Managed XDR

c0r141018t250589243.eml (XWorm) — malware analysis report

File info

Filename
c0r141018t250589243.eml
File type
SMTP mail, ASCII text, with very long lines
File size
849.1 KB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
6b5bab6465b8d06c1bc408dc9e00da7e754ed46c
SHA256
085012fee6356e1624d410cc9fd2308d194c8ddc8c11a2ed53176dfe313659fa
MD5
357984538406fc17feca6ee725626f90

Malwares

  • XWorm

Signatures

Execution

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1059.001 suspicious_powershell: Creates suspicious powershell process

Persistence

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler

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
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
T1564.001 stealth_file: Creates hidden or system files
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
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
T1497.001 antivm_generic_video: Checks information about video adapters in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity
T1562.001 windows_defender_add_exclusion: Adds a path to Microsoft Defender exclusion list
T1070 stealth_window: A process created a hidden window

Discovery

T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1518 locates_browser: Attempts to identify where browsers are installed
T1497.001 antivm_generic_video: Checks information about video adapters in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity

Exfiltration

T1022 encrypts_pc_info: Collects and encrypts information about the computer (possibly for exfiltration)

Other

steganographic_png: Possible malicious steganographic PNG
yara_rules: Static rules
creates_exe: Creates executable files in the file system
copies_self: Creates a copy of itself
create_rpc_bindings: Creates RPC connection
has_pdb: This executable file has a PDB path
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
error_drawtext: An error occured while executing the file
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
writes_data: Writes big amount of data to disk

Related reports

Managed XDR