Malware Analysis Report

2024-11-16 13:45

Sample ID 240628-lnhpcsvhmn
Target a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151
SHA256 a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151
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

a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151

Threat Level: Known bad

The file a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151 was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Stealc

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 behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 09:40

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 09:40

Reported

2024-06-28 09:43

Platform

win10v2004-20240508-en

Max time kernel

125s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.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\katE3B9.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 4824 set thread context of 584 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\katE3B9.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\katE3B9.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\katE3B9.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4824 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\katE3B9.tmp
PID 4824 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\katE3B9.tmp
PID 4824 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\katE3B9.tmp
PID 4824 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\katE3B9.tmp
PID 4824 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\katE3B9.tmp
PID 4824 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\katE3B9.tmp
PID 4824 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\katE3B9.tmp
PID 4824 wrote to memory of 584 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\katE3B9.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe

"C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe"

C:\Users\Admin\AppData\Local\Temp\katE3B9.tmp

C:\Users\Admin\AppData\Local\Temp\katE3B9.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=3624,i,13281073920029625837,8253721632651544158,262144 --variations-seed-version --mojo-platform-channel-handle=3824 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.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 41.249.124.192.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 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 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 32.251.17.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 90.65.42.20.in-addr.arpa udp

Files

memory/4824-0-0x0000000000840000-0x0000000000841000-memory.dmp

memory/4824-1-0x0000000003F40000-0x0000000004050000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\katE3B9.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/584-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/584-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/584-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4824-10-0x0000000000400000-0x000000000058E000-memory.dmp

memory/584-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/584-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/584-25-0x0000000020130000-0x000000002038F000-memory.dmp

memory/584-40-0x0000000000400000-0x0000000000648000-memory.dmp

memory/584-41-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 09:40

Reported

2024-06-28 09:43

Platform

win11-20240611-en

Max time kernel

146s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.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\kat39AD.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 5056 set thread context of 4092 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\kat39AD.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\kat39AD.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat39AD.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5056 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\kat39AD.tmp
PID 5056 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\kat39AD.tmp
PID 5056 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\kat39AD.tmp
PID 5056 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\kat39AD.tmp
PID 5056 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\kat39AD.tmp
PID 5056 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\kat39AD.tmp
PID 5056 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\kat39AD.tmp
PID 5056 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe C:\Users\Admin\AppData\Local\Temp\kat39AD.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe

"C:\Users\Admin\AppData\Local\Temp\a97a6c75928c3d615ec0a47dd89453e58ca43c2a4a7ed3fbe4776ad62cb93151.exe"

C:\Users\Admin\AppData\Local\Temp\kat39AD.tmp

C:\Users\Admin\AppData\Local\Temp\kat39AD.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 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 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 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

Files

memory/5056-0-0x00000000022C0000-0x00000000022C1000-memory.dmp

memory/5056-2-0x0000000003FB0000-0x00000000040C0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat39AD.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4092-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4092-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/5056-9-0x0000000000400000-0x000000000058E000-memory.dmp

memory/4092-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4092-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4092-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4092-27-0x0000000022780000-0x00000000229DF000-memory.dmp

memory/4092-35-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4092-36-0x0000000000400000-0x0000000000648000-memory.dmp