quasar | c4f4b783e9b152a00d5cac8b82d2ae0c74fa848aaa4a524dc5cb81b1576aaab5

General

Target

uni/Uni - Copy (6).exe
Size

409KB
MD5

b70fdac25a99501e3cae11f1b775249e
SHA1

3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71
SHA256

51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246
SHA512

43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44
SSDEEP

12288:gpbJjGut6AoE3hVVdFaC/eZPTMTDlpgfJCKuMsVs:oVaurMLcDlpRKai

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
Lme7VBS3l58VwLM69PNM
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

34 ip-api.com
2852 schtasks.exe
7 ip-api.com

flow	ioc
34	ip-api.com
2852	schtasks.exe
7	ip-api.com

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral10/memory/6084-1-0x0000000000CF0000-0x0000000000D5C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 2 IoCs

Processes:

Client.exel7thk6p9jcNZ.exe

pid process

756 Client.exe
5732 l7thk6p9jcNZ.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
34 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

2852 schtasks.exe
5132 SCHTASKS.exe
2148 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Uni - Copy (6).exeClient.exe

description pid process

Token: SeDebugPrivilege 6084 Uni - Copy (6).exe
Token: SeDebugPrivilege 756 Client.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

Client.exel7thk6p9jcNZ.exe

pid process

756 Client.exe
5732 l7thk6p9jcNZ.exe

pid	process
756	Client.exe
5732	l7thk6p9jcNZ.exe

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

pid	process
2852	schtasks.exe
5132	SCHTASKS.exe
2148	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	6084	Uni - Copy (6).exe
Token: SeDebugPrivilege	756	Client.exe

pid	process
756	Client.exe
5732	l7thk6p9jcNZ.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Uni - Copy (6).exeClient.exe

description	pid	process	target process
PID 6084 wrote to memory of 2852	6084	Uni - Copy (6).exe	schtasks.exe
PID 6084 wrote to memory of 2852	6084	Uni - Copy (6).exe	schtasks.exe
PID 6084 wrote to memory of 2852	6084	Uni - Copy (6).exe	schtasks.exe
PID 6084 wrote to memory of 756	6084	Uni - Copy (6).exe	Client.exe
PID 6084 wrote to memory of 756	6084	Uni - Copy (6).exe	Client.exe
PID 6084 wrote to memory of 756	6084	Uni - Copy (6).exe	Client.exe
PID 6084 wrote to memory of 5132	6084	Uni - Copy (6).exe	SCHTASKS.exe
PID 6084 wrote to memory of 5132	6084	Uni - Copy (6).exe	SCHTASKS.exe
PID 6084 wrote to memory of 5132	6084	Uni - Copy (6).exe	SCHTASKS.exe
PID 756 wrote to memory of 2148	756	Client.exe	schtasks.exe
PID 756 wrote to memory of 2148	756	Client.exe	schtasks.exe
PID 756 wrote to memory of 2148	756	Client.exe	schtasks.exe
PID 756 wrote to memory of 5732	756	Client.exe	l7thk6p9jcNZ.exe
PID 756 wrote to memory of 5732	756	Client.exe	l7thk6p9jcNZ.exe
PID 756 wrote to memory of 5732	756	Client.exe	l7thk6p9jcNZ.exe

C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (6).exe
"C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (6).exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:6084

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (6).exe" /rl HIGHEST /f
2⤵
- Quasar RAT
- Creates scheduled task(s)
PID:2852

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:756

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:2148

C:\Users\Admin\AppData\Local\Temp\l7thk6p9jcNZ.exe
"C:\Users\Admin\AppData\Local\Temp\l7thk6p9jcNZ.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:5732

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Uni - Copy (6).exe" /tr "'C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (6).exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:5132

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x394 0x3d4
1⤵
PID:2180

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\l7thk6p9jcNZ.exe
Filesize
277KB

MD5
dac0c5b2380cbdd93b46763427c9f8df

SHA1
038089e1a0ac8375be797fc3ce7ae719abc72834

SHA256
d02538788fb57f568ece292f5fc20e9775c86d504de67f57e22534f84adc73c6

SHA512
05cc1f6bf25a6545a06c735ae7a4a7fc25489bdb9fbc8d5797be623982662c4a93cba2d20bfe14313ef1548eaaa691e55fabdd8e3d3e45de9ab42dc62f9a7023

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

MD5
b70fdac25a99501e3cae11f1b775249e

SHA1
3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71

SHA256
51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246

SHA512
43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44

Download Submit
memory/756-18-0x0000000006680000-0x000000000668A000-memory.dmp

Filesize
40KB

Download
memory/756-13-0x0000000074900000-0x00000000750B0000-memory.dmp

Filesize
7.7MB

Download
memory/756-20-0x0000000074900000-0x00000000750B0000-memory.dmp

Filesize
7.7MB

Download
memory/756-19-0x0000000074900000-0x00000000750B0000-memory.dmp

Filesize
7.7MB

Download
memory/756-14-0x0000000074900000-0x00000000750B0000-memory.dmp

Filesize
7.7MB

Download
memory/6084-6-0x00000000065C0000-0x00000000065D2000-memory.dmp

Filesize
72KB

Download
memory/6084-2-0x0000000005C90000-0x0000000006234000-memory.dmp

Filesize
5.6MB

Download
memory/6084-7-0x0000000006B00000-0x0000000006B3C000-memory.dmp

Filesize
240KB

Download
memory/6084-3-0x00000000057A0000-0x0000000005832000-memory.dmp

Filesize
584KB

Download
memory/6084-16-0x0000000074900000-0x00000000750B0000-memory.dmp

Filesize
7.7MB

Download
memory/6084-0-0x000000007490E000-0x000000007490F000-memory.dmp

Filesize
4KB

Download
memory/6084-5-0x0000000005840000-0x00000000058A6000-memory.dmp

Filesize
408KB

Download
memory/6084-4-0x0000000074900000-0x00000000750B0000-memory.dmp

Filesize
7.7MB

Download
memory/6084-1-0x0000000000CF0000-0x0000000000D5C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads