Malware Analysis Report

2025-01-02 03:11

Sample ID 240818-bvqcns1arq
Target 72fa44e3e13d946e188485a4115c67f4.bin
SHA256 f90d383845316922d60a00f1dec1b8a742b635dc33eea546ede20b5baf93a85b
Tags
upx remcos remotehost discovery 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

f90d383845316922d60a00f1dec1b8a742b635dc33eea546ede20b5baf93a85b

Threat Level: Known bad

The file 72fa44e3e13d946e188485a4115c67f4.bin was found to be: Known bad.

Malicious Activity Summary

upx remcos remotehost discovery rat

Remcos

UPX packed file

Suspicious use of SetThreadContext

AutoIT Executable

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-18 01:28

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 01:28

Reported

2024-08-18 01:30

Platform

win7-20240708-en

Max time kernel

148s

Max time network

129s

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 2624 set thread context of 3024 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/2624-0-0x0000000000E00000-0x0000000000FD7000-memory.dmp

memory/2624-12-0x0000000000560000-0x0000000000564000-memory.dmp

memory/3024-13-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3024-16-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2624-17-0x0000000000E00000-0x0000000000FD7000-memory.dmp

memory/3024-18-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3024-19-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3024-20-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3024-21-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3024-22-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3024-23-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3024-24-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3024-25-0x0000000000400000-0x0000000000482000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-18 01:28

Reported

2024-08-18 01:30

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

128s

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 4400 set thread context of 668 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"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1036,i,5469445176230119590,7931734017267321834,262144 --variations-seed-version --mojo-platform-channel-handle=3956 /prefetch:8

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 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
LT 194.169.175.190:2404 tcp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 190.175.169.194.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
LT 194.169.175.190:2404 tcp
US 8.8.8.8:53 73.144.22.2.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 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 213.143.182.52.in-addr.arpa udp
LT 194.169.175.190:2404 tcp

Files

memory/4400-0-0x0000000000040000-0x0000000000217000-memory.dmp

memory/4400-12-0x0000000003D50000-0x0000000003D54000-memory.dmp

memory/668-13-0x0000000000400000-0x0000000000482000-memory.dmp

memory/668-15-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4400-16-0x0000000000040000-0x0000000000217000-memory.dmp

memory/668-17-0x0000000000400000-0x0000000000482000-memory.dmp

memory/668-19-0x0000000000400000-0x0000000000482000-memory.dmp

memory/668-20-0x0000000000400000-0x0000000000482000-memory.dmp

memory/668-18-0x0000000000400000-0x0000000000482000-memory.dmp

memory/668-21-0x0000000000400000-0x0000000000482000-memory.dmp

memory/668-22-0x0000000000400000-0x0000000000482000-memory.dmp

memory/668-23-0x0000000000400000-0x0000000000482000-memory.dmp

memory/668-24-0x0000000000400000-0x0000000000482000-memory.dmp

memory/668-25-0x0000000000400000-0x0000000000482000-memory.dmp