Managed XDR

rutserv.exe (RMS) — malware analysis report

File info

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

Environment

w10/x64 en

Hashes

SHA1
ce43892828c855c4621c64989d5f41269fe3dc3a
SHA256
a5f50841ad81e77c34b9df7c6e6cbc756b80340814ee425989c978fa821d9cd5
MD5
f77108bc525a31101c62e4802b0299b2

Malwares

  • RMS

Signatures

Privilege Escalation

T1068 integrity_level: Process privileges have been escalated
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
T1497.001 antivm_generic_cpu: Checks the CPU name, possibly for anti-virtualization
T1497.001 antisandbox_productid: Obtains Windows ProductID, probably to fingerprint a sandbox
T1497.001 antivm_firmware: Attempts to detect VM by firmware
T1036.001 invalid_authenticode: Digital signature of the executable file has failed the verification
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
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497 antidbg_strings: Checks for malware analysis tools (specific strings found)
T1497 checks_firmware: Attempts to read firmware information (potentially for evasion)
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name
T1480 system_default_lang_id_present: Checks the system language

Credential Access

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

Discovery

T1497.001 antivm_generic_cpu: Checks the CPU name, possibly for anti-virtualization
T1497.001 antisandbox_productid: Obtains Windows ProductID, probably to fingerprint a sandbox
T1497.001 antivm_firmware: Attempts to detect VM by firmware
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1057 process_interest: Enumerates processes
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497 antidbg_strings: Checks for malware analysis tools (specific strings found)
T1497 checks_firmware: Attempts to read firmware information (potentially for evasion)
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name
T1082 checks_firmware: Attempts to read firmware information (potentially for evasion)

Command and Control

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

Other

yara_rules: Static rules
rms_lms_bins: Listens on port 5650 used by RMS\LiteManager
network_bind: Starts servers listening at 0.0.0.0:5650, None
process_crashed: One of the processes has failed
no_graphical_activity: No graphic activity
create_rpc_bindings: Creates RPC connection
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
pe_overlay: PE file contains overlay
open_winlogon_process: Trying to open winlogon process
js_suspicious: Suspicious javascript

Related reports

Managed XDR