Malware Analysis Report

2024-09-11 16:55

Sample ID 240614-ea3n2stgka
Target file.exe
SHA256 b26b1074a9b97f7f8be564b70f50ee965df6b8773695ba25d72c2638d3c90586
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

b26b1074a9b97f7f8be564b70f50ee965df6b8773695ba25d72c2638d3c90586

Threat Level: Known bad

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

Malicious Activity Summary

stealc vidar spyware stealer

Vidar

Detect Vidar Stealer

Stealc

Downloads MZ/PE file

Accesses cryptocurrency files/wallets, possible credential harvesting

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of WriteProcessMemory

Checks processor information in registry

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

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

2024-06-14 03:45

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-14 03:45

Reported

2024-06-14 03:47

Platform

win7-20240221-en

Max time kernel

119s

Max time network

120s

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

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 2868 set thread context of 2712 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 2868 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 2868 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 2868 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 2868 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 2868 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 2868 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 2868 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 2868 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 2868 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 2868 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 2712 wrote to memory of 1856 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\cmd.exe
PID 2712 wrote to memory of 1856 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\cmd.exe
PID 2712 wrote to memory of 1856 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\cmd.exe
PID 2712 wrote to memory of 1856 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\cmd.exe
PID 1856 wrote to memory of 2528 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1856 wrote to memory of 2528 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1856 wrote to memory of 2528 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1856 wrote to memory of 2528 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\HJDAFIEHIEGD" & 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/2868-0-0x00000000745BE000-0x00000000745BF000-memory.dmp

memory/2868-1-0x0000000001020000-0x000000000141C000-memory.dmp

memory/2868-2-0x00000000745B0000-0x0000000074C9E000-memory.dmp

memory/2868-3-0x0000000004C50000-0x0000000004D94000-memory.dmp

memory/2868-4-0x00000000054E0000-0x00000000055DA000-memory.dmp

memory/2868-5-0x0000000000490000-0x00000000004AC000-memory.dmp

memory/2868-6-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-7-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-9-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-16-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-19-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-31-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-55-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-65-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-63-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-61-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-59-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-66-0x00000000745B0000-0x0000000074C9E000-memory.dmp

memory/2868-57-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-53-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-52-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-49-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-47-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-45-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-43-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-42-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-39-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-37-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-35-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-33-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-29-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-27-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-25-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-23-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-21-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-17-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-13-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2868-12-0x0000000000490000-0x00000000004A5000-memory.dmp

memory/2712-67-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2712-70-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2712-69-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2712-68-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2868-77-0x00000000745B0000-0x0000000074C9E000-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\TarC52A.tmp

MD5 4ea6026cf93ec6338144661bf1202cd1
SHA1 a1dec9044f750ad887935a01430bf49322fbdcb7
SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
SHA512 6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

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

MD5 7ab8c271d4d0077e9ffa8ac346c0aba1
SHA1 36c5d23db02a0c076b5e5cc2c649d587a555e595
SHA256 8813929699d712e5cd492a174234aa24b62d63201f7f65fee734b4e00a0fd427
SHA512 caff85e85c707f38472b7dbaf5aded6105bbf91ef152b1514cf769436ebc236877d254aeae02f82c73fb61b5a2c07280923c7983ca2980911c06fa2f7c5e5577

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-14 03:45

Reported

2024-06-14 03:47

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

49s

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 4808 set thread context of 1948 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 4808 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4808 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4808 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4808 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4808 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4808 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4808 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4808 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4808 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1948 wrote to memory of 208 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 208 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\cmd.exe
PID 1948 wrote to memory of 208 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe C:\Windows\SysWOW64\cmd.exe
PID 208 wrote to memory of 4084 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 208 wrote to memory of 4084 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 208 wrote to memory of 4084 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 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe" & rd /s /q "C:\ProgramData\GHDHDBAECGCA" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
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/4808-0-0x000000007535E000-0x000000007535F000-memory.dmp

memory/4808-1-0x0000000000670000-0x0000000000A6C000-memory.dmp

memory/4808-2-0x00000000054B0000-0x000000000554C000-memory.dmp

memory/4808-3-0x0000000005550000-0x0000000005694000-memory.dmp

memory/4808-4-0x0000000075350000-0x0000000075B00000-memory.dmp

memory/4808-5-0x0000000005690000-0x000000000578A000-memory.dmp

memory/4808-6-0x00000000053B0000-0x00000000053CC000-memory.dmp

memory/4808-61-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-66-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-64-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/1948-69-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4808-71-0x0000000075350000-0x0000000075B00000-memory.dmp

memory/1948-67-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4808-62-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-58-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-54-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-52-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-50-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-48-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-46-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-44-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-42-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-40-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-38-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-36-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-34-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-32-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-30-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-22-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-20-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-18-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-16-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-10-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-8-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-7-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-56-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-28-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-26-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-24-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-14-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/4808-12-0x00000000053B0000-0x00000000053C5000-memory.dmp

memory/1948-73-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4808-72-0x0000000075350000-0x0000000075B00000-memory.dmp

memory/4808-74-0x0000000075350000-0x0000000075B00000-memory.dmp

memory/1948-75-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1948-76-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1948-78-0x0000000000400000-0x0000000000648000-memory.dmp