Malware Analysis Report

2024-12-07 19:16

Sample ID 241114-hchy7svlay
Target d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8
SHA256 d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8
Tags
stealc tale credential_access discovery evasion 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

d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8

Threat Level: Known bad

The file d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8 was found to be: Known bad.

Malicious Activity Summary

stealc tale credential_access discovery evasion spyware stealer

Stealc family

Stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Checks BIOS information in registry

Checks computer location settings

Reads data files stored by FTP clients

Unsecured Credentials: Credentials In Files

Deletes itself

Identifies Wine through registry keys

Loads dropped DLL

Checks installed software on the system

Suspicious use of NtSetInformationThreadHideFromDebugger

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Delays execution with timeout.exe

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-14 06:35

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-14 06:35

Reported

2024-11-14 06:37

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

136s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe"

Signatures

Stealc

stealer stealc

Stealc family

stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe N/A

Reads data files stored by FTP clients

spyware stealer

Unsecured Credentials: Credentials In Files

credential_access stealer

Checks installed software on the system

discovery

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.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:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\timeout.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe N/A

Delays execution with timeout.exe

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

Processes

C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe

"C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe" & del "C:\ProgramData\*.dll"" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 5

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
RU 185.215.113.206:80 185.215.113.206 tcp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 206.113.215.185.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/3640-0-0x0000000000D20000-0x000000000145D000-memory.dmp

memory/3640-1-0x0000000077194000-0x0000000077196000-memory.dmp

memory/3640-2-0x0000000000D21000-0x0000000000D89000-memory.dmp

memory/3640-3-0x0000000000D20000-0x000000000145D000-memory.dmp

C:\ProgramData\chrome.dll

MD5 eda18948a989176f4eebb175ce806255
SHA1 ff22a3d5f5fb705137f233c36622c79eab995897
SHA256 81a4f37c5495800b7cc46aea6535d9180dadb5c151db6f1fd1968d1cd8c1eeb4
SHA512 160ed9990c37a4753fc0f5111c94414568654afbedc05308308197df2a99594f2d5d8fe511fd2279543a869ed20248e603d88a0b9b8fb119e8e6131b0c52ff85

memory/3640-9-0x0000000000D20000-0x000000000145D000-memory.dmp

memory/3640-11-0x0000000000D20000-0x000000000145D000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-14 06:35

Reported

2024-11-14 06:37

Platform

win7-20240708-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe"

Signatures

Stealc

stealer stealc

Stealc family

stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe N/A

Deletes itself

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

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe N/A

Reads data files stored by FTP clients

spyware stealer

Unsecured Credentials: Credentials In Files

credential_access stealer

Checks installed software on the system

discovery

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.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\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\timeout.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe N/A

Delays execution with timeout.exe

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

Processes

C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe

"C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\d33bf5ccd141c26d9e218fb573b078cdcd54eb890d2a32306a0eea649750aad8.exe" & del "C:\ProgramData\*.dll"" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 5

Network

Country Destination Domain Proto
RU 185.215.113.206:80 185.215.113.206 tcp

Files

memory/2368-0-0x0000000000B40000-0x000000000127D000-memory.dmp

memory/2368-1-0x0000000077620000-0x0000000077622000-memory.dmp

memory/2368-2-0x0000000000B41000-0x0000000000BA9000-memory.dmp

memory/2368-3-0x0000000000B40000-0x000000000127D000-memory.dmp

\ProgramData\chrome.dll

MD5 eda18948a989176f4eebb175ce806255
SHA1 ff22a3d5f5fb705137f233c36622c79eab995897
SHA256 81a4f37c5495800b7cc46aea6535d9180dadb5c151db6f1fd1968d1cd8c1eeb4
SHA512 160ed9990c37a4753fc0f5111c94414568654afbedc05308308197df2a99594f2d5d8fe511fd2279543a869ed20248e603d88a0b9b8fb119e8e6131b0c52ff85

memory/2368-8-0x0000000000B40000-0x000000000127D000-memory.dmp