Managed XDR

c-users-user-appdata-l...ontent.mso-sig19a0.tmp (njRAT) — malware analysis report

File info

Filename
c-users-user-appdata-local-microsoft-windows-inetcache-content.mso-sig19a0.tmp
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: 1251, Author: Administrator, Template: Normal.dotm, Last Saved By: Administrator, Revision Number: 12, Name of Creating Application: Microsoft Office Word, Total Editing Time: 34:00, Create Time/Date: Thu May 2 15:14:00 2024, Last Saved Time/Date: Fri May 3 05:00:00 2024, Number of Pages: 1, Number of Words: 0, Number of Characters: 1, Security: 0
File size
272.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
3a6bedb0fc1418f50f37dd683939e75cb637bbb7
SHA256
2e524e30a1ccf39974036e1bd041d243a5da6ca6e79043df0f32fd8f85311e39
MD5
529dc86057befa535fcb7241745b679e

Malwares

  • njRAT

Signatures

Execution

T1059.001 suspicious_powershell: Suspicious document behaviour (creates powershell process)
T1203 office_exploit_creates_cmd: The document exhibits suspicious behaviour (creates a cmd.exe process)
T1064 office_macros_suspicious: Document contains suspicious macro
T1059.001 suspicious_process: Spawns a suspicious process
T1064 office_macros: The document contains macro
T1064 office_macros_autoexec: The document contains an auto-start macro
T1204.002 office_vb_load: Microsoft Office is loading VB DLL files (macros usage indicator)

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

T1064 office_macros_suspicious: Document contains suspicious macro
T1497.001 antivm_queries_computername: Retrieves the computer name
T1064 office_macros: The document contains macro
T1064 office_macros_autoexec: The document contains an auto-start macro
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process

Discovery

T1497.001 antivm_queries_computername: Retrieves the computer name
T1135 server_share_info: Retrieves information about each shared resource on a server

Command and Control

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

Other

yara_rules: Static rules
dead_host: Connects to IP addresses that do not respond to requests
office_summary: The document contains suspicious metadata
create_rpc_bindings: Creates RPC connection
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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