Malware Analysis Report

2024-12-07 21:20

Sample ID 240205-x2xafsega3
Target 92ca235c3f86059cc7d1063221473543
SHA256 3571f7682d415ec6783bc3da38b16d6dab4caef92827793faff4c0ebf3f83d8a
Tags
xtremerat persistence rat spyware
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

3571f7682d415ec6783bc3da38b16d6dab4caef92827793faff4c0ebf3f83d8a

Threat Level: Known bad

The file 92ca235c3f86059cc7d1063221473543 was found to be: Known bad.

Malicious Activity Summary

xtremerat persistence rat spyware

Detect XtremeRAT payload

Xtremerat family

XtremeRAT

Modifies Installed Components in the registry

Adds Run key to start application

Drops file in System32 directory

Unsigned PE

Enumerates physical storage devices

Program crash

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-05 19:21

Signatures

Detect XtremeRAT payload

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

Xtremerat family

xtremerat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-05 19:21

Reported

2024-02-05 19:24

Platform

win7-20231215-en

Max time kernel

150s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\92ca235c3f86059cc7d1063221473543.exe"

Signatures

Detect XtremeRAT payload

Description Indicator Process Target
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XtremeRAT

persistence spyware rat xtremerat

Modifies Installed Components in the registry

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{KE4B0H28-06KN-13JH-6P67-W0OLIFD4312A} C:\Windows\SysWOW64\explorer.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{KE4B0H28-06KN-13JH-6P67-W0OLIFD4312A}\StubPath = "C:\\Windows\\system32\\InstallDir\\csrss.exe restart" C:\Windows\SysWOW64\explorer.exe N/A
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{KE4B0H28-06KN-13JH-6P67-W0OLIFD4312A} C:\Windows\SysWOW64\svchost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{KE4B0H28-06KN-13JH-6P67-W0OLIFD4312A}\StubPath = "C:\\Windows\\system32\\InstallDir\\csrss.exe" C:\Windows\SysWOW64\svchost.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\csrss.exe" C:\Windows\SysWOW64\explorer.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\csrss.exe" C:\Windows\SysWOW64\explorer.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "explorer.exe" C:\Windows\SysWOW64\explorer.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\csrss.exe" C:\Windows\SysWOW64\svchost.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\csrss.exe" C:\Windows\SysWOW64\svchost.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\InstallDir\csrss.exe C:\Windows\SysWOW64\explorer.exe N/A
File created C:\Windows\SysWOW64\InstallDir\csrss.exe C:\Windows\SysWOW64\explorer.exe N/A
File opened for modification C:\Windows\SysWOW64\InstallDir\ C:\Windows\SysWOW64\explorer.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\92ca235c3f86059cc7d1063221473543.exe

"C:\Users\Admin\AppData\Local\Temp\92ca235c3f86059cc7d1063221473543.exe"

C:\Windows\SysWOW64\svchost.exe

svchost.exe

C:\Windows\SysWOW64\explorer.exe

explorer.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 ananzaa.no-ip.org udp

Files

memory/1864-0-0x0000000010000000-0x000000001004A000-memory.dmp

memory/1864-2-0x0000000010000000-0x000000001004A000-memory.dmp

memory/1944-5-0x0000000010000000-0x000000001004A000-memory.dmp

memory/1708-6-0x0000000010000000-0x000000001004A000-memory.dmp

memory/1944-10-0x0000000010000000-0x000000001004A000-memory.dmp

memory/1944-9-0x0000000010000000-0x000000001004A000-memory.dmp

C:\Windows\SysWOW64\InstallDir\csrss.exe

MD5 92ca235c3f86059cc7d1063221473543
SHA1 7ae5d9a5f0f5209d5e13e4980aecbdc2d716d87a
SHA256 3571f7682d415ec6783bc3da38b16d6dab4caef92827793faff4c0ebf3f83d8a
SHA512 c7b8a037e9f289c7d1ed13846a5ee9e7a0018baf363d90eddfdced7e9ded263ebcaee16be88e150de4b88787414081fb31e0abf3c4651baee78e4ca760dcb6d8

memory/1864-12-0x0000000010000000-0x000000001004A000-memory.dmp

memory/1944-13-0x0000000010000000-0x000000001004A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-05 19:21

Reported

2024-02-05 19:24

Platform

win10v2004-20231215-en

Max time kernel

150s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\92ca235c3f86059cc7d1063221473543.exe"

Signatures

Detect XtremeRAT payload

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

XtremeRAT

persistence spyware rat xtremerat

Modifies Installed Components in the registry

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{KE4B0H28-06KN-13JH-6P67-W0OLIFD4312A} C:\Windows\SysWOW64\explorer.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{KE4B0H28-06KN-13JH-6P67-W0OLIFD4312A}\StubPath = "C:\\Windows\\system32\\InstallDir\\csrss.exe restart" C:\Windows\SysWOW64\explorer.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\csrss.exe" C:\Windows\SysWOW64\explorer.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\csrss.exe" C:\Windows\SysWOW64\explorer.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "explorer.exe" C:\Windows\SysWOW64\explorer.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\InstallDir\csrss.exe C:\Windows\SysWOW64\explorer.exe N/A
File opened for modification C:\Windows\SysWOW64\InstallDir\ C:\Windows\SysWOW64\explorer.exe N/A
File opened for modification C:\Windows\SysWOW64\InstallDir\csrss.exe C:\Windows\SysWOW64\explorer.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\92ca235c3f86059cc7d1063221473543.exe

"C:\Users\Admin\AppData\Local\Temp\92ca235c3f86059cc7d1063221473543.exe"

C:\Windows\SysWOW64\svchost.exe

svchost.exe

C:\Windows\SysWOW64\explorer.exe

explorer.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4228 -ip 4228

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4228 -s 480

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4228 -ip 4228

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4228 -s 476

Network

Country Destination Domain Proto
US 20.231.121.79:80 tcp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 210.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 177.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 67.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 ananzaa.no-ip.org udp
US 8.8.8.8:53 10.179.89.13.in-addr.arpa udp
US 8.8.8.8:53 ananzaa.no-ip.org udp

Files

memory/4228-0-0x0000000010000000-0x000000001004A000-memory.dmp

memory/2484-1-0x0000000010000000-0x000000001004A000-memory.dmp

memory/2648-2-0x0000000010000000-0x000000001004A000-memory.dmp

memory/2484-5-0x0000000010000000-0x000000001004A000-memory.dmp

memory/2484-6-0x0000000010000000-0x000000001004A000-memory.dmp

memory/4228-7-0x0000000010000000-0x000000001004A000-memory.dmp

memory/2484-8-0x0000000010000000-0x000000001004A000-memory.dmp