quasar | 3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7

Analysis

max time kernel
128s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30/11/2024, 12:11

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General

Target
3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7.exe
Size 348KB
Sample241130-pcltestlbs
SHA256 3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7
MD5 f07bada4320fae092a7353f47b4e3183
SHA1 046b3e26e91f8c261b2c4de34831a4bbeaf7fab7
SHA512 78ba95fbdea7c40bef0040fad1ff002ecd2f4ff4c234259c3b54f4f355ac4d391ecb406a6042b445950ecf2f2caab56a92bbe4678fb1bcc63ad83b7483d6dc32
SSDEEP 6144:VjNHXf500MPTrfOfVPfVdANHibPkBZDlr0ALSGxG:Zd50tr1NPrr0ALSGxG
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quasar office04 discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

192.168.0.100:4782

Mutex

QSR_MUTEX_hesMVzHRGDZjvsZhI7

Attributes

encryption_key
F2l1q8bKCz0sFJakXt5c
install_name
vapev4.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Windows defender application
subdirectory
niger

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/2780-1-0x0000000000680000-0x00000000006DE000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023cbd-10.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2948	vapev4.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
8	ip-api.com

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vapev4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
4872	schtasks.exe
1060	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2780	3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7.exe
Token: SeDebugPrivilege	2948	vapev4.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 4872	2780	3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7.exe	85
PID 2780 wrote to memory of 4872	2780	3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7.exe	85
PID 2780 wrote to memory of 4872	2780	3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7.exe	85
PID 2780 wrote to memory of 2948	2780	3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7.exe	87
PID 2780 wrote to memory of 2948	2780	3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7.exe	87
PID 2780 wrote to memory of 2948	2780	3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7.exe	87
PID 2948 wrote to memory of 1060	2948	vapev4.exe	88
PID 2948 wrote to memory of 1060	2948	vapev4.exe	88
PID 2948 wrote to memory of 1060	2948	vapev4.exe	88

C:\Users\Admin\AppData\Local\Temp\3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7.exe
"C:\Users\Admin\AppData\Local\Temp\3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2780
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "Windows defender application" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7.exe" /rl HIGHEST /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4872
- C:\Users\Admin\AppData\Roaming\niger\vapev4.exe
  "C:\Users\Admin\AppData\Roaming\niger\vapev4.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2948
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Windows defender application" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\niger\vapev4.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1060

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

vapev4.exe

Path C:\Users\Admin\AppData\Roaming\niger\vapev4.exe
Size 348KB
SHA256 3c3b47e05f6960d1fdf233949ba2881dd32341ea84240ce3e9b59f0d29ec9fa7
MD5 f07bada4320fae092a7353f47b4e3183
SHA1 046b3e26e91f8c261b2c4de34831a4bbeaf7fab7
SHA512 78ba95fbdea7c40bef0040fad1ff002ecd2f4ff4c234259c3b54f4f355ac4d391ecb406a6042b445950ecf2f2caab56a92bbe4678fb1bcc63ad83b7483d6dc32
SSDEEP 6144:VjNHXf500MPTrfOfVPfVdANHibPkBZDlr0ALSGxG:Zd50tr1NPrr0ALSGxG
MD5 SHA1 SHA512 SSDEEP

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memory/2780-6-0x0000000005E00000-0x0000000005E12000-memory.dmp

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memory/2780-2-0x0000000005750000-0x0000000005CF4000-memory.dmp

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memory/2780-3-0x00000000051A0000-0x0000000005232000-memory.dmp

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memory/2780-4-0x00000000746C0000-0x0000000074E70000-memory.dmp

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memory/2780-5-0x0000000005120000-0x0000000005186000-memory.dmp

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memory/2780-0-0x00000000746CE000-0x00000000746CF000-memory.dmp

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memory/2780-7-0x0000000006340000-0x000000000637C000-memory.dmp

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memory/2780-1-0x0000000000680000-0x00000000006DE000-memory.dmp

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memory/2780-14-0x00000000746C0000-0x0000000074E70000-memory.dmp

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memory/2948-13-0x00000000746C0000-0x0000000074E70000-memory.dmp

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memory/2948-15-0x00000000746C0000-0x0000000074E70000-memory.dmp

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memory/2948-16-0x00000000746C0000-0x0000000074E70000-memory.dmp

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memory/2948-17-0x00000000069C0000-0x00000000069CA000-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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