Malware Analysis Report

2024-12-07 22:18

Sample ID 240814-gkq44sxfng
Target b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
SHA256 a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792
Tags
remotehost remcos collection credential_access discovery spyware stealer
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

a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792

Threat Level: Known bad

The file b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe was found to be: Known bad.

Malicious Activity Summary

remotehost remcos collection credential_access discovery spyware stealer

Remcos family

NirSoft WebBrowserPassView

NirSoft MailPassView

Detected Nirsoft tools

Credentials from Password Stores: Credentials from Web Browsers

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: MapViewOfSection

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-14 05:52

Signatures

Remcos family

remcos

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-14 05:52

Reported

2024-08-14 05:54

Platform

win7-20240708-en

Max time kernel

147s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe"

Signatures

Credentials from Password Stores: Credentials from Web Browsers

credential_access stealer

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

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

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.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\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2260 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 2260 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 2260 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 2260 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 2260 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 2260 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 2260 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 2260 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 2260 wrote to memory of 796 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 2260 wrote to memory of 796 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 2260 wrote to memory of 796 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 2260 wrote to memory of 796 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe

"C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe"

C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe

C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe /stext "C:\Users\Admin\AppData\Local\Temp\voxopotd"

C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe

C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe /stext "C:\Users\Admin\AppData\Local\Temp\yqczqhmwcce"

C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe

C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe /stext "C:\Users\Admin\AppData\Local\Temp\ilqrrzxyqkxxaz"

Network

Country Destination Domain Proto
FI 65.21.66.222:9821 tcp
FI 65.21.66.222:9821 tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp

Files

memory/796-10-0x0000000000400000-0x0000000000424000-memory.dmp

memory/796-8-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1612-7-0x0000000000400000-0x0000000000457000-memory.dmp

memory/2560-6-0x0000000000400000-0x0000000000478000-memory.dmp

memory/1612-5-0x0000000000400000-0x0000000000457000-memory.dmp

memory/1612-4-0x0000000000400000-0x0000000000457000-memory.dmp

memory/2560-3-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2560-1-0x0000000000400000-0x0000000000478000-memory.dmp

memory/796-14-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1612-13-0x0000000000400000-0x0000000000457000-memory.dmp

memory/2560-12-0x0000000000400000-0x0000000000478000-memory.dmp

memory/796-11-0x0000000000400000-0x0000000000424000-memory.dmp

memory/796-17-0x0000000000400000-0x0000000000424000-memory.dmp

memory/796-15-0x0000000000430000-0x0000000000497000-memory.dmp

memory/2560-22-0x0000000000400000-0x0000000000478000-memory.dmp

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

MD5 f3b25701fe362ec84616a93a45ce9998
SHA1 d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA512 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

memory/1612-26-0x0000000000400000-0x0000000000457000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-14 05:52

Reported

2024-08-14 05:54

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe"

Signatures

Credentials from Password Stores: Credentials from Web Browsers

credential_access stealer

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

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

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.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\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1004 wrote to memory of 4448 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 1004 wrote to memory of 4448 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 1004 wrote to memory of 4448 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 1004 wrote to memory of 3884 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 1004 wrote to memory of 3884 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 1004 wrote to memory of 3884 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 1004 wrote to memory of 3376 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 1004 wrote to memory of 3376 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe
PID 1004 wrote to memory of 3376 N/A C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe

"C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe"

C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe

C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe /stext "C:\Users\Admin\AppData\Local\Temp\zfynnwpvtoaqedfgxhkbulgnrscvdesua"

C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe

C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe /stext "C:\Users\Admin\AppData\Local\Temp\khdyo"

C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe

C:\Users\Admin\AppData\Local\Temp\b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244_payload.exe /stext "C:\Users\Admin\AppData\Local\Temp\ubjqpztq"

Network

Country Destination Domain Proto
FI 65.21.66.222:9821 tcp
FI 65.21.66.222:9821 tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp
US 8.8.8.8:53 222.66.21.65.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 73.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.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 10.27.171.150.in-addr.arpa udp

Files

memory/4448-1-0x0000000000400000-0x0000000000478000-memory.dmp

memory/3884-3-0x0000000000400000-0x0000000000457000-memory.dmp

memory/3376-8-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3884-12-0x0000000000400000-0x0000000000457000-memory.dmp

memory/4448-16-0x0000000000400000-0x0000000000478000-memory.dmp

memory/3376-22-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3884-19-0x0000000000400000-0x0000000000457000-memory.dmp

memory/4448-15-0x0000000000400000-0x0000000000478000-memory.dmp

memory/3376-14-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3884-13-0x0000000000400000-0x0000000000457000-memory.dmp

memory/3376-11-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3884-10-0x0000000000400000-0x0000000000457000-memory.dmp

memory/4448-6-0x0000000000400000-0x0000000000478000-memory.dmp

memory/3376-5-0x0000000000400000-0x0000000000424000-memory.dmp

memory/4448-27-0x0000000000400000-0x0000000000478000-memory.dmp

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

MD5 18db1829b27eaeed163c211f5d179d72
SHA1 4442332494cba1e012f8876ecac42126ba995bc6
SHA256 610c5ee3f0e63441521d26bc477c9618a4c5f86e93d31b31890680c69e3ecc3d
SHA512 123d68b2c84f7a52d15faa212c06f33b04a55585e2aeb16bb14df95b18c0bcf31933e5bf0c736c90bc054b9527fccb046540d3302a0f149ebeed7c6bcca0b986