quasar | 018f75f18b882044109f250f19da654c0b3bd90430b318fcb03348908a189aae

Analysis

max time kernel
237s
max time network
290s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
01/06/2024, 07:31

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General

Target
loadervmp.exe
Size 409KB
Sample240601-jcsn3seh43
SHA256 018f75f18b882044109f250f19da654c0b3bd90430b318fcb03348908a189aae
MD5 14f056491baaed04872533c2d9648d46
SHA1 c48b08d0e9064f2d060f19474bb54cf3c5a25586
SHA512 c109b1a9cf40049f8958beab9cff112cb326dd719c56f6dedafda4cf3a64d3faae3912f34cbcc1ee203a0316e40b8f7016624f05a1ad6c93bbaa0bdc9dc79b08
SSDEEP 6144:rMvlpdRJjGq/ldSTTIgiGwo9W0MFMJyb7+Ye0SmxalGcqwL6Ir4H9VI:EpbJjGu/STTIwJWIJgG0jFCRsH9VI
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quasar seroxen spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

SeroXen

panel-slave.gl.at.ply.gg:57059
panel-slave.gl.at.ply.gg:27892

Mutex

$Sxr-rpL8EItHN3pqIQQVy2

Attributes

encryption_key
ZJpQQkxTrak9Zs9tUOQW
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
SeroXen
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/4792-1-0x0000000000C70000-0x0000000000CDC000-memory.dmp	family_quasar
behavioral2/files/0x000a000000023374-11.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1036	Client.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
3	ip-api.com

Creates scheduled task(s) 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
4544	schtasks.exe
5056	SCHTASKS.exe
4568	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4792	loadervmp.exe
Token: SeDebugPrivilege	1036	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1036	Client.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4792 wrote to memory of 4544	4792	loadervmp.exe	85
PID 4792 wrote to memory of 4544	4792	loadervmp.exe	85
PID 4792 wrote to memory of 4544	4792	loadervmp.exe	85
PID 4792 wrote to memory of 1036	4792	loadervmp.exe	87
PID 4792 wrote to memory of 1036	4792	loadervmp.exe	87
PID 4792 wrote to memory of 1036	4792	loadervmp.exe	87
PID 4792 wrote to memory of 5056	4792	loadervmp.exe	88
PID 4792 wrote to memory of 5056	4792	loadervmp.exe	88
PID 4792 wrote to memory of 5056	4792	loadervmp.exe	88
PID 1036 wrote to memory of 4568	1036	Client.exe	90
PID 1036 wrote to memory of 4568	1036	Client.exe	90
PID 1036 wrote to memory of 4568	1036	Client.exe	90

C:\Users\Admin\AppData\Local\Temp\loadervmp.exe
"C:\Users\Admin\AppData\Local\Temp\loadervmp.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\loadervmp.exe" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:4544
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1036
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:4568
- C:\Windows\SysWOW64\SCHTASKS.exe
  "SCHTASKS.exe" /create /tn "$77loadervmp.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\loadervmp.exe'" /sc onlogon /rl HIGHEST
  2⤵
  - Creates scheduled task(s)
  PID:5056

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Client.exe

Path C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
Size 409KB
SHA256 018f75f18b882044109f250f19da654c0b3bd90430b318fcb03348908a189aae
MD5 14f056491baaed04872533c2d9648d46
SHA1 c48b08d0e9064f2d060f19474bb54cf3c5a25586
SHA512 c109b1a9cf40049f8958beab9cff112cb326dd719c56f6dedafda4cf3a64d3faae3912f34cbcc1ee203a0316e40b8f7016624f05a1ad6c93bbaa0bdc9dc79b08
SSDEEP 6144:rMvlpdRJjGq/ldSTTIgiGwo9W0MFMJyb7+Ye0SmxalGcqwL6Ir4H9VI:EpbJjGu/STTIwJWIJgG0jFCRsH9VI
MD5 SHA1 SHA512 SSDEEP

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memory/1036-20-0x0000000074530000-0x0000000074CE0000-memory.dmp

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memory/1036-19-0x0000000074530000-0x0000000074CE0000-memory.dmp

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memory/1036-18-0x0000000006910000-0x000000000691A000-memory.dmp

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memory/1036-14-0x0000000074530000-0x0000000074CE0000-memory.dmp

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memory/1036-13-0x0000000074530000-0x0000000074CE0000-memory.dmp

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memory/4792-3-0x0000000005740000-0x00000000057D2000-memory.dmp

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memory/4792-7-0x0000000006930000-0x000000000696C000-memory.dmp

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memory/4792-6-0x0000000005D40000-0x0000000005D52000-memory.dmp

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memory/4792-5-0x0000000005810000-0x0000000005876000-memory.dmp

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memory/4792-4-0x0000000074530000-0x0000000074CE0000-memory.dmp

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memory/4792-16-0x0000000074530000-0x0000000074CE0000-memory.dmp

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memory/4792-0-0x000000007453E000-0x000000007453F000-memory.dmp

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memory/4792-2-0x0000000005DC0000-0x0000000006364000-memory.dmp

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memory/4792-1-0x0000000000C70000-0x0000000000CDC000-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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