quasar | 598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6

Analysis

max time kernel
148s
max time network
156s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
27/11/2024, 14:02

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General

Target

598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
Size

2.9MB
MD5

35ebffea09e4aaa9d51739350ed89cf3
SHA1

79497ec75bfa2908a7309dd32950706c1dff55f3
SHA256

598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6
SHA512

333f8321a560a82dc63b25354174e9757ff9e9c4b531bd5a28a667da791e5c41902597f1ae22eee6631e8bd82aab4ea8ba06ef8193c435ca63d7cf5c35952b18
SSDEEP

49152:5XEhhcszRwpZBYWmvU0CDNB7gQ18drEXl7SY:5XEhHMBLbDNB7gQiWXl7b

Score

10^/10

quasar cloud discovery persistence spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.0.0

Botnet

CLOUD

clouddns.ydns.eu:4782

Mutex

Y0L5BBr3LYevMGkjTR

Attributes

encryption_key
NQFoBAkHvOScg2EgzstO
install_name
CasPol.exe
log_directory
Logs
reconnect_delay
3000
startup_key
AppLaunch
subdirectory
ResourceWindows

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar family
quasar

Quasar payload 1 IoCs

resource	yara_rule
behavioral1/memory/5100-19060-0x0000000000400000-0x000000000044E000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
5100	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

Loads dropped DLL 1 IoCs

pid	Process
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\666999666 = "C:\\ProgramData\\598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe"	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.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
2	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2856 set thread context of 5100	2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	31

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	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
Token: SeDebugPrivilege	5100	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5100	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 5100	2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	31
PID 2856 wrote to memory of 5100	2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	31
PID 2856 wrote to memory of 5100	2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	31
PID 2856 wrote to memory of 5100	2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	31
PID 2856 wrote to memory of 5100	2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	31
PID 2856 wrote to memory of 5100	2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	31
PID 2856 wrote to memory of 5100	2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	31
PID 2856 wrote to memory of 5100	2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	31
PID 2856 wrote to memory of 5100	2856	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	31

C:\Users\Admin\AppData\Local\Temp\598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
"C:\Users\Admin\AppData\Local\Temp\598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe"
1⤵
- Loads dropped DLL
- 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:2856
- C:\Users\Admin\AppData\Local\Temp\598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
  "C:\Users\Admin\AppData\Local\Temp\598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:5100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

Filesize
2.9MB

MD5
35ebffea09e4aaa9d51739350ed89cf3

SHA1
79497ec75bfa2908a7309dd32950706c1dff55f3

SHA256
598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6

SHA512
333f8321a560a82dc63b25354174e9757ff9e9c4b531bd5a28a667da791e5c41902597f1ae22eee6631e8bd82aab4ea8ba06ef8193c435ca63d7cf5c35952b18

Download Submit
memory/2856-38-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-24-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-3-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-4-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-6-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-8-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-10-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-12-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-14-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-42-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-22-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-34-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-32-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-36-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-30-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-28-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-26-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-0-0x0000000077B30000-0x0000000077CD9000-memory.dmp

Filesize
1.7MB

Download
memory/2856-2-0x0000000004CC0000-0x0000000004DF2000-memory.dmp

Filesize
1.2MB

Download
memory/2856-40-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-16-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-20-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-46-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-48-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-54-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-52-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-56-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-58-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-60-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-64-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-62-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-66-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-18-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-44-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-50-0x0000000004CC0000-0x0000000004DEB000-memory.dmp

Filesize
1.2MB

Download
memory/2856-1-0x0000000000C70000-0x0000000000F52000-memory.dmp

Filesize
2.9MB

Download
memory/5100-19059-0x0000000077B30000-0x0000000077CD9000-memory.dmp

Filesize
1.7MB

Download
memory/5100-19060-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download