quasar | abcda524c02f9381d8d43f9ec0079d854db821d77f45e88f50606f46871f81d6

General

Target

Uni.exe
Size

409KB
MD5

4c2bb0618a6eda615c8001d5a7ccd6c0
SHA1

c88d2c8bfc5906a5cfef78893d1132edcffd71f0
SHA256

abcda524c02f9381d8d43f9ec0079d854db821d77f45e88f50606f46871f81d6
SHA512

6abe53339656a023e2a0547f1c2249789c33091d67a21f2e689c6411dc5357e34ec3c65634b6f6955a5023d20803f7c746b13f574bcd84b008abb4a97ea61027
SSDEEP

12288:rpg6M1i1v6q1ak/e7xlX7nnvGAwhJLJO:lxqiii6xlLvGjhO

Score

10^/10

quasar seroxen spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

SeroXen

C2

tue-jake.gl.at.ply.gg:29058

Mutex

$Sxr-xPAuDxLNyBmZ7S2WLJ

Attributes

encryption_key
Pw78RUs175dFrKD7lMwH
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

Processes:

resource	yara_rule
behavioral1/memory/1808-1-0x0000000000320000-0x000000000038C000-memory.dmp	family_quasar
\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar
behavioral1/memory/2716-10-0x00000000010F0000-0x000000000115C000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

2716 Client.exe
Loads dropped DLL 1 IoCs

Processes:

Uni.exe

pid process

1808 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.

Processes:

flow ioc

2 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

Processes:

schtasks.exeschtasks.exeSCHTASKS.exe

pid process

2508 schtasks.exe
2676 schtasks.exe
2324 SCHTASKS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Uni.exeClient.exe

description pid process

Token: SeDebugPrivilege 1808 Uni.exe
Token: SeDebugPrivilege 2716 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

2716 Client.exe

pid	process
2716	Client.exe

pid	process
1808	Uni.exe

flow	ioc
2	ip-api.com

pid	process
2508	schtasks.exe
2676	schtasks.exe
2324	SCHTASKS.exe

description	pid	process
Token: SeDebugPrivilege	1808	Uni.exe
Token: SeDebugPrivilege	2716	Client.exe

pid	process
2716	Client.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

Uni.exeClient.exe

description	pid	process	target process
PID 1808 wrote to memory of 2508	1808	Uni.exe	schtasks.exe
PID 1808 wrote to memory of 2508	1808	Uni.exe	schtasks.exe
PID 1808 wrote to memory of 2508	1808	Uni.exe	schtasks.exe
PID 1808 wrote to memory of 2508	1808	Uni.exe	schtasks.exe
PID 1808 wrote to memory of 2716	1808	Uni.exe	Client.exe
PID 1808 wrote to memory of 2716	1808	Uni.exe	Client.exe
PID 1808 wrote to memory of 2716	1808	Uni.exe	Client.exe
PID 1808 wrote to memory of 2716	1808	Uni.exe	Client.exe
PID 1808 wrote to memory of 2716	1808	Uni.exe	Client.exe
PID 1808 wrote to memory of 2716	1808	Uni.exe	Client.exe
PID 1808 wrote to memory of 2716	1808	Uni.exe	Client.exe
PID 2716 wrote to memory of 2676	2716	Client.exe	schtasks.exe
PID 2716 wrote to memory of 2676	2716	Client.exe	schtasks.exe
PID 2716 wrote to memory of 2676	2716	Client.exe	schtasks.exe
PID 2716 wrote to memory of 2676	2716	Client.exe	schtasks.exe
PID 1808 wrote to memory of 2324	1808	Uni.exe	SCHTASKS.exe
PID 1808 wrote to memory of 2324	1808	Uni.exe	SCHTASKS.exe
PID 1808 wrote to memory of 2324	1808	Uni.exe	SCHTASKS.exe
PID 1808 wrote to memory of 2324	1808	Uni.exe	SCHTASKS.exe

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:1808

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Uni.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:2508

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:2716

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:2676

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⤵
- Creates scheduled task(s)
PID:2324

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

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
4c2bb0618a6eda615c8001d5a7ccd6c0

SHA1
c88d2c8bfc5906a5cfef78893d1132edcffd71f0

SHA256
abcda524c02f9381d8d43f9ec0079d854db821d77f45e88f50606f46871f81d6

SHA512
6abe53339656a023e2a0547f1c2249789c33091d67a21f2e689c6411dc5357e34ec3c65634b6f6955a5023d20803f7c746b13f574bcd84b008abb4a97ea61027

Download Submit
memory/1808-0-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/1808-1-0x0000000000320000-0x000000000038C000-memory.dmp

Filesize
432KB

Download
memory/1808-2-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/1808-14-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2716-10-0x00000000010F0000-0x000000000115C000-memory.dmp

Filesize
432KB

Download
memory/2716-11-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2716-12-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2716-15-0x0000000074610000-0x0000000074CFE000-memory.dmp

Filesize
6.9MB

Download
memory/2716-16-0x0000000074610000-0x0000000074CFE000-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