quasar | f6a0a782d574de811fe66ecf6416c69b486f9ca20faf96cfc863a00063306338

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-01-2025 03:45

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General

Target

f6a0a782d574de811fe66ecf6416c69b486f9ca20faf96cfc863a00063306338.exe
Size

3.1MB
MD5

b94af11cca65c557d23559e978a49d18
SHA1

0c3436d0c5df8e2e39bf4869bbe4413ca8d594b7
SHA256

f6a0a782d574de811fe66ecf6416c69b486f9ca20faf96cfc863a00063306338
SHA512

c1254360b2382957f043b8edcf36b28f13a93d0860dc9609d9b46eded81bc004e4149113e9eaad8b4d2cc18164942588bd4e97ecd8fce4f9afd8e537bc668b16
SSDEEP

49152:PvSI22SsaNYfdPBldt698dBcjHNGRJ67bR3LoGdGH3THHB72eh2NT:Pv/22SsaNYfdPBldt6+dBcjHNGRJ6N

Score

10^/10

quasar 28 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

194.26.192.167:2768

Mutex

859d5f90-e2d0-4b2d-ba9f-5371df032ec2

Attributes

encryption_key
BE2B0B270E4DB19CAA5C42E9D2EBF64645A2D055
install_name
RuntimeBroker.exe
log_directory
Logs
reconnect_delay
3000
startup_key
RuntimeBroker
subdirectory
RuntimeBroker

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/3788-1-0x00000000006A0000-0x00000000009C4000-memory.dmp	family_quasar
behavioral2/files/0x000a000000023b83-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1980	RuntimeBroker.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
4024	schtasks.exe
4492	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3788	f6a0a782d574de811fe66ecf6416c69b486f9ca20faf96cfc863a00063306338.exe
Token: SeDebugPrivilege	1980	RuntimeBroker.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1980	RuntimeBroker.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3788 wrote to memory of 4492	3788	f6a0a782d574de811fe66ecf6416c69b486f9ca20faf96cfc863a00063306338.exe	83
PID 3788 wrote to memory of 4492	3788	f6a0a782d574de811fe66ecf6416c69b486f9ca20faf96cfc863a00063306338.exe	83
PID 3788 wrote to memory of 1980	3788	f6a0a782d574de811fe66ecf6416c69b486f9ca20faf96cfc863a00063306338.exe	85
PID 3788 wrote to memory of 1980	3788	f6a0a782d574de811fe66ecf6416c69b486f9ca20faf96cfc863a00063306338.exe	85
PID 1980 wrote to memory of 4024	1980	RuntimeBroker.exe	86
PID 1980 wrote to memory of 4024	1980	RuntimeBroker.exe	86

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\f6a0a782d574de811fe66ecf6416c69b486f9ca20faf96cfc863a00063306338.exe
"C:\Users\Admin\AppData\Local\Temp\f6a0a782d574de811fe66ecf6416c69b486f9ca20faf96cfc863a00063306338.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3788
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\RuntimeBroker\RuntimeBroker.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4492
- C:\Users\Admin\AppData\Roaming\RuntimeBroker\RuntimeBroker.exe
  "C:\Users\Admin\AppData\Roaming\RuntimeBroker\RuntimeBroker.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1980
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\RuntimeBroker\RuntimeBroker.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4024

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

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\RuntimeBroker\RuntimeBroker.exe

Filesize
3.1MB

MD5
b94af11cca65c557d23559e978a49d18

SHA1
0c3436d0c5df8e2e39bf4869bbe4413ca8d594b7

SHA256
f6a0a782d574de811fe66ecf6416c69b486f9ca20faf96cfc863a00063306338

SHA512
c1254360b2382957f043b8edcf36b28f13a93d0860dc9609d9b46eded81bc004e4149113e9eaad8b4d2cc18164942588bd4e97ecd8fce4f9afd8e537bc668b16

Download Submit
memory/1980-10-0x00007FFE642D0000-0x00007FFE64D91000-memory.dmp

Filesize
10.8MB

Download
memory/1980-11-0x000000001BF50000-0x000000001BFA0000-memory.dmp

Filesize
320KB

Download
memory/1980-12-0x000000001D0C0000-0x000000001D172000-memory.dmp

Filesize
712KB

Download
memory/1980-13-0x00007FFE642D0000-0x00007FFE64D91000-memory.dmp

Filesize
10.8MB

Download
memory/3788-0-0x00007FFE642D3000-0x00007FFE642D5000-memory.dmp

Filesize
8KB

Download
memory/3788-1-0x00000000006A0000-0x00000000009C4000-memory.dmp

Filesize
3.1MB

Download
memory/3788-2-0x00007FFE642D0000-0x00007FFE64D91000-memory.dmp

Filesize
10.8MB

Download
memory/3788-9-0x00007FFE642D0000-0x00007FFE64D91000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads