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/2880-1-0x0000000000E60000-0x0000000000ECC000-memory.dmp	family_quasar
\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar
behavioral1/memory/2532-11-0x0000000000C10000-0x0000000000C7C000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

Client.exeClient.exe

pid process

2532 Client.exe
2964 Client.exe
Loads dropped DLL 7 IoCs

Processes:

loadervmp.exeWerFault.execmd.exe

pid process

2880 loadervmp.exe
3068 WerFault.exe
3068 WerFault.exe
3068 WerFault.exe
3068 WerFault.exe
3068 WerFault.exe
2460 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

3068 2532 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

2188 schtasks.exe
2736 schtasks.exe
2668 SCHTASKS.exe
836 SCHTASKS.exe
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

2732 PING.EXE
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

loadervmp.exeClient.exeClient.exe

description pid process

Token: SeDebugPrivilege 2880 loadervmp.exe
Token: SeDebugPrivilege 2532 Client.exe
Token: SeDebugPrivilege 2964 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

2532 Client.exe

pid	process
2532	Client.exe
2964	Client.exe

pid	process
2880	loadervmp.exe
3068	WerFault.exe
3068	WerFault.exe
3068	WerFault.exe
3068	WerFault.exe
3068	WerFault.exe
2460	cmd.exe

flow	ioc
2	ip-api.com

pid	pid_target	process	target process
3068	2532	WerFault.exe	Client.exe

pid	process
2188	schtasks.exe
2736	schtasks.exe
2668	SCHTASKS.exe
836	SCHTASKS.exe

pid	process
2732	PING.EXE

description	pid	process
Token: SeDebugPrivilege	2880	loadervmp.exe
Token: SeDebugPrivilege	2532	Client.exe
Token: SeDebugPrivilege	2964	Client.exe

pid	process
2532	Client.exe

Suspicious use of WriteProcessMemory 46 IoCs

Processes:

loadervmp.exeClient.execmd.exeClient.exe

description	pid	process	target process
PID 2880 wrote to memory of 2188	2880	loadervmp.exe	schtasks.exe
PID 2880 wrote to memory of 2188	2880	loadervmp.exe	schtasks.exe
PID 2880 wrote to memory of 2188	2880	loadervmp.exe	schtasks.exe
PID 2880 wrote to memory of 2188	2880	loadervmp.exe	schtasks.exe
PID 2880 wrote to memory of 2532	2880	loadervmp.exe	Client.exe
PID 2880 wrote to memory of 2532	2880	loadervmp.exe	Client.exe
PID 2880 wrote to memory of 2532	2880	loadervmp.exe	Client.exe
PID 2880 wrote to memory of 2532	2880	loadervmp.exe	Client.exe
PID 2880 wrote to memory of 2532	2880	loadervmp.exe	Client.exe
PID 2880 wrote to memory of 2532	2880	loadervmp.exe	Client.exe
PID 2880 wrote to memory of 2532	2880	loadervmp.exe	Client.exe
PID 2532 wrote to memory of 2736	2532	Client.exe	schtasks.exe
PID 2532 wrote to memory of 2736	2532	Client.exe	schtasks.exe
PID 2532 wrote to memory of 2736	2532	Client.exe	schtasks.exe
PID 2532 wrote to memory of 2736	2532	Client.exe	schtasks.exe
PID 2880 wrote to memory of 2668	2880	loadervmp.exe	SCHTASKS.exe
PID 2880 wrote to memory of 2668	2880	loadervmp.exe	SCHTASKS.exe
PID 2880 wrote to memory of 2668	2880	loadervmp.exe	SCHTASKS.exe
PID 2880 wrote to memory of 2668	2880	loadervmp.exe	SCHTASKS.exe
PID 2532 wrote to memory of 2460	2532	Client.exe	cmd.exe
PID 2532 wrote to memory of 2460	2532	Client.exe	cmd.exe
PID 2532 wrote to memory of 2460	2532	Client.exe	cmd.exe
PID 2532 wrote to memory of 2460	2532	Client.exe	cmd.exe
PID 2460 wrote to memory of 2980	2460	cmd.exe	chcp.com
PID 2460 wrote to memory of 2980	2460	cmd.exe	chcp.com
PID 2460 wrote to memory of 2980	2460	cmd.exe	chcp.com
PID 2460 wrote to memory of 2980	2460	cmd.exe	chcp.com
PID 2532 wrote to memory of 3068	2532	Client.exe	WerFault.exe
PID 2532 wrote to memory of 3068	2532	Client.exe	WerFault.exe
PID 2532 wrote to memory of 3068	2532	Client.exe	WerFault.exe
PID 2532 wrote to memory of 3068	2532	Client.exe	WerFault.exe
PID 2460 wrote to memory of 2732	2460	cmd.exe	PING.EXE
PID 2460 wrote to memory of 2732	2460	cmd.exe	PING.EXE
PID 2460 wrote to memory of 2732	2460	cmd.exe	PING.EXE
PID 2460 wrote to memory of 2732	2460	cmd.exe	PING.EXE
PID 2460 wrote to memory of 2964	2460	cmd.exe	Client.exe
PID 2460 wrote to memory of 2964	2460	cmd.exe	Client.exe
PID 2460 wrote to memory of 2964	2460	cmd.exe	Client.exe
PID 2460 wrote to memory of 2964	2460	cmd.exe	Client.exe
PID 2460 wrote to memory of 2964	2460	cmd.exe	Client.exe
PID 2460 wrote to memory of 2964	2460	cmd.exe	Client.exe
PID 2460 wrote to memory of 2964	2460	cmd.exe	Client.exe
PID 2964 wrote to memory of 836	2964	Client.exe	SCHTASKS.exe
PID 2964 wrote to memory of 836	2964	Client.exe	SCHTASKS.exe
PID 2964 wrote to memory of 836	2964	Client.exe	SCHTASKS.exe
PID 2964 wrote to memory of 836	2964	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:2880

