Malware Analysis Report

2024-11-16 13:47

Sample ID 240628-yvmm4stejk
Target bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb
SHA256 bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb
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

bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb

Threat Level: Known bad

The file bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Stealc

Detect Vidar Stealer

Vidar

Downloads MZ/PE file

Executes dropped EXE

Reads user/profile data of web browsers

Checks installed software on the system

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of WriteProcessMemory

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 20:06

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 20:06

Reported

2024-06-28 20:09

Platform

win10v2004-20240611-en

Max time kernel

148s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.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

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\kat590D.tmp N/A

Reads user/profile data of web browsers

spyware stealer

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4844 set thread context of 1612 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat590D.tmp

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\kat590D.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat590D.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4844 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat590D.tmp
PID 4844 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat590D.tmp
PID 4844 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat590D.tmp
PID 4844 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat590D.tmp
PID 4844 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat590D.tmp
PID 4844 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat590D.tmp
PID 4844 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat590D.tmp
PID 4844 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat590D.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe

"C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe"

C:\Users\Admin\AppData\Local\Temp\kat590D.tmp

C:\Users\Admin\AppData\Local\Temp\kat590D.tmp

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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
BE 23.41.178.27:443 www.bing.com tcp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 27.178.41.23.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 24.249.124.192.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
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.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 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 18.173.189.20.in-addr.arpa udp

Files

memory/4844-0-0x00000000008F0000-0x00000000008F1000-memory.dmp

memory/4844-1-0x0000000002A90000-0x0000000002BA0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat590D.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/1612-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1612-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4844-10-0x0000000000400000-0x0000000000635000-memory.dmp

memory/1612-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1612-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1612-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1612-25-0x00000000202F0000-0x000000002054F000-memory.dmp

memory/1612-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1612-34-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 20:06

Reported

2024-06-28 20:09

Platform

win11-20240611-en

Max time kernel

147s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.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

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\kat350A.tmp N/A

Reads user/profile data of web browsers

spyware stealer

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2432 set thread context of 5036 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat350A.tmp

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\kat350A.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat350A.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2432 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat350A.tmp
PID 2432 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat350A.tmp
PID 2432 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat350A.tmp
PID 2432 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat350A.tmp
PID 2432 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat350A.tmp
PID 2432 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat350A.tmp
PID 2432 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat350A.tmp
PID 2432 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe C:\Users\Admin\AppData\Local\Temp\kat350A.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe

"C:\Users\Admin\AppData\Local\Temp\bf16932ed80e384ae7291cb49d0b3a69979091f61f9533b557c58f02193f87cb.exe"

C:\Users\Admin\AppData\Local\Temp\kat350A.tmp

C:\Users\Admin\AppData\Local\Temp\kat350A.tmp

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
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
IE 52.111.236.22:443 tcp

Files

memory/2432-0-0x0000000002490000-0x0000000002491000-memory.dmp

memory/2432-2-0x0000000004100000-0x0000000004210000-memory.dmp

memory/5036-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5036-9-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat350A.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/5036-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2432-10-0x0000000000400000-0x0000000000635000-memory.dmp

memory/5036-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5036-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5036-28-0x00000000228C0000-0x0000000022B1F000-memory.dmp

memory/5036-35-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5036-36-0x0000000000400000-0x0000000000648000-memory.dmp