quasar | f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29-12-2024 23:18

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General

Target

f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe
Size

2.4MB
MD5

784260bbf2c8f92a2cd0552900a1983e
SHA1

1eb1608eb7aabf22f3080685f15672a7986e5b95
SHA256

f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f
SHA512

c60df4c3646dd957361041e7298c06d0777c0d539739157b1a517a4ce6d3013a9e1d515f19d29b17a4ffcd93b05f4c02fbce23656dc00985d3f14e6604bbb1a6
SSDEEP

49152:3KOKKMIKOMSSMgyzMQPNNg6qP9GpwqkEpaAo7Yryvs+Nio:3KOKQ9pqP9GeKo7Yryvs+

Score

10^/10

quasar 2025 discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

2025

win32updatess.duckdns.org:1

Mutex

QSR_MUTEX_VKitseSn9Cn8XocDzU

Attributes

encryption_key
dz4iQKTjWYrscDgj45Ki
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

resource	yara_rule
behavioral2/memory/4468-1199-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 3060 created 3472	3060	f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe	56

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Dataupdate.vbs	f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.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.

flow	ioc
12	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3060 set thread context of 4468	3060	f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3060	f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3060	f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe
Token: SeDebugPrivilege	3060	f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe
Token: SeDebugPrivilege	4468	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4468	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3060 wrote to memory of 4468	3060	f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe	87
PID 3060 wrote to memory of 4468	3060	f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe	87
PID 3060 wrote to memory of 4468	3060	f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe	87
PID 3060 wrote to memory of 4468	3060	f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe	87
PID 3060 wrote to memory of 4468	3060	f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe	87
PID 3060 wrote to memory of 4468	3060	f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe	87
PID 3060 wrote to memory of 4468	3060	f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe	87
PID 3060 wrote to memory of 4468	3060	f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe	87

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3472
- C:\Users\Admin\AppData\Local\Temp\f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe
  "C:\Users\Admin\AppData\Local\Temp\f672fca65253e29223346f9f19468bcf77345414d8bb85f58a1f15425dcb6d6f.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Drops startup file
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3060
- 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:4468

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3060-0-0x000000007513E000-0x000000007513F000-memory.dmp

Filesize
4KB

Download
memory/3060-1-0x0000000000730000-0x000000000099A000-memory.dmp

Filesize
2.4MB

Download
memory/3060-2-0x0000000005340000-0x0000000005452000-memory.dmp

Filesize
1.1MB

Download
memory/3060-3-0x0000000005A20000-0x0000000005FC4000-memory.dmp

Filesize
5.6MB

Download
memory/3060-4-0x0000000005550000-0x00000000055E2000-memory.dmp

Filesize
584KB

Download
memory/3060-12-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-18-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-24-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-22-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-20-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-16-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-14-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-10-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-6-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-8-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-5-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-28-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-42-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-68-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-67-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-64-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-62-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-60-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-58-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-56-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-54-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-50-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-48-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-40-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-39-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-52-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-30-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-46-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-44-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-36-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-34-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-32-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-26-0x0000000005340000-0x000000000544C000-memory.dmp

Filesize
1.0MB

Download
memory/3060-1181-0x0000000075130000-0x00000000758E0000-memory.dmp

Filesize
7.7MB

Download
memory/3060-1182-0x0000000075130000-0x00000000758E0000-memory.dmp

Filesize
7.7MB

Download
memory/3060-1183-0x0000000005650000-0x00000000056D2000-memory.dmp

Filesize
520KB

Download
memory/3060-1184-0x00000000055F0000-0x000000000563C000-memory.dmp

Filesize
304KB

Download
memory/3060-1185-0x0000000005740000-0x0000000005794000-memory.dmp

Filesize
336KB

Download
memory/3060-1189-0x0000000075130000-0x00000000758E0000-memory.dmp

Filesize
7.7MB

Download
memory/3060-1193-0x0000000075130000-0x00000000758E0000-memory.dmp

Filesize
7.7MB

Download
memory/3060-1197-0x0000000075130000-0x00000000758E0000-memory.dmp

Filesize
7.7MB

Download
memory/3060-1196-0x0000000075130000-0x00000000758E0000-memory.dmp

Filesize
7.7MB

Download
memory/3060-1195-0x0000000075130000-0x00000000758E0000-memory.dmp

Filesize
7.7MB

Download
memory/4468-1198-0x0000000075130000-0x00000000758E0000-memory.dmp

Filesize
7.7MB

Download
memory/4468-1199-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/4468-1200-0x0000000075130000-0x00000000758E0000-memory.dmp

Filesize
7.7MB

Download
memory/4468-1201-0x00000000055B0000-0x0000000005616000-memory.dmp

Filesize
408KB

Download
memory/4468-1202-0x00000000062C0000-0x00000000062D2000-memory.dmp

Filesize
72KB

Download
memory/4468-1203-0x0000000006700000-0x000000000673C000-memory.dmp

Filesize
240KB

Download
memory/4468-1205-0x0000000006A80000-0x0000000006A8A000-memory.dmp

Filesize
40KB

Download
memory/4468-1206-0x0000000075130000-0x00000000758E0000-memory.dmp

Filesize
7.7MB

Download