Malware Analysis Report

2025-01-02 03:12

Sample ID 240814-h7whsazclf
Target c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979
SHA256 c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979
Tags
remotehost remcos discovery evasion persistence 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

c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979

Threat Level: Known bad

The file c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979 was found to be: Known bad.

Malicious Activity Summary

remotehost remcos discovery evasion persistence rat trojan

Remcos

UAC bypass

Remcos family

Adds policy Run key to start application

Executes dropped EXE

Checks computer location settings

Loads dropped DLL

Deletes itself

Adds Run key to start application

Suspicious use of SetThreadContext

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Modifies registry key

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-14 07:23

Signatures

Remcos family

remcos

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-14 07:23

Reported

2024-08-14 07:25

Platform

win7-20240705-en

Max time kernel

122s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe"

Signatures

Remcos

rat remcos

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\SysWOW64\reg.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\SysWOW64\reg.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\SysWOW64\reg.exe N/A

Adds policy Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run C:\ProgramData\Remcos\Updater.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" C:\ProgramData\Remcos\Updater.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run \??\c:\program files (x86)\internet explorer\iexplore.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" \??\c:\program files (x86)\internet explorer\iexplore.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A \??\c:\program files (x86)\internet explorer\iexplore.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\Remcos\Updater.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\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" C:\ProgramData\Remcos\Updater.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" \??\c:\program files (x86)\internet explorer\iexplore.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" \??\c:\program files (x86)\internet explorer\iexplore.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" C:\ProgramData\Remcos\Updater.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2192 set thread context of 1812 N/A C:\ProgramData\Remcos\Updater.exe \??\c:\program files (x86)\internet explorer\iexplore.exe
PID 1812 set thread context of 2756 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\svchost.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\SysWOW64\reg.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\svchost.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\reg.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\ProgramData\Remcos\Updater.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language \??\c:\program files (x86)\internet explorer\iexplore.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\reg.exe N/A

