Managed XDR

2026-08-03_c8e005bdd94...cos_smoke-loader_vidar (njRAT) — malware analysis report

File info

Filename
2026-08-03_c8e005bdd94a8e8442891998714fc663_amadey_elex_glassworm_hellokitty_icedid_luca-stealer_njrat_ransomhub_remcos_smoke-loader_vidar
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
5.3 MB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
0657cfdf912e162bcc09512f1a6fdb7f101d4795
SHA256
8cdacf64301357c70f144f8d13be3707b84bff171ac0f072992619c114c9aa30
MD5
c8e005bdd94a8e8442891998714fc663

Malwares

  • njRAT

Signatures

Execution

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

Persistence

T1547.002 persistence_autorun: Makes itself run automatically on Windows startup
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

T1547.002 persistence_autorun: Makes itself run automatically on Windows startup
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
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name
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
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1057 has_wmi: Executes one or several WMI requests
T1082 has_wmi: Executes one or several WMI requests
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name
T1049 list_ts_rdp_sessions: Lists ts/rdp sessions
T1087.001 local_account_discovery: Enumerates local accounts

Command and Control

T1568.002 dga_domains: Connects to DGA domains
T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp

Other

yara_rules: Static rules
njrat: NJRat indicators detected
network_bind: Starts servers listening at None
creates_exe: Creates executable files in the file system
dns_without_resolve: DNS query without a response
executes_dropped_exe: Executes dropped exe files
no_graphical_activity: No graphic activity
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
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
ce_info: ScreenConnect Configuration Data found

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