Managed XDR

packed.memory.bin (Ryuk) — malware analysis report

File info

Filename
packed.memory.bin
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
131.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
2a9bf249e329ce5f49e5ae1b9dc065090f148eb1
SHA256
b2f298d16917811409c0140cfed659baa2b8c14e1677da0444d6e658b5e6979c
MD5
6ad553c21367f46b057f13010d0fac94

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

T1497 antidbg_query_process: Checks if the process is being debugged (ProcessDebugPort)
T1222 icacls: May obtain or change Discretionary access control lists (DACLs)
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
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 evasion_diskenum: Sandbox evasion using enumeration of partitions

Collection

T1074.001 access_recyclebin: Manipulation with recyclebin detected

Impact

T1486 ransomware_files: Ransomware indicators detected Ryuk (creates keys and the instruction on how to unlock the files)
T1486 ransomware_extensions: Ransomware(s) Ryuk indicators detected (specific extension is added to files)
T1486 ransomware_files_2: Ransomware(s) Ryuk indicators detected (creates keys and the instruction on how to unlock the files)

Other

yara_rules: Static rules
ryuk: Detected Ryuk ransomware
no_graphical_activity: No graphic activity

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