Malware Analysis Report

2024-12-07 03:20

Sample ID 241113-httr2awpfy
Target d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510
SHA256 d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510
Tags
remcos remotehost 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: 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

d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510

Threat Level: Known bad

The file d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510 was found to be: Known bad.

Malicious Activity Summary

remcos remotehost discovery evasion execution rat trojan

Windows security bypass

UAC bypass

Remcos

Remcos family

Command and Scripting Interpreter: PowerShell

Windows security modification

Checks computer location settings

Checks whether UAC is enabled

Suspicious use of SetThreadContext

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

System policy modification

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 07:02

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 07:02

Reported

2024-11-13 07:04

Platform

win7-20240729-en

Max time kernel

120s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe"

Signatures

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe

"C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe"

Network

N/A

Files

memory/2748-0-0x000007FEF58C3000-0x000007FEF58C4000-memory.dmp

memory/2748-1-0x00000000003D0000-0x00000000003D8000-memory.dmp

memory/2748-2-0x000000001AF60000-0x000000001B030000-memory.dmp

memory/2748-3-0x000007FEF58C0000-0x000007FEF62AC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 07:02

Reported

2024-11-13 07:04

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.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\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe N/A

Windows security bypass

evasion trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe = "0" C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe N/A

Windows security modification

evasion trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe = "0" C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.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\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 636 set thread context of 1416 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.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\csc.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:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 636 wrote to memory of 2432 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 636 wrote to memory of 2432 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 636 wrote to memory of 4980 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
PID 636 wrote to memory of 4980 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
PID 636 wrote to memory of 4980 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
PID 636 wrote to memory of 1416 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
PID 636 wrote to memory of 1416 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
PID 636 wrote to memory of 1416 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
PID 636 wrote to memory of 1416 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
PID 636 wrote to memory of 1416 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
PID 636 wrote to memory of 1416 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
PID 636 wrote to memory of 1416 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
PID 636 wrote to memory of 1416 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
PID 636 wrote to memory of 1416 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
PID 636 wrote to memory of 1416 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
PID 636 wrote to memory of 1416 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
PID 636 wrote to memory of 1416 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
PID 636 wrote to memory of 1788 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
PID 636 wrote to memory of 1788 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
PID 636 wrote to memory of 1788 N/A C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.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\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe

"C:\Users\Admin\AppData\Local\Temp\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.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\d4693ce321dd6ce324a3e5ea16394057e2761eef729a667770d8f9b436192510.exe" -Force

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

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

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

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

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

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.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 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 99.209.201.84.in-addr.arpa udp
US 198.46.178.148:2404 tcp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp
US 8.8.8.8:53 148.178.46.198.in-addr.arpa udp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

memory/636-0-0x00007FFA81943000-0x00007FFA81945000-memory.dmp

memory/636-1-0x000002045BA90000-0x000002045BA98000-memory.dmp

memory/636-2-0x0000020475FA0000-0x0000020476070000-memory.dmp

memory/636-3-0x00007FFA81940000-0x00007FFA82401000-memory.dmp

memory/2432-4-0x00007FFA81940000-0x00007FFA82401000-memory.dmp

memory/2432-5-0x00007FFA81940000-0x00007FFA82401000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z2krzfcq.mt0.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2432-6-0x00007FFA81940000-0x00007FFA82401000-memory.dmp

memory/2432-12-0x000001CDF60F0000-0x000001CDF6112000-memory.dmp

memory/1416-17-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1416-18-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1416-19-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1416-20-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1416-21-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2432-24-0x00007FFA81940000-0x00007FFA82401000-memory.dmp

memory/1416-25-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1416-26-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1416-27-0x0000000000400000-0x0000000000482000-memory.dmp

memory/636-30-0x00007FFA81940000-0x00007FFA82401000-memory.dmp

memory/1416-31-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1416-32-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1416-33-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1416-34-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1416-36-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1416-37-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1416-38-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1416-39-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1416-40-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1416-41-0x0000000000400000-0x0000000000482000-memory.dmp