Malware Analysis Report

2024-12-07 19:22

Sample ID 241114-khe6lsweka
Target a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac
SHA256 a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac
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: 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

a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac

Threat Level: Known bad

The file a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac was found to be: Known bad.

Malicious Activity Summary

stealc tale credential_access discovery evasion spyware stealer

Stealc

Stealc family

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

Loads dropped DLL

Deletes itself

Identifies Wine through registry keys

Unsecured Credentials: Credentials In Files

Reads data files stored by FTP clients

Checks BIOS information in registry

Checks computer location settings

Checks installed software on the system

Suspicious use of NtSetInformationThreadHideFromDebugger

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Delays execution with timeout.exe

Suspicious use of WriteProcessMemory

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-14 08:35

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-14 08:35

Reported

2024-11-14 08:38

Platform

win7-20240903-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.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\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.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\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.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\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.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\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.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\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.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\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.exe

"C:\Users\Admin\AppData\Local\Temp\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.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/2476-0-0x00000000003F0000-0x0000000000B21000-memory.dmp

memory/2476-1-0x0000000077AB0000-0x0000000077AB2000-memory.dmp

memory/2476-2-0x00000000003F1000-0x0000000000459000-memory.dmp

memory/2476-3-0x00000000003F0000-0x0000000000B21000-memory.dmp

\ProgramData\chrome.dll

MD5 eda18948a989176f4eebb175ce806255
SHA1 ff22a3d5f5fb705137f233c36622c79eab995897
SHA256 81a4f37c5495800b7cc46aea6535d9180dadb5c151db6f1fd1968d1cd8c1eeb4
SHA512 160ed9990c37a4753fc0f5111c94414568654afbedc05308308197df2a99594f2d5d8fe511fd2279543a869ed20248e603d88a0b9b8fb119e8e6131b0c52ff85

memory/2476-7-0x00000000003F0000-0x0000000000B21000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-14 08:35

Reported

2024-11-14 08:38

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.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\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.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\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.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\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.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\timeout.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.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\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.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\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.exe

"C:\Users\Admin\AppData\Local\Temp\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\a9815da28d050524ff8fe237b04c6ccd5fdcc3dc0cf55216cea114fcffb5bdac.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
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 206.113.215.185.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.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 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp

Files

memory/3008-0-0x00000000007C0000-0x0000000000EF1000-memory.dmp

memory/3008-1-0x0000000077D14000-0x0000000077D16000-memory.dmp

memory/3008-2-0x00000000007C1000-0x0000000000829000-memory.dmp

memory/3008-3-0x00000000007C0000-0x0000000000EF1000-memory.dmp

C:\ProgramData\chrome.dll

MD5 eda18948a989176f4eebb175ce806255
SHA1 ff22a3d5f5fb705137f233c36622c79eab995897
SHA256 81a4f37c5495800b7cc46aea6535d9180dadb5c151db6f1fd1968d1cd8c1eeb4
SHA512 160ed9990c37a4753fc0f5111c94414568654afbedc05308308197df2a99594f2d5d8fe511fd2279543a869ed20248e603d88a0b9b8fb119e8e6131b0c52ff85

memory/3008-10-0x00000000007C0000-0x0000000000EF1000-memory.dmp