quasar | 149ef8e77fbe162157f8462892235211b9f926a3454d615ad4c59e854e48ec82

General

Target

Powershell.exe
Size

409KB
MD5

4286aedc2a233ab74deb2670fa484866
SHA1

860fdc6876a4948f5e352aa50910b9f13607c3fb
SHA256

149ef8e77fbe162157f8462892235211b9f926a3454d615ad4c59e854e48ec82
SHA512

fc3c7885a9f6af0a2d38375f1d256128a474a998c2359938955fff6e45d216dfa1942ccba2359b18f263219d95004b9e976524ef26c967c58cb29a7c6c93f097
SSDEEP

12288:UpsD64e1MDEArEiVTqkllSmxmeN1AKXiLNk2+XRnS:ksG4kMsaGkllvxvuKyZ1N

Score

10^/10

quasar seroxen | v3.1.5 |spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

SeroXen | v3.1.5 |

C2

runderscore00-25501.portmap.host:25501

Mutex

$Sxr-jy6vh8CtEJL5ceZuIb

Attributes

encryption_key
JCa22tR8WnO00adn2TuE
install_name
$sxr-powershell.exe
log_directory
$sxr-Logs
reconnect_delay
3000
startup_key
Powershell
subdirectory
$sxr-seroxen2

Signatures

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

Quasar payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2368-1-0x00000000000D0000-0x000000000013C000-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:

Powershell.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	Powershell.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

14 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

1600 SCHTASKS.exe
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

3740 PING.EXE
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Powershell.exe

description pid process

Token: SeDebugPrivilege 2368 Powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Powershell.exe

pid process

2368 Powershell.exe

flow	ioc
14	ip-api.com

pid	process
1600	SCHTASKS.exe

pid	process
3740	PING.EXE

description	pid	process
Token: SeDebugPrivilege	2368	Powershell.exe

pid	process
2368	Powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Powershell.execmd.exe

description	pid	process	target process
PID 2368 wrote to memory of 4228	2368	Powershell.exe	cmd.exe
PID 2368 wrote to memory of 4228	2368	Powershell.exe	cmd.exe
PID 2368 wrote to memory of 4228	2368	Powershell.exe	cmd.exe
PID 4228 wrote to memory of 920	4228	cmd.exe	chcp.com
PID 4228 wrote to memory of 920	4228	cmd.exe	chcp.com
PID 4228 wrote to memory of 920	4228	cmd.exe	chcp.com
PID 4228 wrote to memory of 3740	4228	cmd.exe	PING.EXE
PID 4228 wrote to memory of 3740	4228	cmd.exe	PING.EXE
PID 4228 wrote to memory of 3740	4228	cmd.exe	PING.EXE
PID 2368 wrote to memory of 1600	2368	Powershell.exe	SCHTASKS.exe
PID 2368 wrote to memory of 1600	2368	Powershell.exe	SCHTASKS.exe
PID 2368 wrote to memory of 1600	2368	Powershell.exe	SCHTASKS.exe

C:\Users\Admin\AppData\Local\Temp\Powershell.exe
"C:\Users\Admin\AppData\Local\Temp\Powershell.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2368

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\jDfjo2BkqDba.bat" "
2⤵
- Suspicious use of WriteProcessMemory
PID:4228

C:\Windows\SysWOW64\chcp.com
chcp 65001
3⤵
PID:920

C:\Windows\SysWOW64\PING.EXE
ping -n 10 localhost
3⤵
- Runs ping.exe
PID:3740

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Powershell.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\Powershell.exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:1600

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\jDfjo2BkqDba.bat

Filesize
267B

MD5
cece0cc4e9a10c2e1ab1a67ce28d8d82

SHA1
2004b13b3de7b563a566c1c219ff46afa3c8f4f0

SHA256
10e102d8bacaa39cf098c8839963301cbffd313b97b6806a56a7402783dcb62f

SHA512
cf44e05e7e7bafc56647c0060f313324336e72a56f880dfbadfd840d3c47b5dbb6461cfe1177f044f364b43af3e1659e2c54a2269ae8cf33c741f629f95b36aa

Download Submit
C:\Users\Admin\AppData\Roaming\$sxr-Logs\05-29-~1

Filesize
224B

MD5
a0cacadd5e423f5acf56ee70f0f263c8

SHA1
df239975f219f20eaecec351998eccf344c359de

SHA256
edc59c584deca039ef33efcf09d561889692fd7da142c267605c182fca4264d3

SHA512
a3beb5f704ecd828b64fb75d4028a589c48bd81214f574161730f6376e182bf8edae18a6dfafbf13ba68ddb1c575d0cb166935a8ca6f26c36d1c10a86360cc10

Download Submit
memory/2368-6-0x00000000051E0000-0x00000000051F2000-memory.dmp

Filesize
72KB

Download
memory/2368-3-0x0000000004B80000-0x0000000004C12000-memory.dmp

Filesize
584KB

Download
memory/2368-4-0x0000000075080000-0x0000000075830000-memory.dmp

Filesize
7.7MB

Download
memory/2368-5-0x0000000004C70000-0x0000000004CD6000-memory.dmp

Filesize
408KB

Download
memory/2368-0-0x000000007508E000-0x000000007508F000-memory.dmp

Filesize
4KB

Download
memory/2368-7-0x0000000005ED0000-0x0000000005F0C000-memory.dmp

Filesize
240KB

Download
memory/2368-9-0x00000000063A0000-0x00000000063AA000-memory.dmp

Filesize
40KB

Download
memory/2368-10-0x000000007508E000-0x000000007508F000-memory.dmp

Filesize
4KB

Download
memory/2368-11-0x0000000075080000-0x0000000075830000-memory.dmp

Filesize
7.7MB

Download
memory/2368-2-0x0000000005220000-0x00000000057C4000-memory.dmp

Filesize
5.6MB

Download
memory/2368-17-0x0000000075080000-0x0000000075830000-memory.dmp

Filesize
7.7MB

Download
memory/2368-1-0x00000000000D0000-0x000000000013C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads