Malware Analysis Report

2025-01-02 03:02

Sample ID 240814-gmavxaxfqh
Target a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792
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 a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792 was found to be: Known bad.

Malicious Activity Summary

remotehost remcos collection credential_access discovery spyware stealer

Remcos family

Credentials from Password Stores: Credentials from Web Browsers

NirSoft WebBrowserPassView

Detected Nirsoft tools

NirSoft MailPassView

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 WriteProcessMemory

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-14 05:54

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 05:54

Reported

2024-08-14 05:57

Platform

win7-20240704-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.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-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.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\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2304 wrote to memory of 2780 N/A C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe
PID 2304 wrote to memory of 2780 N/A C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe
PID 2304 wrote to memory of 2780 N/A C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe
PID 2304 wrote to memory of 2780 N/A C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe
PID 2304 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe
PID 2304 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe
PID 2304 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe
PID 2304 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe
PID 2304 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe
PID 2304 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe
PID 2304 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe
PID 2304 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe

"C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe"

C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe

C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe /stext "C:\Users\Admin\AppData\Local\Temp\jiyssxpsyfmlirsevsdadjiakorniy"

C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe

C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe /stext "C:\Users\Admin\AppData\Local\Temp\tcddsqaumneylxgimdpcgodjldjojjylt"

C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe

C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe /stext "C:\Users\Admin\AppData\Local\Temp\weivt"

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/2848-8-0x0000000000400000-0x0000000000457000-memory.dmp

memory/2780-7-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2784-11-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2848-10-0x0000000000400000-0x0000000000457000-memory.dmp

memory/2780-9-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2784-15-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2784-14-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2784-17-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2784-13-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2848-6-0x0000000000400000-0x0000000000457000-memory.dmp

memory/2848-4-0x0000000000400000-0x0000000000457000-memory.dmp

memory/2780-3-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2780-1-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2780-22-0x0000000000400000-0x0000000000478000-memory.dmp

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

MD5 f3b25701fe362ec84616a93a45ce9998
SHA1 d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA512 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

memory/2848-25-0x0000000000400000-0x0000000000457000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-14 05:54

Reported

2024-08-14 05:57

Platform

win10v2004-20240802-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe"

Signatures

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\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe

"C:\Users\Admin\AppData\Local\Temp\a566a496a4d428c0b6726e71b29db5a425eab5b2d962ff5ad9271d8537fad792.exe"

Network

Country Destination Domain Proto
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 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.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 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

N/A