Malware Analysis Report

2024-12-07 22:31

Sample ID 240408-p5sgnshf74
Target 45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85
SHA256 45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85
Tags
remcos remotehost collection 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

45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85

Threat Level: Known bad

The file 45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85 was found to be: Known bad.

Malicious Activity Summary

remcos remotehost collection rat

Remcos

NirSoft MailPassView

Nirsoft

NirSoft WebBrowserPassView

Executes dropped EXE

Drops startup file

Loads dropped DLL

Accesses Microsoft Outlook accounts

Suspicious use of SetThreadContext

AutoIT Executable

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SendNotifyMessage

Suspicious use of FindShellTrayWindow

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-08 12:55

Signatures

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-08 12:55

Reported

2024-04-08 12:57

Platform

win7-20240221-en

Max time kernel

150s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85.exe"

Signatures

Remcos

rat remcos

NirSoft MailPassView

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

NirSoft WebBrowserPassView

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

Nirsoft

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

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\brawlis.vbs C:\Users\Admin\AppData\Local\reindulgence\brawlis.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\reindulgence\brawlis.exe N/A

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Windows\SysWOW64\svchost.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Windows\SysWOW64\svchost.exe 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 3052 set thread context of 2668 N/A C:\Users\Admin\AppData\Local\reindulgence\brawlis.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 set thread context of 2484 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 set thread context of 2928 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 set thread context of 2212 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 set thread context of 1888 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 set thread context of 1988 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 set thread context of 1232 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2344 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85.exe C:\Users\Admin\AppData\Local\reindulgence\brawlis.exe
PID 2344 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85.exe C:\Users\Admin\AppData\Local\reindulgence\brawlis.exe
PID 2344 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85.exe C:\Users\Admin\AppData\Local\reindulgence\brawlis.exe
PID 2344 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85.exe C:\Users\Admin\AppData\Local\reindulgence\brawlis.exe
PID 3052 wrote to memory of 2668 N/A C:\Users\Admin\AppData\Local\reindulgence\brawlis.exe C:\Windows\SysWOW64\svchost.exe
PID 3052 wrote to memory of 2668 N/A C:\Users\Admin\AppData\Local\reindulgence\brawlis.exe C:\Windows\SysWOW64\svchost.exe
PID 3052 wrote to memory of 2668 N/A C:\Users\Admin\AppData\Local\reindulgence\brawlis.exe C:\Windows\SysWOW64\svchost.exe
PID 3052 wrote to memory of 2668 N/A C:\Users\Admin\AppData\Local\reindulgence\brawlis.exe C:\Windows\SysWOW64\svchost.exe
PID 3052 wrote to memory of 2668 N/A C:\Users\Admin\AppData\Local\reindulgence\brawlis.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2484 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2484 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2484 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2484 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2484 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2928 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2928 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2928 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2928 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2928 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2212 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2212 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2212 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2212 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2212 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 1888 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 1888 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 1888 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 1888 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 1888 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 1988 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 1988 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 1988 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 1988 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 1988 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 1232 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 1232 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 1232 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 1232 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 1232 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85.exe

"C:\Users\Admin\AppData\Local\Temp\45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85.exe"

C:\Users\Admin\AppData\Local\reindulgence\brawlis.exe

"C:\Users\Admin\AppData\Local\Temp\45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85.exe"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\cjkou"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\fephvqaz"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\pgcrwilbjiqm"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\upwbtiiglmmkgnxsfmjnxqliszokcvxbue"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\wjjuusb"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\hlonmkmbnc"

Network

Country Destination Domain Proto
US 107.175.229.139:8087 tcp
US 107.175.229.139:8087 tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp

