Malware Analysis Report

2024-11-16 13:43

Sample ID 240607-kw3ttseh83
Target fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e
SHA256 fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e
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

fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e

Threat Level: Known bad

The file fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e 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

Suspicious use of WriteProcessMemory

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-07 08:57

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-07 08:57

Reported

2024-06-07 09:02

Platform

win10v2004-20240426-en

Max time kernel

149s

Max time network

161s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.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\kat3A59.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 3620 set thread context of 1292 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat3A59.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\kat3A59.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3620 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp
PID 3620 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp
PID 3620 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp
PID 3620 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp
PID 3620 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp
PID 3620 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp
PID 3620 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp
PID 3620 wrote to memory of 1292 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe

"C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe"

C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp

C:\Users\Admin\AppData\Local\Temp\kat3A59.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 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 18.190.202.116.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 152.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
DE 116.202.190.18:5432 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
SE 192.229.221.95:80 tcp
US 8.8.8.8:53 udp

Files

memory/3620-0-0x0000000000830000-0x0000000000831000-memory.dmp

memory/1292-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3620-9-0x0000000000400000-0x000000000067A000-memory.dmp

memory/1292-10-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp

MD5 d7d3e9e68f500a5362ef855382d5934b
SHA1 740495877cbcda9c61c8eb1ce3cb0c0f20738a81
SHA256 8cdc50bc308edd6d0f70d7c8203f0ef469daaa62ae801a00c93e6b9160fef772
SHA512 512f5d5764050274d5beb6c966c787eb50a9850ec4c4886cda14f3a912dc627d29d2cac5db7f825500041a47ce65ecc4e8f728dc934c748f6575ae17d4c2cf89

C:\Users\Admin\AppData\Local\Temp\kat3A59.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/1292-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3620-1-0x0000000002B80000-0x0000000002CE3000-memory.dmp

memory/1292-13-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1292-14-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1292-17-0x000000001B7C0000-0x000000001BA1F000-memory.dmp

memory/1292-31-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1292-32-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-07 08:57

Reported

2024-06-07 09:02

Platform

win11-20240419-en

Max time kernel

146s

Max time network

160s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.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\kat42F4.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 3580 set thread context of 4112 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat42F4.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\kat42F4.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat42F4.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat42F4.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3580 wrote to memory of 4112 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat42F4.tmp
PID 3580 wrote to memory of 4112 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat42F4.tmp
PID 3580 wrote to memory of 4112 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat42F4.tmp
PID 3580 wrote to memory of 4112 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat42F4.tmp
PID 3580 wrote to memory of 4112 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat42F4.tmp
PID 3580 wrote to memory of 4112 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat42F4.tmp
PID 3580 wrote to memory of 4112 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat42F4.tmp
PID 3580 wrote to memory of 4112 N/A C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe C:\Users\Admin\AppData\Local\Temp\kat42F4.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe

"C:\Users\Admin\AppData\Local\Temp\fd678fa881df72654406d6f637c06330c56d3f6c6dc67c1c50c892398aaec88e.exe"

C:\Users\Admin\AppData\Local\Temp\kat42F4.tmp

C:\Users\Admin\AppData\Local\Temp\kat42F4.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 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.249.124.192.in-addr.arpa udp
US 8.8.8.8:53 18.190.202.116.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 tcp
N/A 52.111.243.30:443 tcp

Files

memory/3580-0-0x0000000002630000-0x0000000002631000-memory.dmp

memory/3580-1-0x0000000002C70000-0x0000000002DD3000-memory.dmp

memory/3580-9-0x0000000000400000-0x000000000067A000-memory.dmp

memory/4112-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4112-8-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat42F4.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4112-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4112-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4112-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4112-27-0x000000001DD20000-0x000000001DF7F000-memory.dmp

memory/4112-42-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4112-43-0x0000000000400000-0x0000000000648000-memory.dmp