Modifies registry key

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\ProgramData\Remcos\Updater.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\ProgramData\Remcos\Updater.exe N/A
N/A N/A \??\c:\program files (x86)\internet explorer\iexplore.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeRestorePrivilege N/A C:\ProgramData\Remcos\Updater.exe N/A
Token: SeBackupPrivilege N/A C:\ProgramData\Remcos\Updater.exe N/A
Token: SeRestorePrivilege N/A \??\c:\program files (x86)\internet explorer\iexplore.exe N/A
Token: SeBackupPrivilege N/A \??\c:\program files (x86)\internet explorer\iexplore.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2148 wrote to memory of 2088 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\Windows\SysWOW64\cmd.exe
PID 2148 wrote to memory of 2088 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\Windows\SysWOW64\cmd.exe
PID 2148 wrote to memory of 2088 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\Windows\SysWOW64\cmd.exe
PID 2148 wrote to memory of 2088 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\Windows\SysWOW64\cmd.exe
PID 2088 wrote to memory of 2396 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2088 wrote to memory of 2396 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2088 wrote to memory of 2396 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2088 wrote to memory of 2396 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2148 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\ProgramData\Remcos\Updater.exe
PID 2148 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\ProgramData\Remcos\Updater.exe
PID 2148 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\ProgramData\Remcos\Updater.exe
PID 2148 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\ProgramData\Remcos\Updater.exe
PID 2148 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\ProgramData\Remcos\Updater.exe
PID 2148 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\ProgramData\Remcos\Updater.exe
PID 2148 wrote to memory of 2192 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\ProgramData\Remcos\Updater.exe
PID 2192 wrote to memory of 2380 N/A C:\ProgramData\Remcos\Updater.exe C:\Windows\SysWOW64\cmd.exe
PID 2192 wrote to memory of 2380 N/A C:\ProgramData\Remcos\Updater.exe C:\Windows\SysWOW64\cmd.exe
PID 2192 wrote to memory of 2380 N/A C:\ProgramData\Remcos\Updater.exe C:\Windows\SysWOW64\cmd.exe
PID 2192 wrote to memory of 2380 N/A C:\ProgramData\Remcos\Updater.exe C:\Windows\SysWOW64\cmd.exe
PID 2192 wrote to memory of 2380 N/A C:\ProgramData\Remcos\Updater.exe C:\Windows\SysWOW64\cmd.exe
PID 2192 wrote to memory of 2380 N/A C:\ProgramData\Remcos\Updater.exe C:\Windows\SysWOW64\cmd.exe
PID 2192 wrote to memory of 2380 N/A C:\ProgramData\Remcos\Updater.exe C:\Windows\SysWOW64\cmd.exe
PID 2192 wrote to memory of 1812 N/A C:\ProgramData\Remcos\Updater.exe \??\c:\program files (x86)\internet explorer\iexplore.exe
PID 2192 wrote to memory of 1812 N/A C:\ProgramData\Remcos\Updater.exe \??\c:\program files (x86)\internet explorer\iexplore.exe
PID 2192 wrote to memory of 1812 N/A C:\ProgramData\Remcos\Updater.exe \??\c:\program files (x86)\internet explorer\iexplore.exe
PID 2192 wrote to memory of 1812 N/A C:\ProgramData\Remcos\Updater.exe \??\c:\program files (x86)\internet explorer\iexplore.exe
PID 2192 wrote to memory of 1812 N/A C:\ProgramData\Remcos\Updater.exe \??\c:\program files (x86)\internet explorer\iexplore.exe
PID 2192 wrote to memory of 1812 N/A C:\ProgramData\Remcos\Updater.exe \??\c:\program files (x86)\internet explorer\iexplore.exe
PID 2192 wrote to memory of 1812 N/A C:\ProgramData\Remcos\Updater.exe \??\c:\program files (x86)\internet explorer\iexplore.exe
PID 2192 wrote to memory of 1812 N/A C:\ProgramData\Remcos\Updater.exe \??\c:\program files (x86)\internet explorer\iexplore.exe
PID 1812 wrote to memory of 2876 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\cmd.exe
PID 1812 wrote to memory of 2876 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\cmd.exe
PID 1812 wrote to memory of 2876 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\cmd.exe
PID 1812 wrote to memory of 2876 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\cmd.exe
PID 1812 wrote to memory of 2876 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\cmd.exe
PID 1812 wrote to memory of 2876 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\cmd.exe
PID 1812 wrote to memory of 2876 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\cmd.exe
PID 2380 wrote to memory of 536 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2380 wrote to memory of 536 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2380 wrote to memory of 536 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2380 wrote to memory of 536 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2380 wrote to memory of 536 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2380 wrote to memory of 536 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2380 wrote to memory of 536 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1812 wrote to memory of 2756 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\svchost.exe
PID 1812 wrote to memory of 2756 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\svchost.exe
PID 1812 wrote to memory of 2756 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\svchost.exe
PID 1812 wrote to memory of 2756 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\svchost.exe
PID 1812 wrote to memory of 2756 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\svchost.exe
PID 1812 wrote to memory of 2756 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\svchost.exe
PID 1812 wrote to memory of 2756 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\svchost.exe
PID 1812 wrote to memory of 2756 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\svchost.exe
PID 2876 wrote to memory of 2844 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2876 wrote to memory of 2844 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2876 wrote to memory of 2844 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2876 wrote to memory of 2844 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2876 wrote to memory of 2844 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2876 wrote to memory of 2844 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2876 wrote to memory of 2844 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe

"C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe"

C:\Windows\SysWOW64\cmd.exe

/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f

C:\Windows\SysWOW64\reg.exe

C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f

C:\ProgramData\Remcos\Updater.exe

"C:\ProgramData\Remcos\Updater.exe"

C:\Windows\SysWOW64\cmd.exe

/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f

\??\c:\program files (x86)\internet explorer\iexplore.exe

"c:\program files (x86)\internet explorer\iexplore.exe"

C:\Windows\SysWOW64\cmd.exe

/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f

C:\Windows\SysWOW64\reg.exe

C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f

C:\Windows\SysWOW64\svchost.exe

svchost.exe

C:\Windows\SysWOW64\reg.exe

C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 mode-clusters.gl.at.ply.gg udp
US 147.185.221.21:36304 mode-clusters.gl.at.ply.gg tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp
US 147.185.221.21:36304 mode-clusters.gl.at.ply.gg tcp
US 147.185.221.21:36304 mode-clusters.gl.at.ply.gg tcp

