quasar | b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306

General

Target

b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe
Size

915KB
MD5

79230f7919ceacf3691022cd98371ac9
SHA1

0744f3c5943c02459ec981a8c5aa8f70354e231d
SHA256

b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306
SHA512

5e58efbe54384fa149fd161e6c0a8a02222206aa49c76d3a82442a4988c057b60bdbd18f3c5a1a54df979583f7efd1e62a96516b7872ddf92ee1a1280fea21a5
SSDEEP

12288:QTm5HboTOZCdLPW4y/mA0vavdKicFJlvLhy+CYYOCXleLdJw7FFSXnKpSDCjap:QC/lwaUicFs+CYYOz2FFf4

Score

10^/10

quasar nero burning discovery persistence spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Nero Burning

C2

craftUP.giize.com:1981

Mutex

BBzSa82IRLs6ETOrGg

Attributes

encryption_key
3rtKM7Lqb1dyokF6xwWI
install_name
Client.exe
log_directory
VR
reconnect_delay
4000
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/4232-8-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WondershareFilmoraX = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Wondershare Filmora X\\WondershareFilmoraX.exe\""	b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.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
14	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

Processes:

b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe

description	pid	Process	procid_target
PID 3472 set thread context of 4232	3472	b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe	87

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:

b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exeRegAsm.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe

pid	Process
3472	b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe
3472	b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exeRegAsm.exe

description	pid	Process
Token: SeDebugPrivilege	3472	b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe
Token: SeDebugPrivilege	4232	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid	Process
4232	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe

description	pid	Process	procid_target
PID 3472 wrote to memory of 4232	3472	b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe	87
PID 3472 wrote to memory of 4232	3472	b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe	87
PID 3472 wrote to memory of 4232	3472	b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe	87
PID 3472 wrote to memory of 4232	3472	b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe	87
PID 3472 wrote to memory of 4232	3472	b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe	87
PID 3472 wrote to memory of 4232	3472	b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe	87
PID 3472 wrote to memory of 4232	3472	b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe	87
PID 3472 wrote to memory of 4232	3472	b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe	87

C:\Users\Admin\AppData\Local\Temp\b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe
"C:\Users\Admin\AppData\Local\Temp\b908aa8080c5db3065ad271c7526ac50a873270825fc636246bc37ea01af8306.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3472
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3472-0-0x000000007515E000-0x000000007515F000-memory.dmp

Filesize
4KB

Download
memory/3472-1-0x0000000000D60000-0x0000000000E4C000-memory.dmp

Filesize
944KB

Download
memory/3472-2-0x0000000005730000-0x00000000057A2000-memory.dmp

Filesize
456KB

Download
memory/3472-3-0x0000000005920000-0x0000000005986000-memory.dmp

Filesize
408KB

Download
memory/3472-4-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download
memory/3472-5-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download
memory/3472-7-0x0000000005900000-0x000000000591C000-memory.dmp

Filesize
112KB

Download
memory/3472-10-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download
memory/4232-11-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download
memory/4232-8-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/4232-12-0x00000000054B0000-0x0000000005A54000-memory.dmp

Filesize
5.6MB

Download
memory/4232-13-0x0000000004FA0000-0x0000000005032000-memory.dmp

Filesize
584KB

Download
memory/4232-14-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download
memory/4232-15-0x0000000005EC0000-0x0000000005ED2000-memory.dmp

Filesize
72KB

Download
memory/4232-16-0x0000000006300000-0x000000000633C000-memory.dmp

Filesize
240KB

Download
memory/4232-18-0x0000000006670000-0x000000000667A000-memory.dmp

Filesize
40KB

Download
memory/4232-19-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads