Malware Analysis Report

2024-11-16 13:49

Sample ID 240629-bqeelsxejh
Target 5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe
SHA256 5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e
Tags
stealc vidar 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

5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e

Threat Level: Known bad

The file 5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Vidar

Stealc

Detects Windows executables referencing non-Windows User-Agents

Executes dropped EXE

Reads data files stored by FTP clients

Loads dropped DLL

Checks computer location settings

Checks installed software on the system

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-29 01:20

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-29 01:20

Reported

2024-06-29 01:23

Platform

win7-20240508-en

Max time kernel

122s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
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Stealc

stealer stealc

Vidar

stealer vidar

Detects Windows executables referencing non-Windows User-Agents

Description Indicator Process Target
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Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp N/A

Reads data files stored by FTP clients

spyware stealer

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2940 set thread context of 2068 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp 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\kat1C66.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2940 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp
PID 2940 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp
PID 2940 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp
PID 2940 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp
PID 2940 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp
PID 2940 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp
PID 2940 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp
PID 2940 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp
PID 2940 wrote to memory of 2068 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp
PID 2068 wrote to memory of 2988 N/A C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp C:\Windows\SysWOW64\cmd.exe
PID 2068 wrote to memory of 2988 N/A C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp C:\Windows\SysWOW64\cmd.exe
PID 2068 wrote to memory of 2988 N/A C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp C:\Windows\SysWOW64\cmd.exe
PID 2068 wrote to memory of 2988 N/A C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp C:\Windows\SysWOW64\cmd.exe
PID 2988 wrote to memory of 2040 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2988 wrote to memory of 2040 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2988 wrote to memory of 2040 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2988 wrote to memory of 2040 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe

"C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe"

C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp

C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp" & rd /s /q "C:\ProgramData\HJDBFBKKJDHJ" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
US 8.8.8.8:53 steamcommunity.com udp
US 8.8.8.8:53 tea.arpdabl.org udp

Files

memory/2940-0-0x00000000001B0000-0x00000000001B1000-memory.dmp

memory/2940-1-0x00000000021E0000-0x00000000022F0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/2068-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2068-11-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2068-19-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2068-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2940-23-0x0000000000400000-0x0000000000635000-memory.dmp

memory/2068-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2068-17-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2068-13-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2068-15-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2068-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2068-26-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2068-27-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2068-28-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2068-29-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2068-33-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-29 01:20

Reported

2024-06-29 01:23

Platform

win10v2004-20240508-en

Max time kernel

39s

Max time network

48s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
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Stealc

stealer stealc

Vidar

stealer vidar

Detects Windows executables referencing non-Windows User-Agents

Description Indicator Process Target
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Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp N/A

Reads data files stored by FTP clients

spyware stealer

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3316 set thread context of 1676 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp N/A

Delays execution with timeout.exe

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3316 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp
PID 3316 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp
PID 3316 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp
PID 3316 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp
PID 3316 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp
PID 3316 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp
PID 3316 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp
PID 3316 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp
PID 1676 wrote to memory of 3392 N/A C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp C:\Windows\SysWOW64\cmd.exe
PID 1676 wrote to memory of 3392 N/A C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp C:\Windows\SysWOW64\cmd.exe
PID 1676 wrote to memory of 3392 N/A C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp C:\Windows\SysWOW64\cmd.exe
PID 3392 wrote to memory of 1884 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3392 wrote to memory of 1884 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3392 wrote to memory of 1884 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe

"C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe"

C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp

C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp" & rd /s /q "C:\ProgramData\HJDBAFIECGHC" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
US 8.8.8.8:53 steamcommunity.com udp
US 8.8.8.8:53 tea.arpdabl.org udp

Files

memory/3316-0-0x00000000007E0000-0x00000000007E1000-memory.dmp

memory/3316-2-0x0000000004030000-0x0000000004140000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat4E9D.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/1676-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1676-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1676-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3316-10-0x0000000000400000-0x0000000000635000-memory.dmp

memory/1676-11-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1676-12-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1676-13-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1676-14-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1676-15-0x0000000000400000-0x0000000000648000-memory.dmp