quasar | 10478f357fce33e3022657700b14d357f727880a2c9f12802f244054a94bfbfd

Analysis

max time kernel
1798s
max time network
1810s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
08/07/2024, 03:15

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General

Target
Artic-Tools-main/setup 2.exe
Size 3.1MB
Sample240708-dsawbasbnh
SHA256 0ad5d74f21bcda02fbc66aa850d1bbd71a0f3413da9177e64e92aa0446da37ae
MD5 7f8ff829bec8607b636f5348de6a73de
SHA1 8c3825135c083524f4cde0a7f615bbd4197b472f
SHA512 876f3305afa0245a9bfade78edf9486d42cd0cd2d23a5fbb88cdbf54896a3567e8b087b3adcde2ccc61edc2826121f1df2a504911995bf3718e8f5574075111a
SSDEEP 49152:DvWI22SsaNYfdPBldt698dBcjH7bRJ6QbR3LoGde4THHB72eh2NT:Dv722SsaNYfdPBldt6+dBcjH7bRJ6q
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.0.220:4782

Mutex

c6c343f8-8382-4a66-9b65-94ac25db16e4

Attributes

encryption_key
E93DA55A12FC3EE59E1A5D2106636D62B1953227
install_name
setup_2.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 payload 2 IoCs

resource	yara_rule
behavioral3/memory/1596-1-0x0000000000FE0000-0x0000000001304000-memory.dmp	family_quasar
behavioral3/files/0x000800000001ac15-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3996	setup_2.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
4368	schtasks.exe
4672	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1596	setup 2.exe
Token: SeDebugPrivilege	3996	setup_2.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3996	setup_2.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 4368	1596	setup 2.exe	72
PID 1596 wrote to memory of 4368	1596	setup 2.exe	72
PID 1596 wrote to memory of 3996	1596	setup 2.exe	74
PID 1596 wrote to memory of 3996	1596	setup 2.exe	74
PID 3996 wrote to memory of 4672	3996	setup_2.exe	75
PID 3996 wrote to memory of 4672	3996	setup_2.exe	75

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\Artic-Tools-main\setup 2.exe
"C:\Users\Admin\AppData\Local\Temp\Artic-Tools-main\setup 2.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\setup_2.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4368
- C:\Users\Admin\AppData\Roaming\SubDir\setup_2.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\setup_2.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3996
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\setup_2.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4672

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

setup_2.exe

Path C:\Users\Admin\AppData\Roaming\SubDir\setup_2.exe
Size 3.1MB
SHA256 0ad5d74f21bcda02fbc66aa850d1bbd71a0f3413da9177e64e92aa0446da37ae
MD5 7f8ff829bec8607b636f5348de6a73de
SHA1 8c3825135c083524f4cde0a7f615bbd4197b472f
SHA512 876f3305afa0245a9bfade78edf9486d42cd0cd2d23a5fbb88cdbf54896a3567e8b087b3adcde2ccc61edc2826121f1df2a504911995bf3718e8f5574075111a
SSDEEP 49152:DvWI22SsaNYfdPBldt698dBcjH7bRJ6QbR3LoGde4THHB72eh2NT:Dv722SsaNYfdPBldt6+dBcjH7bRJ6q
MD5 SHA1 SHA512 SSDEEP

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memory/1596-0-0x00007FFAC0A40000-0x00007FFAC0C1B000-memory.dmp

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memory/1596-1-0x0000000000FE0000-0x0000000001304000-memory.dmp

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memory/1596-2-0x00007FFAC0A40000-0x00007FFAC0C1B000-memory.dmp

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memory/1596-9-0x00007FFAC0A40000-0x00007FFAC0C1B000-memory.dmp

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memory/3996-8-0x00007FFAC0A40000-0x00007FFAC0C1B000-memory.dmp

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memory/3996-10-0x00007FFAC0A40000-0x00007FFAC0C1B000-memory.dmp

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memory/3996-11-0x000000001B820000-0x000000001B870000-memory.dmp

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memory/3996-12-0x000000001C000000-0x000000001C0B2000-memory.dmp

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memory/3996-13-0x00007FFAC0A40000-0x00007FFAC0C1B000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads