Managed XDR

84d94c032543e8797a5143...13d1464093af2d_new.exe (AvosLocker, Avos) — malware analysis report

File info

Filename
84d94c032543e8797a514323b0b8fd8bd69b4183f17351628b13d1464093af2d_new.exe
File type
PE32 executable (console) Intel 80386, for MS Windows
File size
921 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
2fbfb823b49ca8e949603c97e6d5fb017dacb048
SHA256
c5a6590144510b3fb87741889591288c1b1f7179f7a8811240ad37449d16f186
MD5
64816956990eb73d38e28720dac84ae3

Malwares

  • AvosLocker
  • Avos

Signatures

Execution

T1059.001 suspicious_powershell: Creates suspicious powershell process

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

T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
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
T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager

Discovery

T1083 crawls_directories: Opens a huge number of directories all over disk C: (possibly, searches for sensitive data)
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers

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_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
creates_suspended_process: Creates suspended process
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
writes_data: Writes big amount of data to disk

Related reports

Managed XDR