quasar | 018f75f18b882044109f250f19da654c0b3bd90430b318fcb03348908a189aae

General

Target

loadervmp.exe
Size

409KB
MD5

14f056491baaed04872533c2d9648d46
SHA1

c48b08d0e9064f2d060f19474bb54cf3c5a25586
SHA256

018f75f18b882044109f250f19da654c0b3bd90430b318fcb03348908a189aae
SHA512

c109b1a9cf40049f8958beab9cff112cb326dd719c56f6dedafda4cf3a64d3faae3912f34cbcc1ee203a0316e40b8f7016624f05a1ad6c93bbaa0bdc9dc79b08
SSDEEP

6144:rMvlpdRJjGq/ldSTTIgiGwo9W0MFMJyb7+Ye0SmxalGcqwL6Ir4H9VI:EpbJjGu/STTIwJWIJgG0jFCRsH9VI

Score

10^/10

quasar seroxen spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

SeroXen

C2

panel-slave.gl.at.ply.gg:57059

panel-slave.gl.at.ply.gg:27892

Mutex

$Sxr-rpL8EItHN3pqIQQVy2

Attributes

encryption_key
ZJpQQkxTrak9Zs9tUOQW
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
SeroXen
subdirectory
SubDir

Signatures

Quasar RAT 3 IoCs
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Processes:

schtasks.exe

flow ioc

7 ip-api.com
20 ip-api.com
4856 schtasks.exe

flow	ioc
7	ip-api.com
20	ip-api.com
4856	schtasks.exe

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2856-1-0x0000000000210000-0x000000000027C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

4964 Client.exe
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

7 ip-api.com
20 ip-api.com
Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

SCHTASKS.exeschtasks.exeschtasks.exe

pid process

4340 SCHTASKS.exe
1016 schtasks.exe
4856 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

loadervmp.exeClient.exe

description pid process

Token: SeDebugPrivilege 2856 loadervmp.exe
Token: SeDebugPrivilege 4964 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

4964 Client.exe

pid	process
4964	Client.exe

flow	ioc
7	ip-api.com
20	ip-api.com

pid	process
4340	SCHTASKS.exe
1016	schtasks.exe
4856	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	2856	loadervmp.exe
Token: SeDebugPrivilege	4964	Client.exe

pid	process
4964	Client.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

loadervmp.exeClient.exe

description	pid	process	target process
PID 2856 wrote to memory of 4856	2856	loadervmp.exe	schtasks.exe
PID 2856 wrote to memory of 4856	2856	loadervmp.exe	schtasks.exe
PID 2856 wrote to memory of 4856	2856	loadervmp.exe	schtasks.exe
PID 2856 wrote to memory of 4964	2856	loadervmp.exe	Client.exe
PID 2856 wrote to memory of 4964	2856	loadervmp.exe	Client.exe
PID 2856 wrote to memory of 4964	2856	loadervmp.exe	Client.exe
PID 2856 wrote to memory of 4340	2856	loadervmp.exe	SCHTASKS.exe
PID 2856 wrote to memory of 4340	2856	loadervmp.exe	SCHTASKS.exe
PID 2856 wrote to memory of 4340	2856	loadervmp.exe	SCHTASKS.exe
PID 4964 wrote to memory of 1016	4964	Client.exe	schtasks.exe
PID 4964 wrote to memory of 1016	4964	Client.exe	schtasks.exe
PID 4964 wrote to memory of 1016	4964	Client.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\loadervmp.exe
"C:\Users\Admin\AppData\Local\Temp\loadervmp.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2856

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\loadervmp.exe" /rl HIGHEST /f
2⤵
- Quasar RAT
- Creates scheduled task(s)
PID:4856

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4964

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:1016

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77loadervmp.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\loadervmp.exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:4340

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
Filesize
409KB

MD5
14f056491baaed04872533c2d9648d46

SHA1
c48b08d0e9064f2d060f19474bb54cf3c5a25586

SHA256
018f75f18b882044109f250f19da654c0b3bd90430b318fcb03348908a189aae

SHA512
c109b1a9cf40049f8958beab9cff112cb326dd719c56f6dedafda4cf3a64d3faae3912f34cbcc1ee203a0316e40b8f7016624f05a1ad6c93bbaa0bdc9dc79b08

Download Submit
memory/2856-6-0x0000000005990000-0x00000000059A2000-memory.dmp

Filesize
72KB

Download
memory/2856-1-0x0000000000210000-0x000000000027C000-memory.dmp

Filesize
432KB

Download
memory/2856-3-0x0000000004CF0000-0x0000000004D82000-memory.dmp

Filesize
584KB

Download
memory/2856-4-0x0000000075090000-0x0000000075840000-memory.dmp

Filesize
7.7MB

Download
memory/2856-5-0x0000000004D90000-0x0000000004DF6000-memory.dmp

Filesize
408KB

Download
memory/2856-0-0x000000007509E000-0x000000007509F000-memory.dmp

Filesize
4KB

Download
memory/2856-7-0x0000000005ED0000-0x0000000005F0C000-memory.dmp

Filesize
240KB

Download
memory/2856-2-0x00000000052A0000-0x0000000005844000-memory.dmp

Filesize
5.6MB

Download
memory/2856-16-0x0000000075090000-0x0000000075840000-memory.dmp

Filesize
7.7MB

Download
memory/4964-14-0x0000000075090000-0x0000000075840000-memory.dmp

Filesize
7.7MB

Download
memory/4964-13-0x0000000075090000-0x0000000075840000-memory.dmp

Filesize
7.7MB

Download
memory/4964-18-0x0000000006A00000-0x0000000006A0A000-memory.dmp

Filesize
40KB

Download
memory/4964-19-0x0000000075090000-0x0000000075840000-memory.dmp

Filesize
7.7MB

Download
memory/4964-20-0x0000000075090000-0x0000000075840000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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