Malware Analysis Report

2024-10-23 21:24

Sample ID 240801-q69m1stdkr
Target celery installer.exe
SHA256 6b400e1fc91d48c849aa79f355b641d35658188d668686ad7192333e9b92a1ae
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

6b400e1fc91d48c849aa79f355b641d35658188d668686ad7192333e9b92a1ae

Threat Level: Known bad

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

Malicious Activity Summary

office04 quasar spyware trojan

Quasar family

Quasar RAT

Quasar payload

Executes dropped EXE

Drops file in System32 directory

Unsigned PE

Suspicious use of SetWindowsHookEx

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-01 13:53

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

2024-08-01 13:53

Reported

2024-08-01 13:56

Platform

win7-20240708-en

Max time kernel

149s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\celery installer.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\SubDir\celery.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\system32\SubDir\celery.exe C:\Users\Admin\AppData\Local\Temp\celery installer.exe N/A
File opened for modification C:\Windows\system32\SubDir\celery.exe C:\Users\Admin\AppData\Local\Temp\celery installer.exe N/A
File opened for modification C:\Windows\system32\SubDir C:\Users\Admin\AppData\Local\Temp\celery installer.exe N/A
File opened for modification C:\Windows\system32\SubDir\celery.exe C:\Windows\system32\SubDir\celery.exe N/A
File opened for modification C:\Windows\system32\SubDir C:\Windows\system32\SubDir\celery.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
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\celery installer.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\SubDir\celery.exe N/A

Suspicious use of SetWindowsHookEx

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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\celery installer.exe

"C:\Users\Admin\AppData\Local\Temp\celery installer.exe"

C:\Windows\system32\schtasks.exe

"schtasks" /create /tn "windows defender" /sc ONLOGON /tr "C:\Windows\system32\SubDir\celery.exe" /rl HIGHEST /f

C:\Windows\system32\SubDir\celery.exe

"C:\Windows\system32\SubDir\celery.exe"

C:\Windows\system32\schtasks.exe

"schtasks" /create /tn "windows defender" /sc ONLOGON /tr "C:\Windows\system32\SubDir\celery.exe" /rl HIGHEST /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 Joesnazzy-26854.portmap.host udp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp

Files

memory/2776-0-0x000007FEF4CA3000-0x000007FEF4CA4000-memory.dmp

memory/2776-1-0x0000000000950000-0x0000000000C74000-memory.dmp

memory/2776-2-0x000007FEF4CA0000-0x000007FEF568C000-memory.dmp

C:\Windows\System32\SubDir\celery.exe

MD5 45f959942912fbcd1653b538332c5ec9
SHA1 7fdcd65b7bd7d5bdbc279e0b4fa6eebb8c36fca1
SHA256 6b400e1fc91d48c849aa79f355b641d35658188d668686ad7192333e9b92a1ae
SHA512 9072548e7a5e8f92a910c8621ff1a67fba6dcc4aa3c7af82047bdfdb86165d6d3466ed32081ef87816ccc04b6549367ec65fa2d69e8865ef0d42b6befe26f466

memory/2760-9-0x000007FEF4CA0000-0x000007FEF568C000-memory.dmp

memory/2776-8-0x000007FEF4CA0000-0x000007FEF568C000-memory.dmp

memory/2760-10-0x0000000000EB0000-0x00000000011D4000-memory.dmp

memory/2760-11-0x000007FEF4CA0000-0x000007FEF568C000-memory.dmp

memory/2760-12-0x000007FEF4CA0000-0x000007FEF568C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-01 13:53

Reported

2024-08-01 13:56

Platform

win10v2004-20240730-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\celery installer.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\SubDir\celery.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\system32\SubDir\celery.exe C:\Users\Admin\AppData\Local\Temp\celery installer.exe N/A
File opened for modification C:\Windows\system32\SubDir\celery.exe C:\Users\Admin\AppData\Local\Temp\celery installer.exe N/A
File opened for modification C:\Windows\system32\SubDir C:\Users\Admin\AppData\Local\Temp\celery installer.exe N/A
File opened for modification C:\Windows\system32\SubDir\celery.exe C:\Windows\system32\SubDir\celery.exe N/A
File opened for modification C:\Windows\system32\SubDir C:\Windows\system32\SubDir\celery.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
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\celery installer.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\SubDir\celery.exe N/A

Suspicious use of SetWindowsHookEx

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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\celery installer.exe

"C:\Users\Admin\AppData\Local\Temp\celery installer.exe"

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "windows defender" /sc ONLOGON /tr "C:\Windows\system32\SubDir\celery.exe" /rl HIGHEST /f

C:\Windows\system32\SubDir\celery.exe

"C:\Windows\system32\SubDir\celery.exe"

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "windows defender" /sc ONLOGON /tr "C:\Windows\system32\SubDir\celery.exe" /rl HIGHEST /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 Joesnazzy-26854.portmap.host udp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp
DE 193.161.193.99:26854 Joesnazzy-26854.portmap.host tcp

Files

memory/856-0-0x00007FFD5A6D3000-0x00007FFD5A6D5000-memory.dmp

memory/856-1-0x0000000000D70000-0x0000000001094000-memory.dmp

memory/856-2-0x00007FFD5A6D0000-0x00007FFD5B191000-memory.dmp

C:\Windows\System32\SubDir\celery.exe

MD5 45f959942912fbcd1653b538332c5ec9
SHA1 7fdcd65b7bd7d5bdbc279e0b4fa6eebb8c36fca1
SHA256 6b400e1fc91d48c849aa79f355b641d35658188d668686ad7192333e9b92a1ae
SHA512 9072548e7a5e8f92a910c8621ff1a67fba6dcc4aa3c7af82047bdfdb86165d6d3466ed32081ef87816ccc04b6549367ec65fa2d69e8865ef0d42b6befe26f466

memory/856-9-0x00007FFD5A6D0000-0x00007FFD5B191000-memory.dmp

memory/1440-10-0x00007FFD5A6D0000-0x00007FFD5B191000-memory.dmp

memory/1440-11-0x00007FFD5A6D0000-0x00007FFD5B191000-memory.dmp

memory/1440-12-0x00000000026F0000-0x0000000002740000-memory.dmp

memory/1440-13-0x000000001D090000-0x000000001D142000-memory.dmp

memory/1440-14-0x00007FFD5A6D0000-0x00007FFD5B191000-memory.dmp