quasar | 04f86ef6a2870bcaff958187d1bbf7281e6c8c1c1f2fbefddc11e3a379e4f9b9

General

Target

Uni.exe
Size

409KB
MD5

16e4226eddebe2148b46353c351ec570
SHA1

5879aab64c4d4c086f24807f85c3f1bec657db9c
SHA256

04f86ef6a2870bcaff958187d1bbf7281e6c8c1c1f2fbefddc11e3a379e4f9b9
SHA512

7fa89b0aee061fca53534c7e38dfa873235095e32f64e87d7a8457e765f804d8f2408e90b90a484ea3e9c18d1110a5667de9aab14d9d9e22911433e9da4cfd38
SSDEEP

6144:cMfPp5S6M1Xy0vjzilQA9QU9sX0bx4UmWOQ6rhxODbfFOqb:Rpg6M1i+jzilQoAVUmjJtx2fF5b

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-NCZpRTaGL620kkY20c

Attributes

encryption_key
0CaeSao9jSngJXRQGaoy
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

Processes:

resource	yara_rule
behavioral1/memory/2400-1-0x0000000000E50000-0x0000000000EBC000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

5064 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.

Processes:

flow ioc

1 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

1056 schtasks.exe
4656 schtasks.exe
2740 SCHTASKS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Uni.exeClient.exe

description pid process

Token: SeDebugPrivilege 2400 Uni.exe
Token: SeDebugPrivilege 5064 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

5064 Client.exe

pid	process
5064	Client.exe

flow	ioc
1	ip-api.com

pid	process
1056	schtasks.exe
4656	schtasks.exe
2740	SCHTASKS.exe

description	pid	process
Token: SeDebugPrivilege	2400	Uni.exe
Token: SeDebugPrivilege	5064	Client.exe

pid	process
5064	Client.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Uni.exeClient.exe

description	pid	process	target process
PID 2400 wrote to memory of 1056	2400	Uni.exe	schtasks.exe
PID 2400 wrote to memory of 1056	2400	Uni.exe	schtasks.exe
PID 2400 wrote to memory of 1056	2400	Uni.exe	schtasks.exe
PID 2400 wrote to memory of 5064	2400	Uni.exe	Client.exe
PID 2400 wrote to memory of 5064	2400	Uni.exe	Client.exe
PID 2400 wrote to memory of 5064	2400	Uni.exe	Client.exe
PID 5064 wrote to memory of 4656	5064	Client.exe	schtasks.exe
PID 5064 wrote to memory of 4656	5064	Client.exe	schtasks.exe
PID 5064 wrote to memory of 4656	5064	Client.exe	schtasks.exe
PID 2400 wrote to memory of 2740	2400	Uni.exe	SCHTASKS.exe
PID 2400 wrote to memory of 2740	2400	Uni.exe	SCHTASKS.exe
PID 2400 wrote to memory of 2740	2400	Uni.exe	SCHTASKS.exe

C:\Users\Admin\AppData\Local\Temp\Uni.exe
"C:\Users\Admin\AppData\Local\Temp\Uni.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2400

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:1056

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:5064

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:4656

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:2740

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

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

Filesize
409KB

MD5
16e4226eddebe2148b46353c351ec570

SHA1
5879aab64c4d4c086f24807f85c3f1bec657db9c

SHA256
04f86ef6a2870bcaff958187d1bbf7281e6c8c1c1f2fbefddc11e3a379e4f9b9

SHA512
7fa89b0aee061fca53534c7e38dfa873235095e32f64e87d7a8457e765f804d8f2408e90b90a484ea3e9c18d1110a5667de9aab14d9d9e22911433e9da4cfd38

Download Submit
memory/2400-6-0x00000000067D0000-0x00000000067E2000-memory.dmp

Filesize
72KB

Download
memory/2400-2-0x0000000005E70000-0x0000000006416000-memory.dmp

Filesize
5.6MB

Download
memory/2400-3-0x0000000005990000-0x0000000005A22000-memory.dmp

Filesize
584KB

Download
memory/2400-4-0x0000000074740000-0x0000000074EF1000-memory.dmp

Filesize
7.7MB

Download
memory/2400-5-0x0000000005A80000-0x0000000005AE6000-memory.dmp

Filesize
408KB

Download
memory/2400-0-0x000000007474E000-0x000000007474F000-memory.dmp

Filesize
4KB

Download
memory/2400-7-0x0000000006D20000-0x0000000006D5C000-memory.dmp

Filesize
240KB

Download
memory/2400-1-0x0000000000E50000-0x0000000000EBC000-memory.dmp

Filesize
432KB

Download
memory/2400-18-0x0000000074740000-0x0000000074EF1000-memory.dmp

Filesize
7.7MB

Download
memory/5064-13-0x0000000074740000-0x0000000074EF1000-memory.dmp

Filesize
7.7MB

Download
memory/5064-14-0x0000000074740000-0x0000000074EF1000-memory.dmp

Filesize
7.7MB

Download
memory/5064-16-0x0000000006DB0000-0x0000000006DBA000-memory.dmp

Filesize
40KB

Download
memory/5064-19-0x0000000074740000-0x0000000074EF1000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads