Managed XDR

0044.docm (njRAT) — malware analysis report

File info

Filename
0044.docm
File type
Microsoft Word 2007+
File size
439.2 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
616e2ab5c81236c18bd287ebd064922c82fd247e
SHA256
64b8bd15548534fe0af29efa3c6f50eb2b008e7ab6d37c33d368e0fb2c4bedc7
MD5
6414b738921f82858b07a907f1fc4794

Malwares

  • njRAT

Signatures

Execution

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1059.001 suspicious_powershell: Creates suspicious PowerShell process
T1204.002 office_com_load: Microsoft Office loads COM DLL files (indicator of COM usage in macros)

Persistence

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler

Privilege Escalation

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
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
T1055 injection_failed: The attempt to inject into a process has failed

Defense Evasion

T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1564.001 stealth_file: Creates hidden or system files
T1562 modify_security_warnings: Attempts to modify or disable security notifications
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
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
T1055 injection_failed: The attempt to inject into a process has failed
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1562.001 windows_defender_add_exclusion: Adds a path to Microsoft Defender exclusion list
T1070 stealth_window: A process created a hidden window

Credential Access

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

Discovery

T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1518 locates_browser: Attempts to identify where browsers are installed
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1083 checks_recent_files: Attempt to check recently opened files through registry

Command and Control

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

Other

yara_rules: Static rules
steganographic_png: Possible malicious steganographic PNG
suricata_alert: Malicious traffic detected
office_embedded: Office document contains embedded executable file(s)
creates_exe: Creates executable files in the file system
executes_dropped_exe: Executes dropped exe files
copies_self: Creates a copy of itself
network_bind: Starts servers listening at None
dns_without_resolve: DNS query without a response
dotnet_suspicious_resources_names: Dotnet program has suspicious resources names
has_pdb: This executable file has a PDB path
dotnet_suspicious_module_name: Dotnet program has suspicious module name
creates_suspended_process: Creates suspended process
break_limit_exceeded: Warning: function calls limit has been exceeded
dotnet_obfuscated: Dotnet program is potentially obfuscated
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
dotnet_suspicious_entrypoint: Dotnet program has suspicious entrypoint
dotnet_suspicious_cultureidentifier: Dotnet program contains invalid CultureIdentifier

Related reports

Managed XDR