Malware Analysis Report

2024-11-13 18:37

Sample ID 240227-rfekmabc9t
Target a95aa8f30ca55435085536fa44267ebe
SHA256 5f3bd6c7e98fd1a5af9cfc95f2ff61670db0099a52caeaeae90ce527d0736a33
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

5f3bd6c7e98fd1a5af9cfc95f2ff61670db0099a52caeaeae90ce527d0736a33

Threat Level: Known bad

The file a95aa8f30ca55435085536fa44267ebe was found to be: Known bad.

Malicious Activity Summary

xtremerat persistence rat spyware

XtremeRAT

Xtremerat family

Detect XtremeRAT payload

Modifies Installed Components in the registry

Deletes itself

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-27 14:07

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: behavioral2

Detonation Overview

Submitted

2024-02-27 14:07

Reported

2024-02-27 14:10

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.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
N/A N/A N/A N/A
N/A N/A N/A N/A
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\{61ESDE00-7JEI-D478-YP30-51F6J284W87C} C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{61ESDE00-7JEI-D478-YP30-51F6J284W87C}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\flashEXE\\ctfmon.exe restart" C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe N/A
Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{61ESDE00-7JEI-D478-YP30-51F6J284W87C} C:\Windows\SysWOW64\svchost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{61ESDE00-7JEI-D478-YP30-51F6J284W87C}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\flashEXE\\ctfmon.exe restart" C:\Windows\SysWOW64\svchost.exe N/A

Deletes itself

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Users\\Admin\\AppData\\Roaming\\flashEXE\\ctfmon.exe" C:\Windows\SysWOW64\svchost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Users\\Admin\\AppData\\Roaming\\flashEXE\\ctfmon.exe" C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Users\\Admin\\AppData\\Roaming\\flashEXE\\ctfmon.exe" C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Users\\Admin\\AppData\\Roaming\\flashEXE\\ctfmon.exe" C:\Windows\SysWOW64\svchost.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4380 wrote to memory of 2956 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\svchost.exe
PID 4380 wrote to memory of 2956 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\svchost.exe
PID 4380 wrote to memory of 2956 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\svchost.exe
PID 4380 wrote to memory of 2956 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\svchost.exe
PID 4380 wrote to memory of 2012 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
PID 4380 wrote to memory of 2012 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
PID 4380 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 4380 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 4380 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 4380 wrote to memory of 3560 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 4380 wrote to memory of 3560 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 4380 wrote to memory of 3560 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 4380 wrote to memory of 3560 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 4380 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe

"C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe"

C:\Windows\SysWOW64\svchost.exe

svchost.exe

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"

C:\Windows\SysWOW64\explorer.exe

explorer.exe

C:\Windows\SysWOW64\explorer.exe

explorer.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 206.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 52.111.227.13:443 tcp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 175.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp
US 8.8.8.8:53 rax.no-ip.biz udp

Files

memory/2956-6-0x0000000000C80000-0x0000000000C93000-memory.dmp

C:\Users\Admin\AppData\Roaming\flashEXE\ctfmon.exe

MD5 a95aa8f30ca55435085536fa44267ebe
SHA1 75eee9f9eed3b142c0187a38ad7df62181254c81
SHA256 5f3bd6c7e98fd1a5af9cfc95f2ff61670db0099a52caeaeae90ce527d0736a33
SHA512 b9c2d511f70a5d53ea51bf01288eb9d96b41808d356ae1b235a8da7d91cc37721f36f14fdf049f5e54dc6555beca5916844d1fe42199a55b71a43d26d1e2ecea

memory/3560-8-0x0000000000C80000-0x0000000000C93000-memory.dmp

memory/1972-9-0x0000000000C80000-0x0000000000C93000-memory.dmp

memory/4380-10-0x0000000000C80000-0x0000000000C93000-memory.dmp

memory/1972-11-0x0000000000C80000-0x0000000000C93000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-27 14:07

Reported

2024-02-27 14:10

Platform

win7-20240221-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.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
N/A N/A N/A N/A
N/A N/A N/A N/A
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
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{61ESDE00-7JEI-D478-YP30-51F6J284W87C}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\flashEXE\\ctfmon.exe restart" C:\Windows\SysWOW64\svchost.exe N/A
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{61ESDE00-7JEI-D478-YP30-51F6J284W87C} C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{61ESDE00-7JEI-D478-YP30-51F6J284W87C}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\flashEXE\\ctfmon.exe restart" C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe N/A
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{61ESDE00-7JEI-D478-YP30-51F6J284W87C} C:\Windows\SysWOW64\svchost.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A 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:\\Users\\Admin\\AppData\\Roaming\\flashEXE\\ctfmon.exe" C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Users\\Admin\\AppData\\Roaming\\flashEXE\\ctfmon.exe" C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Users\\Admin\\AppData\\Roaming\\flashEXE\\ctfmon.exe" C:\Windows\SysWOW64\svchost.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Users\\Admin\\AppData\\Roaming\\flashEXE\\ctfmon.exe" C:\Windows\SysWOW64\svchost.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2188 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\svchost.exe
PID 2188 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\svchost.exe
PID 2188 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\svchost.exe
PID 2188 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\svchost.exe
PID 2188 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\svchost.exe
PID 2188 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Program Files\Internet Explorer\iexplore.exe
PID 2188 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Program Files\Internet Explorer\iexplore.exe
PID 2188 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Program Files\Internet Explorer\iexplore.exe
PID 2188 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Program Files\Internet Explorer\iexplore.exe
PID 2188 wrote to memory of 2212 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 2188 wrote to memory of 2212 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 2188 wrote to memory of 2212 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 2188 wrote to memory of 2212 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 2188 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 2188 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 2188 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 2188 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 2188 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe
PID 2188 wrote to memory of 2212 N/A C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe C:\Windows\SysWOW64\explorer.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe

"C:\Users\Admin\AppData\Local\Temp\a95aa8f30ca55435085536fa44267ebe.exe"

C:\Windows\SysWOW64\svchost.exe

svchost.exe

C:\Program Files\Internet Explorer\iexplore.exe

"C:\Program Files\Internet Explorer\iexplore.exe"

C:\Windows\SysWOW64\explorer.exe

explorer.exe

C:\Windows\SysWOW64\explorer.exe

explorer.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 rax.no-ip.biz udp

Files

memory/2036-6-0x0000000000C80000-0x0000000000C93000-memory.dmp

memory/2036-8-0x0000000000C80000-0x0000000000C93000-memory.dmp

C:\Users\Admin\AppData\Roaming\flashEXE\ctfmon.exe

MD5 a95aa8f30ca55435085536fa44267ebe
SHA1 75eee9f9eed3b142c0187a38ad7df62181254c81
SHA256 5f3bd6c7e98fd1a5af9cfc95f2ff61670db0099a52caeaeae90ce527d0736a33
SHA512 b9c2d511f70a5d53ea51bf01288eb9d96b41808d356ae1b235a8da7d91cc37721f36f14fdf049f5e54dc6555beca5916844d1fe42199a55b71a43d26d1e2ecea

memory/2560-12-0x0000000000C80000-0x0000000000C93000-memory.dmp

memory/2212-15-0x0000000000C80000-0x0000000000C93000-memory.dmp

memory/2188-16-0x0000000000C80000-0x0000000000C93000-memory.dmp

memory/2212-17-0x0000000000C80000-0x0000000000C93000-memory.dmp