Managed XDR

vtdl_1742123575_shzth14n (Ryuk) — malware analysis report

File info

Filename
vtdl_1742123575_shzth14n
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
117 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
2ca62e8c0d9695cf916de0c213d625a0acbcbf2a
SHA256
7da8dfa6333085678a12cf016a3ebc41b8a23b9d708f06e1fec9b1231f5b0c09
MD5
e09584fa7b2aad8a0a22fd4278c2e43a

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

T1222 icacls: May obtain or change Discretionary access control lists (DACLs)
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1027.002 packer_entropy: Probably contains compressed or encrypted data
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

T1497.003 antisandbox_sleep: The process attempted to slow down analysis

Collection

T1074.001 access_recyclebin: Manipulation with recyclebin detected

Impact

T1486 modifies_files2: Cryptolocker indicators detected (500 or more files are modified)
T1486 modifies_files: Cryptolocker indicators detected (renamed 500 or more files)
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)
T1486 mass_data_encryption: Encrypts data using the same key (possible ransomware behaviour)

Other

yara_rules: Static rules
ryuk: Detected Ryuk ransomware
no_graphical_activity: No graphic activity
writes_data: Writes big amount of data to disk

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