Malware Analysis Report

2024-11-16 13:51

Sample ID 240628-g1s9eaxgjq
Target aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2
SHA256 aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2
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

aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2

Threat Level: Known bad

The file aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2 was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Vidar

Stealc

Detect Vidar Stealer

Checks computer location settings

Loads dropped DLL

Executes dropped EXE

Reads data files stored by FTP clients

Checks installed software on the system

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Checks processor information in registry

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Delays execution with timeout.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 06:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 06:16

Reported

2024-06-28 06:19

Platform

win7-20240508-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe"

Signatures

Detect Vidar Stealer

stealer
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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Stealc

stealer stealc

Vidar

stealer vidar

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat121A.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 2280 set thread context of 2268 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat121A.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\kat121A.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat121A.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\kat121A.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat121A.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat121A.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2280 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat121A.tmp
PID 2280 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat121A.tmp
PID 2280 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat121A.tmp
PID 2280 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat121A.tmp
PID 2280 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat121A.tmp
PID 2280 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat121A.tmp
PID 2280 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat121A.tmp
PID 2280 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat121A.tmp
PID 2280 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat121A.tmp
PID 2268 wrote to memory of 1236 N/A C:\Users\Admin\AppData\Local\Temp\kat121A.tmp C:\Windows\SysWOW64\cmd.exe
PID 2268 wrote to memory of 1236 N/A C:\Users\Admin\AppData\Local\Temp\kat121A.tmp C:\Windows\SysWOW64\cmd.exe
PID 2268 wrote to memory of 1236 N/A C:\Users\Admin\AppData\Local\Temp\kat121A.tmp C:\Windows\SysWOW64\cmd.exe
PID 2268 wrote to memory of 1236 N/A C:\Users\Admin\AppData\Local\Temp\kat121A.tmp C:\Windows\SysWOW64\cmd.exe
PID 1236 wrote to memory of 2592 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1236 wrote to memory of 2592 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1236 wrote to memory of 2592 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1236 wrote to memory of 2592 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe

"C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe"

C:\Users\Admin\AppData\Local\Temp\kat121A.tmp

C:\Users\Admin\AppData\Local\Temp\kat121A.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat121A.tmp" & rd /s /q "C:\ProgramData\DAAFIIJDAAAA" & 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/2280-0-0x0000000000220000-0x0000000000221000-memory.dmp

memory/2280-3-0x0000000003370000-0x0000000003480000-memory.dmp

\Users\Admin\AppData\Local\Temp\kat121A.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/2268-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2268-15-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2268-17-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2268-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2280-20-0x0000000000400000-0x000000000058E000-memory.dmp

memory/2268-18-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2268-13-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2268-11-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2268-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2268-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2268-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2268-26-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2268-27-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2268-28-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2268-32-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 06:16

Reported

2024-06-28 06:19

Platform

win10v2004-20240508-en

Max time kernel

39s

Max time network

49s

Command Line

"C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe"

Signatures

Detect Vidar Stealer

stealer
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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Stealc

stealer stealc

Vidar

stealer vidar

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4E7E.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 1140 set thread context of 1200 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat4E7E.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\kat4E7E.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat4E7E.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 1140 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp
PID 1140 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp
PID 1140 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp
PID 1140 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp
PID 1140 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp
PID 1140 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp
PID 1140 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp
PID 1140 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp
PID 1200 wrote to memory of 2860 N/A C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp C:\Windows\SysWOW64\cmd.exe
PID 1200 wrote to memory of 2860 N/A C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp C:\Windows\SysWOW64\cmd.exe
PID 1200 wrote to memory of 2860 N/A C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp C:\Windows\SysWOW64\cmd.exe
PID 2860 wrote to memory of 2812 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2860 wrote to memory of 2812 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2860 wrote to memory of 2812 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe

"C:\Users\Admin\AppData\Local\Temp\aece06d334289edfe5d916e7c2978902075106a8d5730228918dbd9a4db87cf2.exe"

C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp

C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp" & rd /s /q "C:\ProgramData\IECBAFCAAKJD" & 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/1140-0-0x0000000000750000-0x0000000000751000-memory.dmp

memory/1140-2-0x0000000004000000-0x0000000004110000-memory.dmp

memory/1200-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1140-9-0x0000000000400000-0x000000000058E000-memory.dmp

memory/1200-8-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat4E7E.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/1200-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1200-11-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1200-12-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1200-13-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1200-14-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1200-15-0x0000000000400000-0x0000000000648000-memory.dmp