quasar | d0030ab6b4ed701eca6cad94f123517f564edb6a17ca33cbe6415cea10ac1401

Analysis

max time kernel
96s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13/12/2024, 07:23 UTC

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General

Target

Client-built.exe
Size

348KB
MD5

e8ecdeb99f70e49718a4fc9986f86df3
SHA1

4f50bde0200a60dfe74a957a4f927e5648e2e78f
SHA256

d0030ab6b4ed701eca6cad94f123517f564edb6a17ca33cbe6415cea10ac1401
SHA512

f04bbab81c20eb22315914d20fa3d34761e0821592189b12c8821b311a3056f9c767bfc57eb41403c55a5eeb0cef50575686c1766ccfb164c5bb1892637c37ba
SSDEEP

6144:SRNHXf500Mr7ULWRbNlPyDg+Rve9cc6i0pzci:Kd50xUxs+RWGcdOzci

Score

10^/10

quasar test discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Test

5.tcp.eu.ngrok.io:13432

5.tcp.eu.ngrok.io:8080

Mutex

QSR_MUTEX_zDi3X3iiANcUc0nFPZ

Attributes

encryption_key
10b0G4xQi1VrldATZzJ7
install_name
win.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Windows Runtime
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/432-1-0x0000000000570000-0x00000000005CE000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023cd0-10.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2360	win.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
16	5.tcp.eu.ngrok.io
40	5.tcp.eu.ngrok.io
44	5.tcp.eu.ngrok.io

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
11	ip-api.com

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\SubDir\win.exe	Client-built.exe
File opened for modification	C:\Windows\SysWOW64\SubDir\win.exe	Client-built.exe

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Client-built.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2944	schtasks.exe
3408	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	432	Client-built.exe
Token: SeDebugPrivilege	2360	win.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2360	win.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 432 wrote to memory of 2944	432	Client-built.exe	84
PID 432 wrote to memory of 2944	432	Client-built.exe	84
PID 432 wrote to memory of 2944	432	Client-built.exe	84
PID 432 wrote to memory of 2360	432	Client-built.exe	86
PID 432 wrote to memory of 2360	432	Client-built.exe	86
PID 432 wrote to memory of 2360	432	Client-built.exe	86
PID 2360 wrote to memory of 3408	2360	win.exe	87
PID 2360 wrote to memory of 3408	2360	win.exe	87
PID 2360 wrote to memory of 3408	2360	win.exe	87

C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:432
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "Windows Runtime" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Client-built.exe" /rl HIGHEST /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2944
- C:\Windows\SysWOW64\SubDir\win.exe
  "C:\Windows\SysWOW64\SubDir\win.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2360
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Windows Runtime" /sc ONLOGON /tr "C:\Windows\SysWOW64\SubDir\win.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3408

Network

DNS

97.17.167.52.in-addr.arpa

Remote address:

8.8.8.8:53

Request

97.17.167.52.in-addr.arpa

IN PTR

Response
DNS

136.32.126.40.in-addr.arpa

Remote address:

8.8.8.8:53

Request

136.32.126.40.in-addr.arpa

IN PTR

Response
DNS

ip-api.com

win.exe

Remote address:

8.8.8.8:53

Request

ip-api.com

IN A

Response

ip-api.com

IN A

208.95.112.1
GET

http://ip-api.com/json/

Client-built.exe

Remote address:

208.95.112.1:80

Request

GET /json/ HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 6.3; rv:48.0) Gecko/20100101 Firefox/48.0
Host: ip-api.com
Connection: Keep-Alive

Response

HTTP/1.1 200 OK

Date: Fri, 13 Dec 2024 07:24:12 GMT
Content-Type: application/json; charset=utf-8
Content-Length: 291
Access-Control-Allow-Origin: *
X-Ttl: 60
X-Rl: 44
DNS

95.221.229.192.in-addr.arpa

Remote address:

8.8.8.8:53

Request

95.221.229.192.in-addr.arpa

IN PTR

Response
DNS

1.112.95.208.in-addr.arpa

Remote address:

8.8.8.8:53

Request

1.112.95.208.in-addr.arpa

IN PTR

Response

1.112.95.208.in-addr.arpa

IN PTR

ip-apicom
GET

http://ip-api.com/json/

win.exe

Remote address:

