quasar | 9ad36e247204c18b819993885ea7a99fa5b142456a41494a9878cf45cfed2dde

Analysis

max time kernel
7s
max time network
10s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02-06-2024 09:25

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General

Target

Solara.exe
Size

3.1MB
MD5

d80e76b6962401ba306ce0ce9adc43ef
SHA1

e607bd7cdecf84d80b28e67d2836ea882a4f771f
SHA256

9ad36e247204c18b819993885ea7a99fa5b142456a41494a9878cf45cfed2dde
SHA512

85881abbcb6260e9b327b4dcb4db98c24fbc3ca8ea731fb3b1b08c96dabc3745c8fdc778e0dd7f6a8049b24b44c3074b7fd93033dc5f0d7a793755b79ac5f866
SSDEEP

49152:uvRuf2NUaNmwzPWlvdaKM7ZxTwRJishuOar7ToGdXTHHB72eh2NT:uvsf2NUaNmwzPWlvdaB7ZxTwnruP

Score

10^/10

quasar client spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Client

Synapsedoggystyle-51191.portmap.host:51191

192.168.68.107:4782

Mutex

54e60454-c931-4922-b1b7-695913934b39

Attributes

encryption_key
33F77912B4CF70A0AD1E582014B5294301E27672
install_name
AtlasX.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Java Updator
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/2320-1-0x00000000008A0000-0x0000000000BC4000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\AtlasX.exe	family_quasar
behavioral1/memory/2792-9-0x0000000000010000-0x0000000000334000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

Processes:

AtlasX.exe

pid process

2792 AtlasX.exe
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

2940 schtasks.exe
3020 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Solara.exeAtlasX.exe

description pid process

Token: SeDebugPrivilege 2320 Solara.exe
Token: SeDebugPrivilege 2792 AtlasX.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

AtlasX.exe

pid process

2792 AtlasX.exe

pid	process
2792	AtlasX.exe

pid	process
2940	schtasks.exe
3020	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	2320	Solara.exe
Token: SeDebugPrivilege	2792	AtlasX.exe

pid	process
2792	AtlasX.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

Solara.exeAtlasX.exe

description	pid	process	target process
PID 2320 wrote to memory of 2940	2320	Solara.exe	schtasks.exe
PID 2320 wrote to memory of 2940	2320	Solara.exe	schtasks.exe
PID 2320 wrote to memory of 2940	2320	Solara.exe	schtasks.exe
PID 2320 wrote to memory of 2792	2320	Solara.exe	AtlasX.exe
PID 2320 wrote to memory of 2792	2320	Solara.exe	AtlasX.exe
PID 2320 wrote to memory of 2792	2320	Solara.exe	AtlasX.exe
PID 2792 wrote to memory of 3020	2792	AtlasX.exe	schtasks.exe
PID 2792 wrote to memory of 3020	2792	AtlasX.exe	schtasks.exe
PID 2792 wrote to memory of 3020	2792	AtlasX.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\Solara.exe
"C:\Users\Admin\AppData\Local\Temp\Solara.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2320

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Java Updator" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\AtlasX.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:2940

C:\Users\Admin\AppData\Roaming\SubDir\AtlasX.exe
"C:\Users\Admin\AppData\Roaming\SubDir\AtlasX.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2792

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Java Updator" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\AtlasX.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:3020

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

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

MD5
d80e76b6962401ba306ce0ce9adc43ef

SHA1
e607bd7cdecf84d80b28e67d2836ea882a4f771f

SHA256
9ad36e247204c18b819993885ea7a99fa5b142456a41494a9878cf45cfed2dde

SHA512
85881abbcb6260e9b327b4dcb4db98c24fbc3ca8ea731fb3b1b08c96dabc3745c8fdc778e0dd7f6a8049b24b44c3074b7fd93033dc5f0d7a793755b79ac5f866

Download Submit
memory/2320-0-0x000007FEF5223000-0x000007FEF5224000-memory.dmp

Filesize
4KB

Download
memory/2320-1-0x00000000008A0000-0x0000000000BC4000-memory.dmp

Filesize
3.1MB

Download
memory/2320-2-0x000007FEF5220000-0x000007FEF5C0C000-memory.dmp

Filesize
9.9MB

Download
memory/2320-10-0x000007FEF5220000-0x000007FEF5C0C000-memory.dmp

Filesize
9.9MB

Download
memory/2792-8-0x000007FEF5220000-0x000007FEF5C0C000-memory.dmp

Filesize
9.9MB

Download
memory/2792-9-0x0000000000010000-0x0000000000334000-memory.dmp

Filesize
3.1MB

Download
memory/2792-11-0x000007FEF5220000-0x000007FEF5C0C000-memory.dmp

Filesize
9.9MB

Download