Malware Analysis Report

2024-09-11 16:48

Sample ID 240615-wzwepstgpk
Target file.exe
SHA256 aa97786e9adf76f6defc26e6dae534e5c274cac67b85e53b1386e5aae31d5ed9
Tags
stealc vidar spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

aa97786e9adf76f6defc26e6dae534e5c274cac67b85e53b1386e5aae31d5ed9

Threat Level: Known bad

The file file.exe was found to be: Known bad.

Malicious Activity Summary

stealc vidar spyware stealer

Detect Vidar Stealer

Stealc

Vidar

Downloads MZ/PE file

Accesses cryptocurrency files/wallets, possible credential harvesting

Suspicious use of SetThreadContext

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Unsecured Credentials
T1552
Credentials In Files
T1552.001
Discovery
TA0007
Query Registry
T1012
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Data from Local System
T1005
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-15 18:22

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 18:22

Reported

2024-06-15 18:24

Platform

win7-20240220-en

Max time kernel

117s

Max time network

118s

Command Line

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

Stealc

stealer stealc

Vidar

stealer vidar

Downloads MZ/PE file

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1684 set thread context of 2428 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Delays execution with timeout.exe

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\file.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1684 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1684 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1684 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1684 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1684 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1684 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1684 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1684 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1684 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1684 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 2428 wrote to memory of 1564 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\cmd.exe
PID 2428 wrote to memory of 1564 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\cmd.exe
PID 2428 wrote to memory of 1564 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\cmd.exe
PID 2428 wrote to memory of 1564 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\cmd.exe
PID 1564 wrote to memory of 2340 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1564 wrote to memory of 2340 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1564 wrote to memory of 2340 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1564 wrote to memory of 2340 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

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

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

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\AKKFHDAKECFH" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
DE 88.99.127.107:443 tcp
DE 88.99.127.107:443 tcp
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 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 tcp
FI 65.109.240.138:443 tcp
FI 65.109.240.138:443 tcp
FI 65.109.240.138:443 tcp
FI 65.109.240.138:443 tcp
FI 65.109.240.138:443 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp
FI 65.109.240.138:443 65.109.240.138 tcp

Files

memory/1684-0-0x0000000074D9E000-0x0000000074D9F000-memory.dmp

memory/1684-1-0x0000000000870000-0x0000000000C6C000-memory.dmp

memory/1684-2-0x0000000074D90000-0x000000007547E000-memory.dmp

memory/1684-3-0x0000000004EA0000-0x0000000004FC2000-memory.dmp

memory/1684-4-0x0000000000440000-0x000000000045C000-memory.dmp

memory/1684-14-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-5-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-6-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-8-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-10-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-12-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-32-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-64-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-62-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-60-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-58-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-56-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-65-0x0000000074D90000-0x000000007547E000-memory.dmp

memory/1684-54-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-52-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-50-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-49-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-46-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-45-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-42-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-41-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-38-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-36-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-34-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-30-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-28-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-26-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-24-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-23-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-21-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-18-0x0000000000440000-0x0000000000455000-memory.dmp

memory/1684-17-0x0000000000440000-0x0000000000455000-memory.dmp

memory/2428-67-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2428-68-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2428-77-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1684-78-0x0000000074D90000-0x000000007547E000-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\TarB736.tmp

MD5 4ea6026cf93ec6338144661bf1202cd1
SHA1 a1dec9044f750ad887935a01430bf49322fbdcb7
SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
SHA512 6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

memory/2428-560-0x0000000000400000-0x0000000000648000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-15 18:22

Reported

2024-06-15 18:24

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

150s

Command Line

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

Stealc

stealer stealc

Vidar

stealer vidar

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3564 set thread context of 2640 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Delays execution with timeout.exe

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\file.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\file.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\file.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3564 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 3564 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 3564 wrote to memory of 748 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 3564 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 3564 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 3564 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 3564 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 3564 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 3564 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 3564 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 3564 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 3564 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 2640 wrote to memory of 992 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\cmd.exe
PID 2640 wrote to memory of 992 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\cmd.exe
PID 2640 wrote to memory of 992 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\cmd.exe
PID 992 wrote to memory of 4988 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 992 wrote to memory of 4988 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 992 wrote to memory of 4988 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

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

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

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe" & rd /s /q "C:\ProgramData\EHJDGCBGDBKJ" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
DE 88.99.127.107:443 tcp
US 8.8.8.8:53 t.me udp
US 8.8.8.8:53 steamcommunity.com udp

Files

memory/3564-0-0x00000000744AE000-0x00000000744AF000-memory.dmp

memory/3564-1-0x0000000000B20000-0x0000000000F1C000-memory.dmp

memory/3564-2-0x0000000005950000-0x00000000059EC000-memory.dmp

memory/3564-4-0x00000000744A0000-0x0000000074C50000-memory.dmp

memory/3564-3-0x0000000005AA0000-0x0000000005BC2000-memory.dmp

memory/3564-5-0x0000000005830000-0x000000000584C000-memory.dmp

memory/3564-7-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-41-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-39-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-65-0x0000000005830000-0x0000000005845000-memory.dmp

memory/2640-68-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3564-70-0x00000000744A0000-0x0000000074C50000-memory.dmp

memory/2640-66-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3564-63-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-62-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-59-0x0000000005830000-0x0000000005845000-memory.dmp

memory/2640-72-0x0000000000400000-0x0000000000648000-memory.dmp

memory/3564-71-0x00000000744A0000-0x0000000074C50000-memory.dmp

memory/3564-57-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-55-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-53-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-51-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-49-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-48-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-46-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-43-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-37-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-35-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-33-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-31-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-30-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-27-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-25-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-23-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-21-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-19-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-17-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-15-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-13-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-11-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-9-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-6-0x0000000005830000-0x0000000005845000-memory.dmp

memory/3564-73-0x00000000744A0000-0x0000000074C50000-memory.dmp

memory/2640-74-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2640-75-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2640-77-0x0000000000400000-0x0000000000648000-memory.dmp