quasar | f853596287c8f345eba943acdc0747f19bed0e5ebc041bc0ab1aa61413d970d9

Analysis

max time kernel
63s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
18-12-2024 07:27

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General

Target

f853596287c8f345eba943acdc0747f19bed0e5ebc041bc0ab1aa61413d970d9.exe
Size

3.1MB
MD5

df7b0e428b11f8aa5102168e65156a3b
SHA1

7a48d280aee1b17e8a2e36b21c7441d4670cc7bc
SHA256

f853596287c8f345eba943acdc0747f19bed0e5ebc041bc0ab1aa61413d970d9
SHA512

c3dee0a61bc87eb230dce708172c95c5b3209d6d3c07198c2b92b68e5bd6d10e0ddf5193c4ad98be3bcb24e9627ef936de2a78274f477b33cacfe5117dc97abb
SSDEEP

49152:HvyI22SsaNYfdPBldt698dBcjH+a071Jv0oGdPZTHHB72eh2NT:Hvf22SsaNYfdPBldt6+dBcjH+a0A/

Score

10^/10

quasar brouteur spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

BROUTEUR

voltazur.ddns.net:4789

Mutex

b435e96f-9e1a-4119-b07d-1ebccf7eb1b5

Attributes

encryption_key
77E1CE64C90713D69376A654F4C56C1E0262C545
install_name
Clients.exe
log_directory
Logs
reconnect_delay
3000
startup_key
WindowsSystemTask
subdirectory
SubDare

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/1680-1-0x0000000000CC0000-0x0000000000FE4000-memory.dmp	family_quasar

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\SubDare\Clients.exe	f853596287c8f345eba943acdc0747f19bed0e5ebc041bc0ab1aa61413d970d9.exe
File opened for modification	C:\Program Files\SubDare\Clients.exe	f853596287c8f345eba943acdc0747f19bed0e5ebc041bc0ab1aa61413d970d9.exe

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
2932	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1680	f853596287c8f345eba943acdc0747f19bed0e5ebc041bc0ab1aa61413d970d9.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 2932	1680	f853596287c8f345eba943acdc0747f19bed0e5ebc041bc0ab1aa61413d970d9.exe	30
PID 1680 wrote to memory of 2932	1680	f853596287c8f345eba943acdc0747f19bed0e5ebc041bc0ab1aa61413d970d9.exe	30
PID 1680 wrote to memory of 2932	1680	f853596287c8f345eba943acdc0747f19bed0e5ebc041bc0ab1aa61413d970d9.exe	30

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\f853596287c8f345eba943acdc0747f19bed0e5ebc041bc0ab1aa61413d970d9.exe
"C:\Users\Admin\AppData\Local\Temp\f853596287c8f345eba943acdc0747f19bed0e5ebc041bc0ab1aa61413d970d9.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1680
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "WindowsSystemTask" /sc ONLOGON /tr "C:\Program Files\SubDare\Clients.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2932

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/1680-0-0x000007FEF5583000-0x000007FEF5584000-memory.dmp

Filesize
4KB

Download
memory/1680-1-0x0000000000CC0000-0x0000000000FE4000-memory.dmp

Filesize
3.1MB

Download
memory/1680-2-0x000007FEF5580000-0x000007FEF5F6C000-memory.dmp

Filesize
9.9MB

Download
memory/1680-4-0x000007FEF5583000-0x000007FEF5584000-memory.dmp

Filesize
4KB

Download
memory/1680-5-0x000007FEF5580000-0x000007FEF5F6C000-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