Malware Analysis Report

2024-12-07 03:17

Sample ID 241114-fhta1svenj
Target 12cae931fcb16e4e8d7c47130275d2685dd626a2225be3af8712e9fbc6f8ac3c
SHA256 12cae931fcb16e4e8d7c47130275d2685dd626a2225be3af8712e9fbc6f8ac3c
Tags
remcos gasplant discovery evasion execution rat trojan
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

12cae931fcb16e4e8d7c47130275d2685dd626a2225be3af8712e9fbc6f8ac3c

Threat Level: Known bad

The file 12cae931fcb16e4e8d7c47130275d2685dd626a2225be3af8712e9fbc6f8ac3c was found to be: Known bad.

Malicious Activity Summary

remcos gasplant discovery evasion execution rat trojan

Remcos

Windows security bypass

Remcos family

UAC bypass

Command and Scripting Interpreter: PowerShell

Windows security modification

Checks computer location settings

Checks whether UAC is enabled

Suspicious use of SetThreadContext

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

System policy modification

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-14 04:52

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-14 04:52

Reported

2024-11-14 04:55

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

151s

Command Line

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

Signatures

Remcos

rat remcos

Remcos family

remcos

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\LPO.exe N/A

Windows security bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\LPO.exe = "0" C:\Users\Admin\AppData\Local\Temp\LPO.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths C:\Users\Admin\AppData\Local\Temp\LPO.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\LPO.exe N/A

Windows security modification

evasion trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths C:\Users\Admin\AppData\Local\Temp\LPO.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions C:\Users\Admin\AppData\Local\Temp\LPO.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\LPO.exe = "0" C:\Users\Admin\AppData\Local\Temp\LPO.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\LPO.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\LPO.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4252 set thread context of 4992 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4252 wrote to memory of 4660 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4252 wrote to memory of 4660 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4252 wrote to memory of 4992 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 4252 wrote to memory of 4992 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 4252 wrote to memory of 4992 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 4252 wrote to memory of 4992 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 4252 wrote to memory of 4992 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 4252 wrote to memory of 4992 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 4252 wrote to memory of 4992 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 4252 wrote to memory of 4992 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 4252 wrote to memory of 4992 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 4252 wrote to memory of 4992 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 4252 wrote to memory of 5008 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 4252 wrote to memory of 5008 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 4252 wrote to memory of 5008 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\LPO.exe N/A

Processes

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

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

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\LPO.exe" -Force

C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 dotatech.de udp
US 23.95.60.82:30908 dotatech.de tcp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 82.60.95.23.in-addr.arpa udp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 14.173.189.20.in-addr.arpa udp

Files

memory/4252-0-0x00007FFDF1893000-0x00007FFDF1895000-memory.dmp

memory/4252-1-0x000002153FE10000-0x000002153FE18000-memory.dmp

memory/4252-2-0x000002155A5C0000-0x000002155A692000-memory.dmp

memory/4252-3-0x00007FFDF1890000-0x00007FFDF2351000-memory.dmp

memory/4992-4-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-5-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-6-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-7-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4660-8-0x00007FFDF1890000-0x00007FFDF2351000-memory.dmp

memory/4660-19-0x00007FFDF1890000-0x00007FFDF2351000-memory.dmp

memory/4660-14-0x00000257EB090000-0x00000257EB0B2000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vssqptvm.25k.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4992-20-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4660-21-0x00007FFDF1890000-0x00007FFDF2351000-memory.dmp

memory/4660-24-0x00007FFDF1890000-0x00007FFDF2351000-memory.dmp

memory/4252-25-0x00007FFDF1890000-0x00007FFDF2351000-memory.dmp

memory/4992-27-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-26-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-28-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-31-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-32-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-33-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-34-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-35-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-36-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-37-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-38-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-39-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-41-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4992-40-0x0000000000400000-0x000000000047F000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-14 04:52

Reported

2024-11-14 04:55

Platform

win7-20240903-en

Max time kernel

150s

Max time network

144s

Command Line

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

Signatures

Remcos

rat remcos

Remcos family

remcos

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\LPO.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\LPO.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\LPO.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2216 set thread context of 2780 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\Internet Explorer\iexplore.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2216 wrote to memory of 2688 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2216 wrote to memory of 2688 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2216 wrote to memory of 2688 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2216 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 2216 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 2216 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 2216 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
PID 2216 wrote to memory of 2780 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2216 wrote to memory of 2780 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2216 wrote to memory of 2780 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2216 wrote to memory of 2780 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2216 wrote to memory of 2780 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2216 wrote to memory of 2780 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2216 wrote to memory of 2780 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2216 wrote to memory of 2780 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2216 wrote to memory of 2780 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2216 wrote to memory of 2780 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2216 wrote to memory of 2780 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Program Files (x86)\Internet Explorer\iexplore.exe
PID 2216 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\system32\WerFault.exe
PID 2216 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\system32\WerFault.exe
PID 2216 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\LPO.exe C:\Windows\system32\WerFault.exe

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\LPO.exe N/A

Processes

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

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

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\LPO.exe" -Force

C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"

C:\Program Files (x86)\Internet Explorer\iexplore.exe

"C:\Program Files (x86)\Internet Explorer\iexplore.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2216 -s 800

Network

Country Destination Domain Proto
US 8.8.8.8:53 dotatech.de udp
US 23.95.60.82:30908 dotatech.de tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp

Files

memory/2216-0-0x000007FEF54C3000-0x000007FEF54C4000-memory.dmp

memory/2216-1-0x0000000000DB0000-0x0000000000DB8000-memory.dmp

memory/2216-2-0x000007FEF54C0000-0x000007FEF5EAC000-memory.dmp

memory/2216-3-0x000000001AC00000-0x000000001ACD2000-memory.dmp

memory/2688-8-0x0000000002980000-0x0000000002A00000-memory.dmp

memory/2780-9-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2688-10-0x000000001B800000-0x000000001BAE2000-memory.dmp

memory/2688-11-0x0000000001E80000-0x0000000001E88000-memory.dmp

memory/2216-13-0x000007FEF54C0000-0x000007FEF5EAC000-memory.dmp