.001 local_account_discovery: Enumerates local accounts
T1049 list_ts_rdp_sessions: Lists ts/rdp sessions

Exfiltration

T1022 encrypts_pc_info: Collects and encrypts information about the computer (possibly for exfiltration)

Other

yara_rules: Static rules
creates_exe: Creates executable files in the file system
dead_host: Connects to IP addresses that do not respond to requests
create_rpc_bindings: Creates RPC connection
require_administrator: Requests administrator privileges
has_pdb: This executable file has a PDB path
creates_suspended_process: Creates suspended process
break_limit_exceeded: Warning: function calls limit has been exceeded
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
writes_data: Writes big amount of data to disk
pe_overlay: PE file contains overlay
ce_info: ScreenConnect Configuration Data found