quasar | cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2

General

Target

cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe
Size

480KB
MD5

6c6ecb9b9ae4845d8a366524aea58510
SHA1

b1f17cbeb74defa1cb32ac8640c1ed717572a3e9
SHA256

cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2
SHA512

bcd09fff18bb8daf4b33e5691d72adba97a4afdda0006a1cc55ee270a0c705371d1a245659784d087ae43f89df5f215db66b084403c1a5231d07cfccf1622621
SSDEEP

12288:iww6xvH9M3Ir55+JpWQbe6Ef4D+2u+4gnflehW:inKP9M4r55+JAQGf4D+2tleA

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/2560-14-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar
behavioral1/memory/2560-16-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar
behavioral1/memory/2560-15-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Drops startup file 1 IoCs

Processes:

cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\system.vbs	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.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:

cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe

description	pid	Process	procid_target
PID 2500 set thread context of 2560	2500	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe	30

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:

cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exeRegAsm.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe

pid	Process
2500	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe
2500	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe
2500	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe
2500	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe

pid	Process
2500	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description	pid	Process
Token: SeDebugPrivilege	2560	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid	Process
2560	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe

description	pid	Process	procid_target
PID 2500 wrote to memory of 2560	2500	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe	30
PID 2500 wrote to memory of 2560	2500	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe	30
PID 2500 wrote to memory of 2560	2500	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe	30
PID 2500 wrote to memory of 2560	2500	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe	30
PID 2500 wrote to memory of 2560	2500	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe	30
PID 2500 wrote to memory of 2560	2500	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe	30
PID 2500 wrote to memory of 2560	2500	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe	30
PID 2500 wrote to memory of 2560	2500	cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe	30

C:\Users\Admin\AppData\Local\Temp\cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe
"C:\Users\Admin\AppData\Local\Temp\cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.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:2500
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Users\Admin\AppData\Local\Temp\cbe2c0ca7b943fb00138c1b6a2465938e5565ba41a30e66df7d425e30ffd56a2N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2560

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/2500-0-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/2500-7-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/2500-6-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/2500-5-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/2500-4-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/2500-3-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/2500-2-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/2500-1-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/2500-11-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/2500-10-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2500-9-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2500-8-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2560-14-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2560-16-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2560-15-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads