quasar | 3fe52d194f176397ab988ef072b0cb64dd8a7997ce99e53fa36d94bc3d4beb45

Analysis

max time kernel
126s
max time network
143s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
18-12-2024 21:32

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General

Target

Blorious-V1.exe
Size

3.3MB
MD5

ab7ba1e3026b48ceadd7b68950f0e693
SHA1

18f1b5fb26221b6404b549b09699adb7663d9b60
SHA256

3fe52d194f176397ab988ef072b0cb64dd8a7997ce99e53fa36d94bc3d4beb45
SHA512

d595be554b5cc1824a4310c1cd81c4357833f49c2f1fe48ab9133d1d6abfa34377b039d40a9acbcaedd28955f5b3b4c5e5a15faa55b10a4f7eb2420deb948b41
SSDEEP

49152:rvyI22SsaNYfdPBldt698dBcjHjdSZ1J/foGdUNLTHHB72eh2NT:rvf22SsaNYfdPBldt6+dBcjHjdSp

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.0.134:4782

Mutex

b9145fb3-526d-41e5-a912-983ece635713

Attributes

encryption_key
44DC4ECD533CD0CB4AAF178AEB927FA0D40432AF
install_name
Blorious.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Microsoft Gaming Utility
subdirectory
Blorious

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/2920-1-0x0000000000FB0000-0x0000000001300000-memory.dmp	family_quasar
behavioral2/files/0x0028000000046174-3.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2720	Blorious.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
4672	schtasks.exe
4524	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2920	Blorious-V1.exe
Token: SeDebugPrivilege	2720	Blorious.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2720	Blorious.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2920 wrote to memory of 4672	2920	Blorious-V1.exe	84
PID 2920 wrote to memory of 4672	2920	Blorious-V1.exe	84
PID 2920 wrote to memory of 2720	2920	Blorious-V1.exe	86
PID 2920 wrote to memory of 2720	2920	Blorious-V1.exe	86
PID 2720 wrote to memory of 4524	2720	Blorious.exe	87
PID 2720 wrote to memory of 4524	2720	Blorious.exe	87

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\Blorious-V1.exe
"C:\Users\Admin\AppData\Local\Temp\Blorious-V1.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2920
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Microsoft Gaming Utility" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Blorious\Blorious.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4672
- C:\Users\Admin\AppData\Roaming\Blorious\Blorious.exe
  "C:\Users\Admin\AppData\Roaming\Blorious\Blorious.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2720
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Microsoft Gaming Utility" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Blorious\Blorious.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4524

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

Replay Monitor

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Downloads

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

Filesize
3.3MB

MD5
ab7ba1e3026b48ceadd7b68950f0e693

SHA1
18f1b5fb26221b6404b549b09699adb7663d9b60

SHA256
3fe52d194f176397ab988ef072b0cb64dd8a7997ce99e53fa36d94bc3d4beb45

SHA512
d595be554b5cc1824a4310c1cd81c4357833f49c2f1fe48ab9133d1d6abfa34377b039d40a9acbcaedd28955f5b3b4c5e5a15faa55b10a4f7eb2420deb948b41

Download Submit
memory/2720-6-0x00007FF826D20000-0x00007FF8277E2000-memory.dmp

Filesize
10.8MB

Download
memory/2720-7-0x00007FF826D20000-0x00007FF8277E2000-memory.dmp

Filesize
10.8MB

Download
memory/2720-8-0x0000000002600000-0x0000000002650000-memory.dmp

Filesize
320KB

Download
memory/2720-9-0x000000001DA80000-0x000000001DB32000-memory.dmp

Filesize
712KB

Download
memory/2720-10-0x00007FF826D20000-0x00007FF8277E2000-memory.dmp

Filesize
10.8MB

Download
memory/2920-0-0x00007FF826D23000-0x00007FF826D25000-memory.dmp

Filesize
8KB

Download
memory/2920-1-0x0000000000FB0000-0x0000000001300000-memory.dmp

Filesize
3.3MB

Download
memory/2920-2-0x00007FF826D20000-0x00007FF8277E2000-memory.dmp

Filesize
10.8MB

Download
memory/2920-5-0x00007FF826D20000-0x00007FF8277E2000-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