quasar | 6da2005775980d44d0a6f9d8f12d7394e8d81abf96f444a6c4da54c2376430a0

General

Target

Uni.exe
Size

409KB
MD5

7544e8e688461810abd5387160692c95
SHA1

bb41e11803d0da2fb7f6e2068220ddd3faf347c7
SHA256

6da2005775980d44d0a6f9d8f12d7394e8d81abf96f444a6c4da54c2376430a0
SHA512

09ffe73cc108762af47e68fb9f72ab37051cda10aec048cd9cb86c65c68696622bd7e24c12b0c07ebc2e8a0620865fc9a35b2ef34d48c3d8522d57cd672ec287
SSDEEP

6144:MMfPp5S6M1Xy0gmfnF8V0dguFJSSvbaU01T/yUhAd5GbdQNJ:Bpg6M1i9mfnFUEgctoLILGbdQf

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

Mutex

$Sxr-rpL8EItHN3pqIQQVy2

Attributes

encryption_key
p81Z0Zy4AcToBvsDk4Li
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/2228-1-0x00000000011E0000-0x000000000124C000-memory.dmp	family_quasar
behavioral1/files/0x0039000000015cc7-5.dat	family_quasar
behavioral1/memory/2748-10-0x0000000000320000-0x000000000038C000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2748	Client.exe

Loads dropped DLL 1 IoCs

pid	Process
2228	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

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
2716	schtasks.exe
2756	SCHTASKS.exe
1316	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2228	Uni.exe
Token: SeDebugPrivilege	2748	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2748	Client.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 2716	2228	Uni.exe	29
PID 2228 wrote to memory of 2716	2228	Uni.exe	29
PID 2228 wrote to memory of 2716	2228	Uni.exe	29
PID 2228 wrote to memory of 2716	2228	Uni.exe	29
PID 2228 wrote to memory of 2748	2228	Uni.exe	31
PID 2228 wrote to memory of 2748	2228	Uni.exe	31
PID 2228 wrote to memory of 2748	2228	Uni.exe	31
PID 2228 wrote to memory of 2748	2228	Uni.exe	31
PID 2228 wrote to memory of 2748	2228	Uni.exe	31
PID 2228 wrote to memory of 2748	2228	Uni.exe	31
PID 2228 wrote to memory of 2748	2228	Uni.exe	31
PID 2228 wrote to memory of 2756	2228	Uni.exe	32
PID 2228 wrote to memory of 2756	2228	Uni.exe	32
PID 2228 wrote to memory of 2756	2228	Uni.exe	32
PID 2228 wrote to memory of 2756	2228	Uni.exe	32
PID 2748 wrote to memory of 1316	2748	Client.exe	34
PID 2748 wrote to memory of 1316	2748	Client.exe	34
PID 2748 wrote to memory of 1316	2748	Client.exe	34
PID 2748 wrote to memory of 1316	2748	Client.exe	34

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:2228
- 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:2716
- 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:2748
- - 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:1316
- 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:2756

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
7544e8e688461810abd5387160692c95

SHA1
bb41e11803d0da2fb7f6e2068220ddd3faf347c7

SHA256
6da2005775980d44d0a6f9d8f12d7394e8d81abf96f444a6c4da54c2376430a0

SHA512
09ffe73cc108762af47e68fb9f72ab37051cda10aec048cd9cb86c65c68696622bd7e24c12b0c07ebc2e8a0620865fc9a35b2ef34d48c3d8522d57cd672ec287

Download Submit
memory/2228-0-0x000000007456E000-0x000000007456F000-memory.dmp

Filesize
4KB

Download
memory/2228-1-0x00000000011E0000-0x000000000124C000-memory.dmp

Filesize
432KB

Download
memory/2228-2-0x0000000074560000-0x0000000074C4E000-memory.dmp

Filesize
6.9MB

Download
memory/2228-13-0x0000000074560000-0x0000000074C4E000-memory.dmp

Filesize
6.9MB

Download
memory/2748-11-0x0000000074560000-0x0000000074C4E000-memory.dmp

Filesize
6.9MB

Download
memory/2748-10-0x0000000000320000-0x000000000038C000-memory.dmp

Filesize
432KB

Download
memory/2748-12-0x0000000074560000-0x0000000074C4E000-memory.dmp

Filesize
6.9MB

Download
memory/2748-15-0x0000000074560000-0x0000000074C4E000-memory.dmp

Filesize
6.9MB

Download
memory/2748-16-0x0000000074560000-0x0000000074C4E000-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