Malware Analysis Report

2024-12-07 19:32

Sample ID 241114-lmax5awndz
Target 7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d
SHA256 7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d
Tags
stealc logsdiller 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

7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d

Threat Level: Known bad

The file 7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d was found to be: Known bad.

Malicious Activity Summary

stealc logsdiller credential_access discovery spyware stealer

Stealc

Stealc family

Loads dropped DLL

Checks computer location settings

Unsecured Credentials: Credentials In Files

Reads data files stored by FTP clients

Deletes itself

Checks installed software on the system

System Location Discovery: System Language Discovery

Program crash

Enumerates physical storage devices

Unsigned PE

Checks processor information in registry

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-14 09:38

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-14 09:38

Reported

2024-11-14 09:41

Platform

win7-20240903-en

Max time kernel

117s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.exe"

Signatures

Stealc

stealer stealc

Stealc family

stealc

Deletes itself

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

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\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.exe N/A

Delays execution with timeout.exe

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.exe

"C:\Users\Admin\AppData\Local\Temp\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.exe" & del "C:\ProgramData\*.dll"" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 5

Network

Country Destination Domain Proto
NL 77.220.212.32:80 77.220.212.32 tcp

Files

memory/1632-1-0x0000000002C50000-0x0000000002D50000-memory.dmp

memory/1632-2-0x00000000002D0000-0x00000000003AA000-memory.dmp

memory/1632-3-0x0000000000400000-0x00000000006ED000-memory.dmp

\ProgramData\chrome.dll

MD5 eda18948a989176f4eebb175ce806255
SHA1 ff22a3d5f5fb705137f233c36622c79eab995897
SHA256 81a4f37c5495800b7cc46aea6535d9180dadb5c151db6f1fd1968d1cd8c1eeb4
SHA512 160ed9990c37a4753fc0f5111c94414568654afbedc05308308197df2a99594f2d5d8fe511fd2279543a869ed20248e603d88a0b9b8fb119e8e6131b0c52ff85

memory/1632-11-0x0000000002C50000-0x0000000002D50000-memory.dmp

memory/1632-10-0x00000000002D0000-0x00000000003AA000-memory.dmp

memory/1632-12-0x0000000000400000-0x00000000006ED000-memory.dmp

memory/1632-9-0x0000000000400000-0x0000000002BAE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-14 09:38

Reported

2024-11-14 09:41

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

143s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.exe"

Signatures

Stealc

stealer stealc

Stealc family

stealc

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\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.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

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\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.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\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.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\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.exe

"C:\Users\Admin\AppData\Local\Temp\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\7a3c1f0a826eec9b77bbe25a3da2db497d2005238c494190f075b0a22b21006d.exe" & del "C:\ProgramData\*.dll"" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3300 -ip 3300

C:\Windows\SysWOW64\timeout.exe

timeout /t 5

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3300 -s 1484

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
NL 77.220.212.32:80 77.220.212.32 tcp
US 8.8.8.8:53 32.212.220.77.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/3300-1-0x0000000002DC0000-0x0000000002EC0000-memory.dmp

memory/3300-2-0x0000000004860000-0x000000000493A000-memory.dmp

memory/3300-3-0x0000000000400000-0x00000000006ED000-memory.dmp

C:\ProgramData\chrome.dll

MD5 eda18948a989176f4eebb175ce806255
SHA1 ff22a3d5f5fb705137f233c36622c79eab995897
SHA256 81a4f37c5495800b7cc46aea6535d9180dadb5c151db6f1fd1968d1cd8c1eeb4
SHA512 160ed9990c37a4753fc0f5111c94414568654afbedc05308308197df2a99594f2d5d8fe511fd2279543a869ed20248e603d88a0b9b8fb119e8e6131b0c52ff85

memory/3300-12-0x0000000000400000-0x00000000006ED000-memory.dmp

memory/3300-11-0x0000000004860000-0x000000000493A000-memory.dmp

memory/3300-10-0x0000000000400000-0x0000000002BAE000-memory.dmp