Malware Analysis Report

2024-11-16 13:46

Sample ID 240628-zxmlkasbme
Target 75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b
SHA256 75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b

Threat Level: Known bad

The file 75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Vidar

Detect Vidar Stealer

Stealc

Downloads MZ/PE file

Reads data files stored by FTP clients

Executes dropped EXE

Reads user/profile data of web browsers

Checks computer location settings

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Delays execution with timeout.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 21:05

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 21:05

Reported

2024-06-28 21:08

Platform

win11-20240611-en

Max time kernel

123s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.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
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\kat9BD2.tmp N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 448 set thread context of 432 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 448 wrote to memory of 432 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp
PID 448 wrote to memory of 432 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp
PID 448 wrote to memory of 432 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp
PID 448 wrote to memory of 432 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp
PID 448 wrote to memory of 432 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp
PID 448 wrote to memory of 432 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp
PID 448 wrote to memory of 432 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp
PID 448 wrote to memory of 432 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp
PID 432 wrote to memory of 4072 N/A C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp C:\Windows\SysWOW64\cmd.exe
PID 432 wrote to memory of 4072 N/A C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp C:\Windows\SysWOW64\cmd.exe
PID 432 wrote to memory of 4072 N/A C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp C:\Windows\SysWOW64\cmd.exe
PID 4072 wrote to memory of 4860 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4072 wrote to memory of 4860 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4072 wrote to memory of 4860 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe

"C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe"

C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp

C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp" & rd /s /q "C:\ProgramData\JEBGCBAFCGDA" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.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
DE 195.201.251.214:9000 195.201.251.214 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 tcp
DE 195.201.251.214:9000 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 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 207.180.253.128:80 tea.arpdabl.org tcp

Files

memory/448-0-0x00000000025E0000-0x00000000025E1000-memory.dmp

memory/448-1-0x0000000004200000-0x0000000004310000-memory.dmp

memory/432-4-0x0000000000400000-0x0000000000648000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat9BD2.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/432-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/448-9-0x0000000000400000-0x0000000000635000-memory.dmp

memory/432-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/432-24-0x0000000000400000-0x0000000000648000-memory.dmp

memory/432-25-0x0000000000400000-0x0000000000648000-memory.dmp

memory/432-26-0x0000000000400000-0x0000000000648000-memory.dmp

memory/432-28-0x000000002F6F0000-0x000000002F94F000-memory.dmp

memory/432-43-0x0000000000400000-0x0000000000648000-memory.dmp

memory/432-59-0x0000000000400000-0x0000000000648000-memory.dmp

memory/432-66-0x0000000000400000-0x0000000000648000-memory.dmp

memory/432-67-0x0000000000400000-0x0000000000648000-memory.dmp

memory/432-72-0x0000000000400000-0x0000000000648000-memory.dmp

memory/432-73-0x0000000000400000-0x0000000000648000-memory.dmp

memory/432-77-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 21:05

Reported

2024-06-28 21:08

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\kat493E.tmp N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\kat493E.tmp N/A

Reads data files stored by FTP clients

spyware stealer

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3092 set thread context of 1928 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat493E.tmp

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\kat493E.tmp N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\kat493E.tmp N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3092 wrote to memory of 1928 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat493E.tmp
PID 3092 wrote to memory of 1928 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat493E.tmp
PID 3092 wrote to memory of 1928 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat493E.tmp
PID 3092 wrote to memory of 1928 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat493E.tmp
PID 3092 wrote to memory of 1928 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat493E.tmp
PID 3092 wrote to memory of 1928 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat493E.tmp
PID 3092 wrote to memory of 1928 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat493E.tmp
PID 3092 wrote to memory of 1928 N/A C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe C:\Users\Admin\AppData\Local\Temp\kat493E.tmp
PID 1928 wrote to memory of 4612 N/A C:\Users\Admin\AppData\Local\Temp\kat493E.tmp C:\Windows\SysWOW64\cmd.exe
PID 1928 wrote to memory of 4612 N/A C:\Users\Admin\AppData\Local\Temp\kat493E.tmp C:\Windows\SysWOW64\cmd.exe
PID 1928 wrote to memory of 4612 N/A C:\Users\Admin\AppData\Local\Temp\kat493E.tmp C:\Windows\SysWOW64\cmd.exe
PID 4612 wrote to memory of 4384 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4612 wrote to memory of 4384 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4612 wrote to memory of 4384 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe

"C:\Users\Admin\AppData\Local\Temp\75655a34314f6c567f4af4f82d2daa95b3779be8e96e54d9ea0adf2267856b4b.exe"

C:\Users\Admin\AppData\Local\Temp\kat493E.tmp

C:\Users\Admin\AppData\Local\Temp\kat493E.tmp

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat493E.tmp" & rd /s /q "C:\ProgramData\AEBAKJDGHIIJ" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
US 8.8.8.8:53 steamcommunity.com udp
US 8.8.8.8:53 tea.arpdabl.org udp
NL 52.142.223.178:80 tcp

Files

memory/3092-0-0x0000000000720000-0x0000000000721000-memory.dmp

memory/3092-1-0x0000000004070000-0x0000000004180000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\kat493E.tmp

MD5 66064dbdb70a5eb15ebf3bf65aba254b
SHA1 0284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA256 6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512 b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

memory/1928-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3092-9-0x0000000000400000-0x0000000000635000-memory.dmp

memory/1928-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1928-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1928-11-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1928-12-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1928-13-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1928-14-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1928-15-0x0000000000400000-0x0000000000648000-memory.dmp