Malware Analysis Report

2024-11-16 13:48

Sample ID 240629-dvmb5azdkb
Target aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21
SHA256 aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21
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: 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

aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21

Threat Level: Known bad

The file aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21 was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Vidar

Stealc

Detect Vidar Stealer

Downloads MZ/PE file

Reads user/profile data of web browsers

Executes dropped EXE

Checks computer location settings

Reads data files stored by FTP clients

Accesses cryptocurrency files/wallets, possible credential harvesting

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

2024-06-29 03:19

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-29 03:19

Reported

2024-06-29 03:22

Platform

win11-20240508-en

Max time kernel

90s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.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
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Stealc

stealer stealc

Vidar

stealer vidar

Downloads MZ/PE file

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat5208.tmp N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3596 set thread context of 3448 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat5208.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\kat5208.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat5208.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 3596 wrote to memory of 3448 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat5208.tmp
PID 3596 wrote to memory of 3448 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat5208.tmp
PID 3596 wrote to memory of 3448 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat5208.tmp
PID 3596 wrote to memory of 3448 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat5208.tmp
PID 3596 wrote to memory of 3448 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat5208.tmp
PID 3596 wrote to memory of 3448 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat5208.tmp
PID 3596 wrote to memory of 3448 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat5208.tmp
PID 3596 wrote to memory of 3448 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat5208.tmp
PID 3448 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\kat5208.tmp C:\Windows\SysWOW64\cmd.exe
PID 3448 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\kat5208.tmp C:\Windows\SysWOW64\cmd.exe
PID 3448 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\kat5208.tmp C:\Windows\SysWOW64\cmd.exe
PID 2928 wrote to memory of 5044 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2928 wrote to memory of 5044 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2928 wrote to memory of 5044 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe

"C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe"

C:\Users\Admin\AppData\Local\Temp\kat5208.tmp

C:\Users\Admin\AppData\Local\Temp\kat5208.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat5208.tmp" & rd /s /q "C:\ProgramData\KFCFBFHIEBKJ" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 214.251.201.195.in-addr.arpa udp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 207.180.253.128:80 tea.arpdabl.org tcp
IE 52.111.236.22:443 tcp

Files

memory/3596-0-0x0000000002370000-0x0000000002371000-memory.dmp

memory/3596-1-0x0000000004010000-0x0000000004120000-memory.dmp

memory/3448-4-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat5208.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/3448-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3448-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3596-9-0x0000000000400000-0x0000000000635000-memory.dmp

memory/3448-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3448-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3448-27-0x000000002F700000-0x000000002F95F000-memory.dmp

memory/3448-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3448-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3448-59-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3448-60-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3448-71-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3448-72-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3448-73-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3448-74-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-29 03:19

Reported

2024-06-29 03:22

Platform

win10v2004-20240611-en

Max time kernel

128s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
N/A N/A N/A N/A
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Stealc

stealer stealc

Vidar

stealer vidar

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1472 set thread context of 2680 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat29CF.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\kat29CF.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat29CF.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 1472 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp
PID 1472 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp
PID 1472 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp
PID 1472 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp
PID 1472 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp
PID 1472 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp
PID 1472 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp
PID 1472 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp
PID 2680 wrote to memory of 3416 N/A C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp C:\Windows\SysWOW64\cmd.exe
PID 2680 wrote to memory of 3416 N/A C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp C:\Windows\SysWOW64\cmd.exe
PID 2680 wrote to memory of 3416 N/A C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp C:\Windows\SysWOW64\cmd.exe
PID 3416 wrote to memory of 3988 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3416 wrote to memory of 3988 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3416 wrote to memory of 3988 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe

"C:\Users\Admin\AppData\Local\Temp\aa2661bda5901e33e47a8f13acf4c150c9ce93d14ddc5ba5a7df2aec375cfd21.exe"

C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp

C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp" & rd /s /q "C:\ProgramData\BFBGHDGCFHID" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 36.249.124.192.in-addr.arpa udp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 214.251.201.195.in-addr.arpa udp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 tea.arpdabl.org udp
DE 207.180.253.128:80 tea.arpdabl.org tcp
US 8.8.8.8:53 128.253.180.207.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 35.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp

Files

memory/1472-0-0x0000000002290000-0x0000000002291000-memory.dmp

memory/1472-1-0x00000000029E0000-0x0000000002AF0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat29CF.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/2680-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1472-9-0x0000000000400000-0x0000000000635000-memory.dmp

memory/2680-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2680-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2680-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2680-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2680-25-0x00000000202C0000-0x000000002051F000-memory.dmp

memory/2680-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2680-34-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2680-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2680-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2680-59-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2680-60-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2680-71-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2680-72-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2680-73-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2680-76-0x0000000000400000-0x0000000000648000-memory.dmp