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 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2336-1-0x0000000000220000-0x000000000028C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

4500 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

13 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

2572 schtasks.exe
3088 SCHTASKS.exe
556 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Uni.exeClient.exe

description pid process

Token: SeDebugPrivilege 2336 Uni.exe
Token: SeDebugPrivilege 4500 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

4500 Client.exe

pid	process
4500	Client.exe

flow	ioc
13	ip-api.com

pid	process
2572	schtasks.exe
3088	SCHTASKS.exe
556	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	2336	Uni.exe
Token: SeDebugPrivilege	4500	Client.exe

pid	process
4500	Client.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Uni.exeClient.exe

description	pid	process	target process
PID 2336 wrote to memory of 2572	2336	Uni.exe	schtasks.exe
PID 2336 wrote to memory of 2572	2336	Uni.exe	schtasks.exe
PID 2336 wrote to memory of 2572	2336	Uni.exe	schtasks.exe
PID 2336 wrote to memory of 4500	2336	Uni.exe	Client.exe
PID 2336 wrote to memory of 4500	2336	Uni.exe	Client.exe
PID 2336 wrote to memory of 4500	2336	Uni.exe	Client.exe
PID 2336 wrote to memory of 3088	2336	Uni.exe	SCHTASKS.exe
PID 2336 wrote to memory of 3088	2336	Uni.exe	SCHTASKS.exe
PID 2336 wrote to memory of 3088	2336	Uni.exe	SCHTASKS.exe
PID 4500 wrote to memory of 556	4500	Client.exe	schtasks.exe
PID 4500 wrote to memory of 556	4500	Client.exe	schtasks.exe
PID 4500 wrote to memory of 556	4500	Client.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:2336

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:2572

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:4500

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:556

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:3088

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3772,i,11746347647270949551,7786733067759450703,262144 --variations-seed-version --mojo-platform-channel-handle=4292 /prefetch:8
1⤵
PID:2308

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
7544e8e688461810abd5387160692c95

SHA1
bb41e11803d0da2fb7f6e2068220ddd3faf347c7

SHA256
6da2005775980d44d0a6f9d8f12d7394e8d81abf96f444a6c4da54c2376430a0

SHA512
09ffe73cc108762af47e68fb9f72ab37051cda10aec048cd9cb86c65c68696622bd7e24c12b0c07ebc2e8a0620865fc9a35b2ef34d48c3d8522d57cd672ec287

Download Submit
memory/2336-6-0x0000000005AB0000-0x0000000005AC2000-memory.dmp

Filesize
72KB

Download
memory/2336-1-0x0000000000220000-0x000000000028C000-memory.dmp

Filesize
432KB

Download
memory/2336-3-0x0000000004CA0000-0x0000000004D32000-memory.dmp

Filesize
584KB

Download
memory/2336-4-0x0000000074620000-0x0000000074DD0000-memory.dmp

Filesize
7.7MB

Download
memory/2336-5-0x0000000004D50000-0x0000000004DB6000-memory.dmp

Filesize
408KB

Download
memory/2336-0-0x000000007462E000-0x000000007462F000-memory.dmp

Filesize
4KB

Download
memory/2336-7-0x0000000005FF0000-0x000000000602C000-memory.dmp

Filesize
240KB

Download
memory/2336-2-0x00000000051A0000-0x0000000005744000-memory.dmp

Filesize
5.6MB

Download
memory/2336-16-0x0000000074620000-0x0000000074DD0000-memory.dmp

Filesize
7.7MB

Download
memory/4500-14-0x0000000074620000-0x0000000074DD0000-memory.dmp

Filesize
7.7MB

Download
memory/4500-13-0x0000000074620000-0x0000000074DD0000-memory.dmp

Filesize
7.7MB

Download
memory/4500-18-0x0000000006930000-0x000000000693A000-memory.dmp

Filesize
40KB

Download
memory/4500-19-0x0000000074620000-0x0000000074DD0000-memory.dmp

Filesize
7.7MB

Download
memory/4500-20-0x0000000074620000-0x0000000074DD0000-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