Malware Analysis Report

2024-11-16 13:45

Sample ID 240628-bv1teawdrm
Target 8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878
SHA256 8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878
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

8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878

Threat Level: Known bad

The file 8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878 was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Vidar

Stealc

Detect Vidar Stealer

Downloads MZ/PE file

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Executes dropped EXE

Checks computer location settings

Checks installed software on the system

Accesses cryptocurrency files/wallets, possible credential harvesting

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Delays execution with timeout.exe

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 01:28

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 01:28

Reported

2024-06-28 01:31

Platform

win11-20240611-en

Max time kernel

90s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
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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\kat448B.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 4840 set thread context of 3652 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat448B.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\kat448B.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat448B.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 4840 wrote to memory of 3652 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat448B.tmp
PID 4840 wrote to memory of 3652 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat448B.tmp
PID 4840 wrote to memory of 3652 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat448B.tmp
PID 4840 wrote to memory of 3652 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat448B.tmp
PID 4840 wrote to memory of 3652 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat448B.tmp
PID 4840 wrote to memory of 3652 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat448B.tmp
PID 4840 wrote to memory of 3652 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat448B.tmp
PID 4840 wrote to memory of 3652 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat448B.tmp
PID 3652 wrote to memory of 4920 N/A C:\Users\Admin\AppData\Local\Temp\kat448B.tmp C:\Windows\SysWOW64\cmd.exe
PID 3652 wrote to memory of 4920 N/A C:\Users\Admin\AppData\Local\Temp\kat448B.tmp C:\Windows\SysWOW64\cmd.exe
PID 3652 wrote to memory of 4920 N/A C:\Users\Admin\AppData\Local\Temp\kat448B.tmp C:\Windows\SysWOW64\cmd.exe
PID 4920 wrote to memory of 2724 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4920 wrote to memory of 2724 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4920 wrote to memory of 2724 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe

"C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe"

C:\Users\Admin\AppData\Local\Temp\kat448B.tmp

C:\Users\Admin\AppData\Local\Temp\kat448B.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat448B.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 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.249.124.192.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 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

Files

memory/4840-0-0x0000000000840000-0x0000000000841000-memory.dmp

memory/4840-2-0x0000000004080000-0x0000000004190000-memory.dmp

memory/3652-4-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat448B.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/3652-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3652-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4840-9-0x0000000000400000-0x000000000058E000-memory.dmp

memory/3652-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3652-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3652-27-0x000000002F740000-0x000000002F99F000-memory.dmp

memory/3652-35-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3652-36-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3652-44-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3652-45-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3652-61-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3652-62-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3652-73-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3652-74-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3652-75-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3652-76-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 01:28

Reported

2024-06-28 01:31

Platform

win10v2004-20240508-en

Max time kernel

94s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
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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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat3F1C.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 4572 set thread context of 3156 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat3F1C.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\kat3F1C.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat3F1C.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 4572 wrote to memory of 3156 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp
PID 4572 wrote to memory of 3156 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp
PID 4572 wrote to memory of 3156 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp
PID 4572 wrote to memory of 3156 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp
PID 4572 wrote to memory of 3156 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp
PID 4572 wrote to memory of 3156 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp
PID 4572 wrote to memory of 3156 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp
PID 4572 wrote to memory of 3156 N/A C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp
PID 3156 wrote to memory of 3764 N/A C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp C:\Windows\SysWOW64\cmd.exe
PID 3156 wrote to memory of 3764 N/A C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp C:\Windows\SysWOW64\cmd.exe
PID 3156 wrote to memory of 3764 N/A C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp C:\Windows\SysWOW64\cmd.exe
PID 3764 wrote to memory of 4956 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3764 wrote to memory of 4956 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3764 wrote to memory of 4956 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe

"C:\Users\Admin\AppData\Local\Temp\8f41806362483dd6ba039dbc95d8dc6277243d238c4b1dc2f515ae7066c6f878.exe"

C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp

C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp" & rd /s /q "C:\ProgramData\FHIJJJKKJJDA" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.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 8.8.8.8:53 214.251.201.195.in-addr.arpa udp
US 8.8.8.8:53 41.249.124.192.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
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 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

memory/4572-0-0x0000000000780000-0x0000000000781000-memory.dmp

memory/4572-1-0x00000000041C0000-0x00000000042D0000-memory.dmp

memory/3156-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4572-10-0x0000000000400000-0x000000000058E000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat3F1C.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/3156-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3156-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3156-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3156-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3156-25-0x0000000022760000-0x00000000229BF000-memory.dmp

memory/3156-40-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3156-41-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3156-57-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3156-58-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3156-69-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3156-70-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3156-71-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3156-74-0x0000000000400000-0x0000000000648000-memory.dmp