Malware Analysis Report

2024-11-16 13:45

Sample ID 240628-wh1m4axgna
Target f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6
SHA256 f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6
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

f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6

Threat Level: Known bad

The file f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6 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 17:56

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 17:56

Reported

2024-06-28 17:58

Platform

win10v2004-20240226-en

Max time kernel

142s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.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
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\katEE19.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 4868 set thread context of 4848 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katEE19.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\katEE19.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\katEE19.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4868 wrote to memory of 4848 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katEE19.tmp
PID 4868 wrote to memory of 4848 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katEE19.tmp
PID 4868 wrote to memory of 4848 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katEE19.tmp
PID 4868 wrote to memory of 4848 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katEE19.tmp
PID 4868 wrote to memory of 4848 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katEE19.tmp
PID 4868 wrote to memory of 4848 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katEE19.tmp
PID 4868 wrote to memory of 4848 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katEE19.tmp
PID 4868 wrote to memory of 4848 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katEE19.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe

"C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe"

C:\Users\Admin\AppData\Local\Temp\katEE19.tmp

C:\Users\Admin\AppData\Local\Temp\katEE19.tmp

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4076 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.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
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 41.249.124.192.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
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 8.8.8.8:53 107.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 142.250.178.10:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 10.178.250.142.in-addr.arpa udp
US 8.8.8.8:53 17.173.189.20.in-addr.arpa udp

Files

memory/4868-0-0x0000000000830000-0x0000000000831000-memory.dmp

memory/4868-1-0x00000000041D0000-0x00000000042E0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\katEE19.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4848-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4868-7-0x0000000000400000-0x0000000000635000-memory.dmp

memory/4848-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4848-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4848-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4848-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4848-25-0x0000000022750000-0x00000000229AF000-memory.dmp

memory/4848-40-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4848-41-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4848-42-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 17:56

Reported

2024-06-28 17:58

Platform

win11-20240611-en

Max time kernel

116s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.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\katA6B0.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 4460 set thread context of 4548 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katA6B0.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\katA6B0.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\katA6B0.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4460 wrote to memory of 4548 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katA6B0.tmp
PID 4460 wrote to memory of 4548 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katA6B0.tmp
PID 4460 wrote to memory of 4548 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katA6B0.tmp
PID 4460 wrote to memory of 4548 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katA6B0.tmp
PID 4460 wrote to memory of 4548 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katA6B0.tmp
PID 4460 wrote to memory of 4548 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katA6B0.tmp
PID 4460 wrote to memory of 4548 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katA6B0.tmp
PID 4460 wrote to memory of 4548 N/A C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe C:\Users\Admin\AppData\Local\Temp\katA6B0.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe

"C:\Users\Admin\AppData\Local\Temp\f1b4488c8e4ffb41a7f6b95a45ec898451fb8fc16e4946b0051cb0eed304f1b6.exe"

C:\Users\Admin\AppData\Local\Temp\katA6B0.tmp

C:\Users\Admin\AppData\Local\Temp\katA6B0.tmp

Network

Country Destination Domain Proto
NL 149.154.167.99:443 t.me tcp
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
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 20.42.65.94:443 tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
SE 192.229.221.95:80 tcp

Files

memory/4460-0-0x0000000002390000-0x0000000002391000-memory.dmp

memory/4460-2-0x0000000002BD0000-0x0000000002CE0000-memory.dmp

memory/4548-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4460-10-0x0000000000400000-0x0000000000635000-memory.dmp

memory/4548-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4548-8-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\katA6B0.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4548-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4548-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4548-26-0x0000000020190000-0x00000000203EF000-memory.dmp

memory/4548-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4548-34-0x0000000000400000-0x0000000000648000-memory.dmp