Malware Analysis Report

2024-08-06 11:30

Sample ID 240612-jnqzmavdrb
Target Client-built.exe
SHA256 939efe1ad093f827c7705afba9f48aea6a22b737cfdc8211ddba615138f8524b
Tags
niga quasar spyware trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

939efe1ad093f827c7705afba9f48aea6a22b737cfdc8211ddba615138f8524b

Threat Level: Known bad

The file Client-built.exe was found to be: Known bad.

Malicious Activity Summary

niga quasar spyware trojan

Quasar family

Quasar RAT

Quasar payload

Executes dropped EXE

Drops file in System32 directory

Unsigned PE

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-12 07:49

Signatures

Quasar family

quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-12 07:49

Reported

2024-06-12 07:52

Platform

win7-20240508-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\system32\kreiasad\asdkwk.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\system32\kreiasad\asdkwk.exe C:\Users\Admin\AppData\Local\Temp\Client-built.exe N/A
File opened for modification C:\Windows\system32\kreiasad\asdkwk.exe C:\Users\Admin\AppData\Local\Temp\Client-built.exe N/A
File opened for modification C:\Windows\system32\kreiasad C:\Users\Admin\AppData\Local\Temp\Client-built.exe N/A
File opened for modification C:\Windows\system32\kreiasad\asdkwk.exe C:\Windows\system32\kreiasad\asdkwk.exe N/A
File opened for modification C:\Windows\system32\kreiasad C:\Windows\system32\kreiasad\asdkwk.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\kreiasad\asdkwk.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\system32\kreiasad\asdkwk.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Windows\system32\kreiasad\asdkwk.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2052 wrote to memory of 2916 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\kreiasad\asdkwk.exe
PID 2052 wrote to memory of 2916 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\kreiasad\asdkwk.exe
PID 2052 wrote to memory of 2916 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\kreiasad\asdkwk.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Client-built.exe

"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"

C:\Windows\system32\kreiasad\asdkwk.exe

"C:\Windows\system32\kreiasad\asdkwk.exe"

Network

Country Destination Domain Proto
N/A 172.31.32.1:4782 tcp
N/A 172.31.32.1:4782 tcp
N/A 172.31.32.1:4782 tcp
N/A 172.31.32.1:4782 tcp
N/A 172.31.32.1:4782 tcp
N/A 172.31.32.1:4782 tcp
N/A 172.31.32.1:4782 tcp

Files

memory/2052-0-0x000007FEF5E93000-0x000007FEF5E94000-memory.dmp

memory/2052-1-0x0000000001250000-0x0000000001574000-memory.dmp

memory/2052-2-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

C:\Windows\System32\kreiasad\asdkwk.exe

MD5 60e4077bc5c678f1f89f57715f3e979d
SHA1 9a49bd9e868772b1bc3db5e88736a807a64c29ed
SHA256 939efe1ad093f827c7705afba9f48aea6a22b737cfdc8211ddba615138f8524b
SHA512 708890550f5db31f840475f87039590956593a00d93c852fae59fc84764e51cadb9318bc52efc03becf648292803891bc70a6011622027ecd35ba054d43698cc

memory/2916-8-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

memory/2916-10-0x0000000000210000-0x0000000000534000-memory.dmp

memory/2052-9-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

memory/2916-11-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

memory/2916-12-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-12 07:49

Reported

2024-06-12 07:52

Platform

win10v2004-20240611-en

Max time kernel

125s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\system32\kreiasad\asdkwk.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\system32\kreiasad\asdkwk.exe C:\Windows\system32\kreiasad\asdkwk.exe N/A
File opened for modification C:\Windows\system32\kreiasad C:\Windows\system32\kreiasad\asdkwk.exe N/A
File created C:\Windows\system32\kreiasad\asdkwk.exe C:\Users\Admin\AppData\Local\Temp\Client-built.exe N/A
File opened for modification C:\Windows\system32\kreiasad\asdkwk.exe C:\Users\Admin\AppData\Local\Temp\Client-built.exe N/A
File opened for modification C:\Windows\system32\kreiasad C:\Users\Admin\AppData\Local\Temp\Client-built.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\kreiasad\asdkwk.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\system32\kreiasad\asdkwk.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Windows\system32\kreiasad\asdkwk.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4736 wrote to memory of 948 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\kreiasad\asdkwk.exe
PID 4736 wrote to memory of 948 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\kreiasad\asdkwk.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Client-built.exe

"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"

C:\Windows\system32\kreiasad\asdkwk.exe

"C:\Windows\system32\kreiasad\asdkwk.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
BE 88.221.83.248:443 www.bing.com tcp
US 8.8.8.8:53 248.83.221.88.in-addr.arpa udp
N/A 172.31.32.1:4782 tcp
N/A 172.31.32.1:4782 tcp
N/A 172.31.32.1:4782 tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
N/A 172.31.32.1:4782 tcp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
N/A 172.31.32.1:4782 tcp
N/A 172.31.32.1:4782 tcp

Files

memory/4736-0-0x0000000000ED0000-0x00000000011F4000-memory.dmp

memory/4736-1-0x00007FF845CE3000-0x00007FF845CE5000-memory.dmp

memory/4736-2-0x00007FF845CE0000-0x00007FF8467A1000-memory.dmp

C:\Windows\System32\kreiasad\asdkwk.exe

MD5 60e4077bc5c678f1f89f57715f3e979d
SHA1 9a49bd9e868772b1bc3db5e88736a807a64c29ed
SHA256 939efe1ad093f827c7705afba9f48aea6a22b737cfdc8211ddba615138f8524b
SHA512 708890550f5db31f840475f87039590956593a00d93c852fae59fc84764e51cadb9318bc52efc03becf648292803891bc70a6011622027ecd35ba054d43698cc

memory/948-10-0x00007FF845CE0000-0x00007FF8467A1000-memory.dmp

memory/4736-9-0x00007FF845CE0000-0x00007FF8467A1000-memory.dmp

memory/948-11-0x00007FF845CE0000-0x00007FF8467A1000-memory.dmp

memory/948-12-0x000000001BD60000-0x000000001BDB0000-memory.dmp

memory/948-13-0x000000001BE70000-0x000000001BF22000-memory.dmp

memory/948-14-0x00007FF845CE0000-0x00007FF8467A1000-memory.dmp