quasar | b8eb465bbb020409e055cad78ee0e018cb2247b88680423606a047179e639514

Analysis

max time kernel
114s
max time network
141s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250113-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250113-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
15-01-2025 01:46

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General

Target

OrcusLauncher.exe
Size

3.1MB
MD5

9014a380f413db354bb33eaa9efd50b0
SHA1

c91bd9d185c9c05e0c1c2fa1fdd43febdd146e9a
SHA256

b8eb465bbb020409e055cad78ee0e018cb2247b88680423606a047179e639514
SHA512

7ec94e7d099a0d3e21b9df1bea32b1befea7f4dbfef692d56959675a3371ed53afcb063ab635e643c43c2e5ab98be2516211ec564ac41e59ac4863fdc8e40603
SSDEEP

49152:KvCI22SsaNYfdPBldt698dBcjHV89LBmzFSoGd6fTHHB72eh2NT:KvP22SsaNYfdPBldt6+dBcjHC9Lh

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

hi-tin.gl.at.ply.gg:14413

Mutex

a7a63354-73e8-4f60-93c0-dfe7bb74afe3

Attributes

encryption_key
00B725E3944DCC9CC2ADDC0820F57FE1981B6AC6
install_name
Client.exe
log_directory
Logs
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 2 IoCs

resource	yara_rule
behavioral1/memory/3560-1-0x0000000000290000-0x00000000005B4000-memory.dmp	family_quasar
behavioral1/files/0x00280000000461ad-3.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2380	Client.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
1632	schtasks.exe
1996	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe
2380	Client.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3560	OrcusLauncher.exe
Token: SeDebugPrivilege	2380	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3560 wrote to memory of 1632	3560	OrcusLauncher.exe	84
PID 3560 wrote to memory of 1632	3560	OrcusLauncher.exe	84
PID 3560 wrote to memory of 2380	3560	OrcusLauncher.exe	86
PID 3560 wrote to memory of 2380	3560	OrcusLauncher.exe	86
PID 2380 wrote to memory of 1996	2380	Client.exe	87
PID 2380 wrote to memory of 1996	2380	Client.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\OrcusLauncher.exe
"C:\Users\Admin\AppData\Local\Temp\OrcusLauncher.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3560
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1632
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2380
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1996

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\Client.exe

Filesize
3.1MB

MD5
9014a380f413db354bb33eaa9efd50b0

SHA1
c91bd9d185c9c05e0c1c2fa1fdd43febdd146e9a

SHA256
b8eb465bbb020409e055cad78ee0e018cb2247b88680423606a047179e639514

SHA512
7ec94e7d099a0d3e21b9df1bea32b1befea7f4dbfef692d56959675a3371ed53afcb063ab635e643c43c2e5ab98be2516211ec564ac41e59ac4863fdc8e40603

Download Submit
memory/2380-5-0x00007FFE36370000-0x00007FFE36E32000-memory.dmp

Filesize
10.8MB

Download
memory/2380-7-0x00007FFE36370000-0x00007FFE36E32000-memory.dmp

Filesize
10.8MB

Download
memory/2380-8-0x000000001B710000-0x000000001B760000-memory.dmp

Filesize
320KB

Download
memory/2380-9-0x000000001DFE0000-0x000000001E092000-memory.dmp

Filesize
712KB

Download
memory/2380-10-0x00007FFE36370000-0x00007FFE36E32000-memory.dmp

Filesize
10.8MB

Download
memory/2380-11-0x000000001B590000-0x000000001B5A2000-memory.dmp

Filesize
72KB

Download
memory/2380-12-0x000000001B760000-0x000000001B79C000-memory.dmp

Filesize
240KB

Download
memory/3560-0-0x00007FFE36373000-0x00007FFE36375000-memory.dmp

Filesize
8KB

Download
memory/3560-1-0x0000000000290000-0x00000000005B4000-memory.dmp

Filesize
3.1MB

Download
memory/3560-2-0x00007FFE36370000-0x00007FFE36E32000-memory.dmp

Filesize
10.8MB

Download
memory/3560-6-0x00007FFE36370000-0x00007FFE36E32000-memory.dmp

Filesize
10.8MB

Download