Malware Analysis Report

2024-10-23 19:04

Sample ID 240629-bvtebs1bql
Target 73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04.exe
SHA256 73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04
Tags
quasar newoffice spyware trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04

Threat Level: Known bad

The file 73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04.exe was found to be: Known bad.

Malicious Activity Summary

quasar newoffice spyware trojan

Quasar RAT

Quasar payload

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-29 01:28

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-29 01:28

Reported

2024-06-29 01:30

Platform

win7-20240508-en

Max time kernel

130s

Max time network

139s

Command Line

"C:\Users\Admin\AppData\Local\Temp\73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04.exe

"C:\Users\Admin\AppData\Local\Temp\73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04.exe"

Network

Country Destination Domain Proto
HK 117.18.7.76:3782 tcp
HK 117.18.7.76:3782 tcp
HK 117.18.7.76:3782 tcp
HK 117.18.7.76:3782 tcp
HK 117.18.7.76:3782 tcp
HK 117.18.7.76:3782 tcp

Files

memory/2580-0-0x0000000000460000-0x0000000000785000-memory.dmp

memory/2580-1-0x0000000000460000-0x0000000000785000-memory.dmp

memory/2580-2-0x000007FEF50E3000-0x000007FEF50E4000-memory.dmp

memory/2580-3-0x000000001BB70000-0x000000001BE94000-memory.dmp

memory/2580-4-0x000007FEF50E0000-0x000007FEF5ACC000-memory.dmp

memory/2580-5-0x000007FEF50E0000-0x000007FEF5ACC000-memory.dmp

memory/2580-6-0x000007FEF50E0000-0x000007FEF5ACC000-memory.dmp

memory/2580-7-0x000007FEF50E3000-0x000007FEF50E4000-memory.dmp

memory/2580-8-0x000007FEF50E0000-0x000007FEF5ACC000-memory.dmp

memory/2580-9-0x000007FEF50E0000-0x000007FEF5ACC000-memory.dmp

memory/2580-10-0x000007FEF50E0000-0x000007FEF5ACC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-29 01:28

Reported

2024-06-29 01:30

Platform

win10v2004-20240611-en

Max time kernel

139s

Max time network

143s

Command Line

"C:\Users\Admin\AppData\Local\Temp\73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04.exe

"C:\Users\Admin\AppData\Local\Temp\73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4532,i,2029050989380753659,15333598055019363793,262144 --variations-seed-version --mojo-platform-channel-handle=1044 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
HK 117.18.7.76:3782 tcp
GB 52.123.242.9:443 tcp
US 8.8.8.8:53 ipwho.is udp
DE 195.201.57.90:443 ipwho.is tcp
US 8.8.8.8:53 76.7.18.117.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 90.57.201.195.in-addr.arpa udp
GB 52.123.242.49:443 tcp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
BE 23.41.178.51:443 www.bing.com tcp
US 8.8.8.8:53 51.178.41.23.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 214.143.182.52.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp

Files

memory/836-0-0x0000029C2A230000-0x0000029C2A555000-memory.dmp

memory/836-1-0x0000029C2A230000-0x0000029C2A555000-memory.dmp

memory/836-2-0x00007FFCB7663000-0x00007FFCB7665000-memory.dmp

memory/836-3-0x0000029C44EC0000-0x0000029C451E4000-memory.dmp

memory/836-4-0x00007FFCB7660000-0x00007FFCB8121000-memory.dmp

memory/836-5-0x00007FFCB7660000-0x00007FFCB8121000-memory.dmp

memory/836-6-0x00007FFCB7660000-0x00007FFCB8121000-memory.dmp

memory/836-7-0x00007FFCB7660000-0x00007FFCB8121000-memory.dmp

memory/836-8-0x0000029C44C80000-0x0000029C44CD0000-memory.dmp

memory/836-9-0x0000029C45E60000-0x0000029C45F12000-memory.dmp

memory/836-10-0x0000029C44B60000-0x0000029C44B72000-memory.dmp

memory/836-11-0x0000029C45F20000-0x0000029C45F5C000-memory.dmp

memory/836-12-0x00007FFCB7663000-0x00007FFCB7665000-memory.dmp

memory/836-13-0x00007FFCB7660000-0x00007FFCB8121000-memory.dmp

memory/836-14-0x00007FFCB7660000-0x00007FFCB8121000-memory.dmp

memory/836-15-0x00007FFCB7660000-0x00007FFCB8121000-memory.dmp