Malware Analysis Report

2025-01-02 03:11

Sample ID 240818-fycm7szgjm
Target f90d383845316922d60a00f1dec1b8a742b635dc33eea546ede20b5baf93a85b
SHA256 f90d383845316922d60a00f1dec1b8a742b635dc33eea546ede20b5baf93a85b
Tags
remcos remotehost discovery rat upx
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

f90d383845316922d60a00f1dec1b8a742b635dc33eea546ede20b5baf93a85b

Threat Level: Known bad

The file f90d383845316922d60a00f1dec1b8a742b635dc33eea546ede20b5baf93a85b was found to be: Known bad.

Malicious Activity Summary

remcos remotehost discovery rat upx

Remcos

UPX packed file

Suspicious use of SetThreadContext

AutoIT Executable

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-18 05:16

Signatures

UPX packed file

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

AutoIT Executable

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-18 05:16

Reported

2024-08-18 05:19

Platform

win7-20240708-en

Max time kernel

148s

Max time network

131s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe"

Signatures

Remcos

rat remcos

UPX packed file

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

AutoIT Executable

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2232 set thread context of 2808 N/A C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe C:\Windows\SysWOW64\svchost.exe

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\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe

"C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe"

Network

Country Destination Domain Proto
LT 194.169.175.190:2404 tcp
LT 194.169.175.190:2404 tcp
LT 194.169.175.190:2404 tcp

Files

memory/2232-0-0x0000000001110000-0x00000000012E7000-memory.dmp

memory/2232-12-0x00000000000F0000-0x00000000000F4000-memory.dmp

memory/2808-14-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2808-15-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2808-17-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2232-18-0x0000000001110000-0x00000000012E7000-memory.dmp

memory/2808-19-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2808-20-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2808-21-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2808-22-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2808-23-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2808-24-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2808-25-0x0000000000400000-0x0000000000482000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-18 05:16

Reported

2024-08-18 05:19

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

132s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe"

Signatures

Remcos

rat remcos

UPX packed file

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

AutoIT Executable

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3680 set thread context of 1140 N/A C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe C:\Windows\SysWOW64\svchost.exe

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\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe

"C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
LT 194.169.175.190:2404 tcp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 190.175.169.194.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
LT 194.169.175.190:2404 tcp
US 8.8.8.8:53 58.99.105.20.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 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
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
LT 194.169.175.190:2404 tcp

Files

memory/3680-0-0x0000000000670000-0x0000000000847000-memory.dmp

memory/3680-12-0x0000000003A40000-0x0000000003A44000-memory.dmp

memory/1140-13-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1140-14-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3680-17-0x0000000000670000-0x0000000000847000-memory.dmp

memory/1140-16-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1140-18-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1140-20-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1140-19-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1140-21-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1140-22-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1140-23-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1140-24-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1140-25-0x0000000000400000-0x0000000000482000-memory.dmp