Malware Analysis Report

2024-11-16 13:51

Sample ID 240628-dcjtaaxdqb
Target 99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e
SHA256 99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e
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

99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e

Threat Level: Known bad

The file 99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Vidar

Detect Vidar Stealer

Stealc

Downloads MZ/PE file

Executes dropped EXE

Reads data files stored by FTP clients

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

Unsigned PE

Enumerates physical storage devices

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

2024-06-28 02:51

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 02:51

Reported

2024-06-28 02:54

Platform

win10v2004-20240508-en

Max time kernel

93s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\kat5227.tmp N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat5227.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 3884 set thread context of 1932 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat5227.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\kat5227.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat5227.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 3884 wrote to memory of 1932 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat5227.tmp
PID 3884 wrote to memory of 1932 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat5227.tmp
PID 3884 wrote to memory of 1932 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat5227.tmp
PID 3884 wrote to memory of 1932 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat5227.tmp
PID 3884 wrote to memory of 1932 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat5227.tmp
PID 3884 wrote to memory of 1932 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat5227.tmp
PID 3884 wrote to memory of 1932 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat5227.tmp
PID 3884 wrote to memory of 1932 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat5227.tmp
PID 1932 wrote to memory of 1436 N/A C:\Users\Admin\AppData\Local\Temp\kat5227.tmp C:\Windows\SysWOW64\cmd.exe
PID 1932 wrote to memory of 1436 N/A C:\Users\Admin\AppData\Local\Temp\kat5227.tmp C:\Windows\SysWOW64\cmd.exe
PID 1932 wrote to memory of 1436 N/A C:\Users\Admin\AppData\Local\Temp\kat5227.tmp C:\Windows\SysWOW64\cmd.exe
PID 1436 wrote to memory of 5028 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1436 wrote to memory of 5028 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1436 wrote to memory of 5028 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe

"C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe"

C:\Users\Admin\AppData\Local\Temp\kat5227.tmp

C:\Users\Admin\AppData\Local\Temp\kat5227.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat5227.tmp" & rd /s /q "C:\ProgramData\HIDHDGDHJEGH" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.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
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
US 8.8.8.8:53 28.118.140.52.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
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 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp

Files

memory/3884-0-0x00000000021C0000-0x00000000021C1000-memory.dmp

memory/3884-1-0x0000000003F90000-0x00000000040A0000-memory.dmp

memory/1932-8-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat5227.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/1932-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3884-9-0x0000000000400000-0x000000000058E000-memory.dmp

memory/1932-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1932-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1932-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1932-25-0x00000000226F0000-0x000000002294F000-memory.dmp

memory/1932-40-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1932-41-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1932-57-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1932-58-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1932-69-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1932-70-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1932-73-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 02:51

Reported

2024-06-28 02:54

Platform

win11-20240611-en

Max time kernel

140s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.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
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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\kat564E.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 1160 set thread context of 3176 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat564E.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\kat564E.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat564E.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 1160 wrote to memory of 3176 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat564E.tmp
PID 1160 wrote to memory of 3176 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat564E.tmp
PID 1160 wrote to memory of 3176 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat564E.tmp
PID 1160 wrote to memory of 3176 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat564E.tmp
PID 1160 wrote to memory of 3176 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat564E.tmp
PID 1160 wrote to memory of 3176 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat564E.tmp
PID 1160 wrote to memory of 3176 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat564E.tmp
PID 1160 wrote to memory of 3176 N/A C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe C:\Users\Admin\AppData\Local\Temp\kat564E.tmp
PID 3176 wrote to memory of 3412 N/A C:\Users\Admin\AppData\Local\Temp\kat564E.tmp C:\Windows\SysWOW64\cmd.exe
PID 3176 wrote to memory of 3412 N/A C:\Users\Admin\AppData\Local\Temp\kat564E.tmp C:\Windows\SysWOW64\cmd.exe
PID 3176 wrote to memory of 3412 N/A C:\Users\Admin\AppData\Local\Temp\kat564E.tmp C:\Windows\SysWOW64\cmd.exe
PID 3412 wrote to memory of 2992 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3412 wrote to memory of 2992 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3412 wrote to memory of 2992 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe

"C:\Users\Admin\AppData\Local\Temp\99805a59ffd0d78f5f5ac821015aafafd41a5f679e29d3da311e22bdc75daf1e.exe"

C:\Users\Admin\AppData\Local\Temp\kat564E.tmp

C:\Users\Admin\AppData\Local\Temp\kat564E.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat564E.tmp" & rd /s /q "C:\ProgramData\GHDHJEBFBFHJ" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa 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 150.171.28.10:443 tse1.mm.bing.net tcp
NL 149.154.167.99:443 t.me 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 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/1160-0-0x00000000022F0000-0x00000000022F1000-memory.dmp

memory/1160-1-0x0000000002980000-0x0000000002A90000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat564E.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/3176-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3176-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1160-10-0x0000000000400000-0x000000000058E000-memory.dmp

memory/3176-7-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3176-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3176-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3176-25-0x0000000020190000-0x00000000203EF000-memory.dmp

memory/3176-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3176-34-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3176-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3176-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3176-59-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3176-60-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3176-71-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3176-72-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3176-73-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3176-74-0x0000000000400000-0x0000000000648000-memory.dmp