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:2188

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:2532

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:2736

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\nBtcJVScEsnd.bat" "
3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2460

C:\Windows\SysWOW64\chcp.com
chcp 65001
4⤵
PID:2980

C:\Windows\SysWOW64\PING.EXE
ping -n 10 localhost
4⤵
- Runs ping.exe
PID:2732

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:2964

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:836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2532 -s 1456
3⤵
- Loads dropped DLL
- Program crash
PID:3068

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:2668

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

Remote System Discovery

1

T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\nBtcJVScEsnd.bat
Filesize
207B

MD5
5d396494f111b54465b14f7f18325064

SHA1
af00935f0090fa2066ccb617ee6e759467f26031

SHA256
86565e1693cbf76e2cb2c9319cc122a851221988d247a76700c1430c1f94624e

SHA512
bb80a02edb1411f2ec5b4a0ded6673308314258a884914938660e03f9b2d548b5320f5845abd9882b5a0ffd89cf9bec445c59979e6d8b6860908a534e7378b69

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

MD5
14f056491baaed04872533c2d9648d46

SHA1
c48b08d0e9064f2d060f19474bb54cf3c5a25586

SHA256
018f75f18b882044109f250f19da654c0b3bd90430b318fcb03348908a189aae

SHA512
c109b1a9cf40049f8958beab9cff112cb326dd719c56f6dedafda4cf3a64d3faae3912f34cbcc1ee203a0316e40b8f7016624f05a1ad6c93bbaa0bdc9dc79b08

Download Submit
memory/2532-10-0x0000000074470000-0x0000000074B5E000-memory.dmp

Filesize
6.9MB

Download
memory/2532-11-0x0000000000C10000-0x0000000000C7C000-memory.dmp

Filesize
432KB

Download
memory/2532-12-0x0000000074470000-0x0000000074B5E000-memory.dmp

Filesize
6.9MB

Download
memory/2532-31-0x0000000074470000-0x0000000074B5E000-memory.dmp

Filesize
6.9MB

Download
memory/2880-0-0x000000007447E000-0x000000007447F000-memory.dmp

Filesize
4KB

Download
memory/2880-1-0x0000000000E60000-0x0000000000ECC000-memory.dmp

Filesize
432KB

Download
memory/2880-2-0x0000000074470000-0x0000000074B5E000-memory.dmp

Filesize
6.9MB

Download
memory/2880-14-0x0000000074470000-0x0000000074B5E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads