Managed XDR

home-petik-ss-malware-...elex_luca-stealer_lynx (AvosLocker, Avos) — malware analysis report

File info

Filename
home-petik-ss-malware-2025-05-21_026edda2d0855d180df7e2ea785b4516_amadey_avoslocker_black-basta_cobalt-strike_elex_luca-stealer_lynx
File type
PE32 executable (console) Intel 80386, for MS Windows
File size
805.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
0c4af806bbde0cdee954fca4ed2892d199013d5b
SHA256
cfa66b40cd5f91697e47c5b434db4769d8a896ce455fe91614fb4065c172b08e
MD5
026edda2d0855d180df7e2ea785b4516

Malwares

  • AvosLocker
  • Avos

Signatures

Execution

T1059.001 suspicious_powershell: Creates suspicious powershell process

Privilege Escalation

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

T1027.002 packer_entropy: Probably contains compressed or encrypted data
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

Credential Access

T1552.001 infostealer_bitcoin: Attempts to obtain access to Bitcoin/ALTCoin wallets

Discovery

T1083 crawls_directories: Opens a huge number of directories all over disk C: (possibly, searches for sensitive data)
T1057 process_interest: Enumerates processes
T1518 locates_browser: Attempts to identify where browsers are installed

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_message: Ransomware indicators detected (possible ransom message creation)
T1486 ransomware_extensions: Ransomware(s) AvosLocker indicators detected (specific extension is added to files)
T1486 ransomware_files_2: Ransomware(s) AvosLocker 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
ransomware_avos: Detected Avos ransomware
cryptolocker_wallpaper: Ransomware indicators detected (changes the desktop wallpaper file)
unexpected_exception: Unexpected exception
break_limit_exceeded: Warning: function calls limit has been exceeded
writes_data: Writes big amount of data to disk

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