Managed XDR

c-users-user-desktop-jsmeyehkslan.exe (Ryuk) — malware analysis report

File info

Filename
c-users-user-desktop-jsmeyehkslan.exe
File type
MS-DOS executable, MZ for MS-DOS
File size
125.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
1efd2b51b0d577be35f76ab80594984e1483818b
SHA256
963a77b17b630350df3cb391d3b81c8ea0ac10a14ee207c0409192f1455fe10f
MD5
3085bf9c92413e3e65eb60036122c719

Malwares

  • Ryuk

Signatures

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

T1564.001 stealth_file: Creates hidden or system files
T1497 antidbg_query_process: Checks if the process is being debugged (ProcessDebugPort)
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1070 stealth_window: A process created a hidden window
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 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
ryuk: Detected Ryuk ransomware
copies_self: Creates a copy of itself
creates_exe: Creates executable files in the file system
executes_dropped_exe: Executes dropped exe files
no_graphical_activity: No graphic activity
get_policy_info: Retrieves information about a Policy object

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