Files

memory/2344-10-0x00000000000F0000-0x00000000000F4000-memory.dmp

\Users\Admin\AppData\Local\reindulgence\brawlis.exe

MD5 80556551d9c9fc13ac001feaccc2c13e
SHA1 886d9f47100268115f76067448aa30447ac40f2c
SHA256 5d8cbe08388199798a5f213e250099765db589c744e984705c33d42dee79a72a
SHA512 4a1d446b5adbd29f9b2fb778794ce35de33528480cb0baba14a7d43b1308bba98a422babe08ab59243db1ea19e86078917fc7519767c6f94da259425f808a737

C:\Users\Admin\AppData\Local\Temp\vitraillist

MD5 7e652071f4c1e8a16bbcc9fe126774f0
SHA1 e6eed67590573d8427f648e2952e88005fba1efd
SHA256 132f9d86d77df4cc036a745abc0a419412a35b9977005bb0a19258d8a629bbf2
SHA512 469fd55d6f2ffe4f2d2117db33e68f879878013958677d72f27eeaf953611e504bfb8ff89a44558308c10f3f2e204157f5cb50fb78c94b674e410bf84c741ddb

C:\Users\Admin\AppData\Local\Temp\orographically

MD5 17db3ee54b8207f5415603d856255c9d
SHA1 a480c3d3f948e61b258b18732b99732f62fe93e5
SHA256 e138b8344f3c0b7d400d452da5662e5625365f71ca955034f8b6ddf05b4a3c37
SHA512 7a4fc990c68c73f9729e2b56d337a8888094bad6766ad9c9f0cc3faaa89fa289189660bed466adca97039431f9d4ff179227b9f8e1dce2ea6b42b1ea09d50cef

memory/2668-30-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-32-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-33-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-34-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-36-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-37-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-38-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-39-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-40-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-42-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2484-44-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2484-46-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2484-50-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2928-51-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2484-54-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2928-55-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2928-59-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2212-60-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2668-63-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-64-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-65-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2928-67-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2484-70-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2212-69-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2212-72-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1888-77-0x0000000000400000-0x0000000000478000-memory.dmp

memory/1988-85-0x0000000000400000-0x0000000000462000-memory.dmp

memory/1988-86-0x0000000000400000-0x0000000000462000-memory.dmp

memory/1888-81-0x0000000000400000-0x0000000000478000-memory.dmp

memory/1232-89-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1988-90-0x0000000000400000-0x0000000000462000-memory.dmp

memory/1232-91-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1232-92-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1888-97-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2668-100-0x0000000010000000-0x0000000010019000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\upwbtiiglmmkgnxsfmjnxqliszokcvxbue

MD5 f3b25701fe362ec84616a93a45ce9998
SHA1 d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA512 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

memory/2668-103-0x0000000010000000-0x0000000010019000-memory.dmp

memory/2668-104-0x0000000010000000-0x0000000010019000-memory.dmp

memory/2668-105-0x0000000000400000-0x0000000000482000-memory.dmp

C:\ProgramData\remcos\logs.dat

MD5 c592a92aadd638ef1f60bbf64033b9b0
SHA1 8cf8e812a87fc6919631958ed4a76af056662e71
SHA256 b658523ee13db368c7fc9c2d882d2d86462e467615d8c97ee4e7be05b14163a9
SHA512 e35fcde9a68fbaa9c98cd49ebe560bafc17de2c549d240ba0c2d3e3fbe19a83f149bf22299284af0cd934001d197b09c7eb6661e4606131c4a6ec90f3e535ced

memory/2668-110-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-111-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-119-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-120-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-127-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-128-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2668-131-0x0000000010000000-0x0000000010019000-memory.dmp

memory/2668-133-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2212-136-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2668-138-0x0000000000400000-0x0000000000482000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-08 12:55

Reported

2024-04-08 12:57

Platform

win10v2004-20231215-en

Max time kernel

90s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85.exe

"C:\Users\Admin\AppData\Local\Temp\45a09f316758fd79aafe72e9005096989484761a36063d05b7b20f214d3c0b85.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 159.113.53.23.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/2280-10-0x00000000017B0000-0x00000000017B4000-memory.dmp