Malware Analysis Report

2024-11-16 13:45

Sample ID 240607-gl9b3sae3v
Target ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f
SHA256 ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f
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

ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f

Threat Level: Known bad

The file ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Stealc

Vidar

Detect Vidar Stealer

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 use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-07 05:54

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-07 05:54

Reported

2024-06-07 05:57

Platform

win10v2004-20240508-en

Max time kernel

133s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.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\katE465.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 2440 set thread context of 2340 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\katE465.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\katE465.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\katE465.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\katE465.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2440 wrote to memory of 2340 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\katE465.tmp
PID 2440 wrote to memory of 2340 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\katE465.tmp
PID 2440 wrote to memory of 2340 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\katE465.tmp
PID 2440 wrote to memory of 2340 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\katE465.tmp
PID 2440 wrote to memory of 2340 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\katE465.tmp
PID 2440 wrote to memory of 2340 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\katE465.tmp
PID 2440 wrote to memory of 2340 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\katE465.tmp
PID 2440 wrote to memory of 2340 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\katE465.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe

"C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe"

C:\Users\Admin\AppData\Local\Temp\katE465.tmp

C:\Users\Admin\AppData\Local\Temp\katE465.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 --field-trial-handle=4020,i,6593821857742176458,13646536021844995125,262144 --variations-seed-version --mojo-platform-channel-handle=4204 /prefetch:8

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 t.me udp
NL 149.154.167.99:443 t.me 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 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 18.190.202.116.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.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 88.156.103.20.in-addr.arpa udp
NL 23.62.61.58:443 www.bing.com 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 58.61.62.23.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 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 99.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 7.173.189.20.in-addr.arpa udp

Files

memory/2440-0-0x00000000009F0000-0x00000000009F1000-memory.dmp

memory/2440-1-0x0000000002C70000-0x0000000002DD6000-memory.dmp

memory/2340-4-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\katE465.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/2340-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2340-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2440-10-0x0000000000400000-0x00000000006EF000-memory.dmp

memory/2340-13-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2340-14-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2340-17-0x000000001B730000-0x000000001B98F000-memory.dmp

memory/2340-31-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2340-32-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-07 05:54

Reported

2024-06-07 05:57

Platform

win11-20240508-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.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\kat4D55.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 3920 set thread context of 2244 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\kat4D55.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\kat4D55.tmp N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4D55.tmp N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat4D55.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3920 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\kat4D55.tmp
PID 3920 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\kat4D55.tmp
PID 3920 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\kat4D55.tmp
PID 3920 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\kat4D55.tmp
PID 3920 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\kat4D55.tmp
PID 3920 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\kat4D55.tmp
PID 3920 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\kat4D55.tmp
PID 3920 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe C:\Users\Admin\AppData\Local\Temp\kat4D55.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe

"C:\Users\Admin\AppData\Local\Temp\ecb0527bfe18f89a938ca234b2598f1ee4fa9e323a47cd6aac69e3acb65ddb2f.exe"

C:\Users\Admin\AppData\Local\Temp\kat4D55.tmp

C:\Users\Admin\AppData\Local\Temp\kat4D55.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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 99.167.154.149.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 116.202.190.18 tcp

Files

memory/3920-0-0x0000000002580000-0x0000000002581000-memory.dmp

memory/3920-2-0x0000000004350000-0x00000000044B6000-memory.dmp

memory/2244-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2244-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2244-9-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat4D55.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/3920-10-0x0000000000400000-0x00000000006EF000-memory.dmp

memory/2244-15-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2244-18-0x000000001B880000-0x000000001BADF000-memory.dmp

memory/2244-32-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2244-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2244-34-0x0000000000400000-0x0000000000648000-memory.dmp