Managed XDR

vtdl_1788629533_382yi564 (AsyncRAT) — malware analysis report

File info

Filename
vtdl_1788629533_382yi564
File type
RFC 822 mail, UTF-8 Unicode (with BOM) text, with CRLF line terminators
File size
28.1 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
dff9aa1f240f8ee3ac726927a9641213ea2a4709
SHA256
fa1aaee81963151abd3966db3d7019d4db2bae1ae75a058533e30a2fd783ca20
MD5
4e651ccf65db5646ef261ff181761d82

Malwares

  • AsyncRAT

Signatures

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
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1055 injection_failed: The attempt to inject into a process has failed
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

T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1036.001 invalid_authenticode: Digital signature of the executable file has failed the verification
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_disk_size: Checks the amount of free disk space
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
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name
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_disk_size: Checks the amount of free disk space
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name

Command and Control

T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp
T1102.003 references_google: Contains links to cloud services of Google (potentially for malicious payload delivery)

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
creates_exe: Creates executable files in the file system
unpacker_wrong_base: Possibly, an error occurred in the file unpacker
pe_in_bcryptdecrypt: PE found in BCryptDecrypt function
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
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
asyncrat_mutexes: Creates mutexes typical for AsyncRAT
checktokenmembership: Checks user token with CheckTokenMembership call
pe_overlay: PE file contains overlay
dotnet_suspicious_entrypoint: Dotnet program has suspicious entrypoint

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