Files

\ProgramData\Remcos\Updater.exe

MD5 fbb5244856ca9451f255715fda74cbd6
SHA1 25a0bad14be8583a4d461e97995f9532b2f1eedf
SHA256 c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979
SHA512 c0122730d7e11fb1cf103ec61d1ed7f7da5e3cb02f1a32abb70445348f0d21b56f0a128849d5c27a415cb18b59323fd0c78ea33afc53a6fd9d2291dc1f9f31bb

memory/1812-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1812-12-0x0000000000090000-0x0000000000112000-memory.dmp

memory/1812-15-0x0000000000090000-0x0000000000112000-memory.dmp

memory/1812-13-0x0000000000090000-0x0000000000112000-memory.dmp

memory/1812-16-0x0000000000090000-0x0000000000112000-memory.dmp

memory/1812-24-0x0000000000090000-0x0000000000112000-memory.dmp

memory/2756-23-0x0000000000150000-0x00000000001D2000-memory.dmp

memory/2756-21-0x0000000000150000-0x00000000001D2000-memory.dmp

memory/2756-20-0x0000000000150000-0x00000000001D2000-memory.dmp

memory/2756-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1812-25-0x0000000000090000-0x0000000000112000-memory.dmp

memory/1812-26-0x0000000000090000-0x0000000000112000-memory.dmp

memory/1812-27-0x0000000000090000-0x0000000000112000-memory.dmp

memory/1812-29-0x0000000000090000-0x0000000000112000-memory.dmp

memory/1812-30-0x0000000000090000-0x0000000000112000-memory.dmp

memory/1812-31-0x0000000000090000-0x0000000000112000-memory.dmp

memory/1812-32-0x0000000000090000-0x0000000000112000-memory.dmp

memory/1812-33-0x0000000000090000-0x0000000000112000-memory.dmp

memory/1812-34-0x0000000000090000-0x0000000000112000-memory.dmp

memory/1812-35-0x0000000000090000-0x0000000000112000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-14 07:23

Reported

2024-08-14 07:25

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe"

Signatures

Remcos

rat remcos

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\SysWOW64\reg.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\SysWOW64\reg.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Windows\SysWOW64\reg.exe N/A

Adds policy Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run C:\ProgramData\Remcos\Updater.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" C:\ProgramData\Remcos\Updater.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run \??\c:\program files (x86)\internet explorer\iexplore.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" \??\c:\program files (x86)\internet explorer\iexplore.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A \??\c:\program files (x86)\internet explorer\iexplore.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\Remcos\Updater.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\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" C:\ProgramData\Remcos\Updater.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" C:\ProgramData\Remcos\Updater.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" \??\c:\program files (x86)\internet explorer\iexplore.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" \??\c:\program files (x86)\internet explorer\iexplore.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-CFARP3 = "\"C:\\ProgramData\\Remcos\\Updater.exe\"" C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2744 set thread context of 3884 N/A C:\ProgramData\Remcos\Updater.exe \??\c:\program files (x86)\internet explorer\iexplore.exe
PID 3884 set thread context of 3084 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\svchost.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:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\reg.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\reg.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\reg.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\ProgramData\Remcos\Updater.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language \??\c:\program files (x86)\internet explorer\iexplore.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe N/A

Modifies registry key

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\ProgramData\Remcos\Updater.exe N/A
N/A N/A C:\ProgramData\Remcos\Updater.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\ProgramData\Remcos\Updater.exe N/A
N/A N/A \??\c:\program files (x86)\internet explorer\iexplore.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3748 wrote to memory of 4700 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\Windows\SysWOW64\cmd.exe
PID 3748 wrote to memory of 4700 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\Windows\SysWOW64\cmd.exe
PID 3748 wrote to memory of 4700 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\Windows\SysWOW64\cmd.exe
PID 4700 wrote to memory of 3944 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 4700 wrote to memory of 3944 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 4700 wrote to memory of 3944 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 3748 wrote to memory of 2744 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\ProgramData\Remcos\Updater.exe
PID 3748 wrote to memory of 2744 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\ProgramData\Remcos\Updater.exe
PID 3748 wrote to memory of 2744 N/A C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe C:\ProgramData\Remcos\Updater.exe
PID 2744 wrote to memory of 1756 N/A C:\ProgramData\Remcos\Updater.exe C:\Windows\SysWOW64\cmd.exe
PID 2744 wrote to memory of 1756 N/A C:\ProgramData\Remcos\Updater.exe C:\Windows\SysWOW64\cmd.exe
PID 2744 wrote to memory of 1756 N/A C:\ProgramData\Remcos\Updater.exe C:\Windows\SysWOW64\cmd.exe
PID 2744 wrote to memory of 3884 N/A C:\ProgramData\Remcos\Updater.exe \??\c:\program files (x86)\internet explorer\iexplore.exe
PID 2744 wrote to memory of 3884 N/A C:\ProgramData\Remcos\Updater.exe \??\c:\program files (x86)\internet explorer\iexplore.exe
PID 2744 wrote to memory of 3884 N/A C:\ProgramData\Remcos\Updater.exe \??\c:\program files (x86)\internet explorer\iexplore.exe
PID 2744 wrote to memory of 3884 N/A C:\ProgramData\Remcos\Updater.exe \??\c:\program files (x86)\internet explorer\iexplore.exe
PID 3884 wrote to memory of 3652 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\cmd.exe
PID 3884 wrote to memory of 3652 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\cmd.exe
PID 3884 wrote to memory of 3652 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\cmd.exe
PID 3884 wrote to memory of 3084 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\svchost.exe
PID 3884 wrote to memory of 3084 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\svchost.exe
PID 3884 wrote to memory of 3084 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\svchost.exe
PID 3884 wrote to memory of 3084 N/A \??\c:\program files (x86)\internet explorer\iexplore.exe C:\Windows\SysWOW64\svchost.exe
PID 1756 wrote to memory of 1648 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1756 wrote to memory of 1648 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1756 wrote to memory of 1648 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 3652 wrote to memory of 844 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 3652 wrote to memory of 844 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 3652 wrote to memory of 844 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe

