quasar | d0c4045c70a0822806a4e56d7883821cd2c19362f1cfed3bcbdb1e1b8eb15234

General

Target

New.exe
Size

409KB
MD5

cf570b21f42f0ce411b7c9961068931e
SHA1

f92aa688a1dbd64a4585ecfe80a9c2d7f408c57d
SHA256

d0c4045c70a0822806a4e56d7883821cd2c19362f1cfed3bcbdb1e1b8eb15234
SHA512

de9dce8300656cd8531569011d043373193cbda125b738e66a5bf107178b48781d6dc88eea696b2074c352a1bf56a4693cfae62e668993ac24ce18aebfdcd684
SSDEEP

12288:jpyJcC+PgUUboV2hShYoyTyrIh9eqh6bIK+Pz9:9wd+Y2IweyA9eqkMZ

Score

10^/10

quasar video spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

Video

C2

runderscore00-25501.portmap.host:25501

Mutex

$Sxr-oWTh3ZS9htfe80iIl5

Attributes

encryption_key
zK8u0rpHf4TJzGf65Flt
install_name
Win11.exe
log_directory
$sxr-Logs
reconnect_delay
3000
startup_key
Windows 11 Boot
subdirectory
Win11

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Quasar payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1800-1-0x0000000000F00000-0x0000000000F6C000-memory.dmp	family_quasar

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

New.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation New.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

8 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

SCHTASKS.exe

pid process

2540 SCHTASKS.exe
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

4496 PING.EXE
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

New.exe

description pid process

Token: SeDebugPrivilege 1800 New.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

New.exe

pid process

1800 New.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	New.exe

flow	ioc
8	ip-api.com

pid	process
2540	SCHTASKS.exe

pid	process
4496	PING.EXE

description	pid	process
Token: SeDebugPrivilege	1800	New.exe

pid	process
1800	New.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

New.execmd.exe

description	pid	process	target process
PID 1800 wrote to memory of 3572	1800	New.exe	cmd.exe
PID 1800 wrote to memory of 3572	1800	New.exe	cmd.exe
PID 1800 wrote to memory of 3572	1800	New.exe	cmd.exe
PID 3572 wrote to memory of 2700	3572	cmd.exe	chcp.com
PID 3572 wrote to memory of 2700	3572	cmd.exe	chcp.com
PID 3572 wrote to memory of 2700	3572	cmd.exe	chcp.com
PID 3572 wrote to memory of 4496	3572	cmd.exe	PING.EXE
PID 3572 wrote to memory of 4496	3572	cmd.exe	PING.EXE
PID 3572 wrote to memory of 4496	3572	cmd.exe	PING.EXE
PID 1800 wrote to memory of 2540	1800	New.exe	SCHTASKS.exe
PID 1800 wrote to memory of 2540	1800	New.exe	SCHTASKS.exe
PID 1800 wrote to memory of 2540	1800	New.exe	SCHTASKS.exe

C:\Users\Admin\AppData\Local\Temp\New.exe
"C:\Users\Admin\AppData\Local\Temp\New.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1800

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\sX8tIBvchmaV.bat" "
2⤵
- Suspicious use of WriteProcessMemory
PID:3572

C:\Windows\SysWOW64\chcp.com
chcp 65001
3⤵
PID:2700

C:\Windows\SysWOW64\PING.EXE
ping -n 10 localhost
3⤵
- Runs ping.exe
PID:4496

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77New.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\New.exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:2540

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

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\sX8tIBvchmaV.bat

Filesize
260B

MD5
bcd837a5c3a46e32daa119e4b886595b

SHA1
47966e4245a0a88f30d12c266242a6ac4857b8b9

SHA256
72741c50a095075cd5e4cd7e47f809fb9fb5f01ef1b06936cf2546df49209bcd

SHA512
a17c11c022a84404f3ee0357489ae01702fcf18a40078912d3212db1a5713f2223a413539c85aa84a94d91aabe8b2cc06079b0ba43c8c20c24d9f7f2593a8d99

Download Submit
C:\Users\Admin\AppData\Roaming\$sxr-Logs\05-27-~1

Filesize
224B

MD5
1e1197daea125fef6f6ab43d7dab2529

SHA1
e8f5634b30a6f81085a06f5820dfc8f92185539d

SHA256
8f249049044e76a4337b42f5cad12350c5fa31889fea7688990979a0923ba017

SHA512
b2096d3702a018783f8495bb1cc54e058a9acc6309222b7b575a7edaf3746870029719b3fe9f1f0670c8c1b8ba348c7bc6ca671378a38523e20dcf146b976f9a

Download Submit
memory/1800-6-0x00000000067D0000-0x00000000067E2000-memory.dmp

Filesize
72KB

Download
memory/1800-3-0x0000000005980000-0x0000000005A12000-memory.dmp

Filesize
584KB

Download
memory/1800-4-0x0000000074700000-0x0000000074EB0000-memory.dmp

Filesize
7.7MB

Download
memory/1800-5-0x0000000005A50000-0x0000000005AB6000-memory.dmp

Filesize
408KB

Download
memory/1800-0-0x000000007470E000-0x000000007470F000-memory.dmp

Filesize
4KB

Download
memory/1800-7-0x0000000006D10000-0x0000000006D4C000-memory.dmp

Filesize
240KB

Download
memory/1800-9-0x00000000071D0000-0x00000000071DA000-memory.dmp

Filesize
40KB

Download
memory/1800-10-0x000000007470E000-0x000000007470F000-memory.dmp

Filesize
4KB

Download
memory/1800-11-0x0000000074700000-0x0000000074EB0000-memory.dmp

Filesize
7.7MB

Download
memory/1800-2-0x0000000005E20000-0x00000000063C4000-memory.dmp

Filesize
5.6MB

Download
memory/1800-17-0x0000000074700000-0x0000000074EB0000-memory.dmp

Filesize
7.7MB

Download
memory/1800-1-0x0000000000F00000-0x0000000000F6C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads