Malware Analysis Report

2025-01-02 03:10

Sample ID 240816-rxk4qszcqa
Target 20240816138f3e98b496c8f3b17cb1c418e56a2epoetratsnatch
SHA256 01fef4b2e1500e9ab7c52455175381c902315f1a052809cc2e487951ef758e3b
Tags
remcos remotehost discovery evasion rat themida
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

01fef4b2e1500e9ab7c52455175381c902315f1a052809cc2e487951ef758e3b

Threat Level: Known bad

The file 20240816138f3e98b496c8f3b17cb1c418e56a2epoetratsnatch was found to be: Known bad.

Malicious Activity Summary

remcos remotehost discovery evasion rat themida

Suspicious use of NtCreateUserProcessOtherParentProcess

Remcos

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Themida packer

Checks BIOS information in registry

Legitimate hosting services abused for malware hosting/C2

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of SendNotifyMessage

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-16 14:34

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-16 14:34

Reported

2024-08-16 14:37

Platform

win7-20240704-en

Max time kernel

121s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\20240816138f3e98b496c8f3b17cb1c418e56a2epoetratsnatch.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\20240816138f3e98b496c8f3b17cb1c418e56a2epoetratsnatch.exe

"C:\Users\Admin\AppData\Local\Temp\20240816138f3e98b496c8f3b17cb1c418e56a2epoetratsnatch.exe"

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-16 14:34

Reported

2024-08-16 14:37

Platform

win10v2004-20240802-en

Max time kernel

147s

Max time network

146s

Command Line

C:\Windows\Explorer.EXE

Signatures

Remcos

rat remcos

Suspicious use of NtCreateUserProcessOtherParentProcess

Description Indicator Process Target
PID 3900 created 3464 N/A C:\Users\Admin\AppData\Local\Temp\20240816138f3e98b496c8f3b17cb1c418e56a2epoetratsnatch.exe C:\Windows\Explorer.EXE

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Windows\SysWOW64\grpconv.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Windows\SysWOW64\grpconv.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Windows\SysWOW64\grpconv.exe N/A

Themida packer

themida
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Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A raw.githubusercontent.com N/A N/A
N/A raw.githubusercontent.com N/A N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\grpconv.exe N/A

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\20240816138f3e98b496c8f3b17cb1c418e56a2epoetratsnatch.exe N/A

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\20240816138f3e98b496c8f3b17cb1c418e56a2epoetratsnatch.exe

"C:\Users\Admin\AppData\Local\Temp\20240816138f3e98b496c8f3b17cb1c418e56a2epoetratsnatch.exe"

C:\Windows\SysWOW64\grpconv.exe

C:\Windows\SysWOW64\grpconv.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 raw.githubusercontent.com udp
US 185.199.108.133:443 raw.githubusercontent.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 133.108.199.185.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
N/A 192.168.0.195:2404 tcp
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 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
N/A 192.168.0.195:2404 tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 71.190.18.2.in-addr.arpa udp
N/A 192.168.0.195:2404 tcp
US 8.8.8.8:53 35.56.20.217.in-addr.arpa udp
N/A 192.168.0.195:2404 tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 98.210.23.2.in-addr.arpa udp
N/A 192.168.0.195:2404 tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
N/A 192.168.0.195:2404 tcp
N/A 192.168.0.195:2404 tcp

Files

memory/3524-0-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-1-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-2-0x0000000077624000-0x0000000077626000-memory.dmp

memory/3524-3-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-8-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-11-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-13-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-12-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-14-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-10-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-9-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-5-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-4-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-7-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-6-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-16-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-15-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-19-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-20-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-22-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-21-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-23-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-18-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-17-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-24-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-25-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-26-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-27-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-28-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-29-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-30-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-31-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-32-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-33-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-34-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-35-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-36-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-37-0x0000000000600000-0x0000000000D2F000-memory.dmp

memory/3524-38-0x0000000000600000-0x0000000000D2F000-memory.dmp