quasar | 9d07e30f2a7238a495be924fa99761dd7e0dd300ec310e7d2d457ad7e6959b36

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-01-2025 03:47

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General

Target

9d07e30f2a7238a495be924fa99761dd7e0dd300ec310e7d2d457ad7e6959b36.exe
Size

3.1MB
MD5

be32c281194c0a859cca202a418a16a3
SHA1

e2c3885c8bc9b24b492f68a2c69ebf0c488abebc
SHA256

9d07e30f2a7238a495be924fa99761dd7e0dd300ec310e7d2d457ad7e6959b36
SHA512

541266a8f6b23b74d40c9d2656adb963c92ed5f8f2f239aa472649958f934f29a37afd42dfe27e9dfc2991c529dc949bffb6766223593c9ff7418778ad9bd36f
SSDEEP

49152:HvnlL26AaNeWgPhlmVqvMQ7XSKKzDKkCWZLoGAVATHHB72eh2NT:HvlL26AaNeWgPhlmVqkQ7XSKKzDjp

Score

10^/10

quasar driver host spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Driver Host

VisoXC-59263.portmap.host:59263

Mutex

80b8889c-1e9f-4330-a95e-a3d9faf3bfc4

Attributes

encryption_key
C1589EF424F77018CD488E8307C8C1DF199C8A42
install_name
driverhost32.exe
log_directory
Driver Logs
reconnect_delay
3000
startup_key
driverhost32
subdirectory
Driver Host

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/2116-1-0x0000000000030000-0x0000000000354000-memory.dmp	family_quasar
behavioral2/files/0x000a000000023b81-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1744	driverhost32.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
2108	schtasks.exe
4312	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2116	9d07e30f2a7238a495be924fa99761dd7e0dd300ec310e7d2d457ad7e6959b36.exe
Token: SeDebugPrivilege	1744	driverhost32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1744	driverhost32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 2108	2116	9d07e30f2a7238a495be924fa99761dd7e0dd300ec310e7d2d457ad7e6959b36.exe	82
PID 2116 wrote to memory of 2108	2116	9d07e30f2a7238a495be924fa99761dd7e0dd300ec310e7d2d457ad7e6959b36.exe	82
PID 2116 wrote to memory of 1744	2116	9d07e30f2a7238a495be924fa99761dd7e0dd300ec310e7d2d457ad7e6959b36.exe	84
PID 2116 wrote to memory of 1744	2116	9d07e30f2a7238a495be924fa99761dd7e0dd300ec310e7d2d457ad7e6959b36.exe	84
PID 1744 wrote to memory of 4312	1744	driverhost32.exe	85
PID 1744 wrote to memory of 4312	1744	driverhost32.exe	85

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\9d07e30f2a7238a495be924fa99761dd7e0dd300ec310e7d2d457ad7e6959b36.exe
"C:\Users\Admin\AppData\Local\Temp\9d07e30f2a7238a495be924fa99761dd7e0dd300ec310e7d2d457ad7e6959b36.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "driverhost32" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Driver Host\driverhost32.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2108
- C:\Users\Admin\AppData\Roaming\Driver Host\driverhost32.exe
  "C:\Users\Admin\AppData\Roaming\Driver Host\driverhost32.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1744
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "driverhost32" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Driver Host\driverhost32.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4312

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\Driver Host\driverhost32.exe

Filesize
3.1MB

MD5
be32c281194c0a859cca202a418a16a3

SHA1
e2c3885c8bc9b24b492f68a2c69ebf0c488abebc

SHA256
9d07e30f2a7238a495be924fa99761dd7e0dd300ec310e7d2d457ad7e6959b36

SHA512
541266a8f6b23b74d40c9d2656adb963c92ed5f8f2f239aa472649958f934f29a37afd42dfe27e9dfc2991c529dc949bffb6766223593c9ff7418778ad9bd36f

Download Submit
memory/1744-9-0x00007FF929F60000-0x00007FF92AA21000-memory.dmp

Filesize
10.8MB

Download
memory/1744-10-0x00007FF929F60000-0x00007FF92AA21000-memory.dmp

Filesize
10.8MB

Download
memory/1744-11-0x000000001C980000-0x000000001C9D0000-memory.dmp

Filesize
320KB

Download
memory/1744-12-0x000000001CA90000-0x000000001CB42000-memory.dmp

Filesize
712KB

Download
memory/1744-13-0x00007FF929F60000-0x00007FF92AA21000-memory.dmp

Filesize
10.8MB

Download
memory/2116-0-0x00007FF929F63000-0x00007FF929F65000-memory.dmp

Filesize
8KB

Download
memory/2116-1-0x0000000000030000-0x0000000000354000-memory.dmp

Filesize
3.1MB

Download
memory/2116-2-0x00007FF929F60000-0x00007FF92AA21000-memory.dmp

Filesize
10.8MB

Download
memory/2116-8-0x00007FF929F60000-0x00007FF92AA21000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads