quasar | 2f2614d909692ad18d133b6975a74c8b32eaa1fa56b6dd4e4493fa02663b0b47

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
29-05-2024 16:18

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General

Target

Client-built.exe
Size

3.1MB
MD5

18cbd10f11ced1f35a7dc5f62e863d91
SHA1

da4de33e473973786424814e8b7b612e752bf69d
SHA256

2f2614d909692ad18d133b6975a74c8b32eaa1fa56b6dd4e4493fa02663b0b47
SHA512

e75db2e298cf0c5b5e068bd6b4cb6d3a9edfe123a8aed5e6f79c1630feaeb74009482f85fae19ad61fc50b94ce86f3f3784b3a5aceaae3501504a3d2242c27a5
SSDEEP

49152:WvfI22SsaNYfdPBldt698dBcjHt4xNESE7k/iwLoGdZTHHB72eh2NT:Wvw22SsaNYfdPBldt6+dBcjH+xCO

Score

10^/10

quasar roberto spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

roberto

26.241.44.19:4782

Mutex

7427195c-1cdf-4d66-a472-3a404043ceb9

Attributes

encryption_key
D5A706652BB816329FA270B05A84E287A9079658
install_name
roberto.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3208-1-0x0000000000990000-0x0000000000CB4000-memory.dmp	family_quasar
C:\Program Files\SubDir\roberto.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

roberto.exe

pid process

2864 roberto.exe

pid	process
2864	roberto.exe

Drops file in Program Files directory 5 IoCs

Processes:

Client-built.exeroberto.exe

description	ioc	process
File created	C:\Program Files\SubDir\roberto.exe	Client-built.exe
File opened for modification	C:\Program Files\SubDir\roberto.exe	Client-built.exe
File opened for modification	C:\Program Files\SubDir	Client-built.exe
File opened for modification	C:\Program Files\SubDir\roberto.exe	roberto.exe
File opened for modification	C:\Program Files\SubDir	roberto.exe

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

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Client-built.exeroberto.exe

description pid process

Token: SeDebugPrivilege 3208 Client-built.exe
Token: SeDebugPrivilege 2864 roberto.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

roberto.exe

pid process

2864 roberto.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

roberto.exe

pid process

2864 roberto.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

roberto.exe

pid process

2864 roberto.exe

description	pid	process
Token: SeDebugPrivilege	3208	Client-built.exe
Token: SeDebugPrivilege	2864	roberto.exe

pid	process
2864	roberto.exe

pid	process
2864	roberto.exe

pid	process
2864	roberto.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

Client-built.exe

description	pid	process	target process
PID 3208 wrote to memory of 2864	3208	Client-built.exe	roberto.exe
PID 3208 wrote to memory of 2864	3208	Client-built.exe	roberto.exe

C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3208

C:\Program Files\SubDir\roberto.exe
"C:\Program Files\SubDir\roberto.exe"
2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:2864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\SubDir\roberto.exe

Filesize
3.1MB

MD5
18cbd10f11ced1f35a7dc5f62e863d91

SHA1
da4de33e473973786424814e8b7b612e752bf69d

SHA256
2f2614d909692ad18d133b6975a74c8b32eaa1fa56b6dd4e4493fa02663b0b47

SHA512
e75db2e298cf0c5b5e068bd6b4cb6d3a9edfe123a8aed5e6f79c1630feaeb74009482f85fae19ad61fc50b94ce86f3f3784b3a5aceaae3501504a3d2242c27a5

Download Submit
memory/2864-10-0x00007FF91B6D0000-0x00007FF91C191000-memory.dmp

Filesize
10.8MB

Download
memory/2864-11-0x00007FF91B6D0000-0x00007FF91C191000-memory.dmp

Filesize
10.8MB

Download
memory/2864-12-0x000000001BD00000-0x000000001BD50000-memory.dmp

Filesize
320KB

Download
memory/2864-13-0x000000001BE10000-0x000000001BEC2000-memory.dmp

Filesize
712KB

Download
memory/2864-14-0x00007FF91B6D0000-0x00007FF91C191000-memory.dmp

Filesize
10.8MB

Download
memory/3208-0-0x00007FF91B6D3000-0x00007FF91B6D5000-memory.dmp

Filesize
8KB

Download
memory/3208-1-0x0000000000990000-0x0000000000CB4000-memory.dmp

Filesize
3.1MB

Download
memory/3208-2-0x00007FF91B6D0000-0x00007FF91C191000-memory.dmp

Filesize
10.8MB

Download
memory/3208-9-0x00007FF91B6D0000-0x00007FF91C191000-memory.dmp

Filesize
10.8MB

Download