quasar | 492a651e5ae2020b3b7fd51861adf68402089d050e083c3a9ef1a9866256000c

Analysis

max time kernel
12s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
17-12-2024 02:39

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General

Target

492a651e5ae2020b3b7fd51861adf68402089d050e083c3a9ef1a9866256000c.exe
Size

3.1MB
MD5

b77d847b1d41cde07f81168c7addbb10
SHA1

2d5c614efdef7ab59fa5fb665d6ed1a79502b97f
SHA256

492a651e5ae2020b3b7fd51861adf68402089d050e083c3a9ef1a9866256000c
SHA512

6fff7c253c543e370dcb459f0cc66003f57fbc35f40af5744deca97a2c593bf0881f96c845bbc15963e9eb81a652aec78a500ea41f2d1af5fbb5f0ec04c6c9f6
SSDEEP

49152:nvelL26AaNeWgPhlmVqvMQ7XSKqaRJ61bR3LoGdEjTHHB72eh2NT:nvOL26AaNeWgPhlmVqkQ7XSKqaRJ6H

Score

10^/10

quasar runtimebroker spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

RuntimeBroker

siembonik-44853.portmap.host:44853

Mutex

df483a08-855b-4bf5-bdcb-174788919889

Attributes

encryption_key
A8573AD4438B1D5F6207F7C03CCC7F1E2D4B13DF
install_name
RuntimeBroker.exe
log_directory
Logs
reconnect_delay
3000
startup_key
RuntimeBroker
subdirectory
am1

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/1088-1-0x0000000000A60000-0x0000000000D84000-memory.dmp	family_quasar

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2148	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1088	492a651e5ae2020b3b7fd51861adf68402089d050e083c3a9ef1a9866256000c.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 2148	1088	492a651e5ae2020b3b7fd51861adf68402089d050e083c3a9ef1a9866256000c.exe	29
PID 1088 wrote to memory of 2148	1088	492a651e5ae2020b3b7fd51861adf68402089d050e083c3a9ef1a9866256000c.exe	29
PID 1088 wrote to memory of 2148	1088	492a651e5ae2020b3b7fd51861adf68402089d050e083c3a9ef1a9866256000c.exe	29

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\492a651e5ae2020b3b7fd51861adf68402089d050e083c3a9ef1a9866256000c.exe
"C:\Users\Admin\AppData\Local\Temp\492a651e5ae2020b3b7fd51861adf68402089d050e083c3a9ef1a9866256000c.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1088
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\am1\RuntimeBroker.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2148

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

memory/1088-0-0x000007FEF5DE3000-0x000007FEF5DE4000-memory.dmp

Filesize
4KB

Download
memory/1088-1-0x0000000000A60000-0x0000000000D84000-memory.dmp

Filesize
3.1MB

Download
memory/1088-2-0x000007FEF5DE0000-0x000007FEF67CC000-memory.dmp

Filesize
9.9MB

Download
memory/1088-4-0x000007FEF5DE3000-0x000007FEF5DE4000-memory.dmp

Filesize
4KB

Download
memory/1088-5-0x000007FEF5DE0000-0x000007FEF67CC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads