Malware Analysis Report

2024-12-07 03:20

Sample ID 241113-cvyjqavflm
Target 586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
SHA256 586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7
Tags
remcos remotehost-16465 collection discovery rat spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7

Threat Level: Known bad

The file 586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe was found to be: Known bad.

Malicious Activity Summary

remcos remotehost-16465 collection discovery rat spyware stealer

Remcos family

Remcos

NirSoft MailPassView

Detected Nirsoft tools

NirSoft WebBrowserPassView

Reads user/profile data of web browsers

Accesses Microsoft Outlook accounts

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 02:24

Signatures

Remcos family

remcos

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 02:24

Reported

2024-11-13 02:27

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe"

Signatures

Remcos

rat remcos

Remcos family

remcos

Detected Nirsoft tools

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

NirSoft MailPassView

Description Indicator Process Target
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

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe N/A

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\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4648 wrote to memory of 3272 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 4648 wrote to memory of 3272 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 4648 wrote to memory of 3272 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 4648 wrote to memory of 3472 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 4648 wrote to memory of 3472 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 4648 wrote to memory of 3472 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 4648 wrote to memory of 2540 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 4648 wrote to memory of 2540 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 4648 wrote to memory of 2540 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe

Processes

C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe

"C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe"

C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe

C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe /stext "C:\Users\Admin\AppData\Local\Temp\seopyib"

C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe

C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe /stext "C:\Users\Admin\AppData\Local\Temp\cgtizbmhas"

C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe

C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe /stext "C:\Users\Admin\AppData\Local\Temp\nayartxjwayqz"

Network

Country Destination Domain Proto
US 8.8.8.8:53 rem.aaahorneswll.com udp
BG 31.13.224.230:16465 tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 100.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp
BG 31.13.224.230:16465 tcp
BG 31.13.224.230:16465 tcp
BG 31.13.224.230:16465 tcp
US 8.8.8.8:53 230.224.13.31.in-addr.arpa udp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp

Files

memory/3272-1-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2540-8-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2540-11-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3472-16-0x0000000000400000-0x0000000000462000-memory.dmp

memory/3272-15-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2540-22-0x0000000000430000-0x00000000004F9000-memory.dmp

memory/2540-24-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3472-14-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2540-13-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2540-10-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3472-7-0x0000000000400000-0x0000000000462000-memory.dmp

memory/3272-6-0x0000000000400000-0x0000000000478000-memory.dmp

memory/3472-5-0x0000000000400000-0x0000000000462000-memory.dmp

memory/3272-12-0x0000000000400000-0x0000000000478000-memory.dmp

memory/3272-26-0x0000000000400000-0x0000000000478000-memory.dmp

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

MD5 ac300aeaf27709e2067788fdd4624843
SHA1 e98edd4615d35de96e30f1a0e13c05b42ee7eb7b
SHA256 d2637d58bb120dc6fefe2f38d6e0d4b308006b8639106a7f9e915fa80b5cc9d9
SHA512 09c46e708f9d253dccd4d943639d9f8126f868ae3dcd951aad12222bb98b5d3814676f878c8391b9bdab5dedcf5b9e9eaeb2ad3ffec57bda875198735586d4df

memory/4648-29-0x0000000010000000-0x0000000010019000-memory.dmp

memory/4648-35-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4648-34-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4648-33-0x0000000010000000-0x0000000010019000-memory.dmp

memory/4648-32-0x0000000010000000-0x0000000010019000-memory.dmp

memory/4648-36-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4648-37-0x0000000000400000-0x0000000000482000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 02:24

Reported

2024-11-13 02:27

Platform

win7-20240903-en

Max time kernel

147s

Max time network

145s

Command Line

"C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe"

Signatures

Detected Nirsoft tools

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

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

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

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe N/A

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\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1860 wrote to memory of 2664 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 1860 wrote to memory of 2664 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 1860 wrote to memory of 2664 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 1860 wrote to memory of 2664 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 1860 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 1860 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 1860 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 1860 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 1860 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 1860 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 1860 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe
PID 1860 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe

Processes

C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe

"C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe"

C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe

C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe /stext "C:\Users\Admin\AppData\Local\Temp\ruhnmhjadrjjclbpovw"

C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe

C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe /stext "C:\Users\Admin\AppData\Local\Temp\cwnfnzubzzbwnzptggjkcl"

C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe

C:\Users\Admin\AppData\Local\Temp\586f683570e1dee78b376a2feeaf0e73f04a668ce82f0fe765eff566b3887af7.exe /stext "C:\Users\Admin\AppData\Local\Temp\ersqosevnhtbpflxpqvleqxdy"

Network

Country Destination Domain Proto
US 8.8.8.8:53 rem.aaahorneswll.com udp
BG 31.13.224.230:16465 tcp
BG 31.13.224.230:16465 tcp
BG 31.13.224.230:16465 tcp
BG 31.13.224.230:16465 tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp

Files

memory/2680-2-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2664-5-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2700-17-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2700-16-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2700-19-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2700-15-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2700-13-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2664-11-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2680-10-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2680-8-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2664-7-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2680-6-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2664-1-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2664-9-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2664-24-0x0000000000400000-0x0000000000478000-memory.dmp

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

MD5 f3b25701fe362ec84616a93a45ce9998
SHA1 d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA512 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

memory/2680-29-0x0000000000400000-0x0000000000462000-memory.dmp

memory/1860-30-0x0000000010000000-0x0000000010019000-memory.dmp

memory/1860-34-0x0000000010000000-0x0000000010019000-memory.dmp

memory/1860-33-0x0000000010000000-0x0000000010019000-memory.dmp