Malware Analysis Report

2024-12-07 03:27

Sample ID 241113-c56cbavgqr
Target 76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe
SHA256 76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e
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: 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

76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e

Threat Level: Known bad

The file 76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe was found to be: Known bad.

Malicious Activity Summary

remcos gasplant discovery evasion execution rat trojan

UAC bypass

Remcos

Remcos family

Windows security bypass

Command and Scripting Interpreter: PowerShell

Checks computer location settings

Windows security modification

Checks whether UAC is enabled

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of AdjustPrivilegeToken

System policy modification

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 02:40

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 02:40

Reported

2024-11-13 02:43

Platform

win7-20241010-en

Max time kernel

15s

Max time network

19s

Command Line

"C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe"

Signatures

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe

"C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe"

Network

N/A

Files

memory/2328-0-0x000007FEF6003000-0x000007FEF6004000-memory.dmp

memory/2328-1-0x0000000000CF0000-0x0000000000CFA000-memory.dmp

memory/2328-2-0x0000000002100000-0x00000000021D0000-memory.dmp

memory/2328-3-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 02:40

Reported

2024-11-13 02:43

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.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\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.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\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe = "0" C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.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\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe = "0" C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.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\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 452 set thread context of 2864 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.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\ilasm.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\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.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 452 wrote to memory of 3220 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 452 wrote to memory of 3220 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 452 wrote to memory of 544 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\notepad.exe
PID 452 wrote to memory of 544 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\notepad.exe
PID 452 wrote to memory of 544 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\notepad.exe
PID 452 wrote to memory of 544 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\notepad.exe
PID 452 wrote to memory of 544 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\notepad.exe
PID 452 wrote to memory of 544 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\notepad.exe
PID 452 wrote to memory of 544 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\notepad.exe
PID 452 wrote to memory of 544 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\notepad.exe
PID 452 wrote to memory of 2104 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\svchost.exe
PID 452 wrote to memory of 2104 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\svchost.exe
PID 452 wrote to memory of 2104 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\svchost.exe
PID 452 wrote to memory of 2104 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\svchost.exe
PID 452 wrote to memory of 2104 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\svchost.exe
PID 452 wrote to memory of 2104 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\svchost.exe
PID 452 wrote to memory of 2104 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\svchost.exe
PID 452 wrote to memory of 2104 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\System32\svchost.exe
PID 452 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
PID 452 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
PID 452 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
PID 452 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
PID 452 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
PID 452 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
PID 452 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
PID 452 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
PID 452 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
PID 452 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
PID 452 wrote to memory of 4988 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
PID 452 wrote to memory of 4988 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
PID 452 wrote to memory of 4988 N/A C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.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\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe

"C:\Users\Admin\AppData\Local\Temp\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.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\76c67a9a7f86000d03ecca3a53412616677be7841755bccb6b1b988568b8fa3e.exe" -Force

C:\Windows\System32\notepad.exe

"C:\Windows\System32\notepad.exe"

C:\Windows\System32\svchost.exe

"C:\Windows\System32\svchost.exe"

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\ilasm.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa 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 dotatech.de udp
US 23.95.60.82:30908 dotatech.de tcp
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 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/452-0-0x00007FFEF1223000-0x00007FFEF1225000-memory.dmp

memory/452-1-0x000001C5FF1C0000-0x000001C5FF1CA000-memory.dmp

memory/452-2-0x000001C59A0A0000-0x000001C59A170000-memory.dmp

memory/452-3-0x00007FFEF1220000-0x00007FFEF1CE1000-memory.dmp

memory/3220-4-0x00007FFEF1220000-0x00007FFEF1CE1000-memory.dmp

memory/3220-8-0x00007FFEF1220000-0x00007FFEF1CE1000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zcfpkhwp.hqz.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/3220-7-0x000001CEED3A0000-0x000001CEED3C2000-memory.dmp

memory/3220-16-0x00007FFEF1220000-0x00007FFEF1CE1000-memory.dmp

memory/2864-17-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-18-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-19-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-21-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-20-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-22-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3220-25-0x00007FFEF1220000-0x00007FFEF1CE1000-memory.dmp

memory/2864-27-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-26-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-28-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-30-0x0000000000400000-0x000000000047F000-memory.dmp

memory/452-31-0x00007FFEF1220000-0x00007FFEF1CE1000-memory.dmp

memory/2864-32-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-33-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-34-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-35-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-36-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-37-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-38-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-40-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-39-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-41-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2864-42-0x0000000000400000-0x000000000047F000-memory.dmp