Managed XDR

document-macro_purged.doc (njRAT) — malware analysis report

File info

Filename
document-macro_purged.doc
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: -535, Author: , Template: Normal, Last Saved By: Test_device, Revision Number: 20, Name of Creating Application: Microsoft Office Word, Total Editing Time: 01:12:00, Create Time/Date: Wed Jan 24 20:21:00 2024, Last Saved Time/Date: Sun May 12 14:07:00 2024, Number of Pages: 1, Number of Words: 0, Number of Characters: 1, Security: 0
File size
93.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
ef059dc56bd1e5de5fe2cf45277dc164400f3835
SHA256
790c86593d2d86364a1118c304c857824a56f14a9f8661f0a22e86953d1c81f4
MD5
0817661adc483a2add42cf8a5edd222a

Malwares

  • njRAT

Signatures

Execution

T1203 office_write_exe: Office document dropped an executable file
T1203 office_exploit_http: The document exhibits suspicious behaviour (performs HTTP requests)
T1204.002 office_vb_load: Microsoft Office is loading VB DLL files (macros usage indicator)
T1064 office_macros: The document contains macro
T1064 office_macros_autoexec: The document contains an auto-start macro

Privilege Escalation

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 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1064 office_macros: The document contains macro
T1064 office_macros_autoexec: The document contains an auto-start macro

Credential Access

T1552 cookie_files: Accesses cookie files
T1555.003 cookie_files: Accesses cookie files

Discovery

T1083 checks_recent_files: Attempt to check recently opened files through registry

Command and Control

T1105 office_dl_write_exe: Probably malicious office document (downloads/drops EXE files to disk)
T1071.001 office_exploit_http: The document exhibits suspicious behaviour (performs HTTP requests)
T1071.004 office_exploit_dns: The document exhibits suspicious behaviour (performs DNS requests)
T1071.001 network_http: Performs HTTP requests
T1071.001 wininet_https: Performs HTTP/HTTPS requests using WinInet

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
creates_exe: Creates executable files in the file system
create_process_failed: Could not start the process
process_crashed: One of the processes has failed
unexpected_exception: Unexpected exception
office_summary: The document contains suspicious metadata
create_rpc_bindings: Creates RPC connection
error_drawtext: An error occured while executing the file
get_policy_info: Retrieves information about a Policy object
test_check_service: Starts services
antisandbox_check_graphics_card: Uses CreateDXGIFactory, potentially to detect graphics card
checktokenmembership: Checks user token with CheckTokenMembership call

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