General
- Target Filezo 6.0.18 + CRACK.exe
- Size 90.0MB
- Sample260715-xvfdcsf17x
- SHA256 439b73b50c9e5c161b070a4eafa6a56ddb4ea6daf155b8dc06105028a7d04fd2
- MD5 e98cbcc77f97b1f3c985dfe1e8f88831
- SHA1 3ef14a32a79cba1fda6ad3ce4ea066d456628f0d
- SHA512 ab49f1c650e11db7b466b02ef336fb852cb331e1411951502443e5b93c8856b81b283882b68edcd954c8c4b033a72c1fa02036c5ca6bfb91b4e23debfd3851b2
- SSDEEP 1572864:vnhHO2j6mvwauwP65Wq19Qidwnn21tNIS0PiAnvsftepwJj7SaXraXBt+a84id44:vnhDvkwP65Wq1+idAn21tLiklepwJiS9
- TLSH T1E528338CEB90C5FAD22644355D8B4E01EDB8FCA14B55D296334C76972E31382FE2D3A9
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
Filezo 6.0.18 + CRACK.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
Filezo 6.0.18 + CRACK.exe
Resource
win10ltsc2021-20260513-en
Behavioral task
behavioral3
Sample
Filezo 6.0.18 + CRACK.exe
Resource
win11-20260513-en
Malware Config
Extracted
-
quasar
-
1.3.0.0
-
Filezo 6.0.18
-
stopman.ooguy.com:2002
-
QSR_MUTEX_Pn3vK12dAfUdfWUHbL
-
encryption_key
tMNJA2RQy3CbPm9vBHFT
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Targets
-
- Target Filezo 6.0.18 + CRACK.exe
- Size 90.0MB
- SHA256 439b73b50c9e5c161b070a4eafa6a56ddb4ea6daf155b8dc06105028a7d04fd2
- MD5 e98cbcc77f97b1f3c985dfe1e8f88831
- SHA1 3ef14a32a79cba1fda6ad3ce4ea066d456628f0d
- SHA512 ab49f1c650e11db7b466b02ef336fb852cb331e1411951502443e5b93c8856b81b283882b68edcd954c8c4b033a72c1fa02036c5ca6bfb91b4e23debfd3851b2
- SSDEEP 1572864:vnhHO2j6mvwauwP65Wq19Qidwnn21tNIS0PiAnvsftepwJj7SaXraXBt+a84id44:vnhDvkwP65Wq1+idAn21tLiklepwJiS9
- TLSH T1E528338CEB90C5FAD22644355D8B4E01EDB8FCA14B55D296334C76972E31382FE2D3A9
- MD5 SHA1 SHA512 SSDEEP TLSH
-
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.
-
Drops startup file
-
Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
-
Executes dropped EXE
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Loads dropped DLL
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Checks whether UAC is enabled
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
-
Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
-
Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
-
Drops file in System32 directory
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Suspicious use of SetThreadContext
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Browser Extensions
1Event Triggered Execution
1Component Object Model Hijacking
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Component Object Model Hijacking
1Defense Evasion
Modify Registry
2Pre-OS Boot
1Bootkit
1Virtualization/Sandbox Evasion
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1