Managed XDR

tjprojmain.exe (BlackMatter, Lockbit) — malware analysis report

File info

Filename
tjprojmain.exe
File type
MS-DOS executable, MZ for MS-DOS
File size
282.3 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
2eea2217fa370c76e67779a5ded9ff55a9318f5e
SHA256
50fe461966f54c136bf3d841138a92a8a0c57dbaa120438456c2d4d4240a9008
MD5
ddeacf71c22327930f498f180f1d3683

Malwares

  • BlackMatter
  • Lockbit

Signatures

Execution

T1047 has_wmi: Executes one or several WMI requests
T1047 antivm_wmi: Uses WMI to detect virtual environment

Persistence

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1574.011 persistence_services: Modifies Services registry key
T1543.003 persistence_services: Modifies Services registry key

Privilege Escalation

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1574.011 persistence_services: Modifies Services registry key
T1543.003 persistence_services: Modifies Services registry key
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

T1562.001 disables_security: Disables Windows Security options
T1564.001 stealth_file: Creates hidden or system files
T1112 stealth_hiddenreg: Attempts to change Explorer settings so that hidden files won't be displayed
T1036 system_filename: Created a file named as a common system file
T1036 system_procname: Created a process named as a common system process
T1574.011 persistence_services: Modifies Services registry key
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1027.002 packer_vb: The executable file is packed using VB
T1480 system_default_lang_id_present: Checks the system language
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 antivm_usbstor: Reads information about usbdevices from regkey

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

T1057 has_wmi: Executes one or several WMI requests
T1082 has_wmi: Executes one or several WMI requests
T1518.001 antiav_detectservice: Attempts to detect installed antiviruses by a certain service
T1057 pidbruteforce: Enumerates processes using PID Bruteforce
T1057 process_interest: Enumerates processes
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1518 locates_browser: Attempts to identify where browsers are installed
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 antivm_usbstor: Reads information about usbdevices from regkey

Collection

T1074.001 access_recyclebin: Manipulation with recyclebin detected

Command and Control

T1568.002 dga_domains: Connects to DGA domains
T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp
T1071.001 wininet_https: Performs HTTP/HTTPS requests using WinInet

Impact

T1486 modifies_files: Cryptolocker indicators detected (renamed 500 or more files)
T1486 modifies_files2: Cryptolocker indicators detected (500 or more files are modified)
T1561 wiper_zeroed_bytes: Overwrites multiple files with zero bytes (hex 00)
T1489 stops_service: Stops Windows services
T1486 ransomware_message: Ransomware indicators detected (possible ransom message creation)
T1486 ransomware_files: Ransomware indicators detected BlackMatter (creates keys and the instruction on how to unlock the files)
T1489 service_control_stop: Stops services via ControlService

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
ce_info: Lockbit Configuration Data found
blackmatter: Detected ransomware BlackMatter
lockbit: Detected ransomware Lockbit
executes_dropped_exe: Executes dropped exe files
dns_tld_onion: Connects to TLD .onion (TOR), possibly malware
created_exe_is_similar_to_system_one: Created exe is similar to system one
creates_in_windows: Creates files in the Windows directory
network_bind: Starts servers listening at None
creates_exe: Creates executable files in the file system
dns_without_resolve: DNS query without a response
suspicious_process: Spawns a suspicious process
unexpected_exception: Unexpected exception
create_rpc_bindings: Creates RPC connection
require_administrator: Requests administrator privileges
interface_enum_connections: IEnumConnections interface querying is detected
creates_suspended_process: Creates suspended process
break_limit_exceeded: Warning: function calls limit has been exceeded
creates_in_programdata: Creates files in the ProgramData directory
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
pe_overlay: PE file contains overlay
open_winlogon_process: Trying to open winlogon process

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