Managed XDR

ffd933ad53f22a0f10cceb...c6b37c157ee45f_new.exe (AvosLocker, Avos) — malware analysis report

File info

Filename
ffd933ad53f22a0f10cceb4986087258f72dffdd36999b7014c6b37c157ee45f_new.exe
File type
PE32 executable (console) Intel 80386, for MS Windows
File size
807.5 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
a622a9e066e093bbec8f1cbbfcd0e47aef11ef9b
SHA256
08ae6f0cb7c3b7becbd712b9f4dd00b3714f81b48d44505b3d1eb0d28dab434a
MD5
f2a92089091b443f2a236cc36d0a0e29

Malwares

  • AvosLocker
  • Avos

Signatures

Execution

T1047 has_wmi: Executes one or several WMI requests
T1047 antivm_wmi: Uses WMI to detect virtual environment
T1059.001 suspicious_process: Spawns a suspicious 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 unnamed_memory_regions: Code was executed in unnamed regions
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
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

T1082 has_wmi: Executes one or several WMI requests
T1057 process_interest: Enumerates processes
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1083 crawls_directories: Opens a huge number of directories all over disk C: (possibly, searches for sensitive data)
T1518 locates_browser: Attempts to identify where browsers are installed
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization

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)
T1490 vssadmin_delete_shadows: Attempt to delete volume shadow copies
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
ransomware_shadowcopy: Removes volume shadow copies
ransomware_bcdedit: Runs bcdedit commands specific to ransomware
creates_suspended_process: Creates suspended process
break_limit_exceeded: Warning: function calls limit has been exceeded
test_check_service: Starts services
writes_data: Writes big amount of data to disk

Related reports

Managed XDR