Malware Analysis Report

2024-11-16 13:44

Sample ID 240607-celj8agh48
Target dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90
SHA256 dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90
Tags
stealc vidar stealer discovery spyware
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

dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90

Threat Level: Known bad

The file dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90 was found to be: Known bad.

Malicious Activity Summary

stealc vidar stealer discovery spyware

Stealc

Detect Vidar Stealer

Vidar

Downloads MZ/PE file

Reads user/profile data of web browsers

Executes dropped EXE

Loads dropped DLL

Checks installed software on the system

Suspicious use of SetThreadContext

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Checks processor information in registry

Modifies system certificate store

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-07 01:59

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-07 01:59

Reported

2024-06-07 02:04

Platform

win7-20240221-en

Max time kernel

8s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat201E.tmp N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3048 set thread context of 2364 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat201E.tmp

Modifies system certificate store

evasion spyware trojan
Description Indicator Process Target
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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 C:\Users\Admin\AppData\Local\Temp\kat201E.tmp N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25 C:\Users\Admin\AppData\Local\Temp\kat201E.tmp N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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 C:\Users\Admin\AppData\Local\Temp\kat201E.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3048 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat201E.tmp
PID 3048 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat201E.tmp
PID 3048 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat201E.tmp
PID 3048 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat201E.tmp
PID 3048 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat201E.tmp
PID 3048 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat201E.tmp
PID 3048 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat201E.tmp
PID 3048 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat201E.tmp
PID 3048 wrote to memory of 2364 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat201E.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe

"C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe"

C:\Users\Admin\AppData\Local\Temp\kat201E.tmp

C:\Users\Admin\AppData\Local\Temp\kat201E.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
NL 149.154.167.99:443 t.me tcp
NL 149.154.167.99:443 t.me tcp
NL 149.154.167.99:443 t.me tcp
US 8.8.8.8:53 steamcommunity.com udp
BE 104.68.92.92:443 steamcommunity.com tcp
FI 65.21.109.161:443 65.21.109.161 tcp
FI 65.21.109.161:443 65.21.109.161 tcp
FI 65.21.109.161:443 65.21.109.161 tcp
FI 65.21.109.161:443 65.21.109.161 tcp
FI 65.21.109.161:443 65.21.109.161 tcp
FI 65.21.109.161:443 tcp
FI 65.21.109.161:443 tcp

Files

memory/3048-0-0x0000000000220000-0x0000000000221000-memory.dmp

memory/3048-2-0x00000000032D0000-0x000000000341C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat201E.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/2364-24-0x0000000000400000-0x0000000000649000-memory.dmp

memory/3048-23-0x0000000000400000-0x0000000000663000-memory.dmp

memory/2364-22-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2364-19-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2364-17-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2364-15-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2364-13-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2364-11-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2364-9-0x0000000000400000-0x0000000000649000-memory.dmp

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

MD5 49aebf8cbd62d92ac215b2923fb1b9f5
SHA1 1723be06719828dda65ad804298d0431f6aff976
SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512 bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

C:\Users\Admin\AppData\Local\Temp\Tar25DF.tmp

MD5 4ea6026cf93ec6338144661bf1202cd1
SHA1 a1dec9044f750ad887935a01430bf49322fbdcb7
SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
SHA512 6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

MD5 e006c2b5d445943376b98167d456ce06
SHA1 6914595dd0e58ca561de5124ee7520556fe8541d
SHA256 9f79ba054342c291ab29441d9479cd2f9d95f786db7a4ad42e645a3d4baafa7e
SHA512 0131eb7d52c6ad400d0a597344a9471d9f1529cc78593ac186d5ca46af97eddd88ad92d68277ea651c55a4a97c7515f7e2253e7a4a1db2e9ed99c8b344a6a0a6

memory/2364-172-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2364-193-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2364-215-0x0000000014640000-0x000000001489F000-memory.dmp

memory/2364-226-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2364-250-0x0000000000400000-0x0000000000649000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-07 01:59

Reported

2024-06-07 02:04

Platform

win10-20240404-en

Max time kernel

133s

Max time network

298s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.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\kat757E.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 2184 set thread context of 2264 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat757E.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\kat757E.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2184 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat757E.tmp
PID 2184 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat757E.tmp
PID 2184 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat757E.tmp
PID 2184 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat757E.tmp
PID 2184 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat757E.tmp
PID 2184 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat757E.tmp
PID 2184 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat757E.tmp
PID 2184 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe C:\Users\Admin\AppData\Local\Temp\kat757E.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe

"C:\Users\Admin\AppData\Local\Temp\dc16cf627f763c2d7eee33f6fba1875df77411b37b068f44b8780433cb518a90.exe"

C:\Users\Admin\AppData\Local\Temp\kat757E.tmp

C:\Users\Admin\AppData\Local\Temp\kat757E.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 49.13.158.245:5432 49.13.158.245 tcp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 22.249.124.192.in-addr.arpa udp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
US 8.8.8.8:53 245.158.13.49.in-addr.arpa udp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 27.73.42.20.in-addr.arpa udp

Files

memory/2184-0-0x00000000007D0000-0x00000000007D1000-memory.dmp

memory/2264-8-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2184-9-0x0000000000400000-0x0000000000663000-memory.dmp

memory/2264-10-0x0000000000400000-0x0000000000649000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat757E.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/2264-4-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2184-1-0x0000000003EF0000-0x000000000403C000-memory.dmp

memory/2264-25-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2264-26-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2264-28-0x0000000028340000-0x000000002859F000-memory.dmp

memory/2264-43-0x0000000000400000-0x0000000000649000-memory.dmp

memory/2264-44-0x0000000000400000-0x0000000000649000-memory.dmp