Malware Analysis Report

2024-11-16 13:50

Sample ID 240628-fhb2qssbqh
Target 644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b
SHA256 644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b
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

644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b

Threat Level: Known bad

The file 644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b 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 user/profile data of web browsers

Checks installed software on the system

Suspicious use of SetThreadContext

Unsigned PE

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 04:51

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 04:51

Reported

2024-06-28 04:54

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4844.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 4600 set thread context of 2576 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat4844.tmp

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat4844.tmp N/A
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\kat4844.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4600 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat4844.tmp
PID 4600 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat4844.tmp
PID 4600 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat4844.tmp
PID 4600 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat4844.tmp
PID 4600 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat4844.tmp
PID 4600 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat4844.tmp
PID 4600 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat4844.tmp
PID 4600 wrote to memory of 2576 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat4844.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe

"C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe"

C:\Users\Admin\AppData\Local\Temp\kat4844.tmp

C:\Users\Admin\AppData\Local\Temp\kat4844.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.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 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 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
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 21.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 94.65.42.20.in-addr.arpa udp

Files

memory/4600-0-0x00000000022F0000-0x00000000022F1000-memory.dmp

memory/4600-1-0x0000000003F70000-0x0000000004080000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat4844.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/2576-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4600-10-0x0000000000400000-0x000000000058E000-memory.dmp

memory/2576-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2576-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2576-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2576-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2576-25-0x0000000022830000-0x0000000022A8F000-memory.dmp

memory/2576-40-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2576-41-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 04:51

Reported

2024-06-28 04:54

Platform

win11-20240508-en

Max time kernel

90s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.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\kat6FA2.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 2152 set thread context of 3880 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat6FA2.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\kat6FA2.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat6FA2.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2152 wrote to memory of 3880 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat6FA2.tmp
PID 2152 wrote to memory of 3880 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat6FA2.tmp
PID 2152 wrote to memory of 3880 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat6FA2.tmp
PID 2152 wrote to memory of 3880 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat6FA2.tmp
PID 2152 wrote to memory of 3880 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat6FA2.tmp
PID 2152 wrote to memory of 3880 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat6FA2.tmp
PID 2152 wrote to memory of 3880 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat6FA2.tmp
PID 2152 wrote to memory of 3880 N/A C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe C:\Users\Admin\AppData\Local\Temp\kat6FA2.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe

"C:\Users\Admin\AppData\Local\Temp\644bf4c4a487c090b5a026a45edd34d15d4b18a18eb3633867ac7cb524677c7b.exe"

C:\Users\Admin\AppData\Local\Temp\kat6FA2.tmp

C:\Users\Admin\AppData\Local\Temp\kat6FA2.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 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 24.249.124.192.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
NL 52.111.243.30:443 tcp

Files

memory/2152-0-0x0000000000850000-0x0000000000851000-memory.dmp

memory/2152-2-0x0000000003FA0000-0x00000000040B0000-memory.dmp

memory/3880-4-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat6FA2.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/3880-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3880-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2152-9-0x0000000000400000-0x000000000058E000-memory.dmp

memory/3880-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3880-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3880-27-0x000000002F6A0000-0x000000002F8FF000-memory.dmp

memory/3880-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3880-43-0x0000000000400000-0x0000000000648000-memory.dmp