Managed XDR

vtdl_1741778307_bxmgr5fj (njRAT) — malware analysis report

File info

Filename
vtdl_1741778307_bxmgr5fj
File type
HTML document, ASCII text, with CRLF line terminators
File size
9.7 KB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
7e92cae7134c6ac4afb3deb905225e40baeb705f
SHA256
ceca45f3596d9747af64cf324f3242cd431870bc37c2ef8df8f395e84e17d62f
MD5
9ebd4216c8bcc3a8c8a9a7f7a5220567

Malwares

  • njRAT

Signatures

Execution

T1059.001 suspicious_powershell: Creates suspicious powershell process

Persistence

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup

Privilege Escalation

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1134.004 ppid_spoofing: Parent pid spoofing detected
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another 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

T1134.004 ppid_spoofing: Parent pid spoofing detected
T1218 bypass_dev_utils: Executing .NET utility in a suspended state, potentially for injection
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_disk_size: Checks the amount of free disk space
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
T1070 stealth_window: A process created a hidden window
T1497.001 antivm_generic_video: Checks information about video adapters in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity

Credential Access

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

Discovery

T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1518 locates_browser: Attempts to identify where browsers are installed
T1497.001 antivm_generic_video: Checks information about video adapters in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity
T1135 server_share_info: Retrieves information about each shared resource on a server

Collection

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

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
pe_in_bcryptdecrypt: PE found in BCryptDecrypt function
copies_self: Creates a copy of itself
suspicious_pdf: PDF file with suspicious content
pdf_page: Contains only one page
dead_host: Connects to IP addresses that do not respond to requests
suspicious_pdf_link: PDF file with suspicious hyperlink or content
dotnet_suspicious_resources_names: Dotnet program has suspicious resources names
create_rpc_bindings: Creates RPC connection
pdf_compressed_stream: Contains an object with compressed stream
creates_suspended_process: Creates suspended process
dotnet_import_unmanaged_code: Dotnet program statically imports unmanaged functions/modules
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
office_links: Office file contains external links
checktokenmembership: Checks user token with CheckTokenMembership call
suricata_alert: Malicious traffic detected
dotnet_suspicious_module_name: Dotnet program has suspicious module name

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