Managed XDR

temp-83-.eml (QuasarRat) — malware analysis report

File info

Filename
temp-83-.eml
File type
RFC 822 mail, ASCII text, with CRLF line terminators
File size
4.4 MB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
272837cd74a0579867ec419b448279707925f920
SHA256
0f49f8f5398e2a178fa65a6333019ce3149ea2d0e5711623743e6db465dbe0a5
MD5
6741e2b978066afaaedc7636430669ee

Malwares

  • QuasarRat

Signatures

Execution

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1053.005 persistence_autorun: Makes itself run automatically on Windows startup

Persistence

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1053.005 persistence_autorun: Makes itself run automatically on Windows startup

Privilege Escalation

T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
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
T1055 injection_failed: The attempt to inject into a process has failed

Defense Evasion

T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1564.001 stealth_file: Creates hidden or system files
T1564.004 removes_zoneid_ads: Attempts to hide the indications that the file was downloaded from the Internet
T1497 antidbg_query_process: Checks if the process is being debugged (ProcessDebugPort)
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
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
T1055 injection_failed: The attempt to inject into a process has failed

Discovery

T1497 antidbg_query_process: Checks if the process is being debugged (ProcessDebugPort)
T1497.003 antisandbox_sleep: The process attempted to slow down analysis

Other

yara_rules: Static rules
static_pe_anomaly: The PE file structure contains anomalies
unpacker_wrong_base: Possibly, an error occured in the file unpacker
pe_in_bcryptdecrypt: PE found in BCryptDecrypt function
copies_self: Creates a copy of itself
page_noaccess: Disables access to a memory region
creates_exe: Creates executable files in the file system
executes_dropped_exe: Executes dropped exe files
no_graphical_activity: No graphic activity
dotnet_suspicious_resources_names: Dotnet program has suspicious resources names
creates_suspended_process: Creates suspended process
dotnet_import_unmanaged_code: Dotnet program statically imports unmanaged functions/modules
break_limit_exceeded: Warning: function calls limit has been exceeded
dotnet_obfuscated: Dotnet program is potentially obfuscated
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
dotnet_suspicious_entrypoint: Dotnet program has suspicious entrypoint
dotnet_downloader_possible_network_problem: Dotnet program possibly has network problem

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