quasar | b397ea71878635c0ca9006cf6bbe06d12c075fcc79e4a42e66c5e0964e686401

General

Target

4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe
Size

3.1MB
MD5

b05ef4b68b309f9aefa705d3c0ab50e1
SHA1

ffbf50f019be8426868b616960713fa4f596905c
SHA256

4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a
SHA512

e77b2fd9d92fd286cedd1f7a70767968a9048b02206493b43aaac11b73a29fbc8819a28f2fb7b765c87cfbf734fad0fda40483bb495a2f177833c31a5ce9294b
SSDEEP

49152:2vPI22SsaNYfdPBldt698dBcjHKyRJ68bR3LoGdJJTHHB72eh2NT:2vA22SsaNYfdPBldt6+dBcjHKyRJ6GZ

Score

10^/10

quasar 1st spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

1st

C2

94.156.8.44:4787

94.156.8.44:6606

Mutex

8c89b218-c255-48cb-be3d-4ac14fe780fa

Attributes

encryption_key
4785083178D87EB2AD342D8849D0672AE29F1744
install_name
softgui.exe
log_directory
Logs
reconnect_delay
3000
startup_key
softgui.svc
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/5660-0-0x00000000002D0000-0x00000000005F4000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\softgui.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

softgui.exe

pid process

1492 softgui.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

452 schtasks.exe
1812 schtasks.exe

pid	process
1492	softgui.exe

pid	process
452	schtasks.exe
1812	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exesoftgui.exe

description	pid	process
Token: SeDebugPrivilege	5660	4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe
Token: SeDebugPrivilege	1492	softgui.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

softgui.exe

pid process

1492 softgui.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

softgui.exe

pid process

1492 softgui.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

softgui.exe

pid process

1492 softgui.exe

pid	process
1492	softgui.exe

pid	process
1492	softgui.exe

pid	process
1492	softgui.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exesoftgui.exe

description	pid	process	target process
PID 5660 wrote to memory of 452	5660	4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe	schtasks.exe
PID 5660 wrote to memory of 452	5660	4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe	schtasks.exe
PID 5660 wrote to memory of 1492	5660	4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe	softgui.exe
PID 5660 wrote to memory of 1492	5660	4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe	softgui.exe
PID 1492 wrote to memory of 1812	1492	softgui.exe	schtasks.exe
PID 1492 wrote to memory of 1812	1492	softgui.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\4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe
"C:\Users\Admin\AppData\Local\Temp\4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5660

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "softgui.svc" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\softgui.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:452

C:\Users\Admin\AppData\Roaming\SubDir\softgui.exe
"C:\Users\Admin\AppData\Roaming\SubDir\softgui.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:1492

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "softgui.svc" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\softgui.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:1812

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

MD5
b05ef4b68b309f9aefa705d3c0ab50e1

SHA1
ffbf50f019be8426868b616960713fa4f596905c

SHA256
4b49068a198e8dcc90d1ae5d623c2cf669c93e067573b26c880b56b14e550e3a

SHA512
e77b2fd9d92fd286cedd1f7a70767968a9048b02206493b43aaac11b73a29fbc8819a28f2fb7b765c87cfbf734fad0fda40483bb495a2f177833c31a5ce9294b

Download Submit
memory/1492-9-0x00007FFCCDD40000-0x00007FFCCE801000-memory.dmp

Filesize
10.8MB

Download
memory/1492-11-0x000000001B050000-0x000000001B060000-memory.dmp

Filesize
64KB

Download
memory/1492-12-0x000000001BC70000-0x000000001BCC0000-memory.dmp

Filesize
320KB

Download
memory/1492-13-0x000000001BD80000-0x000000001BE32000-memory.dmp

Filesize
712KB

Download
memory/1492-14-0x00007FFCCDD40000-0x00007FFCCE801000-memory.dmp

Filesize
10.8MB

Download
memory/1492-15-0x000000001B050000-0x000000001B060000-memory.dmp

Filesize
64KB

Download
memory/5660-0-0x00000000002D0000-0x00000000005F4000-memory.dmp

Filesize
3.1MB

Download
memory/5660-1-0x00007FFCCDD40000-0x00007FFCCE801000-memory.dmp

Filesize
10.8MB

Download
memory/5660-2-0x000000001B650000-0x000000001B660000-memory.dmp

Filesize
64KB

Download
memory/5660-10-0x00007FFCCDD40000-0x00007FFCCE801000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads