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

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3024-1-0x0000000000A60000-0x0000000000ACC000-memory.dmp	family_quasar
\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar
behavioral1/memory/2672-10-0x0000000000130000-0x000000000019C000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

Client.exeClient.exe

pid process

2672 Client.exe
2944 Client.exe
Loads dropped DLL 7 IoCs

Processes:

loadervmp.exeWerFault.execmd.exe

pid process

3024 loadervmp.exe
1408 WerFault.exe
1408 WerFault.exe
1408 WerFault.exe
1408 WerFault.exe
1408 WerFault.exe
2572 cmd.exe
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

2 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1408 2672 WerFault.exe Client.exe
Creates scheduled task(s) 1 TTPs 4 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exeSCHTASKS.exeSCHTASKS.exe

pid process

2556 schtasks.exe
2488 schtasks.exe
2624 SCHTASKS.exe
2628 SCHTASKS.exe
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

2364 PING.EXE
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

loadervmp.exeClient.exeClient.exe

description pid process

Token: SeDebugPrivilege 3024 loadervmp.exe
Token: SeDebugPrivilege 2672 Client.exe
Token: SeDebugPrivilege 2944 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

2672 Client.exe

pid	process
2672	Client.exe
2944	Client.exe

pid	process
3024	loadervmp.exe
1408	WerFault.exe
1408	WerFault.exe
1408	WerFault.exe
1408	WerFault.exe
1408	WerFault.exe
2572	cmd.exe

flow	ioc
2	ip-api.com

pid	pid_target	process	target process
1408	2672	WerFault.exe	Client.exe

pid	process
2556	schtasks.exe
2488	schtasks.exe
2624	SCHTASKS.exe
2628	SCHTASKS.exe

pid	process
2364	PING.EXE

description	pid	process
Token: SeDebugPrivilege	3024	loadervmp.exe
Token: SeDebugPrivilege	2672	Client.exe
Token: SeDebugPrivilege	2944	Client.exe

pid	process
2672	Client.exe

Suspicious use of WriteProcessMemory 46 IoCs

Processes:

loadervmp.exeClient.execmd.exeClient.exe

description	pid	process	target process
PID 3024 wrote to memory of 2556	3024	loadervmp.exe	schtasks.exe
PID 3024 wrote to memory of 2556	3024	loadervmp.exe	schtasks.exe
PID 3024 wrote to memory of 2556	3024	loadervmp.exe	schtasks.exe
PID 3024 wrote to memory of 2556	3024	loadervmp.exe	schtasks.exe
PID 3024 wrote to memory of 2672	3024	loadervmp.exe	Client.exe
PID 3024 wrote to memory of 2672	3024	loadervmp.exe	Client.exe
PID 3024 wrote to memory of 2672	3024	loadervmp.exe	Client.exe
PID 3024 wrote to memory of 2672	3024	loadervmp.exe	Client.exe
PID 3024 wrote to memory of 2672	3024	loadervmp.exe	Client.exe
PID 3024 wrote to memory of 2672	3024	loadervmp.exe	Client.exe
PID 3024 wrote to memory of 2672	3024	loadervmp.exe	Client.exe
PID 2672 wrote to memory of 2488	2672	Client.exe	schtasks.exe
PID 2672 wrote to memory of 2488	2672	Client.exe	schtasks.exe
PID 2672 wrote to memory of 2488	2672	Client.exe	schtasks.exe
PID 2672 wrote to memory of 2488	2672	Client.exe	schtasks.exe
PID 3024 wrote to memory of 2624	3024	loadervmp.exe	SCHTASKS.exe
PID 3024 wrote to memory of 2624	3024	loadervmp.exe	SCHTASKS.exe
PID 3024 wrote to memory of 2624	3024	loadervmp.exe	SCHTASKS.exe
PID 3024 wrote to memory of 2624	3024	loadervmp.exe	SCHTASKS.exe
PID 2672 wrote to memory of 2572	2672	Client.exe	cmd.exe
PID 2672 wrote to memory of 2572	2672	Client.exe	cmd.exe
PID 2672 wrote to memory of 2572	2672	Client.exe	cmd.exe
PID 2672 wrote to memory of 2572	2672	Client.exe	cmd.exe
PID 2572 wrote to memory of 3008	2572	cmd.exe	chcp.com
PID 2572 wrote to memory of 3008	2572	cmd.exe	chcp.com
PID 2572 wrote to memory of 3008	2572	cmd.exe	chcp.com
PID 2572 wrote to memory of 3008	2572	cmd.exe	chcp.com
PID 2672 wrote to memory of 1408	2672	Client.exe	WerFault.exe
PID 2672 wrote to memory of 1408	2672	Client.exe	WerFault.exe
PID 2672 wrote to memory of 1408	2672	Client.exe	WerFault.exe
PID 2672 wrote to memory of 1408	2672	Client.exe	WerFault.exe
PID 2572 wrote to memory of 2364	2572	cmd.exe	PING.EXE
PID 2572 wrote to memory of 2364	2572	cmd.exe	PING.EXE
PID 2572 wrote to memory of 2364	2572	cmd.exe	PING.EXE
PID 2572 wrote to memory of 2364	2572	cmd.exe	PING.EXE
PID 2572 wrote to memory of 2944	2572	cmd.exe	Client.exe
PID 2572 wrote to memory of 2944	2572	cmd.exe	Client.exe
PID 2572 wrote to memory of 2944	2572	cmd.exe	Client.exe
PID 2572 wrote to memory of 2944	2572	cmd.exe	Client.exe
PID 2572 wrote to memory of 2944	2572	cmd.exe	Client.exe
PID 2572 wrote to memory of 2944	2572	cmd.exe	Client.exe
PID 2572 wrote to memory of 2944	2572	cmd.exe	Client.exe
PID 2944 wrote to memory of 2628	2944	Client.exe	SCHTASKS.exe
PID 2944 wrote to memory of 2628	2944	Client.exe	SCHTASKS.exe
PID 2944 wrote to memory of 2628	2944	Client.exe	SCHTASKS.exe
PID 2944 wrote to memory of 2628	2944	Client.exe	SCHTASKS.exe

C:\Users\Admin\AppData\Local\Temp\loadervmp.exe
"C:\Users\Admin\AppData\Local\Temp\loadervmp.exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3024

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\loadervmp.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:2556

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:2672

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:2488

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\L4vqGt6FFI8V.bat" "
3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2572

C:\Windows\SysWOW64\chcp.com
chcp 65001
4⤵
PID:3008

C:\Windows\SysWOW64\PING.EXE
ping -n 10 localhost
4⤵
- Runs ping.exe
PID:2364

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2944

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Client.exe" /tr "'C:\Users\Admin\AppData\Roaming\SubDir\Client.exe'" /sc onlogon /rl HIGHEST
5⤵
- Creates scheduled task(s)
PID:2628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2672 -s 1448
3⤵
- Loads dropped DLL
- Program crash
PID:1408

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:2624

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

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\L4vqGt6FFI8V.bat

Filesize
207B

MD5
60cc010e0c03a276b0b5efda3d2c0c22

SHA1
6f4545ca30d4f6cf9f7ed9377e71f53344da3cf0

SHA256
4060b45ef1896748fbdbf874d1b5466180fc407e7e75576643e9beeeead20578

SHA512
884819d492dad58812bf9523fc0441da12d17cec298598f3372fda4af59a845905dbe99b78aae2ea4807a3ed093fd750fdae2cb81a46f4ed78d070485e09d7dd

Download Submit
\Users\Admin\AppData\Roaming\SubDir\Client.exe

Filesize
409KB

MD5
14f056491baaed04872533c2d9648d46

SHA1
c48b08d0e9064f2d060f19474bb54cf3c5a25586

SHA256
018f75f18b882044109f250f19da654c0b3bd90430b318fcb03348908a189aae

SHA512
c109b1a9cf40049f8958beab9cff112cb326dd719c56f6dedafda4cf3a64d3faae3912f34cbcc1ee203a0316e40b8f7016624f05a1ad6c93bbaa0bdc9dc79b08

Download Submit
memory/2672-10-0x0000000000130000-0x000000000019C000-memory.dmp

Filesize
432KB

Download
memory/2672-11-0x0000000074BB0000-0x000000007529E000-memory.dmp

Filesize
6.9MB

Download
memory/2672-12-0x0000000074BB0000-0x000000007529E000-memory.dmp

Filesize
6.9MB

Download
memory/2672-31-0x0000000074BB0000-0x000000007529E000-memory.dmp

Filesize
6.9MB

Download
memory/3024-0-0x0000000074BBE000-0x0000000074BBF000-memory.dmp

Filesize
4KB

Download
memory/3024-1-0x0000000000A60000-0x0000000000ACC000-memory.dmp

Filesize
432KB

Download
memory/3024-2-0x0000000074BB0000-0x000000007529E000-memory.dmp

Filesize
6.9MB

Download
memory/3024-14-0x0000000074BB0000-0x000000007529E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads