quasar | c4f4b783e9b152a00d5cac8b82d2ae0c74fa848aaa4a524dc5cb81b1576aaab5

General

Target

uni/Uni - Copy.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 3 IoCs
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Processes:

schtasks.exe

pid process

3892 schtasks.exe
13 ip-api.com
33 api.ipify.org

pid	process
3892	schtasks.exe
13	ip-api.com
33	api.ipify.org

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral12/memory/2348-1-0x00000000004D0000-0x000000000053C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 2 IoCs

Processes:

Client.exeqcBKJAG7B77d.exe

pid process

4416 Client.exe
540 qcBKJAG7B77d.exe
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

13 ip-api.com
33 api.ipify.org
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

3892 schtasks.exe
4460 SCHTASKS.exe
4588 schtasks.exe

pid	process
4416	Client.exe
540	qcBKJAG7B77d.exe

flow	ioc
13	ip-api.com
33	api.ipify.org

pid	process
3892	schtasks.exe
4460	SCHTASKS.exe
4588	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Uni - Copy.exeClient.exeAUDIODG.EXE

description	pid	process
Token: SeDebugPrivilege	2348	Uni - Copy.exe
Token: SeDebugPrivilege	4416	Client.exe
Token: 33	2760	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	2760	AUDIODG.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

Client.exeqcBKJAG7B77d.exePickerHost.exe

pid process

4416 Client.exe
540 qcBKJAG7B77d.exe
3840 PickerHost.exe

pid	process
4416	Client.exe
540	qcBKJAG7B77d.exe
3840	PickerHost.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Uni - Copy.exeClient.exe

description	pid	process	target process
PID 2348 wrote to memory of 3892	2348	Uni - Copy.exe	schtasks.exe
PID 2348 wrote to memory of 3892	2348	Uni - Copy.exe	schtasks.exe
PID 2348 wrote to memory of 3892	2348	Uni - Copy.exe	schtasks.exe
PID 2348 wrote to memory of 4416	2348	Uni - Copy.exe	Client.exe
PID 2348 wrote to memory of 4416	2348	Uni - Copy.exe	Client.exe
PID 2348 wrote to memory of 4416	2348	Uni - Copy.exe	Client.exe
PID 2348 wrote to memory of 4460	2348	Uni - Copy.exe	SCHTASKS.exe
PID 2348 wrote to memory of 4460	2348	Uni - Copy.exe	SCHTASKS.exe
PID 2348 wrote to memory of 4460	2348	Uni - Copy.exe	SCHTASKS.exe
PID 4416 wrote to memory of 4588	4416	Client.exe	schtasks.exe
PID 4416 wrote to memory of 4588	4416	Client.exe	schtasks.exe
PID 4416 wrote to memory of 4588	4416	Client.exe	schtasks.exe
PID 4416 wrote to memory of 540	4416	Client.exe	qcBKJAG7B77d.exe
PID 4416 wrote to memory of 540	4416	Client.exe	qcBKJAG7B77d.exe
PID 4416 wrote to memory of 540	4416	Client.exe	qcBKJAG7B77d.exe

C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy.exe
"C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2348

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy.exe" /rl HIGHEST /f
2⤵
- Quasar RAT
- Creates scheduled task(s)
PID:3892

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:4416

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:4588

C:\Users\Admin\AppData\Local\Temp\qcBKJAG7B77d.exe
"C:\Users\Admin\AppData\Local\Temp\qcBKJAG7B77d.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:540

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Uni - Copy.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy.exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:4460

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=1336,i,15721081447618313297,6839074028983272033,262144 --variations-seed-version --mojo-platform-channel-handle=4332 /prefetch:8
1⤵
PID:4776

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x4f0 0x508
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2760

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DisplayEnhancementService
1⤵
PID:2068

C:\Windows\System32\PickerHost.exe
C:\Windows\System32\PickerHost.exe -Embedding
1⤵
- Suspicious use of SetWindowsHookEx
PID:3840

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\Local\Temp\qcBKJAG7B77d.exe
Filesize
277KB

MD5
dac0c5b2380cbdd93b46763427c9f8df

SHA1
038089e1a0ac8375be797fc3ce7ae719abc72834

SHA256
d02538788fb57f568ece292f5fc20e9775c86d504de67f57e22534f84adc73c6

SHA512
05cc1f6bf25a6545a06c735ae7a4a7fc25489bdb9fbc8d5797be623982662c4a93cba2d20bfe14313ef1548eaaa691e55fabdd8e3d3e45de9ab42dc62f9a7023

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
Filesize
409KB

MD5
b70fdac25a99501e3cae11f1b775249e

SHA1
3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71

SHA256
51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246

SHA512
43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44

Download Submit
memory/2348-16-0x00000000744C0000-0x0000000074C70000-memory.dmp

Filesize
7.7MB

Download
memory/2348-1-0x00000000004D0000-0x000000000053C000-memory.dmp

Filesize
432KB

Download
memory/2348-2-0x00000000054D0000-0x0000000005A74000-memory.dmp

Filesize
5.6MB

Download
memory/2348-3-0x0000000004FC0000-0x0000000005052000-memory.dmp

Filesize
584KB

Download
memory/2348-4-0x00000000744C0000-0x0000000074C70000-memory.dmp

Filesize
7.7MB

Download
memory/2348-5-0x00000000050A0000-0x0000000005106000-memory.dmp

Filesize
408KB

Download
memory/2348-6-0x0000000005DA0000-0x0000000005DB2000-memory.dmp

Filesize
72KB

Download
memory/2348-0-0x00000000744CE000-0x00000000744CF000-memory.dmp

Filesize
4KB

Download
memory/2348-13-0x00000000744CE000-0x00000000744CF000-memory.dmp

Filesize
4KB

Download
memory/4416-12-0x00000000744C0000-0x0000000074C70000-memory.dmp

Filesize
7.7MB

Download
memory/4416-18-0x00000000064D0000-0x00000000064DA000-memory.dmp

Filesize
40KB

Download
memory/4416-19-0x00000000744C0000-0x0000000074C70000-memory.dmp

Filesize
7.7MB

Download
memory/4416-20-0x00000000744C0000-0x0000000074C70000-memory.dmp

Filesize
7.7MB

Download
memory/4416-14-0x00000000744C0000-0x0000000074C70000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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