quasar | 6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82

General

Target

6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe
Size

480KB
MD5

23f57c49b1d789e13d82223fbd441b30
SHA1

2c3aab73b66b19bc34b82f6cfb9e61f789152be5
SHA256

6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82
SHA512

379566c8a8f9290996d3c4ca241923032eb040434e07970b477cc8e5be3365c63a827ea37d4c2fe8ad1c717ae3a4bb1bdb7c37d5e9fb16766202d86fb5231e89
SSDEEP

12288:iww6xvH9M3Ir55+JpWQbe6Ef4D+2u+4gnflehWH:inKP9M4r55+JAQGf4D+2tleAH

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 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2304-10-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar
behavioral1/memory/2304-12-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar
behavioral1/memory/2304-11-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Drops startup file 1 IoCs

Processes:

6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\system.vbs	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.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:

6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe

description	pid	Process	procid_target
PID 1864 set thread context of 2304	1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe	30

Program crash 1 IoCs

Processes:

WerFault.exe

pid	pid_target	Process	procid_target
2316	1864	WerFault.exe	29

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:

RegAsm.exe6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe

pid	Process
1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe
1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe
1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe
1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe

pid	Process
1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description	pid	Process
Token: SeDebugPrivilege	2304	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid	Process
2304	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe

description	pid	Process	procid_target
PID 1864 wrote to memory of 2304	1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe	30
PID 1864 wrote to memory of 2304	1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe	30
PID 1864 wrote to memory of 2304	1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe	30
PID 1864 wrote to memory of 2304	1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe	30
PID 1864 wrote to memory of 2304	1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe	30
PID 1864 wrote to memory of 2304	1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe	30
PID 1864 wrote to memory of 2304	1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe	30
PID 1864 wrote to memory of 2304	1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe	30
PID 1864 wrote to memory of 2316	1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe	31
PID 1864 wrote to memory of 2316	1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe	31
PID 1864 wrote to memory of 2316	1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe	31
PID 1864 wrote to memory of 2316	1864	6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe	31

C:\Users\Admin\AppData\Local\Temp\6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe
"C:\Users\Admin\AppData\Local\Temp\6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.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:1864
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Users\Admin\AppData\Local\Temp\6915bde6ef5408870b2ccb6d578a4a0d753a2f6df3e286a41dbd68aaee70ba82N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2304
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1864 -s 216
  2⤵
  - Program crash
  PID:2316

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/1864-0-0x0000000000180000-0x0000000000181000-memory.dmp

Filesize
4KB

Download
memory/1864-2-0x0000000000180000-0x0000000000181000-memory.dmp

Filesize
4KB

Download
memory/1864-1-0x0000000000180000-0x0000000000181000-memory.dmp

Filesize
4KB

Download
memory/1864-3-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/1864-7-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/1864-6-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/1864-5-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/1864-4-0x0000000000180000-0x0000000000181000-memory.dmp

Filesize
4KB

Download
memory/2304-10-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2304-12-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2304-11-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads