quasar | eb695dfc6736d10a690da446229bbed7c63578e0176bafef8afb31deee7b7858

General

Target

eb695dfc6736d10a690da446229bbed7c63578e0176bafef8afb31deee7b7858.exe
Size

3.1MB
MD5

bf8c567800917f3d6b761f7f90d45ca6
SHA1

d6d5a9a6edcaba021c5e7f88c7c0d29008313c54
SHA256

eb695dfc6736d10a690da446229bbed7c63578e0176bafef8afb31deee7b7858
SHA512

e6e42c0252b7c85cf5f44a715b2d375cbaaf0e04ad3de5ed10e45f6dd1142f5e2ac76fcd276309094219de94abb61f2d80ebe9a75a256c92d7f10f411b9bcccd
SSDEEP

49152:mvht62XlaSFNWPjljiFa2RoUYIjSSe1J/IoGdZTHHB72eh2NT:mvL62XlaSFNWPjljiFXRoUYIjSSl

Score

10^/10

quasar sigma1 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Sigma1

C2

192.168.119.132:4444

Mutex

bd1b4805-d5de-40c6-81b5-f0fbc9ff726b

Attributes

encryption_key
785E5EA57DA0FF65B19DDA61AC5B317ACE290421
install_name
GTA 6.exe
log_directory
Logs
reconnect_delay
3000
startup_key
GTA 6 FREE
subdirectory
SubDir

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3048-1-0x00000000012C0000-0x00000000015E4000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\GTA 6.exe	family_quasar
behavioral1/memory/3000-9-0x0000000000070000-0x0000000000394000-memory.dmp	family_quasar

Detects Windows executables referencing non-Windows User-Agents 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3048-1-0x00000000012C0000-0x00000000015E4000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
C:\Users\Admin\AppData\Roaming\SubDir\GTA 6.exe	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/3000-9-0x0000000000070000-0x0000000000394000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3048-1-0x00000000012C0000-0x00000000015E4000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
C:\Users\Admin\AppData\Roaming\SubDir\GTA 6.exe	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral1/memory/3000-9-0x0000000000070000-0x0000000000394000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects executables containing common artifacts observed in infostealers 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3048-1-0x00000000012C0000-0x00000000015E4000-memory.dmp	INDICATOR_SUSPICIOUS_GENInfoStealer
C:\Users\Admin\AppData\Roaming\SubDir\GTA 6.exe	INDICATOR_SUSPICIOUS_GENInfoStealer
behavioral1/memory/3000-9-0x0000000000070000-0x0000000000394000-memory.dmp	INDICATOR_SUSPICIOUS_GENInfoStealer

Executes dropped EXE 1 IoCs

Processes:

GTA 6.exe

pid process

3000 GTA 6.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

2540 schtasks.exe
2268 schtasks.exe

pid	process
3000	GTA 6.exe

pid	process
2540	schtasks.exe
2268	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

eb695dfc6736d10a690da446229bbed7c63578e0176bafef8afb31deee7b7858.exeGTA 6.exe

description	pid	process
Token: SeDebugPrivilege	3048	eb695dfc6736d10a690da446229bbed7c63578e0176bafef8afb31deee7b7858.exe
Token: SeDebugPrivilege	3000	GTA 6.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

GTA 6.exe

pid process

3000 GTA 6.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

GTA 6.exe

pid process

3000 GTA 6.exe

pid	process
3000	GTA 6.exe

pid	process
3000	GTA 6.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

eb695dfc6736d10a690da446229bbed7c63578e0176bafef8afb31deee7b7858.exeGTA 6.exe

description	pid	process	target process
PID 3048 wrote to memory of 2268	3048	eb695dfc6736d10a690da446229bbed7c63578e0176bafef8afb31deee7b7858.exe	schtasks.exe
PID 3048 wrote to memory of 2268	3048	eb695dfc6736d10a690da446229bbed7c63578e0176bafef8afb31deee7b7858.exe	schtasks.exe
PID 3048 wrote to memory of 2268	3048	eb695dfc6736d10a690da446229bbed7c63578e0176bafef8afb31deee7b7858.exe	schtasks.exe
PID 3048 wrote to memory of 3000	3048	eb695dfc6736d10a690da446229bbed7c63578e0176bafef8afb31deee7b7858.exe	GTA 6.exe
PID 3048 wrote to memory of 3000	3048	eb695dfc6736d10a690da446229bbed7c63578e0176bafef8afb31deee7b7858.exe	GTA 6.exe
PID 3048 wrote to memory of 3000	3048	eb695dfc6736d10a690da446229bbed7c63578e0176bafef8afb31deee7b7858.exe	GTA 6.exe
PID 3000 wrote to memory of 2540	3000	GTA 6.exe	schtasks.exe
PID 3000 wrote to memory of 2540	3000	GTA 6.exe	schtasks.exe
PID 3000 wrote to memory of 2540	3000	GTA 6.exe	schtasks.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\eb695dfc6736d10a690da446229bbed7c63578e0176bafef8afb31deee7b7858.exe
"C:\Users\Admin\AppData\Local\Temp\eb695dfc6736d10a690da446229bbed7c63578e0176bafef8afb31deee7b7858.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3048

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "GTA 6 FREE" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\GTA 6.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:2268

C:\Users\Admin\AppData\Roaming\SubDir\GTA 6.exe
"C:\Users\Admin\AppData\Roaming\SubDir\GTA 6.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3000

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "GTA 6 FREE" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\GTA 6.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:2540

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\GTA 6.exe
Filesize
3.1MB

MD5
bf8c567800917f3d6b761f7f90d45ca6

SHA1
d6d5a9a6edcaba021c5e7f88c7c0d29008313c54

SHA256
eb695dfc6736d10a690da446229bbed7c63578e0176bafef8afb31deee7b7858

SHA512
e6e42c0252b7c85cf5f44a715b2d375cbaaf0e04ad3de5ed10e45f6dd1142f5e2ac76fcd276309094219de94abb61f2d80ebe9a75a256c92d7f10f411b9bcccd

Download Submit
memory/3000-7-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download
memory/3000-9-0x0000000000070000-0x0000000000394000-memory.dmp

Filesize
3.1MB

Download
memory/3000-10-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download
memory/3000-11-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download
memory/3048-0-0x000007FEF5E93000-0x000007FEF5E94000-memory.dmp

Filesize
4KB

Download
memory/3048-1-0x00000000012C0000-0x00000000015E4000-memory.dmp

Filesize
3.1MB

Download
memory/3048-2-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download
memory/3048-8-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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