Malware Analysis Report

2024-12-07 22:22

Sample ID 240807-q4wy5ssfqa
Target CEC_Bon_de_plata.pdf.img
SHA256 7ee6d74121c2d7d2c21542308bcb91afe949bde5b31cfff8c7d504f3fa24ee94
Tags
remcos remotehost discovery execution rat
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

7ee6d74121c2d7d2c21542308bcb91afe949bde5b31cfff8c7d504f3fa24ee94

Threat Level: Known bad

The file CEC_Bon_de_plata.pdf.img was found to be: Known bad.

Malicious Activity Summary

remcos remotehost discovery execution rat

Remcos

Command and Scripting Interpreter: PowerShell

Checks computer location settings

Suspicious use of SetThreadContext

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-07 13:49

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-07 13:49

Reported

2024-08-07 13:52

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe"

Signatures

Remcos

rat remcos

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3568 set thread context of 4916 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.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\CEC_Bon_de_plata.pdf.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3568 wrote to memory of 4008 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 3568 wrote to memory of 4008 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 3568 wrote to memory of 4008 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 3568 wrote to memory of 4916 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 3568 wrote to memory of 4916 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 3568 wrote to memory of 4916 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 3568 wrote to memory of 4916 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 3568 wrote to memory of 4916 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 3568 wrote to memory of 4916 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 3568 wrote to memory of 4916 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 3568 wrote to memory of 4916 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 3568 wrote to memory of 4916 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 3568 wrote to memory of 4916 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 3568 wrote to memory of 4916 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 3568 wrote to memory of 4916 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe

Processes

C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe

"C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

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

C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe

"C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 20.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 212.162.149.42:7118 tcp
US 8.8.8.8:53 42.149.162.212.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 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 73.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/3568-0-0x000000007476E000-0x000000007476F000-memory.dmp

memory/3568-1-0x0000000000950000-0x0000000000A46000-memory.dmp

memory/3568-2-0x0000000005A30000-0x0000000005FD4000-memory.dmp

memory/3568-3-0x0000000005480000-0x0000000005512000-memory.dmp

memory/3568-4-0x0000000005410000-0x000000000541A000-memory.dmp

memory/3568-6-0x0000000005700000-0x000000000579C000-memory.dmp

memory/3568-5-0x0000000074760000-0x0000000074F10000-memory.dmp

memory/3568-7-0x00000000056F0000-0x0000000005700000-memory.dmp

memory/3568-8-0x00000000058A0000-0x00000000058AE000-memory.dmp

memory/3568-9-0x0000000006870000-0x000000000692E000-memory.dmp

memory/4916-10-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4916-11-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4916-13-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4916-14-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4916-16-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3568-17-0x0000000074760000-0x0000000074F10000-memory.dmp

memory/4008-18-0x000000007478E000-0x000000007478F000-memory.dmp

memory/4008-19-0x0000000002140000-0x0000000002176000-memory.dmp

memory/4008-22-0x0000000074780000-0x0000000074F30000-memory.dmp

memory/4008-21-0x0000000004C60000-0x0000000005288000-memory.dmp

memory/4008-20-0x0000000074780000-0x0000000074F30000-memory.dmp

memory/4008-23-0x0000000004A50000-0x0000000004A72000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bxv4oq4p.yyr.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4008-25-0x0000000005390000-0x00000000053F6000-memory.dmp

memory/4008-24-0x0000000004B70000-0x0000000004BD6000-memory.dmp

memory/4008-35-0x0000000005440000-0x0000000005794000-memory.dmp

memory/4008-36-0x0000000005A50000-0x0000000005A6E000-memory.dmp

memory/4008-37-0x0000000005B00000-0x0000000005B4C000-memory.dmp

memory/4916-38-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4916-39-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4916-40-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4916-42-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4008-43-0x0000000006A50000-0x0000000006A82000-memory.dmp

memory/4008-44-0x0000000070890000-0x00000000708DC000-memory.dmp

memory/4008-54-0x0000000006000000-0x000000000601E000-memory.dmp

memory/4008-55-0x0000000006A90000-0x0000000006B33000-memory.dmp

memory/4008-56-0x00000000073C0000-0x0000000007A3A000-memory.dmp

memory/4008-57-0x0000000006D80000-0x0000000006D9A000-memory.dmp

memory/4008-58-0x0000000006DF0000-0x0000000006DFA000-memory.dmp

memory/4008-59-0x0000000007000000-0x0000000007096000-memory.dmp

memory/4008-60-0x0000000006F80000-0x0000000006F91000-memory.dmp

memory/4008-61-0x0000000006FB0000-0x0000000006FBE000-memory.dmp

memory/4008-62-0x0000000006FC0000-0x0000000006FD4000-memory.dmp

memory/4008-63-0x00000000070C0000-0x00000000070DA000-memory.dmp

memory/4008-64-0x00000000070A0000-0x00000000070A8000-memory.dmp

memory/4008-67-0x0000000074780000-0x0000000074F30000-memory.dmp

memory/4916-68-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4916-69-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4916-70-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4916-71-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4916-72-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4916-73-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4916-74-0x0000000000400000-0x000000000047F000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-07 13:49

Reported

2024-08-07 13:52

Platform

win7-20240704-en

Max time kernel

149s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe"

Signatures

Remcos

rat remcos

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2152 set thread context of 2492 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.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\CEC_Bon_de_plata.pdf.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2152 wrote to memory of 2040 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2152 wrote to memory of 2040 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2152 wrote to memory of 2040 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2152 wrote to memory of 2040 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2152 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 2152 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 2152 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 2152 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 2152 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 2152 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 2152 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 2152 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 2152 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 2152 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 2152 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 2152 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe
PID 2152 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe

Processes

C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe

"C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

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

C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe

"C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe"

Network

Country Destination Domain Proto
US 212.162.149.42:7118 tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp

Files

memory/2152-0-0x00000000748EE000-0x00000000748EF000-memory.dmp

memory/2152-1-0x0000000000BF0000-0x0000000000CE6000-memory.dmp

memory/2152-2-0x00000000748E0000-0x0000000074FCE000-memory.dmp

memory/2152-3-0x0000000000900000-0x0000000000910000-memory.dmp

memory/2152-4-0x0000000000910000-0x000000000091E000-memory.dmp

memory/2152-5-0x00000000050B0000-0x000000000516E000-memory.dmp

memory/2152-6-0x00000000748EE000-0x00000000748EF000-memory.dmp

memory/2492-7-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-9-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-24-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-28-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2152-29-0x00000000748E0000-0x0000000074FCE000-memory.dmp

memory/2492-27-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-26-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2152-30-0x00000000748E0000-0x0000000074FCE000-memory.dmp

memory/2492-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2492-20-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-18-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-16-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-14-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-13-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-11-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-33-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-34-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-35-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-37-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-38-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-39-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-40-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-41-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-42-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-43-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2492-44-0x0000000000400000-0x000000000047F000-memory.dmp