Managed XDR

vtdl_1789957149_0zt_bu48 (ZLoader) — malware analysis report

File info

Filename
vtdl_1789957149_0zt_bu48
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: 1251, Author: xXx, Last Saved By: xXx, Name of Creating Application: Microsoft Excel, Create Time/Date: Mon Jan 24 20:48:09 2022, Last Saved Time/Date: Mon Jan 24 20:51:47 2022, Security: 0
File size
115.3 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
21b2382df2379e4d3268db27b72e31298c9034e6
SHA256
da4cb44704108f6c937d9aa26cffbec587e5a32006ca90dcac39db80c5f173b0
MD5
6b2c8871d77680c40b57d308b9d47dae

Malwares

  • ZLoader

Signatures

Execution

T1203 office_exploit_creates_cmd: The document exhibits suspicious behavior (creates a cmd.exe process)
T1064 office_macros_hidden: Document contains suspicious Excel 4.0 macro
T1203 office_exploit_http: The document exhibits suspicious behavior (performs HTTP requests)
T1047 antivm_wmi: Uses WMI to detect virtual environment
T1047 has_wmi: Executes one or several WMI requests
T1059.003 suspicious_cmd: Executes cmd.exe with a suspicious command line
T1059.003 suspicious_process: Spawns a suspicious process
T1204.002 office_com_load: Microsoft Office loads COM DLL files (indicator of COM usage in macros)
T1064 office_macros: The document contains macroses (total: 2)

Privilege Escalation

T1055 injection_failed: The attempt to inject into a process has failed

Defense Evasion

T1218 suspicious_cmdline: Executes a suspicious command
T1064 office_macros_hidden: Document contains suspicious Excel 4.0 macro
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1027 suspicious_cmd: Executes cmd.exe with a suspicious command line
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
T1064 office_macros: The document contains macroses (total: 2)
T1055 injection_failed: The attempt to inject into a process has failed

Credential Access

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

Discovery

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 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization

Command and Control

T1071.001 office_exploit_http: The document exhibits suspicious behavior (performs HTTP requests)
T1071.004 office_exploit_dns: The document exhibits suspicious behavior (performs DNS requests)
T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp
T1071.001 wininet_https: Performs HTTP/HTTPS requests using WinInet

Other

yara_rules: Static rules
network_bind: Starts servers listening at None
suspicious_process_network: Unusual process network activity detected
dead_host: Connects to IP addresses that do not respond to requests
office_summary: The document contains suspicious metadata
creates_suspended_process: Creates suspended process
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services

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