Malware Analysis Report

2024-10-19 08:42

Sample ID 240421-2y8ljacd95
Target ChappoSpoofer.exe
SHA256 993278405cabf3bb46e69f5784dacc4ac68ed04b5af84de962e15af2b9561618
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

993278405cabf3bb46e69f5784dacc4ac68ed04b5af84de962e15af2b9561618

Threat Level: Known bad

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

Malicious Activity Summary

office04 quasar spyware trojan

Quasar payload

Quasar RAT

Quasar family

Executes dropped EXE

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Creates scheduled task(s)

Suspicious use of SetWindowsHookEx

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-21 23:00

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

2024-04-21 23:00

Reported

2024-04-21 23:03

Platform

win7-20240220-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ChappoSpoofer.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:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe N/A

Creates scheduled task(s)

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe N/A

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\system32\schtasks.exe

"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe" /rl HIGHEST /f

C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe

"C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe"

C:\Windows\system32\schtasks.exe

"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe" /rl HIGHEST /f

Network

Country Destination Domain Proto
N/A 192.168.137.178:4782 tcp
N/A 192.168.137.178:4782 tcp
N/A 192.168.137.178:4782 tcp
N/A 192.168.137.178:4782 tcp
N/A 192.168.137.178:4782 tcp
N/A 192.168.137.178:4782 tcp
N/A 192.168.137.178:4782 tcp

Files

memory/2960-0-0x0000000001140000-0x000000000146C000-memory.dmp

memory/2960-1-0x000007FEF50D0000-0x000007FEF5ABC000-memory.dmp

memory/2960-2-0x000000001B420000-0x000000001B4A0000-memory.dmp

C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe

MD5 de96227eb0709f5bb30dde675b9e6dc4
SHA1 7f3aafdce9b7dd050630e801e8e5b76a95b5e336
SHA256 993278405cabf3bb46e69f5784dacc4ac68ed04b5af84de962e15af2b9561618
SHA512 a3b8df5efe2015bef35f7bdedc03b4c807e58241e057437d897bb1e3ca73e2fb46e68a65c8db3dfc24697851842677b0d88e58854d97345069e235fe3c68745e

memory/2960-9-0x000007FEF50D0000-0x000007FEF5ABC000-memory.dmp

memory/2024-8-0x000007FEF50D0000-0x000007FEF5ABC000-memory.dmp

memory/2024-10-0x0000000001200000-0x000000000152C000-memory.dmp

memory/2024-11-0x000000001B290000-0x000000001B310000-memory.dmp

memory/2024-12-0x000007FEF50D0000-0x000007FEF5ABC000-memory.dmp

memory/2024-13-0x000000001B290000-0x000000001B310000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-21 23:00

Reported

2024-04-21 23:03

Platform

win10v2004-20240412-en

Max time kernel

150s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ChappoSpoofer.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:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe N/A

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe N/A

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe" /rl HIGHEST /f

C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe

"C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe"

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe" /rl HIGHEST /f

C:\Windows\System32\rundll32.exe

C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 67.32.209.4.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
N/A 192.168.137.178:4782 tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
N/A 192.168.137.178:4782 tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
N/A 192.168.137.178:4782 tcp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 49.15.97.104.in-addr.arpa udp
N/A 192.168.137.178:4782 tcp
N/A 192.168.137.178:4782 tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
N/A 192.168.137.178:4782 tcp
N/A 192.168.137.178:4782 tcp

Files

memory/1168-0-0x00000000000E0000-0x000000000040C000-memory.dmp

memory/1168-1-0x00007FF9B2C80000-0x00007FF9B3741000-memory.dmp

memory/1168-2-0x000000001B1E0000-0x000000001B1F0000-memory.dmp

C:\Users\Admin\AppData\Roaming\SubDir\ChappoSpoofer.exe

MD5 de96227eb0709f5bb30dde675b9e6dc4
SHA1 7f3aafdce9b7dd050630e801e8e5b76a95b5e336
SHA256 993278405cabf3bb46e69f5784dacc4ac68ed04b5af84de962e15af2b9561618
SHA512 a3b8df5efe2015bef35f7bdedc03b4c807e58241e057437d897bb1e3ca73e2fb46e68a65c8db3dfc24697851842677b0d88e58854d97345069e235fe3c68745e

memory/3224-11-0x00007FF9B2C80000-0x00007FF9B3741000-memory.dmp

memory/1168-10-0x00007FF9B2C80000-0x00007FF9B3741000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\ChappoSpoofer.exe.log

MD5 baf55b95da4a601229647f25dad12878
SHA1 abc16954ebfd213733c4493fc1910164d825cac8
SHA256 ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924
SHA512 24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

memory/3224-12-0x0000000002CC0000-0x0000000002CD0000-memory.dmp

memory/3224-13-0x000000001C1A0000-0x000000001C1F0000-memory.dmp

memory/3224-14-0x000000001C2B0000-0x000000001C362000-memory.dmp

memory/3224-15-0x00007FF9B2C80000-0x00007FF9B3741000-memory.dmp

memory/3224-16-0x0000000002CC0000-0x0000000002CD0000-memory.dmp

memory/3224-17-0x000000001CBE0000-0x000000001D108000-memory.dmp