Malware Analysis Report

2024-12-07 22:20

Sample ID 240807-rjfxvszbql
Target CEC_Bon_de_plata.pdf.bat
SHA256 cb810150b6ce80f61a808726d5abfbf598239c2e8f260f83bc27d6be9488f45e
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: 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

cb810150b6ce80f61a808726d5abfbf598239c2e8f260f83bc27d6be9488f45e

Threat Level: Known bad

The file CEC_Bon_de_plata.pdf.bat 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 WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-07 14:13

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-07 14:13

Reported

2024-08-07 14:15

Platform

win7-20240708-en

Max time kernel

147s

Max time network

148s

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 620 set thread context of 2808 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 620 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 620 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 620 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 620 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 620 wrote to memory of 2808 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 620 wrote to memory of 2808 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 620 wrote to memory of 2808 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 620 wrote to memory of 2808 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 620 wrote to memory of 2808 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 620 wrote to memory of 2808 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 620 wrote to memory of 2808 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 620 wrote to memory of 2808 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 620 wrote to memory of 2808 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 620 wrote to memory of 2808 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 620 wrote to memory of 2808 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 620 wrote to memory of 2808 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 620 wrote to memory of 2808 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/620-0-0x000000007427E000-0x000000007427F000-memory.dmp

memory/620-1-0x0000000001340000-0x0000000001436000-memory.dmp

memory/620-2-0x0000000074270000-0x000000007495E000-memory.dmp

memory/620-3-0x0000000000430000-0x0000000000440000-memory.dmp

memory/620-4-0x0000000000480000-0x000000000048E000-memory.dmp

memory/620-5-0x0000000005AB0000-0x0000000005B6E000-memory.dmp

memory/2808-6-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-7-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-12-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-16-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-13-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-19-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-18-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2808-21-0x0000000000400000-0x000000000047F000-memory.dmp

memory/620-20-0x000000007427E000-0x000000007427F000-memory.dmp

memory/2808-11-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-10-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-22-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-9-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-8-0x0000000000400000-0x000000000047F000-memory.dmp

memory/620-23-0x0000000074270000-0x000000007495E000-memory.dmp

memory/2808-26-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-27-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-28-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-31-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-32-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-33-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-34-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-35-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-36-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2808-37-0x0000000000400000-0x000000000047F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-07 14:13

Reported

2024-08-07 14:15

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

151s

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-1-5-21-355097885-2402257403-2971294179-1000\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 4800 set thread context of 5056 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 4800 wrote to memory of 4220 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4800 wrote to memory of 4220 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4800 wrote to memory of 4220 N/A C:\Users\Admin\AppData\Local\Temp\CEC_Bon_de_plata.pdf.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4800 wrote to memory of 5056 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 4800 wrote to memory of 5056 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 4800 wrote to memory of 5056 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 4800 wrote to memory of 5056 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 4800 wrote to memory of 5056 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 4800 wrote to memory of 5056 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 4800 wrote to memory of 5056 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 4800 wrote to memory of 5056 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 4800 wrote to memory of 5056 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 4800 wrote to memory of 5056 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 4800 wrote to memory of 5056 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 4800 wrote to memory of 5056 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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 146.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.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 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 73.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp

Files

memory/4800-0-0x000000007513E000-0x000000007513F000-memory.dmp

memory/4800-1-0x0000000000C50000-0x0000000000D46000-memory.dmp

memory/4800-2-0x0000000005CA0000-0x0000000006244000-memory.dmp

memory/4800-3-0x00000000056F0000-0x0000000005782000-memory.dmp

memory/4800-4-0x00000000058B0000-0x00000000058BA000-memory.dmp

memory/4800-5-0x0000000005A00000-0x0000000005A9C000-memory.dmp

memory/4800-6-0x0000000075130000-0x00000000758E0000-memory.dmp

memory/4800-7-0x00000000059F0000-0x0000000005A00000-memory.dmp

memory/4800-8-0x00000000069E0000-0x00000000069EE000-memory.dmp

memory/4800-9-0x0000000006B90000-0x0000000006C4E000-memory.dmp

memory/5056-10-0x0000000000400000-0x000000000047F000-memory.dmp

memory/5056-11-0x0000000000400000-0x000000000047F000-memory.dmp

memory/5056-13-0x0000000000400000-0x000000000047F000-memory.dmp

memory/5056-14-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4800-17-0x0000000075130000-0x00000000758E0000-memory.dmp

memory/5056-16-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4220-18-0x000000007517E000-0x000000007517F000-memory.dmp

memory/4220-19-0x00000000022D0000-0x0000000002306000-memory.dmp

memory/4220-20-0x0000000075170000-0x0000000075920000-memory.dmp

memory/4220-21-0x0000000004EA0000-0x00000000054C8000-memory.dmp

memory/4220-22-0x0000000075170000-0x0000000075920000-memory.dmp

memory/4220-23-0x0000000004C30000-0x0000000004C52000-memory.dmp

memory/4220-25-0x00000000055B0000-0x0000000005616000-memory.dmp

memory/4220-24-0x00000000054D0000-0x0000000005536000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qhe0yyhk.y0a.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4220-35-0x0000000005720000-0x0000000005A74000-memory.dmp

memory/4220-36-0x0000000005BF0000-0x0000000005C0E000-memory.dmp

memory/4220-37-0x0000000005C30000-0x0000000005C7C000-memory.dmp

memory/5056-38-0x0000000000400000-0x000000000047F000-memory.dmp

memory/5056-39-0x0000000000400000-0x000000000047F000-memory.dmp

memory/5056-40-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4220-43-0x0000000006BA0000-0x0000000006BD2000-memory.dmp

memory/4220-44-0x0000000071290000-0x00000000712DC000-memory.dmp

memory/4220-54-0x0000000006B80000-0x0000000006B9E000-memory.dmp

memory/4220-55-0x0000000006DE0000-0x0000000006E83000-memory.dmp

memory/4220-56-0x0000000007560000-0x0000000007BDA000-memory.dmp

memory/4220-57-0x0000000006F20000-0x0000000006F3A000-memory.dmp

memory/4220-58-0x0000000006F90000-0x0000000006F9A000-memory.dmp

memory/4220-59-0x00000000071A0000-0x0000000007236000-memory.dmp

memory/4220-60-0x0000000007120000-0x0000000007131000-memory.dmp

memory/4220-61-0x0000000007150000-0x000000000715E000-memory.dmp

memory/4220-62-0x0000000007160000-0x0000000007174000-memory.dmp

memory/4220-63-0x0000000007260000-0x000000000727A000-memory.dmp

memory/4220-64-0x0000000007240000-0x0000000007248000-memory.dmp

memory/4220-67-0x0000000075170000-0x0000000075920000-memory.dmp

memory/5056-68-0x0000000000400000-0x000000000047F000-memory.dmp

memory/5056-69-0x0000000000400000-0x000000000047F000-memory.dmp

memory/5056-70-0x0000000000400000-0x000000000047F000-memory.dmp

memory/5056-71-0x0000000000400000-0x000000000047F000-memory.dmp

memory/5056-72-0x0000000000400000-0x000000000047F000-memory.dmp

memory/5056-73-0x0000000000400000-0x000000000047F000-memory.dmp

memory/5056-74-0x0000000000400000-0x000000000047F000-memory.dmp