Malware Analysis Report

2024-11-16 13:45

Sample ID 240628-n2lpaa1ckk
Target 98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f
SHA256 98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f
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

98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f

Threat Level: Known bad

The file 98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f 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 11:53

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 11:53

Reported

2024-06-28 11:56

Platform

win10v2004-20240611-en

Max time kernel

135s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.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\kat2EDB.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 696 set thread context of 2152 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat2EDB.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\kat2EDB.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat2EDB.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 696 wrote to memory of 2152 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat2EDB.tmp
PID 696 wrote to memory of 2152 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat2EDB.tmp
PID 696 wrote to memory of 2152 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat2EDB.tmp
PID 696 wrote to memory of 2152 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat2EDB.tmp
PID 696 wrote to memory of 2152 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat2EDB.tmp
PID 696 wrote to memory of 2152 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat2EDB.tmp
PID 696 wrote to memory of 2152 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat2EDB.tmp
PID 696 wrote to memory of 2152 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat2EDB.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe

"C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe"

C:\Users\Admin\AppData\Local\Temp\kat2EDB.tmp

C:\Users\Admin\AppData\Local\Temp\kat2EDB.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 --field-trial-handle=4112,i,8447163055677043976,7218082390179600880,262144 --variations-seed-version --mojo-platform-channel-handle=4060 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
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
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
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 13.107.42.16:443 tcp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
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
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/696-0-0x0000000002290000-0x0000000002291000-memory.dmp

memory/696-1-0x0000000002A10000-0x0000000002B20000-memory.dmp

memory/2152-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2152-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/696-10-0x0000000000400000-0x0000000000635000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat2EDB.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/2152-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2152-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2152-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2152-25-0x0000000022730000-0x000000002298F000-memory.dmp

memory/2152-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2152-34-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 11:53

Reported

2024-06-28 11:56

Platform

win11-20240611-en

Max time kernel

146s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.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\kat79C4.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 1476 set thread context of 3740 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat79C4.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\kat79C4.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat79C4.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1476 wrote to memory of 3740 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat79C4.tmp
PID 1476 wrote to memory of 3740 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat79C4.tmp
PID 1476 wrote to memory of 3740 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat79C4.tmp
PID 1476 wrote to memory of 3740 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat79C4.tmp
PID 1476 wrote to memory of 3740 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat79C4.tmp
PID 1476 wrote to memory of 3740 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat79C4.tmp
PID 1476 wrote to memory of 3740 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat79C4.tmp
PID 1476 wrote to memory of 3740 N/A C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe C:\Users\Admin\AppData\Local\Temp\kat79C4.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe

"C:\Users\Admin\AppData\Local\Temp\98287796fe6238c36c9c681c043c3f6335c9fb50e6bfbdb8f3da321acd5c868f.exe"

C:\Users\Admin\AppData\Local\Temp\kat79C4.tmp

C:\Users\Admin\AppData\Local\Temp\kat79C4.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
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
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

Files

memory/1476-0-0x00000000008F0000-0x00000000008F1000-memory.dmp

memory/1476-1-0x0000000002B70000-0x0000000002C80000-memory.dmp

memory/3740-4-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat79C4.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/3740-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1476-10-0x0000000000400000-0x0000000000635000-memory.dmp

memory/3740-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3740-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3740-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3740-27-0x000000002D130000-0x000000002D38F000-memory.dmp

memory/3740-35-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3740-36-0x0000000000400000-0x0000000000648000-memory.dmp