Malware Analysis Report

2024-10-23 21:24

Sample ID 240805-g44jjsyerj
Target dwdwdw.exe
SHA256 ace4ac0da20b7e8b91205196f973a80e117bc4cede40ea445e851382567456a4
Tags
office04 quasar 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

ace4ac0da20b7e8b91205196f973a80e117bc4cede40ea445e851382567456a4

Threat Level: Known bad

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

Malicious Activity Summary

office04 quasar spyware trojan

Quasar payload

Quasar RAT

Quasar family

Checks computer location settings

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Modifies data under HKEY_USERS

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-05 06:22

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

2024-08-05 06:22

Reported

2024-08-05 06:25

Platform

win7-20240708-en

Max time kernel

148s

Max time network

150s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Processes

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

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

Network

Country Destination Domain Proto
US 147.185.221.18:42996 tcp
US 147.185.221.18:1770 tcp
US 147.185.221.18:42996 tcp
US 147.185.221.18:1770 tcp
US 147.185.221.18:42996 tcp
US 147.185.221.18:1770 tcp
US 147.185.221.18:42996 tcp
US 147.185.221.18:1770 tcp
US 147.185.221.18:42996 tcp
US 147.185.221.18:1770 tcp
US 147.185.221.18:42996 tcp

Files

memory/2136-0-0x000007FEF50A3000-0x000007FEF50A4000-memory.dmp

memory/2136-1-0x0000000001120000-0x0000000001444000-memory.dmp

memory/2136-2-0x000007FEF50A0000-0x000007FEF5A8C000-memory.dmp

memory/2136-3-0x000007FEF50A3000-0x000007FEF50A4000-memory.dmp

memory/2136-4-0x000007FEF50A0000-0x000007FEF5A8C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-05 06:22

Reported

2024-08-05 06:23

Platform

win10v2004-20240802-en

Max time kernel

72s

Max time network

72s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\dwdwdw.exe N/A

Enumerates physical storage devices

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040" C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" C:\Windows\system32\LogonUI.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "103" C:\Windows\system32\LogonUI.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\dwdwdw.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\System32\shutdown.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\System32\shutdown.exe N/A

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2268 wrote to memory of 2052 N/A C:\Users\Admin\AppData\Local\Temp\dwdwdw.exe C:\Windows\System32\shutdown.exe
PID 2268 wrote to memory of 2052 N/A C:\Users\Admin\AppData\Local\Temp\dwdwdw.exe C:\Windows\System32\shutdown.exe

Processes

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

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

C:\Windows\System32\shutdown.exe

"C:\Windows\System32\shutdown.exe" /r /t 0

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x4 /state0:0xa3946855 /state1:0x41c64e6d

Network

Country Destination Domain Proto
US 147.185.221.18:42996 tcp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 18.221.185.147.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 147.185.221.18:1770 tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
US 147.185.221.18:42996 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 90.57.201.195.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 udp
N/A 20.189.173.25:443 tcp
US 8.8.8.8:53 udp

Files

memory/2268-0-0x00007FFBC4853000-0x00007FFBC4855000-memory.dmp

memory/2268-1-0x00000000003A0000-0x00000000006C4000-memory.dmp

memory/2268-2-0x00007FFBC4850000-0x00007FFBC5311000-memory.dmp

memory/2268-3-0x000000001BDB0000-0x000000001BE00000-memory.dmp

memory/2268-4-0x000000001BEC0000-0x000000001BF72000-memory.dmp

memory/2268-5-0x00007FFBC4853000-0x00007FFBC4855000-memory.dmp

memory/2268-6-0x00007FFBC4850000-0x00007FFBC5311000-memory.dmp

memory/2268-7-0x000000001BD80000-0x000000001BD92000-memory.dmp

memory/2268-8-0x000000001BE40000-0x000000001BE7C000-memory.dmp

memory/2268-9-0x00007FFBC4850000-0x00007FFBC5311000-memory.dmp