quasar | aae17c6e16a9840145c5573a06e39a49c000d13aef62a8cadc11bd6b23729ec7

Analysis

max time kernel
126s
max time network
135s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
03-01-2025 09:36

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General

Target

CrackedRobux.exe
Size

3.1MB
MD5

8158cd95de55261b19c72cb007682a97
SHA1

f3defde044bf5805ee824bed29c12507257bed86
SHA256

aae17c6e16a9840145c5573a06e39a49c000d13aef62a8cadc11bd6b23729ec7
SHA512

c0c1c5b917ff444cf4a7c06ace209831e15a86a91354e3e8f93a7842c3b2f9cbb6867769bf522799c1f8465fd95b038dc7d62c70c3258f076d0b9c30606792fc
SSDEEP

49152:LvzlL26AaNeWgPhlmVqvMQ7XSKyCq1JnhoGdWwTHHB72eh2NT:LvpL26AaNeWgPhlmVqkQ7XSKyCUm

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.1.1:4782

Mutex

2e4e5ad5-7396-46f0-ad6e-e30b507d18ec

Attributes

encryption_key
F4281B728FFBFD53624BD49C44B446D5CE9BE200
install_name
CrackedRobux.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Windows Calculator
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/2272-1-0x0000000001130000-0x0000000001454000-memory.dmp	family_quasar
behavioral1/files/0x0009000000016b47-6.dat	family_quasar
behavioral1/memory/2308-8-0x00000000001C0000-0x00000000004E4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2308	CrackedRobux.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
2912	schtasks.exe
2456	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2272	CrackedRobux.exe
Token: SeDebugPrivilege	2308	CrackedRobux.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2308	CrackedRobux.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2272 wrote to memory of 2912	2272	CrackedRobux.exe	30
PID 2272 wrote to memory of 2912	2272	CrackedRobux.exe	30
PID 2272 wrote to memory of 2912	2272	CrackedRobux.exe	30
PID 2272 wrote to memory of 2308	2272	CrackedRobux.exe	32
PID 2272 wrote to memory of 2308	2272	CrackedRobux.exe	32
PID 2272 wrote to memory of 2308	2272	CrackedRobux.exe	32
PID 2308 wrote to memory of 2456	2308	CrackedRobux.exe	33
PID 2308 wrote to memory of 2456	2308	CrackedRobux.exe	33
PID 2308 wrote to memory of 2456	2308	CrackedRobux.exe	33

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\CrackedRobux.exe
"C:\Users\Admin\AppData\Local\Temp\CrackedRobux.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2272
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "Windows Calculator" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\CrackedRobux.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2912
- C:\Users\Admin\AppData\Roaming\SubDir\CrackedRobux.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\CrackedRobux.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2308
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Windows Calculator" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\CrackedRobux.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2456

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\SubDir\CrackedRobux.exe

Filesize
3.1MB

MD5
8158cd95de55261b19c72cb007682a97

SHA1
f3defde044bf5805ee824bed29c12507257bed86

SHA256
aae17c6e16a9840145c5573a06e39a49c000d13aef62a8cadc11bd6b23729ec7

SHA512
c0c1c5b917ff444cf4a7c06ace209831e15a86a91354e3e8f93a7842c3b2f9cbb6867769bf522799c1f8465fd95b038dc7d62c70c3258f076d0b9c30606792fc

Download Submit
memory/2272-0-0x000007FEF58E3000-0x000007FEF58E4000-memory.dmp

Filesize
4KB

Download
memory/2272-1-0x0000000001130000-0x0000000001454000-memory.dmp

Filesize
3.1MB

Download
memory/2272-2-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2272-9-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2308-8-0x00000000001C0000-0x00000000004E4000-memory.dmp

Filesize
3.1MB

Download
memory/2308-10-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2308-11-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2308-12-0x000007FEF58E0000-0x000007FEF62CC000-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