quasar | 85d92e5e062b2e847e0334ed5afef5e7ff708e87ba6f25e31be00a0570827b98

Analysis

max time kernel
141s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
18/05/2024, 22:19

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
solara.exe
Size 3.1MB
Sample240518-18krsabc65
SHA256 85d92e5e062b2e847e0334ed5afef5e7ff708e87ba6f25e31be00a0570827b98
MD5 9c9e1009cf33ab0f1652ccd8a5f845c1
SHA1 42d9282a9443175c4f64a7fce83fb39878aa6600
SHA512 89f3bd5700024260e82369e97c43a6a82a10bc5a7330f0b73dd3c53037e4aa8f9e535727feb58df2e8c54ec48ac9a397dadc49cf1f7cfeaffa00134714e80118
SSDEEP 49152:SvtI22SsaNYfdPBldt698dBcjHDPRJ6/bR3LoGdSTHHB72eh2NT:Svm22SsaNYfdPBldt6+dBcjHDPRJ6R
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quasar consis spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

consis

192.168.0.75:4783

Mutex

7c58e842-ae6e-4f79-bca8-c40fc05002b5

Attributes

encryption_key
3F4E1662FE86BE65EF2C4E1F0FEFAABC94765DDB
install_name
Sub-1.exe
log_directory
Logs
reconnect_delay
1500
startup_key
Quasar Client Startup
subdirectory
Windows

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/1392-1-0x0000000000350000-0x0000000000674000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023435-7.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
4368	Sub-1.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

pid	Process
3144	schtasks.exe
4160	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1392	solara.exe
Token: SeDebugPrivilege	4368	Sub-1.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4368	Sub-1.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4368	Sub-1.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4368	Sub-1.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1392 wrote to memory of 3144	1392	solara.exe	87
PID 1392 wrote to memory of 3144	1392	solara.exe	87
PID 1392 wrote to memory of 4368	1392	solara.exe	89
PID 1392 wrote to memory of 4368	1392	solara.exe	89
PID 4368 wrote to memory of 4160	4368	Sub-1.exe	90
PID 4368 wrote to memory of 4160	4368	Sub-1.exe	90

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\solara.exe
"C:\Users\Admin\AppData\Local\Temp\solara.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1392
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\Sub-1.exe" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:3144
- C:\Users\Admin\AppData\Roaming\Windows\Sub-1.exe
  "C:\Users\Admin\AppData\Roaming\Windows\Sub-1.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4368
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\Sub-1.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:4160

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

Sub-1.exe

Path C:\Users\Admin\AppData\Roaming\Windows\Sub-1.exe
Size 3.1MB
SHA256 85d92e5e062b2e847e0334ed5afef5e7ff708e87ba6f25e31be00a0570827b98
MD5 9c9e1009cf33ab0f1652ccd8a5f845c1
SHA1 42d9282a9443175c4f64a7fce83fb39878aa6600
SHA512 89f3bd5700024260e82369e97c43a6a82a10bc5a7330f0b73dd3c53037e4aa8f9e535727feb58df2e8c54ec48ac9a397dadc49cf1f7cfeaffa00134714e80118
SSDEEP 49152:SvtI22SsaNYfdPBldt698dBcjHDPRJ6/bR3LoGdSTHHB72eh2NT:Svm22SsaNYfdPBldt6+dBcjHDPRJ6R
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1392-0-0x00007FFC279D3000-0x00007FFC279D5000-memory.dmp

Download

memory/1392-1-0x0000000000350000-0x0000000000674000-memory.dmp

Download

memory/1392-2-0x00007FFC279D0000-0x00007FFC28491000-memory.dmp

Download

memory/1392-9-0x00007FFC279D0000-0x00007FFC28491000-memory.dmp

Download

memory/4368-10-0x00007FFC279D0000-0x00007FFC28491000-memory.dmp

Download

memory/4368-11-0x00007FFC279D0000-0x00007FFC28491000-memory.dmp

Download

memory/4368-12-0x000000001C140000-0x000000001C190000-memory.dmp

Download

memory/4368-13-0x000000001C250000-0x000000001C302000-memory.dmp

Download

memory/4368-14-0x00007FFC279D0000-0x00007FFC28491000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads