Malware Analysis Report

2025-06-16 01:18

Sample ID 231205-t9l8nsch99
Target GH0987654560087.bat.exe
SHA256 1f0a225b3b04a26d777a315cb1cacde6d5b0d7fc9e182a96ef035b41adada2de
Tags
remcos remotehost rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

1f0a225b3b04a26d777a315cb1cacde6d5b0d7fc9e182a96ef035b41adada2de

Threat Level: Known bad

The file GH0987654560087.bat.exe was found to be: Known bad.

Malicious Activity Summary

remcos remotehost rat

Remcos

Drops startup file

Suspicious use of SetThreadContext

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-12-05 16:45

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-05 16:45

Reported

2023-12-05 16:52

Platform

win10v2004-20231127-en

Max time kernel

138s

Max time network

159s

Command Line

"C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe"

Signatures

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe

"C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe"

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

"Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 155.245.36.23.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 89.254.221.88.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 26.73.42.20.in-addr.arpa udp

Files

memory/2812-0-0x00000000001B0000-0x00000000002FA000-memory.dmp

memory/2812-1-0x0000000074EC0000-0x0000000075670000-memory.dmp

memory/2812-3-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

memory/2812-2-0x0000000004CD0000-0x0000000004D7E000-memory.dmp

memory/2812-4-0x0000000005330000-0x00000000058D4000-memory.dmp

memory/2812-5-0x0000000004E20000-0x0000000004EB2000-memory.dmp

memory/2812-6-0x0000000004F60000-0x0000000004FFC000-memory.dmp

memory/4848-7-0x0000000002800000-0x0000000002836000-memory.dmp

memory/4848-8-0x0000000074EC0000-0x0000000075670000-memory.dmp

memory/4848-10-0x0000000005410000-0x0000000005A38000-memory.dmp

memory/4848-11-0x0000000004DD0000-0x0000000004DE0000-memory.dmp

memory/4848-9-0x0000000004DD0000-0x0000000004DE0000-memory.dmp

memory/4848-12-0x0000000005350000-0x0000000005372000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cjsigsrp.zcv.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4848-18-0x0000000005A40000-0x0000000005AA6000-memory.dmp

memory/4848-19-0x0000000005B20000-0x0000000005B86000-memory.dmp

memory/2812-24-0x0000000004DA0000-0x0000000004DAA000-memory.dmp

memory/4848-25-0x0000000005C90000-0x0000000005FE4000-memory.dmp

memory/2812-27-0x0000000074EC0000-0x0000000075670000-memory.dmp

memory/4848-28-0x0000000006130000-0x000000000614E000-memory.dmp

memory/4848-29-0x0000000006170000-0x00000000061BC000-memory.dmp

memory/4848-30-0x0000000007110000-0x00000000071A6000-memory.dmp

memory/4848-31-0x0000000006610000-0x000000000662A000-memory.dmp

memory/4848-32-0x0000000006660000-0x0000000006682000-memory.dmp

memory/4848-36-0x0000000074EC0000-0x0000000075670000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-05 16:45

Reported

2023-12-05 16:52

Platform

win7-20231201-en

Max time kernel

150s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe"

Signatures

Remcos

rat remcos

Drops startup file

Description Indicator Process Target
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2072 set thread context of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2072 wrote to memory of 2936 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
PID 2072 wrote to memory of 2936 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
PID 2072 wrote to memory of 2936 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
PID 2072 wrote to memory of 2936 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe

"C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe"

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

"Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\GH0987654560087.bat.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'

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

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

Network

Country Destination Domain Proto
US 107.175.229.139:8087 tcp
US 107.175.229.139:8087 tcp
US 107.175.229.139:8087 tcp
US 107.175.229.139:8087 tcp
US 107.175.229.139:8087 tcp
US 107.175.229.139:8087 tcp
US 107.175.229.139:8087 tcp

Files

memory/2072-0-0x0000000001020000-0x000000000116A000-memory.dmp

memory/2072-1-0x0000000074A10000-0x00000000750FE000-memory.dmp

memory/2072-2-0x0000000000750000-0x0000000000790000-memory.dmp

memory/2072-3-0x0000000000E00000-0x0000000000EAE000-memory.dmp

memory/2936-6-0x0000000070110000-0x00000000706BB000-memory.dmp

memory/2936-7-0x0000000002A40000-0x0000000002A80000-memory.dmp

memory/2936-8-0x0000000002A40000-0x0000000002A80000-memory.dmp

memory/2936-9-0x0000000070110000-0x00000000706BB000-memory.dmp

memory/2072-10-0x0000000000320000-0x000000000032A000-memory.dmp

memory/2648-21-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2072-23-0x0000000074A10000-0x00000000750FE000-memory.dmp

memory/2648-18-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-17-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-16-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-15-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-14-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-13-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-12-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-11-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-24-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2936-29-0x0000000070110000-0x00000000706BB000-memory.dmp

memory/2648-33-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-32-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-31-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-28-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-27-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-38-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-39-0x0000000000400000-0x0000000000482000-memory.dmp

C:\ProgramData\remcos\logs.dat

MD5 da1c2259a5f1874bcd0bf3be4be41a02
SHA1 7a30e2449a433d7824019ada370bd5e25d0fa472
SHA256 5a7e7c7babb22cf972a2b7fa21ce3251e1e222d02265dcded4b3e54af9f5943c
SHA512 51b6248b96d855204e7d3320e3a357932f2e369166e79a3f90385041d575af142d2651f9cec35a05c2e74e1c6fb9a124c9c223f4253c86dad1bbc399685e2efc

memory/2648-44-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-45-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-51-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-52-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-57-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-58-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-63-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-65-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-70-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2648-71-0x0000000000400000-0x0000000000482000-memory.dmp