General
- Target Nlbrute x32.exe
- Size 8.3MB
- Sample240113-fb13aaccbq
- SHA256 ec9ac12934cb6fddd85e526a88f43557d65f4ce109903c98ba7e00b9aad25d76
- MD5 84c9cc0e64f6fd2f88b68e63f56789fa
- SHA1 bc08c0aff7b767909e513a068fe113023d30a2ff
- SHA512 4416e3b1abaababad3cb5432849c47c2b45c46801e20b075216f6c4900209b8d514f97f45fd7000ae7b1e5c99384990684a2bf06430a20d71d17e435963f3cfa
- SSDEEP 196608:9q5yV4MnQaC3KUOyirvxxlPyWPmlkLZNK8A3rbXZwSi+iC:2C4MQNKUoTNPyEnKpqnC
- MD5 SHA1 SHA512 SSDEEP
Behavioral task
behavioral1
Sample
Nlbrute x32.exe
Resource
win7-20231215-en
Malware Config
Extracted
-
quasar
-
1.3.0.0
-
Office04
-
trantienratvip.ddns.net:4782
-
QSR_MUTEX_XG5QWPg5EAuaozWcYa
-
encryption_key
JrQ3qCfRyagmbeFXSbbj
-
install_name
NLbrute.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Targets
-
- Target Nlbrute x32.exe
- Size 8.3MB
- SHA256 ec9ac12934cb6fddd85e526a88f43557d65f4ce109903c98ba7e00b9aad25d76
- MD5 84c9cc0e64f6fd2f88b68e63f56789fa
- SHA1 bc08c0aff7b767909e513a068fe113023d30a2ff
- SHA512 4416e3b1abaababad3cb5432849c47c2b45c46801e20b075216f6c4900209b8d514f97f45fd7000ae7b1e5c99384990684a2bf06430a20d71d17e435963f3cfa
- SSDEEP 196608:9q5yV4MnQaC3KUOyirvxxlPyWPmlkLZNK8A3rbXZwSi+iC:2C4MQNKUoTNPyEnKpqnC
- MD5 SHA1 SHA512 SSDEEP
Detect Neshta payload
Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
Quasar payload
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
Executes dropped EXE
Identifies Wine through registry keys
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
Loads dropped DLL
Modifies system executable filetype association
Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
Suspicious use of NtSetInformationThreadHideFromDebugger
MITRE ATT&CK Enterprise v15
Persistence
Event Triggered Execution
1Change Default File Association
1Scheduled Task/Job
1Privilege Escalation
Event Triggered Execution
1Change Default File Association
1Scheduled Task/Job
1