quasar | 51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246

General

Target

Uni.exe
Size

409KB
MD5

b70fdac25a99501e3cae11f1b775249e
SHA1

3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71
SHA256

51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246
SHA512

43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44
SSDEEP

12288:gpbJjGut6AoE3hVVdFaC/eZPTMTDlpgfJCKuMsVs:oVaurMLcDlpRKai

Score

10^/10

quasar seroxen spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

SeroXen

C2

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

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

Mutex

$Sxr-rpL8EItHN3pqIQQVy2

Attributes

encryption_key
Lme7VBS3l58VwLM69PNM
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 3 IoCs

resource	yara_rule
behavioral1/memory/2312-1-0x0000000000D10000-0x0000000000D7C000-memory.dmp	family_quasar
behavioral1/files/0x000900000001659d-5.dat	family_quasar
behavioral1/memory/2628-11-0x0000000000150000-0x00000000001BC000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2628	Client.exe

Loads dropped DLL 1 IoCs

pid	Process
2312	Uni.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
2	ip-api.com

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2188	schtasks.exe
2892	schtasks.exe
2688	SCHTASKS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2312	Uni.exe
Token: SeDebugPrivilege	2628	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2628	Client.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2312 wrote to memory of 2188	2312	Uni.exe	31
PID 2312 wrote to memory of 2188	2312	Uni.exe	31
PID 2312 wrote to memory of 2188	2312	Uni.exe	31
PID 2312 wrote to memory of 2188	2312	Uni.exe	31
PID 2312 wrote to memory of 2628	2312	Uni.exe	33
PID 2312 wrote to memory of 2628	2312	Uni.exe	33
PID 2312 wrote to memory of 2628	2312	Uni.exe	33
PID 2312 wrote to memory of 2628	2312	Uni.exe	33
PID 2312 wrote to memory of 2628	2312	Uni.exe	33
PID 2312 wrote to memory of 2628	2312	Uni.exe	33
PID 2312 wrote to memory of 2628	2312	Uni.exe	33
PID 2628 wrote to memory of 2892	2628	Client.exe	34
PID 2628 wrote to memory of 2892	2628	Client.exe	34
PID 2628 wrote to memory of 2892	2628	Client.exe	34
PID 2628 wrote to memory of 2892	2628	Client.exe	34
PID 2312 wrote to memory of 2688	2312	Uni.exe	36
PID 2312 wrote to memory of 2688	2312	Uni.exe	36
PID 2312 wrote to memory of 2688	2312	Uni.exe	36
PID 2312 wrote to memory of 2688	2312	Uni.exe	36

C:\Users\Admin\AppData\Local\Temp\Uni.exe
"C:\Users\Admin\AppData\Local\Temp\Uni.exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Uni.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2188
- 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:2628
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2892
- C:\Windows\SysWOW64\SCHTASKS.exe
  "SCHTASKS.exe" /create /tn "$77Uni.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\Uni.exe'" /sc onlogon /rl HIGHEST
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\SubDir\Client.exe

Filesize
409KB

MD5
b70fdac25a99501e3cae11f1b775249e

SHA1
3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71

SHA256
51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246

SHA512
43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44

Download Submit
memory/2312-0-0x00000000743DE000-0x00000000743DF000-memory.dmp

Filesize
4KB

Download
memory/2312-1-0x0000000000D10000-0x0000000000D7C000-memory.dmp

Filesize
432KB

Download
memory/2312-2-0x00000000743D0000-0x0000000074ABE000-memory.dmp

Filesize
6.9MB

Download
memory/2312-14-0x00000000743D0000-0x0000000074ABE000-memory.dmp

Filesize
6.9MB

Download
memory/2628-10-0x00000000743D0000-0x0000000074ABE000-memory.dmp

Filesize
6.9MB

Download
memory/2628-11-0x0000000000150000-0x00000000001BC000-memory.dmp

Filesize
432KB

Download
memory/2628-12-0x00000000743D0000-0x0000000074ABE000-memory.dmp

Filesize
6.9MB

Download
memory/2628-15-0x00000000743D0000-0x0000000074ABE000-memory.dmp

Filesize
6.9MB

Download
memory/2628-16-0x00000000743D0000-0x0000000074ABE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads