quasar | da59a47ae6bde91de01f45a7c3ba4217bd91b4cb0087d58ed4e10eea50866e49

Analysis

max time kernel
4s
max time network
16s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
04-01-2025 01:16

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General

Target

robloxlist.exe
Size

348KB
MD5

cc0ce734de3f88924449b16df0c92911
SHA1

af48aa8c33b0d8f0757f9abe8938aa66dfa9a588
SHA256

da59a47ae6bde91de01f45a7c3ba4217bd91b4cb0087d58ed4e10eea50866e49
SHA512

c92a607b979a3013426ef181daced2792b451180d196078342dd64dcc6496cc98c824a67b60a7073f527ac905e12d62d61651b576e26a1921e60869c85bcd6b0
SSDEEP

6144:8uwb/c2L0t5kiOW9ubBcz7b3Ga66b2SO:7H2L5ly6czv3GalbJO

Score

10^/10

quasar clint discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Clint

192.168.178.29:4780

192.168.178.29:4782

Mutex

QSR_MUTEX_02VEKG7zCDubNpN0wF

Attributes

encryption_key
SPXni05TVd0oAIJtmwYk
install_name
robloxfisch.exe
log_directory
Log
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

resource	yara_rule
behavioral1/memory/1892-1-0x00000000000B0000-0x000000000010E000-memory.dmp	family_quasar
behavioral1/files/0x002b000000015c7b-4.dat	family_quasar
behavioral1/memory/2684-10-0x0000000001390000-0x00000000013EE000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2684	robloxfisch.exe

Loads dropped DLL 1 IoCs

pid	Process
1892	robloxlist.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

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

System Location Discovery: System Language Discovery 1 TTPs 4 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	robloxlist.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	robloxfisch.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	chrome.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	chrome.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	chrome.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2808	schtasks.exe
2504	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2100	chrome.exe
2100	chrome.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1892	robloxlist.exe
Token: SeDebugPrivilege	2684	robloxfisch.exe
Token: SeShutdownPrivilege	2100	chrome.exe
Token: SeShutdownPrivilege	2100	chrome.exe

Suspicious use of FindShellTrayWindow 34 IoCs

pid	Process
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe

Suspicious use of SendNotifyMessage 32 IoCs

pid	Process
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe
2100	chrome.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2684	robloxfisch.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1892 wrote to memory of 2808	1892	robloxlist.exe	31
PID 1892 wrote to memory of 2808	1892	robloxlist.exe	31
PID 1892 wrote to memory of 2808	1892	robloxlist.exe	31
PID 1892 wrote to memory of 2808	1892	robloxlist.exe	31
PID 1892 wrote to memory of 2684	1892	robloxlist.exe	33
PID 1892 wrote to memory of 2684	1892	robloxlist.exe	33
PID 1892 wrote to memory of 2684	1892	robloxlist.exe	33
PID 1892 wrote to memory of 2684	1892	robloxlist.exe	33
PID 2684 wrote to memory of 2504	2684	robloxfisch.exe	34
PID 2684 wrote to memory of 2504	2684	robloxfisch.exe	34
PID 2684 wrote to memory of 2504	2684	robloxfisch.exe	34
PID 2684 wrote to memory of 2504	2684	robloxfisch.exe	34
PID 2100 wrote to memory of 2996	2100	chrome.exe	37
PID 2100 wrote to memory of 2996	2100	chrome.exe	37
PID 2100 wrote to memory of 2996	2100	chrome.exe	37
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2136	2100	chrome.exe	38
PID 2100 wrote to memory of 2132	2100	chrome.exe	39
PID 2100 wrote to memory of 2132	2100	chrome.exe	39
PID 2100 wrote to memory of 2132	2100	chrome.exe	39
PID 2100 wrote to memory of 1312	2100	chrome.exe	40
PID 2100 wrote to memory of 1312	2100	chrome.exe	40
PID 2100 wrote to memory of 1312	2100	chrome.exe	40
PID 2100 wrote to memory of 1312	2100	chrome.exe	40
PID 2100 wrote to memory of 1312	2100	chrome.exe	40
PID 2100 wrote to memory of 1312	2100	chrome.exe	40
PID 2100 wrote to memory of 1312	2100	chrome.exe	40

