Managed XDR

screenconnect.clientsetup-1-.exe — malware analysis report

File info

Filename
screenconnect.clientsetup-1-.exe
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
14.1 MB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
8f99cbb0b39d6be868da0c3f7e27d79f0443f048
SHA256
f8a9e685fabe7f6322f63b4374c359b3e41f1799f6e6a9b1eff4e763b730636a
MD5
891722c503465f3683b53f9424f77295

Signatures

Execution

T1059.001 suspicious_powershell: Creates suspicious powershell process
T1059 powershell_cmd_longcommandline: Suspiciously long commandline
T1569.002 persistence_service: Starts newly created service
T1047 antivm_wmi: Uses WMI to detect virtual environment
T1047 has_wmi: Executes one or several WMI requests
T1059.001 suspicious_process: Spawns a suspicious process
T1059.001 url_cmdline: Cmdline of process contains URL
T1059.003 executes_dropped_cmd: Executes dropped batch files
T1059.003 url_cmdline: Cmdline of process contains URL
T1059.003 suspicious_batch: Suspicious batch

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

T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.002 antivm_usbstor: Reads information about usbdevices from regkey
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

Credential Access

T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager

Discovery

T1033 sam_users_discovery: Enumerates users or groups in system with SAM API
T1518.001 wmi_check_av: Uses WMI to check for installed antivirus software
T1057 has_wmi: Executes one or several WMI requests
T1057 process_interest: Enumerates processes
T1016 has_wmi: Executes one or several WMI requests
T1087 has_wmi: Executes one or several WMI requests
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1082 has_wmi: Executes one or several WMI requests
T1049 list_ts_rdp_sessions: Lists ts/rdp sessions
T1087.001 local_account_discovery: Enumerates local accounts
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.002 antivm_usbstor: Reads information about usbdevices from regkey
T1082 reads_csrss: Attempts to read csrss.exe memory
T1082 fingerprint_to_file: Collects data about system and user and writes it to a text file

Command and Control

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

Other

yara_rules: Static rules
creates_in_windows: Creates files in the Windows directory
network_bind: Starts servers listening at None
creates_exe: Creates executable files in the file system
suspicious_process_network: Unusual process network activity detected
executes_dropped_exe: Executes dropped exe files
modifies_certs: Attempts to generate or modify system certificates
unexpected_exception: Unexpected exception
network_powershell: Powershell process network connection detected
network_ftp: Performs FTP 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
creates_in_programdata: Creates files in the ProgramData directory
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
open_winlogon_process: Trying to open winlogon process
ce_info: ScreenConnect Configuration Data found
valid_authenticode: The digital signature has been verified
Managed XDR