"C:\Users\Admin\AppData\Local\Temp\c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979.exe"

C:\Windows\SysWOW64\cmd.exe

/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f

C:\Windows\SysWOW64\reg.exe

C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f

C:\ProgramData\Remcos\Updater.exe

"C:\ProgramData\Remcos\Updater.exe"

C:\Windows\SysWOW64\cmd.exe

/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f

\??\c:\program files (x86)\internet explorer\iexplore.exe

"c:\program files (x86)\internet explorer\iexplore.exe"

C:\Windows\SysWOW64\cmd.exe

/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f

C:\Windows\SysWOW64\svchost.exe

svchost.exe

C:\Windows\SysWOW64\reg.exe

C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f

C:\Windows\SysWOW64\reg.exe

C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 mode-clusters.gl.at.ply.gg udp
US 147.185.221.21:36304 mode-clusters.gl.at.ply.gg tcp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 21.221.185.147.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp
NL 178.237.33.50:80 geoplugin.net tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
GB 95.101.143.177:443 www.bing.com tcp
US 8.8.8.8:53 177.143.101.95.in-addr.arpa udp
US 147.185.221.21:36304 mode-clusters.gl.at.ply.gg tcp
US 147.185.221.21:36304 mode-clusters.gl.at.ply.gg tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

C:\ProgramData\Remcos\Updater.exe

MD5 fbb5244856ca9451f255715fda74cbd6
SHA1 25a0bad14be8583a4d461e97995f9532b2f1eedf
SHA256 c60c8e8aae5599efe8074f15b92cc5298f41a713197438941296cfd94584b979
SHA512 c0122730d7e11fb1cf103ec61d1ed7f7da5e3cb02f1a32abb70445348f0d21b56f0a128849d5c27a415cb18b59323fd0c78ea33afc53a6fd9d2291dc1f9f31bb

memory/3884-33-0x0000000000C00000-0x0000000000C82000-memory.dmp

memory/3884-34-0x0000000000C00000-0x0000000000C82000-memory.dmp

memory/3884-35-0x0000000000C00000-0x0000000000C82000-memory.dmp

memory/3884-37-0x0000000000C00000-0x0000000000C82000-memory.dmp

memory/3884-36-0x0000000000C00000-0x0000000000C82000-memory.dmp

memory/3084-41-0x0000000000E80000-0x0000000000F02000-memory.dmp

memory/3884-42-0x0000000000C00000-0x0000000000C82000-memory.dmp

memory/3084-40-0x0000000000E80000-0x0000000000F02000-memory.dmp

memory/3884-43-0x0000000000C00000-0x0000000000C82000-memory.dmp

memory/3884-44-0x0000000000C00000-0x0000000000C82000-memory.dmp

memory/3884-45-0x0000000000C00000-0x0000000000C82000-memory.dmp

memory/3884-47-0x0000000000C00000-0x0000000000C82000-memory.dmp

memory/3884-48-0x0000000000C00000-0x0000000000C82000-memory.dmp

memory/3884-49-0x0000000000C00000-0x0000000000C82000-memory.dmp

memory/3884-50-0x0000000000C00000-0x0000000000C82000-memory.dmp

memory/3884-51-0x0000000000C00000-0x0000000000C82000-memory.dmp

memory/3884-52-0x0000000000C00000-0x0000000000C82000-memory.dmp

memory/3884-60-0x0000000000C00000-0x0000000000C82000-memory.dmp