C:\Users\Admin\AppData\Local\Temp\robloxlist.exe
"C:\Users\Admin\AppData\Local\Temp\robloxlist.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1892
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\robloxlist.exe" /rl HIGHEST /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2808
- C:\Users\Admin\AppData\Roaming\SubDir\robloxfisch.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\robloxfisch.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\robloxfisch.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2504

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe"
1⤵
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef6689758,0x7fef6689768,0x7fef6689778
  2⤵
  PID:2996
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1164 --field-trial-handle=1300,i,17797913199198545069,12012467269907127045,131072 /prefetch:2
  2⤵
  PID:2136
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1520 --field-trial-handle=1300,i,17797913199198545069,12012467269907127045,131072 /prefetch:8
  2⤵
  PID:2132
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1616 --field-trial-handle=1300,i,17797913199198545069,12012467269907127045,131072 /prefetch:8
  2⤵
  PID:1312
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2288 --field-trial-handle=1300,i,17797913199198545069,12012467269907127045,131072 /prefetch:1
  2⤵
  PID:2824
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2304 --field-trial-handle=1300,i,17797913199198545069,12012467269907127045,131072 /prefetch:1
  2⤵
  PID:2832
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1164 --field-trial-handle=1300,i,17797913199198545069,12012467269907127045,131072 /prefetch:2
  2⤵
  PID:2084
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=2932 --field-trial-handle=1300,i,17797913199198545069,12012467269907127045,131072 /prefetch:1
  2⤵
  PID:1580
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3692 --field-trial-handle=1300,i,17797913199198545069,12012467269907127045,131072 /prefetch:8
  2⤵
  PID:748

C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
1⤵
PID:1776

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:1544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\CURRENT

Filesize
16B

MD5
18e723571b00fb1694a3bad6c78e4054

SHA1
afcc0ef32d46fe59e0483f9a3c891d3034d12f32

SHA256
8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

SHA512
43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\ShaderCache\data_1

Filesize
264KB

MD5
f50f89a0a91564d0b8a211f8921aa7de

SHA1
112403a17dd69d5b9018b8cede023cb3b54eab7d

SHA256
b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

SHA512
bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

Download Submit
\Users\Admin\AppData\Roaming\SubDir\robloxfisch.exe

Filesize
348KB

MD5
cc0ce734de3f88924449b16df0c92911

SHA1
af48aa8c33b0d8f0757f9abe8938aa66dfa9a588

SHA256
da59a47ae6bde91de01f45a7c3ba4217bd91b4cb0087d58ed4e10eea50866e49

SHA512
c92a607b979a3013426ef181daced2792b451180d196078342dd64dcc6496cc98c824a67b60a7073f527ac905e12d62d61651b576e26a1921e60869c85bcd6b0

Download Submit
memory/1892-0-0x0000000073C0E000-0x0000000073C0F000-memory.dmp

Filesize
4KB

Download
memory/1892-1-0x00000000000B0000-0x000000000010E000-memory.dmp

Filesize
376KB

Download
memory/1892-2-0x0000000073C00000-0x00000000742EE000-memory.dmp

Filesize
6.9MB

Download
memory/1892-12-0x0000000073C00000-0x00000000742EE000-memory.dmp

Filesize
6.9MB

Download
memory/2684-9-0x0000000073C00000-0x00000000742EE000-memory.dmp

Filesize
6.9MB

Download
memory/2684-10-0x0000000001390000-0x00000000013EE000-memory.dmp

Filesize
376KB

Download
memory/2684-11-0x0000000073C00000-0x00000000742EE000-memory.dmp

Filesize
6.9MB

Download
memory/2684-70-0x0000000073C00000-0x00000000742EE000-memory.dmp

Filesize
6.9MB

Download