208.95.112.1:80

Request

GET /json/ HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 6.3; rv:48.0) Gecko/20100101 Firefox/48.0
Host: ip-api.com
Connection: Keep-Alive

Response

HTTP/1.1 200 OK

Date: Fri, 13 Dec 2024 07:24:14 GMT
Content-Type: application/json; charset=utf-8
Content-Length: 291
Access-Control-Allow-Origin: *
X-Ttl: 60
X-Rl: 44
DNS

5.tcp.eu.ngrok.io

win.exe

Remote address:

8.8.8.8:53

Request

5.tcp.eu.ngrok.io

IN A

Response

5.tcp.eu.ngrok.io

IN A

18.158.58.205
DNS

205.58.158.18.in-addr.arpa

Remote address:

8.8.8.8:53

Request

205.58.158.18.in-addr.arpa

IN PTR

Response

205.58.158.18.in-addr.arpa

IN PTR

ec2-18-158-58-205eu-central-1compute amazonawscom
DNS

104.219.191.52.in-addr.arpa

Remote address:

8.8.8.8:53

Request

104.219.191.52.in-addr.arpa

IN PTR

Response
DNS

56.163.245.4.in-addr.arpa

Remote address:

8.8.8.8:53

Request

56.163.245.4.in-addr.arpa

IN PTR

Response
DNS

18.31.95.13.in-addr.arpa

Remote address:

8.8.8.8:53

Request

18.31.95.13.in-addr.arpa

IN PTR

Response
DNS

217.135.221.88.in-addr.arpa

Remote address:

8.8.8.8:53

Request

217.135.221.88.in-addr.arpa

IN PTR

Response

217.135.221.88.in-addr.arpa

IN PTR

a88-221-135-217deploystaticakamaitechnologiescom
DNS

5.tcp.eu.ngrok.io

win.exe

Remote address:

8.8.8.8:53

Request

5.tcp.eu.ngrok.io

IN A

Response

5.tcp.eu.ngrok.io

IN A

3.64.4.198
DNS

5.tcp.eu.ngrok.io

win.exe

Remote address:

8.8.8.8:53

Request

5.tcp.eu.ngrok.io

IN A

Response

5.tcp.eu.ngrok.io

IN A

3.64.4.198
DNS

172.210.232.199.in-addr.arpa

Remote address:

8.8.8.8:53

Request

172.210.232.199.in-addr.arpa

IN PTR

Response
DNS

198.4.64.3.in-addr.arpa

Remote address:

8.8.8.8:53

Request

198.4.64.3.in-addr.arpa

IN PTR

Response

198.4.64.3.in-addr.arpa

IN PTR

ec2-3-64-4-198eu-central-1compute amazonawscom
DNS

19.229.111.52.in-addr.arpa

Remote address:

