Malware Analysis Report

2024-11-16 13:50

Sample ID 240628-a2x6estgjn
Target f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104
SHA256 f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104
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

f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104

Threat Level: Known bad

The file f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104 was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Stealc

Detect Vidar Stealer

Vidar

Downloads MZ/PE file

Reads data files stored by FTP clients

Executes dropped EXE

Reads user/profile data of web browsers

Checks computer location settings

Checks installed software on the system

Accesses cryptocurrency files/wallets, possible credential harvesting

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Checks processor information in registry

Delays execution with timeout.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 00:43

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 00:43

Reported

2024-06-28 00:45

Platform

win10v2004-20240611-en

Max time kernel

133s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.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-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat3A98.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 4348 set thread context of 5068 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat3A98.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\kat3A98.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat3A98.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 4348 wrote to memory of 5068 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp
PID 4348 wrote to memory of 5068 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp
PID 4348 wrote to memory of 5068 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp
PID 4348 wrote to memory of 5068 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp
PID 4348 wrote to memory of 5068 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp
PID 4348 wrote to memory of 5068 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp
PID 4348 wrote to memory of 5068 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp
PID 4348 wrote to memory of 5068 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp
PID 5068 wrote to memory of 3852 N/A C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp C:\Windows\SysWOW64\cmd.exe
PID 5068 wrote to memory of 3852 N/A C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp C:\Windows\SysWOW64\cmd.exe
PID 5068 wrote to memory of 3852 N/A C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp C:\Windows\SysWOW64\cmd.exe
PID 3852 wrote to memory of 3180 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3852 wrote to memory of 3180 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3852 wrote to memory of 3180 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe

"C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe"

C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp

C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp" & rd /s /q "C:\ProgramData\GCGHIIDHCGHC" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.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 23.249.124.192.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
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 tcp
DE 195.201.251.214:9000 tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
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 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/4348-0-0x00000000007A0000-0x00000000007A1000-memory.dmp

memory/4348-1-0x0000000002AC0000-0x0000000002BD0000-memory.dmp

memory/5068-4-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat3A98.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/5068-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4348-10-0x0000000000400000-0x000000000058E000-memory.dmp

memory/5068-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5068-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5068-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5068-25-0x00000000227A0000-0x00000000229FF000-memory.dmp

memory/5068-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5068-34-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5068-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5068-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5068-59-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5068-60-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5068-71-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5068-72-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5068-73-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5068-76-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 00:43

Reported

2024-06-28 00:45

Platform

win11-20240611-en

Max time kernel

92s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat70EA.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 1372 set thread context of 3980 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat70EA.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\kat70EA.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat70EA.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 1372 wrote to memory of 3980 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat70EA.tmp
PID 1372 wrote to memory of 3980 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat70EA.tmp
PID 1372 wrote to memory of 3980 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat70EA.tmp
PID 1372 wrote to memory of 3980 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat70EA.tmp
PID 1372 wrote to memory of 3980 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat70EA.tmp
PID 1372 wrote to memory of 3980 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat70EA.tmp
PID 1372 wrote to memory of 3980 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat70EA.tmp
PID 1372 wrote to memory of 3980 N/A C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe C:\Users\Admin\AppData\Local\Temp\kat70EA.tmp
PID 3980 wrote to memory of 2944 N/A C:\Users\Admin\AppData\Local\Temp\kat70EA.tmp C:\Windows\SysWOW64\cmd.exe
PID 3980 wrote to memory of 2944 N/A C:\Users\Admin\AppData\Local\Temp\kat70EA.tmp C:\Windows\SysWOW64\cmd.exe
PID 3980 wrote to memory of 2944 N/A C:\Users\Admin\AppData\Local\Temp\kat70EA.tmp C:\Windows\SysWOW64\cmd.exe
PID 2944 wrote to memory of 1944 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2944 wrote to memory of 1944 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2944 wrote to memory of 1944 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe

"C:\Users\Admin\AppData\Local\Temp\f74c3f05266b3dbd3b9a0edf2bc3bb0b05c064536270bc3383b37c09781da104.exe"

C:\Users\Admin\AppData\Local\Temp\kat70EA.tmp

C:\Users\Admin\AppData\Local\Temp\kat70EA.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat70EA.tmp" & rd /s /q "C:\ProgramData\FBKJKEHIJECG" & 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 24.249.124.192.in-addr.arpa udp
US 8.8.8.8:53 80.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 99.167.154.149.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/1372-0-0x00000000024E0000-0x00000000024E1000-memory.dmp

memory/1372-2-0x0000000003FA0000-0x00000000040B0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat70EA.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/3980-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3980-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3980-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1372-10-0x0000000000400000-0x000000000058E000-memory.dmp

memory/3980-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3980-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3980-27-0x000000002D120000-0x000000002D37F000-memory.dmp

memory/3980-35-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3980-36-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3980-44-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3980-45-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3980-61-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3980-62-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3980-73-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3980-74-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3980-75-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3980-78-0x0000000000400000-0x0000000000648000-memory.dmp