Managed XDR

c-program-files-mozilla-firefox-firefox.exe (Bazar Loader) — malware analysis report

File info

Filename
c-program-files-mozilla-firefox-firefox.exe
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
664.9 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
5ffa64abc87fc41d269980afec9da4920a87b9ba
SHA256
b53d3462b49a8bb48cdabe306f2fc844290ff0c383f0bc5f4f7b264fb8b5dec7
MD5
efc9c607d5d37c391cc512e48faac3c3

Malwares

  • Bazar Loader

Signatures

Execution

T1047 antivm_wmi: Uses WMI to detect virtual environment
T1047 has_wmi: Executes one or several WMI requests
T1059.003 suspicious_process: Spawns a suspicious process
T1059.003 executes_dropped_cmd: Executes dropped batch files
T1204.002 mimics_extension: Attempts to mimic the file extension

Persistence

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup

Privilege Escalation

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1134 opens_process_token: Opens the access token associated with a process

Defense Evasion

T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1027.002 pe_features: Executable file has PE anomalies (may be false positive)
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
T1036 mimics_extension: Attempts to mimic the file extension

Credential Access

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

Discovery

T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1057 has_wmi: Executes one or several WMI requests
T1082 has_wmi: Executes one or several WMI requests
T1518 locates_browser: Attempts to identify where browsers are installed
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

Command and Control

T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp

Other

creates_exe: Creates executable files in the file system
creates_in_windows: Creates files in the Windows directory
network_bind: Starts servers listening at None
process_crashed: One of the processes has failed
no_graphical_activity: No graphic activity
has_pdb: This executable file has a PDB path
creates_suspended_process: Creates suspended process
message_box: Displays a message
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
pe_overlay: PE file contains overlay
yara_rules: Static rules

Related reports

Managed XDR