Managed XDR

a0ccb9019b90716c8ee1bc...8987e65cef2e6f_new.exe (Lorenz) — malware analysis report

File info

Filename
a0ccb9019b90716c8ee1bc0829e0e04cf7166be2f25987abbc8987e65cef2e6f_new.exe
File type
PE32 executable (console) Intel 80386, for MS Windows
File size
1.1 MB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
6cf5e399f79341a4d3fa4d8214e83315194382c0
SHA256
34b29292c2053ba6652f47f4b6ea78c7c24c8ce4abe27247e0bc92d1cfb078a3
MD5
e1202058e6563517bec8da470498259a

Malwares

  • Lorenz

Signatures

Execution

T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1047 antivm_wmi: Uses WMI to detect virtual environment
T1047 has_wmi: Executes one or several WMI requests

Persistence

T1053.005 persistence_autorun: Makes itself run automatically on Windows startup

Privilege Escalation

T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
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

T1218 wmic_create_process: Creates a process using wmic.exe utility
T1126 disconnects_mapped_device: Removes network share connection
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.002 antivm_usbstor: Reads information about usbdevices from regkey
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1070 stealth_window: A process created a hidden window

Credential Access

T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager

Discovery

T1082 has_wmi: Executes one or several WMI requests
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1057 has_wmi: Executes one or several WMI requests
T1057 process_interest: Enumerates processes
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.002 antivm_usbstor: Reads information about usbdevices from regkey

Exfiltration

T1022 encrypts_pc_info: Collects and encrypts information about the computer (possibly for exfiltration)

Impact

T1486 modifies_files: Cryptolocker indicators detected (renamed 500 or more files)
T1486 mass_data_encryption: Encrypts data using the same key (possible ransomware behaviour)
T1485 deletes_files: Removes 500 or more files from C: drive

Other

yara_rules: Static rules
lorenz: Detected Lorenz ransomware
creates_in_windows: Creates files in the Windows directory
cryptolocker_wallpaper: Ransomware indicators detected (changes the desktop wallpaper file)
creates_suspended_process: Creates suspended process
break_limit_exceeded: Warning: function calls limit has been exceeded
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
writes_data: Writes big amount of data to disk

Related reports

Managed XDR