8.8.8.8:53

Request

19.229.111.52.in-addr.arpa

IN PTR

Response

208.95.112.1:80

http://ip-api.com/json/

http

Client-built.exe

374 B
560 B
5
2

HTTP Request

GET http://ip-api.com/json/

HTTP Response

200
208.95.112.1:80

http://ip-api.com/json/

http

win.exe

374 B
640 B
5
4

HTTP Request

GET http://ip-api.com/json/

HTTP Response

200
18.158.58.205:13432

5.tcp.eu.ngrok.io

win.exe

190 B
132 B
4
3
18.158.58.205:8080

5.tcp.eu.ngrok.io

win.exe

260 B
5
18.158.58.205:13432

5.tcp.eu.ngrok.io

win.exe

190 B
132 B
4
3
3.64.4.198:8080

5.tcp.eu.ngrok.io

win.exe

260 B
5
3.64.4.198:13432

5.tcp.eu.ngrok.io

win.exe

734 B
584 B
11
10

8.8.8.8:53

97.17.167.52.in-addr.arpa

dns

71 B
145 B
1
1

DNS Request

97.17.167.52.in-addr.arpa
8.8.8.8:53

136.32.126.40.in-addr.arpa

dns

72 B
158 B
1
1

DNS Request

136.32.126.40.in-addr.arpa
8.8.8.8:53

ip-api.com

dns

win.exe

56 B
72 B
1
1

DNS Request

ip-api.com

DNS Response

208.95.112.1
8.8.8.8:53

95.221.229.192.in-addr.arpa

dns

73 B
144 B
1
1

DNS Request

95.221.229.192.in-addr.arpa
8.8.8.8:53

1.112.95.208.in-addr.arpa

dns

71 B
95 B
1
1

DNS Request

1.112.95.208.in-addr.arpa
8.8.8.8:53

5.tcp.eu.ngrok.io

dns

win.exe

63 B
79 B
1
1

DNS Request

5.tcp.eu.ngrok.io

DNS Response

18.158.58.205
8.8.8.8:53

205.58.158.18.in-addr.arpa

dns

72 B
138 B
1
1

DNS Request

205.58.158.18.in-addr.arpa
8.8.8.8:53

104.219.191.52.in-addr.arpa

dns

73 B
147 B
1
1

DNS Request

104.219.191.52.in-addr.arpa
8.8.8.8:53

56.163.245.4.in-addr.arpa

dns

71 B
157 B
1
1

DNS Request

56.163.245.4.in-addr.arpa
8.8.8.8:53

18.31.95.13.in-addr.arpa

dns

70 B
144 B
1
1

DNS Request

18.31.95.13.in-addr.arpa
8.8.8.8:53

217.135.221.88.in-addr.arpa

dns

73 B
139 B
1
1

DNS Request

217.135.221.88.in-addr.arpa
8.8.8.8:53

5.tcp.eu.ngrok.io

dns

win.exe

63 B
79 B
1
1

DNS Request

5.tcp.eu.ngrok.io

DNS Response

3.64.4.198
8.8.8.8:53

5.tcp.eu.ngrok.io

dns

win.exe

63 B
79 B
1
1

DNS Request

5.tcp.eu.ngrok.io

DNS Response

3.64.4.198
8.8.8.8:53

172.210.232.199.in-addr.arpa

dns

74 B
128 B
1
1

DNS Request

172.210.232.199.in-addr.arpa
8.8.8.8:53

198.4.64.3.in-addr.arpa

dns

69 B
132 B
1
1

DNS Request

198.4.64.3.in-addr.arpa
8.8.8.8:53

19.229.111.52.in-addr.arpa

dns

72 B
158 B
1
1

DNS Request

19.229.111.52.in-addr.arpa

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\SubDir\win.exe

Filesize
348KB

MD5
e8ecdeb99f70e49718a4fc9986f86df3

SHA1
4f50bde0200a60dfe74a957a4f927e5648e2e78f

SHA256
d0030ab6b4ed701eca6cad94f123517f564edb6a17ca33cbe6415cea10ac1401

SHA512
f04bbab81c20eb22315914d20fa3d34761e0821592189b12c8821b311a3056f9c767bfc57eb41403c55a5eeb0cef50575686c1766ccfb164c5bb1892637c37ba

Download Submit
memory/432-6-0x0000000005530000-0x0000000005542000-memory.dmp

Filesize
72KB

Download
memory/432-2-0x0000000005570000-0x0000000005B14000-memory.dmp

Filesize
5.6MB

Download
memory/432-3-0x0000000005060000-0x00000000050F2000-memory.dmp

Filesize
584KB

Download
memory/432-4-0x00000000749D0000-0x0000000075180000-memory.dmp

Filesize
7.7MB

Download
memory/432-5-0x0000000005160000-0x00000000051C6000-memory.dmp

Filesize
408KB

Download
memory/432-0-0x00000000749DE000-0x00000000749DF000-memory.dmp

Filesize
4KB

Download
memory/432-7-0x0000000006220000-0x000000000625C000-memory.dmp

Filesize
240KB

Download
memory/432-1-0x0000000000570000-0x00000000005CE000-memory.dmp

Filesize
376KB

Download
memory/432-13-0x00000000749D0000-0x0000000075180000-memory.dmp

Filesize
7.7MB

Download
memory/2360-14-0x00000000749D0000-0x0000000075180000-memory.dmp

Filesize
7.7MB

Download
memory/2360-15-0x00000000749D0000-0x0000000075180000-memory.dmp

Filesize
7.7MB

Download
memory/2360-17-0x0000000006820000-0x000000000682A000-memory.dmp

Filesize
40KB

Download
memory/2360-18-0x00000000749D0000-0x0000000075180000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

HTTP Request

HTTP Response

HTTP Request

HTTP Response

DNS Request

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Response

DNS Request

DNS Response

DNS Request

DNS Request

DNS Request

MITRE ATT&CK Enterprise v15

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