quasar | d4e8227cf61346d7264be4f1f184898cdf84c465e622e9683993d3dcf33c4945

Analysis

max time kernel
126s
max time network
136s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
07-12-2024 03:02

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General

Target

hrar.exe
Size

3.1MB
MD5

b6ff996e501652ecd561639bcf8c7b65
SHA1

d59eb31de4eb86fd1eb395f4e1c7fc52082c2fe6
SHA256

d4e8227cf61346d7264be4f1f184898cdf84c465e622e9683993d3dcf33c4945
SHA512

040ef39bc0206eccccc1b1a4af8cc46f64ed480333893ea4f5c55701ea50ca34d7c64acf7dcc08fde119cc636f9c2842715cb145b71054bccc8c42ec5fca545d
SSDEEP

49152:PvelL26AaNeWgPhlmVqvMQ7XSKcORJ6abR3LoGdl3THHB72eh2NT:PvOL26AaNeWgPhlmVqkQ7XSKcORJ60V

Score

10^/10

quasar roar spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

roar

fojeweb571-45302.portmap.host:45302

Mutex

55e529e2-c08e-4693-b5fc-9b2c7f622871

Attributes

encryption_key
B42CE86AEBA4D8818352F4D811EA7BBB472E229A
install_name
windows defender.exe
log_directory
Logs
reconnect_delay
3000
startup_key
discord
subdirectory
SubDir

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar family
quasar

Quasar payload 3 IoCs

resource	yara_rule
behavioral1/memory/1504-1-0x0000000000D80000-0x00000000010A4000-memory.dmp	family_quasar
behavioral1/files/0x0009000000016c5c-6.dat	family_quasar
behavioral1/memory/1564-10-0x00000000002E0000-0x0000000000604000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1564	windows defender.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
2164	schtasks.exe
2780	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1504	hrar.exe
Token: SeDebugPrivilege	1564	windows defender.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1564	windows defender.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 2164	1504	hrar.exe	30
PID 1504 wrote to memory of 2164	1504	hrar.exe	30
PID 1504 wrote to memory of 2164	1504	hrar.exe	30
PID 1504 wrote to memory of 1564	1504	hrar.exe	32
PID 1504 wrote to memory of 1564	1504	hrar.exe	32
PID 1504 wrote to memory of 1564	1504	hrar.exe	32
PID 1564 wrote to memory of 2780	1564	windows defender.exe	33
PID 1564 wrote to memory of 2780	1564	windows defender.exe	33
PID 1564 wrote to memory of 2780	1564	windows defender.exe	33

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\hrar.exe
"C:\Users\Admin\AppData\Local\Temp\hrar.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "discord" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\windows defender.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2164
- C:\Users\Admin\AppData\Roaming\SubDir\windows defender.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\windows defender.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1564
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "discord" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\windows defender.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2780

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\windows defender.exe

Filesize
3.1MB

MD5
b6ff996e501652ecd561639bcf8c7b65

SHA1
d59eb31de4eb86fd1eb395f4e1c7fc52082c2fe6

SHA256
d4e8227cf61346d7264be4f1f184898cdf84c465e622e9683993d3dcf33c4945

SHA512
040ef39bc0206eccccc1b1a4af8cc46f64ed480333893ea4f5c55701ea50ca34d7c64acf7dcc08fde119cc636f9c2842715cb145b71054bccc8c42ec5fca545d

Download Submit
memory/1504-0-0x000007FEF4E33000-0x000007FEF4E34000-memory.dmp

Filesize
4KB

Download
memory/1504-1-0x0000000000D80000-0x00000000010A4000-memory.dmp

Filesize
3.1MB

Download
memory/1504-2-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

Filesize
9.9MB

Download
memory/1504-8-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

Filesize
9.9MB

Download
memory/1564-9-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

Filesize
9.9MB

Download
memory/1564-10-0x00000000002E0000-0x0000000000604000-memory.dmp

Filesize
3.1MB

Download
memory/1564-11-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

Filesize
9.9MB

Download
memory/1564-12-0x000007FEF4E30000-0x000007FEF581C000-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