quasar | 585994f293d32b4ec6e4dc54d1070be1d354cc8d664e093e04f803668a5dd7eb | Triage

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Reports

Overview

overview

Static

static

3

ConfigOnlyfan.exe

windows7-x64

ConfigOnlyfan.exe

windows10-2004-x64

Sharing

General

Target

ConfigOnlyfan.exe
Size

1.7MB
Sample

250327-c9fx8awwgs
MD5

126d31857003b2419fcbbb56badd03ec
SHA1

3d3dba10a7b40717d5417c69e8ef877e9e020e5b
SHA256

585994f293d32b4ec6e4dc54d1070be1d354cc8d664e093e04f803668a5dd7eb
SHA512

5e28b04d1af7dd44425c38ca6d44ccb7070ba5e19023762012f40e5bfc844d9814faec5af50dd284ffda0077be8fa00f8a23fd08c7bc692639f4c56e5d126be3
SSDEEP

49152:zgqKIXz0IxxiXIHLyolt7queAFJX4PxYL:zzXxqIHL5t7bRIE

Score

10^/10

quasar office04 spyware trojan

Static task

static1

1 signatures

Behavioral task

behavioral1

Sample

ConfigOnlyfan.exe

Resource

win7-20241023-en

quasar office04 spyware trojan

windows7-x64

10 signatures

150 seconds

Behavioral task

behavioral2

Sample

ConfigOnlyfan.exe

Resource

win10v2004-20250314-en

quasar office04 spyware trojan

windows10-2004-x64

11 signatures

150 seconds

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.0.106:4782

Mutex

9c07f090-acd6-4680-ab7f-3c91d1c0952e

Attributes

encryption_key
08BDB12AD6EA6C42AF768FC9E335BD427791BC89
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Targets

- Target
  
  ConfigOnlyfan.exe
- Size
  
  1.7MB
- MD5
  
  126d31857003b2419fcbbb56badd03ec
- SHA1
  
  3d3dba10a7b40717d5417c69e8ef877e9e020e5b
- SHA256
  
  585994f293d32b4ec6e4dc54d1070be1d354cc8d664e093e04f803668a5dd7eb
- SHA512
  
  5e28b04d1af7dd44425c38ca6d44ccb7070ba5e19023762012f40e5bfc844d9814faec5af50dd284ffda0077be8fa00f8a23fd08c7bc692639f4c56e5d126be3
- SSDEEP
  
  49152:zgqKIXz0IxxiXIHLyolt7queAFJX4PxYL:zzXxqIHL5t7bRIE
Score

10^/10

quasar office04 spyware trojan
- Quasar RAT
  Quasar is an open source Remote Access Tool.
  trojan spyware quasar
- Quasar family
  quasar
- Quasar payload
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE
behavioral1 behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

Scheduled Task

Persistence

Scheduled Task/Job

Scheduled Task

Privilege Escalation

Scheduled Task/Job

Scheduled Task

Defense Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks

static1

behavioral1

quasaroffice04spywaretrojan

behavioral2

quasaroffice04spywaretrojan

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