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 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2448-21-0x0000000000400000-0x000000000045E000-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
11	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

Processes:

364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe

description	pid	Process	procid_target
PID 2968 set thread context of 2448	2968	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe	83

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 8 IoCs

Processes:

364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe

pid	Process
2968	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe
2968	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe
2968	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe
2968	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe
2968	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe
2968	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe
2968	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe
2968	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe

pid	Process
2968	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description	pid	Process
Token: SeDebugPrivilege	2448	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid	Process
2448	RegAsm.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe

description	pid	Process	procid_target
PID 2968 wrote to memory of 2448	2968	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe	83
PID 2968 wrote to memory of 2448	2968	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe	83
PID 2968 wrote to memory of 2448	2968	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe	83
PID 2968 wrote to memory of 2448	2968	364bced583c788ce29ea940ae80375ddc554d631bba03a0f2c2773c116ebabb2.exe	83

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:2968
- 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:2448

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

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Downloads

memory/2448-21-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2448-28-0x00000000067B0000-0x00000000067BA000-memory.dmp

Filesize
40KB

Download
memory/2448-26-0x0000000006450000-0x000000000648C000-memory.dmp

Filesize
240KB

Download
memory/2448-25-0x0000000006010000-0x0000000006022000-memory.dmp

Filesize
72KB

Download
memory/2448-24-0x00000000052B0000-0x0000000005316000-memory.dmp

Filesize
408KB

Download
memory/2448-23-0x00000000051E0000-0x0000000005272000-memory.dmp

Filesize
584KB

Download
memory/2448-22-0x0000000005860000-0x0000000005E04000-memory.dmp

Filesize
5.6MB

Download
memory/2968-18-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-14-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-7-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-6-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-5-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-0-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-17-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-16-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-15-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-8-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-13-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-12-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-9-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-10-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-11-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-3-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-4-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-2-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download
memory/2968-1-0x0000000000850000-0x0000000000851000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads