quasar | 598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6

Analysis

max time kernel
149s
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
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

Processes:

resource	yara_rule
behavioral2/memory/212-19052-0x0000000000760000-0x00000000007AE000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

Processes:

598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

pid	Process
212	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\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.

Processes:

flow	ioc
31	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

Processes:

598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

description	pid	Process	procid_target
PID 4024 set thread context of 212	4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	95

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:

598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

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

Processes:

598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

pid	Process
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

description	pid	Process
Token: SeDebugPrivilege	4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
Token: SeDebugPrivilege	212	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

pid	Process
212	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

description	pid	Process	procid_target
PID 4024 wrote to memory of 212	4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	95
PID 4024 wrote to memory of 212	4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	95
PID 4024 wrote to memory of 212	4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	95
PID 4024 wrote to memory of 212	4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	95
PID 4024 wrote to memory of 212	4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	95
PID 4024 wrote to memory of 212	4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	95
PID 4024 wrote to memory of 212	4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	95
PID 4024 wrote to memory of 212	4024	598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe	95

C:\Users\Admin\AppData\Local\Temp\598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe
"C:\Users\Admin\AppData\Local\Temp\598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.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:4024
- 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:212

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

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe.log

Filesize
517B

MD5
4d737622dcf53d4cf89810ec284fdf89

SHA1
a71b0c3ac6b940047ca7730465c1f97342c8ca08

SHA256
7d5529c9d51a138cea4ae46faa32497ccf1e55d6bd5aa43f746d413ce80fa1cb

SHA512
acf53d9d2ffe5e3dd34760e3c8e138229ee9805387ddf0765266ee882268cf64f84fb4a1b79aee3f90b88b50f1a1bbf10c9ba7a1013496059b46f3abe9c859c6

Download Submit
C:\Users\Admin\AppData\Local\Temp\598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6.exe

Filesize
2.9MB

MD5
35ebffea09e4aaa9d51739350ed89cf3

SHA1
79497ec75bfa2908a7309dd32950706c1dff55f3

SHA256
598e9e785106149f7c6b15754cfff25dc9e63c9a4f31dd2adfae9f89ee7114c6

SHA512
333f8321a560a82dc63b25354174e9757ff9e9c4b531bd5a28a667da791e5c41902597f1ae22eee6631e8bd82aab4ea8ba06ef8193c435ca63d7cf5c35952b18

Download Submit
memory/212-19051-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/212-19052-0x0000000000760000-0x00000000007AE000-memory.dmp

Filesize
312KB

Download
memory/212-19053-0x0000000005490000-0x0000000005A34000-memory.dmp

Filesize
5.6MB

Download
memory/212-19060-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/212-19059-0x00000000067B0000-0x00000000067BA000-memory.dmp

Filesize
40KB

Download
memory/212-19057-0x0000000006440000-0x000000000647C000-memory.dmp

Filesize
240KB

Download
memory/212-19056-0x0000000005DC0000-0x0000000005DD2000-memory.dmp

Filesize
72KB

Download
memory/212-19055-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/212-19054-0x0000000005050000-0x00000000050E2000-memory.dmp

Filesize
584KB

Download
memory/4024-38-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-26-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-68-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-66-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-64-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-62-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-59-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-56-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-54-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-52-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-50-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-48-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-46-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-42-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-40-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-44-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-36-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-34-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-32-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-30-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-28-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-60-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-24-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-22-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-16-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-15-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/4024-11-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-9-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-8-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-4-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

Download
memory/4024-3-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

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memory/4024-2-0x0000000005420000-0x0000000005552000-memory.dmp

Filesize
1.2MB

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memory/4024-4220-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

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memory/4024-4172-0x000000007526E000-0x000000007526F000-memory.dmp

Filesize
4KB

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memory/4024-20-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

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memory/4024-18-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

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memory/4024-13-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

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memory/4024-5-0x0000000005420000-0x000000000554B000-memory.dmp

Filesize
1.2MB

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memory/4024-1-0x00000000005D0000-0x00000000008B2000-memory.dmp

Filesize
2.9MB

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memory/4024-0-0x000000007526E000-0x000000007526F000-memory.dmp

Filesize
4KB

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memory/4024-19045-0x00000000059B0000-0x0000000005A16000-memory.dmp

Filesize
408KB

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memory/4024-19050-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

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