quasar | 364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2

General

Target

364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe
Size

480KB
MD5

e556f54617292b377654a8c2f6016498
SHA1

ff3326d42c53b021fcd38d24f08a2d637623e538
SHA256

364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2
SHA512

3e7e00f9247649f8768d05058388882f249c11ab46610bd1aaf581436d01d55f117d2d61818540a449fe67ea1d3ff49cea62d0bf915dea100a7c77d7656e4c36
SSDEEP

12288:iww6xvH9M3Ir55+JpWQbe6Ef4D+2u+4gnflehWv:inKP9M4r55+JAQGf4D+2tleAv

Score

10^/10

quasar svchost.exe discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

svchost.exe

C2

23.227.174.82:4782

Mutex

QSR_MUTEX_UtaUPinApnyZsQXsVE

Attributes

encryption_key
hn8U0t79xWv7f03kzG79
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/856-33-0x0000000000090000-0x00000000000EE000-memory.dmp	family_quasar
behavioral1/memory/856-41-0x0000000000090000-0x00000000000EE000-memory.dmp	family_quasar
behavioral1/memory/856-38-0x0000000000090000-0x00000000000EE000-memory.dmp	family_quasar
behavioral1/memory/856-34-0x0000000000090000-0x00000000000EE000-memory.dmp	family_quasar

Drops startup file 1 IoCs

Processes:

364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\system.vbs	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.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

Suspicious use of SetThreadContext 1 IoCs

Processes:

364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe

description	pid	Process	procid_target
PID 2584 set thread context of 856	2584	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe	31

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exeRegAsm.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe

pid	Process
2584	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe
2584	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe
2584	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe
2584	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe

Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe

pid	Process
2584	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe
2584	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description	pid	Process
Token: SeDebugPrivilege	856	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid	Process
856	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe

description	pid	Process	procid_target
PID 2584 wrote to memory of 856	2584	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe	31
PID 2584 wrote to memory of 856	2584	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe	31
PID 2584 wrote to memory of 856	2584	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe	31
PID 2584 wrote to memory of 856	2584	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe	31
PID 2584 wrote to memory of 856	2584	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe	31
PID 2584 wrote to memory of 856	2584	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe	31
PID 2584 wrote to memory of 856	2584	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe	31
PID 2584 wrote to memory of 856	2584	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe	31

C:\Users\Admin\AppData\Local\Temp\364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe
"C:\Users\Admin\AppData\Local\Temp\364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2584
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Users\Admin\AppData\Local\Temp\364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/856-33-0x0000000000090000-0x00000000000EE000-memory.dmp

Filesize
376KB

Download
memory/856-34-0x0000000000090000-0x00000000000EE000-memory.dmp

Filesize
376KB

Download
memory/856-38-0x0000000000090000-0x00000000000EE000-memory.dmp

Filesize
376KB

Download
memory/856-41-0x0000000000090000-0x00000000000EE000-memory.dmp

Filesize
376KB

Download
memory/2584-21-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-18-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-1-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-29-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-30-0x0000000000580000-0x0000000000581000-memory.dmp

Filesize
4KB

Download
memory/2584-28-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-27-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-26-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-25-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-24-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-23-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-22-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-0-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-20-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-19-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-2-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-17-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-16-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-15-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-14-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-13-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-12-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-11-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-10-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-9-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-8-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-7-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-3-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-4-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-5-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2584-6-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads