Malware Analysis Report

2025-04-13 11:56

Sample ID 240819-vpwgaawdkg
Target bad.exe
SHA256 2ab87351f388e10ff472ca538d58100cbeb401b7cde14f587ef53a9887154db7
Tags
quasar estocolmo discovery spyware trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

2ab87351f388e10ff472ca538d58100cbeb401b7cde14f587ef53a9887154db7

Threat Level: Known bad

The file bad.exe was found to be: Known bad.

Malicious Activity Summary

quasar estocolmo discovery spyware trojan

Quasar RAT

Quasar payload

Looks up external IP address via web service

Suspicious use of SetThreadContext

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-19 17:10

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-19 17:10

Reported

2024-08-19 17:13

Platform

win7-20240704-en

Max time kernel

13s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bad.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
N/A N/A N/A N/A
N/A N/A N/A N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2112 set thread context of 2720 N/A C:\Users\Admin\AppData\Local\Temp\bad.exe C:\Users\Admin\AppData\Local\Temp\bad.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\bad.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\bad.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bad.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\bad.exe

"C:\Users\Admin\AppData\Local\Temp\bad.exe"

C:\Users\Admin\AppData\Local\Temp\bad.exe

"C:\Users\Admin\AppData\Local\Temp\bad.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
CA 142.4.197.81:5555 tcp

Files

memory/2112-0-0x00000000749AE000-0x00000000749AF000-memory.dmp

memory/2112-1-0x0000000001230000-0x00000000015E6000-memory.dmp

memory/2112-2-0x0000000000200000-0x000000000020C000-memory.dmp

memory/2112-3-0x0000000000250000-0x0000000000258000-memory.dmp

memory/2720-4-0x0000000000400000-0x00000000004EC000-memory.dmp

memory/2720-7-0x0000000000400000-0x00000000004EC000-memory.dmp

memory/2720-10-0x0000000000400000-0x00000000004EC000-memory.dmp

memory/2720-9-0x0000000000400000-0x00000000004EC000-memory.dmp

memory/2720-6-0x0000000000400000-0x00000000004EC000-memory.dmp

memory/2720-5-0x0000000000400000-0x00000000004EC000-memory.dmp

memory/2112-11-0x00000000749A0000-0x000000007508E000-memory.dmp

memory/2720-12-0x00000000749A0000-0x000000007508E000-memory.dmp

memory/2112-13-0x00000000749A0000-0x000000007508E000-memory.dmp

memory/2720-14-0x00000000749A0000-0x000000007508E000-memory.dmp

memory/2720-15-0x00000000749A0000-0x000000007508E000-memory.dmp

memory/2720-16-0x00000000749A0000-0x000000007508E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-19 17:10

Reported

2024-08-19 17:13

Platform

win10v2004-20240802-en

Max time kernel

135s

Max time network

133s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bad.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

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1404 set thread context of 3960 N/A C:\Users\Admin\AppData\Local\Temp\bad.exe C:\Users\Admin\AppData\Local\Temp\bad.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\bad.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\bad.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bad.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\bad.exe

"C:\Users\Admin\AppData\Local\Temp\bad.exe"

C:\Users\Admin\AppData\Local\Temp\bad.exe

"C:\Users\Admin\AppData\Local\Temp\bad.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
CA 142.4.197.81:5555 tcp
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 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 81.197.4.142.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 147.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/1404-0-0x00000000746AE000-0x00000000746AF000-memory.dmp

memory/1404-1-0x0000000000FF0000-0x00000000013A6000-memory.dmp

memory/1404-2-0x0000000005C80000-0x0000000005C8C000-memory.dmp

memory/1404-3-0x0000000006310000-0x00000000068B4000-memory.dmp

memory/3960-5-0x0000000000400000-0x00000000004EC000-memory.dmp

memory/3960-8-0x0000000000400000-0x00000000004EC000-memory.dmp

memory/3960-7-0x0000000000400000-0x00000000004EC000-memory.dmp

memory/3960-14-0x0000000005970000-0x0000000005A02000-memory.dmp

memory/1404-13-0x00000000746A0000-0x0000000074E50000-memory.dmp

memory/3960-12-0x00000000746A0000-0x0000000074E50000-memory.dmp

memory/1404-11-0x00000000746A0000-0x0000000074E50000-memory.dmp

memory/3960-6-0x0000000000400000-0x00000000004EC000-memory.dmp

memory/1404-4-0x0000000005CF0000-0x0000000005CF8000-memory.dmp

memory/3960-15-0x00000000746A0000-0x0000000074E50000-memory.dmp

memory/3960-16-0x0000000005A10000-0x0000000005A76000-memory.dmp

memory/3960-17-0x0000000006630000-0x0000000006642000-memory.dmp

memory/3960-18-0x0000000006CB0000-0x0000000006CEC000-memory.dmp

memory/3960-19-0x00000000073F0000-0x00000000073FA000-memory.dmp

memory/3960-20-0x00000000746A0000-0x0000000074E50000-memory.dmp