quasar | d0808993597c7282681815789d64209ce8ccdf5dad41e4ea867ac81f14752ef4

Analysis

max time kernel
93s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11/01/2025, 07:50

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General

Target

xeno+.exe
Size

3.1MB
MD5

03159c4b3d8d1c3e2058a44a5d4ffa4a
SHA1

109270f59115cc704501fbea1890abd7864cc83f
SHA256

d0808993597c7282681815789d64209ce8ccdf5dad41e4ea867ac81f14752ef4
SHA512

12f828d32a509a076f69896fcffdf6da50e4e8e23dd2230f8288dacbbbb2c4391c0e1663fc2efc21ab55cedd081e43f6143d84f7ae29977fe9da61a705394abd
SSDEEP

49152:fvHlL26AaNeWgPhlmVqvMQ7XSKuRRJ6ObR3LoGd8THHB72eh2NT:fvFL26AaNeWgPhlmVqkQ7XSKuRRJ6I

Score

10^/10

quasar office04 spyware stealer trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

augustinevegas-31173.portmap.host:31173

Mutex

7d74883a-5879-4f61-8c23-fc7af453d7c2

Attributes

encryption_key
0B6DCD2BE4C82058601AFDA4AB9525FABE85A71D
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/4068-1-0x0000000000410000-0x0000000000734000-memory.dmp	family_quasar
behavioral1/files/0x000a000000023b72-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2044	Client.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4068	xeno+.exe
Token: SeDebugPrivilege	2044	Client.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2044	Client.exe
2044	Client.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2044	Client.exe
2044	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2044	Client.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4068 wrote to memory of 2044	4068	xeno+.exe	83
PID 4068 wrote to memory of 2044	4068	xeno+.exe	83

C:\Users\Admin\AppData\Local\Temp\xeno+.exe
"C:\Users\Admin\AppData\Local\Temp\xeno+.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4068
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:2044

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

Filesize
3.1MB

MD5
03159c4b3d8d1c3e2058a44a5d4ffa4a

SHA1
109270f59115cc704501fbea1890abd7864cc83f

SHA256
d0808993597c7282681815789d64209ce8ccdf5dad41e4ea867ac81f14752ef4

SHA512
12f828d32a509a076f69896fcffdf6da50e4e8e23dd2230f8288dacbbbb2c4391c0e1663fc2efc21ab55cedd081e43f6143d84f7ae29977fe9da61a705394abd

Download Submit
memory/2044-9-0x00007FFE58310000-0x00007FFE58DD1000-memory.dmp

Filesize
10.8MB

Download
memory/2044-10-0x00007FFE58310000-0x00007FFE58DD1000-memory.dmp

Filesize
10.8MB

Download
memory/2044-11-0x000000001C5D0000-0x000000001C620000-memory.dmp

Filesize
320KB

Download
memory/2044-12-0x000000001C6E0000-0x000000001C792000-memory.dmp

Filesize
712KB

Download
memory/2044-15-0x000000001C660000-0x000000001C672000-memory.dmp

Filesize
72KB

Download
memory/2044-16-0x000000001D1E0000-0x000000001D21C000-memory.dmp

Filesize
240KB

Download
memory/2044-17-0x00007FFE58310000-0x00007FFE58DD1000-memory.dmp

Filesize
10.8MB

Download
memory/4068-0-0x00007FFE58313000-0x00007FFE58315000-memory.dmp

Filesize
8KB

Download
memory/4068-1-0x0000000000410000-0x0000000000734000-memory.dmp

Filesize
3.1MB

Download
memory/4068-2-0x00007FFE58310000-0x00007FFE58DD1000-memory.dmp

Filesize
10.8MB

Download
memory/4068-8-0x00007FFE58310000-0x00007FFE58DD1000-memory.dmp

Filesize
10.8MB

Download