Malware Analysis Report

2024-11-16 13:47

Sample ID 240628-ym94fazhje
Target 7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a
SHA256 7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a
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

7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a

Threat Level: Known bad

The file 7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Stealc

Detect Vidar Stealer

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

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 19:55

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 19:55

Reported

2024-06-28 19:57

Platform

win10v2004-20240611-en

Max time kernel

134s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.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\kat3F89.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 1628 set thread context of 4136 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat3F89.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\kat3F89.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat3F89.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1628 wrote to memory of 4136 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat3F89.tmp
PID 1628 wrote to memory of 4136 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat3F89.tmp
PID 1628 wrote to memory of 4136 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat3F89.tmp
PID 1628 wrote to memory of 4136 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat3F89.tmp
PID 1628 wrote to memory of 4136 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat3F89.tmp
PID 1628 wrote to memory of 4136 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat3F89.tmp
PID 1628 wrote to memory of 4136 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat3F89.tmp
PID 1628 wrote to memory of 4136 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat3F89.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe

"C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe"

C:\Users\Admin\AppData\Local\Temp\kat3F89.tmp

C:\Users\Admin\AppData\Local\Temp\kat3F89.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
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 14.160.190.20.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 97.17.167.52.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 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 24.249.124.192.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
DE 195.201.251.214:9000 195.201.251.214 tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 95.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 187.77.117.104.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.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 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/1628-0-0x00000000008D0000-0x00000000008D1000-memory.dmp

memory/1628-3-0x00000000029B0000-0x0000000002AC0000-memory.dmp

memory/1628-9-0x0000000000400000-0x0000000000635000-memory.dmp

memory/4136-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4136-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4136-4-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat3F89.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4136-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4136-23-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4136-25-0x00000000227D0000-0x0000000022A2F000-memory.dmp

memory/4136-33-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4136-34-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 19:55

Reported

2024-06-28 19:57

Platform

win11-20240611-en

Max time kernel

90s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.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\kat4F1A.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 3464 set thread context of 4664 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat4F1A.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\kat4F1A.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat4F1A.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3464 wrote to memory of 4664 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat4F1A.tmp
PID 3464 wrote to memory of 4664 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat4F1A.tmp
PID 3464 wrote to memory of 4664 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat4F1A.tmp
PID 3464 wrote to memory of 4664 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat4F1A.tmp
PID 3464 wrote to memory of 4664 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat4F1A.tmp
PID 3464 wrote to memory of 4664 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat4F1A.tmp
PID 3464 wrote to memory of 4664 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat4F1A.tmp
PID 3464 wrote to memory of 4664 N/A C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe C:\Users\Admin\AppData\Local\Temp\kat4F1A.tmp

Processes

C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe

"C:\Users\Admin\AppData\Local\Temp\7c3f7e52034e3b37b13e01d9fef6d80393f13fb77f0053a605f3526a599d6e3a.exe"

C:\Users\Admin\AppData\Local\Temp\kat4F1A.tmp

C:\Users\Admin\AppData\Local\Temp\kat4F1A.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 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.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/3464-0-0x00000000008F0000-0x00000000008F1000-memory.dmp

memory/3464-2-0x0000000002B30000-0x0000000002C40000-memory.dmp

memory/4664-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3464-10-0x0000000000400000-0x0000000000635000-memory.dmp

memory/4664-9-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat4F1A.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/4664-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4664-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4664-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4664-28-0x000000002D1C0000-0x000000002D41F000-memory.dmp

memory/4664-35-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4664-36-0x0000000000400000-0x0000000000648000-memory.dmp