Malware Analysis Report

2024-10-23 19:04

Sample ID 240629-2xxsmsydpg
Target gold.exe
SHA256 c18119713c678bbea78db54da4099ec7c5ff05e06b9c2904f08e9a2bca0219aa
Tags
quasar persistence 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

c18119713c678bbea78db54da4099ec7c5ff05e06b9c2904f08e9a2bca0219aa

Threat Level: Known bad

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

Malicious Activity Summary

quasar persistence spyware trojan

Quasar RAT

Executes dropped EXE

Looks up external IP address via web service

Adds Run key to start application

Drops file in Program Files directory

Unsigned PE

Scheduled Task/Job: Scheduled Task

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-29 22:58

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-29 22:58

Reported

2024-06-29 23:01

Platform

win7-20240611-en

Max time kernel

184s

Max time network

191s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\SubDir\Client.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000\Software\Microsoft\Windows\CurrentVersion\Run\Steam = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\gold.exe\"" C:\Users\Admin\AppData\Local\Temp\gold.exe N/A

Looks up external IP address via web service

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\SubDir\Client.exe C:\Users\Admin\AppData\Local\Temp\gold.exe N/A
File opened for modification C:\Program Files (x86)\SubDir\Client.exe C:\Users\Admin\AppData\Local\Temp\gold.exe N/A
File opened for modification C:\Program Files (x86)\SubDir\Client.exe C:\Program Files (x86)\SubDir\Client.exe N/A
File opened for modification C:\Program Files (x86)\SubDir C:\Program Files (x86)\SubDir\Client.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\gold.exe N/A
Token: SeDebugPrivilege N/A C:\Program Files (x86)\SubDir\Client.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\SubDir\Client.exe N/A

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\system32\schtasks.exe

"schtasks" /create /tn "Steam" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\gold.exe" /rl HIGHEST /f

C:\Program Files (x86)\SubDir\Client.exe

"C:\Program Files (x86)\SubDir\Client.exe"

C:\Windows\system32\schtasks.exe

"schtasks" /create /tn "Steam" /sc ONLOGON /tr "C:\Program Files (x86)\SubDir\Client.exe" /rl HIGHEST /f

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
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 Ratrat2-57487.portmap.host udp
DE 193.161.193.99:57487 Ratrat2-57487.portmap.host tcp
DE 193.161.193.99:57487 Ratrat2-57487.portmap.host tcp
DE 193.161.193.99:57487 Ratrat2-57487.portmap.host tcp
DE 193.161.193.99:57487 Ratrat2-57487.portmap.host tcp
DE 193.161.193.99:57487 Ratrat2-57487.portmap.host tcp
DE 193.161.193.99:57487 Ratrat2-57487.portmap.host tcp

Files

memory/2924-0-0x000007FEF56E3000-0x000007FEF56E4000-memory.dmp

memory/2924-1-0x0000000001160000-0x0000000001168000-memory.dmp

memory/2924-2-0x0000000000BA0000-0x0000000000C3E000-memory.dmp

memory/2924-3-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp

C:\Program Files (x86)\SubDir\Client.exe

MD5 b769a45330b8bb61879f95faab68a297
SHA1 085bab79dba61f06651d9904a0966059678f7abb
SHA256 c18119713c678bbea78db54da4099ec7c5ff05e06b9c2904f08e9a2bca0219aa
SHA512 2841523621dfc463d6256fc6b91daec3861d61e8122b8b912c0da4642d721ad34aca6a8dce8deabcf46d3bfc7f31ceca7bef743ecfe4ea1b0378c28f6b8ca30d

memory/2716-9-0x00000000013E0000-0x00000000013E8000-memory.dmp

memory/2716-10-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp

memory/2716-11-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp

memory/2924-12-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp

memory/2716-14-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp

memory/2716-15-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-29 22:58

Reported

2024-06-29 23:01

Platform

win10v2004-20240611-en

Max time kernel

189s

Max time network

193s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\SubDir\Client.exe N/A

Looks up external IP address via web service

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

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\SubDir\Client.exe C:\Users\Admin\AppData\Local\Temp\gold.exe N/A
File opened for modification C:\Program Files (x86)\SubDir\Client.exe C:\Users\Admin\AppData\Local\Temp\gold.exe N/A
File opened for modification C:\Program Files (x86)\SubDir\Client.exe C:\Program Files (x86)\SubDir\Client.exe N/A
File opened for modification C:\Program Files (x86)\SubDir C:\Program Files (x86)\SubDir\Client.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\gold.exe N/A
Token: SeDebugPrivilege N/A C:\Program Files (x86)\SubDir\Client.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\SubDir\Client.exe N/A

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "Steam" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\gold.exe" /rl HIGHEST /f

C:\Program Files (x86)\SubDir\Client.exe

"C:\Program Files (x86)\SubDir\Client.exe"

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "Steam" /sc ONLOGON /tr "C:\Program Files (x86)\SubDir\Client.exe" /rl HIGHEST /f

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
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 Ratrat2-57487.portmap.host udp
DE 193.161.193.99:57487 Ratrat2-57487.portmap.host tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 99.193.161.193.in-addr.arpa udp
US 52.182.143.211:443 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
PL 93.184.221.240:80 tcp
US 8.8.8.8:53 30.243.111.52.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 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
DE 193.161.193.99:57487 Ratrat2-57487.portmap.host tcp
DE 193.161.193.99:57487 Ratrat2-57487.portmap.host tcp
DE 193.161.193.99:57487 Ratrat2-57487.portmap.host tcp
DE 193.161.193.99:57487 Ratrat2-57487.portmap.host tcp
DE 193.161.193.99:57487 Ratrat2-57487.portmap.host tcp
DE 193.161.193.99:57487 Ratrat2-57487.portmap.host tcp

Files

memory/4220-0-0x00007FFBA4EC3000-0x00007FFBA4EC5000-memory.dmp

memory/4220-1-0x00000000006F0000-0x00000000006F8000-memory.dmp

memory/4220-2-0x0000000002890000-0x000000000292E000-memory.dmp

memory/4220-3-0x00007FFBA4EC0000-0x00007FFBA5981000-memory.dmp

memory/4220-4-0x0000000001030000-0x0000000001042000-memory.dmp

memory/4220-5-0x0000000002930000-0x000000000296C000-memory.dmp

C:\Program Files (x86)\SubDir\Client.exe

MD5 b769a45330b8bb61879f95faab68a297
SHA1 085bab79dba61f06651d9904a0966059678f7abb
SHA256 c18119713c678bbea78db54da4099ec7c5ff05e06b9c2904f08e9a2bca0219aa
SHA512 2841523621dfc463d6256fc6b91daec3861d61e8122b8b912c0da4642d721ad34aca6a8dce8deabcf46d3bfc7f31ceca7bef743ecfe4ea1b0378c28f6b8ca30d

memory/4244-12-0x00007FFBA4EC0000-0x00007FFBA5981000-memory.dmp

memory/4220-13-0x00007FFBA4EC0000-0x00007FFBA5981000-memory.dmp

memory/4244-14-0x00007FFBA4EC0000-0x00007FFBA5981000-memory.dmp

memory/4244-16-0x00007FFBA4EC0000-0x00007FFBA5981000-memory.dmp

memory/4244-17-0x00007FFBA4EC0000-0x00007FFBA5981000-memory.dmp