Malware Analysis Report

2024-09-09 18:21

Sample ID 240618-p39ceaycnk
Target #!~#0PEn_9797_P@$SW0rd~!^!!$.rar
SHA256 8a70aefa2707adfc89832e1e50d50643f0701eff060ffcf4f9259e9e083f69c9
Tags
stealc vidar persistence privilege_escalation stealer discovery spyware
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

8a70aefa2707adfc89832e1e50d50643f0701eff060ffcf4f9259e9e083f69c9

Threat Level: Known bad

The file #!~#0PEn_9797_P@$SW0rd~!^!!$.rar was found to be: Known bad.

Malicious Activity Summary

stealc vidar persistence privilege_escalation stealer discovery spyware

Vidar

Stealc

Detect Vidar Stealer

Reads data files stored by FTP clients

Suspicious use of SetThreadContext

Checks computer location settings

Loads dropped DLL

Checks installed software on the system

Event Triggered Execution: Netsh Helper DLL

Program crash

Enumerates physical storage devices

Delays execution with timeout.exe

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

Checks processor information in registry

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-18 12:52

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-18 12:52

Reported

2024-06-18 12:55

Platform

win7-20240508-en

Max time kernel

149s

Max time network

123s

Command Line

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2348 set thread context of 2224 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe

Event Triggered Execution: Netsh Helper DLL

persistence privilege_escalation
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key queried \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key value enumerated \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe N/A
N/A N/A C:\Windows\SysWOW64\netsh.exe N/A
N/A N/A C:\Windows\SysWOW64\netsh.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe N/A
N/A N/A C:\Windows\SysWOW64\netsh.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2348 wrote to memory of 2224 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 2348 wrote to memory of 2224 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 2348 wrote to memory of 2224 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 2348 wrote to memory of 2224 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 2348 wrote to memory of 2224 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 2224 wrote to memory of 2028 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 2224 wrote to memory of 2028 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 2224 wrote to memory of 2028 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 2224 wrote to memory of 2028 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 2224 wrote to memory of 2028 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 2224 wrote to memory of 2028 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 2028 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 C:\Windows\SysWOW64\WerFault.exe
PID 2028 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 C:\Windows\SysWOW64\WerFault.exe
PID 2028 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 C:\Windows\SysWOW64\WerFault.exe
PID 2028 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 C:\Windows\SysWOW64\WerFault.exe

Processes

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

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

C:\Windows\SysWOW64\netsh.exe

C:\Windows\SysWOW64\netsh.exe

C:\Users\Admin\AppData\Local\Temp\dcom.au3

C:\Users\Admin\AppData\Local\Temp\dcom.au3

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2028 -s 148

Network

N/A

Files

memory/2348-0-0x0000000074250000-0x00000000743C4000-memory.dmp

memory/2348-1-0x0000000077130000-0x00000000772D9000-memory.dmp

memory/2348-10-0x0000000074262000-0x0000000074264000-memory.dmp

memory/2348-11-0x0000000074250000-0x00000000743C4000-memory.dmp

memory/2348-12-0x0000000074250000-0x00000000743C4000-memory.dmp

memory/2224-21-0x0000000074250000-0x00000000743C4000-memory.dmp

memory/2348-20-0x0000000050310000-0x0000000050349000-memory.dmp

memory/2348-19-0x0000000057800000-0x0000000057812000-memory.dmp

memory/2348-18-0x0000000050120000-0x000000005030D000-memory.dmp

memory/2348-17-0x0000000057000000-0x000000005703F000-memory.dmp

memory/2348-16-0x0000000059800000-0x000000005986E000-memory.dmp

memory/2348-15-0x0000000050000000-0x0000000050116000-memory.dmp

memory/2348-14-0x0000000000400000-0x0000000000698000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\c7fb035a

MD5 3d0f7d7780b4c8e28bc8e47595c47794
SHA1 aedf916b3bc7d5f18480da95fb84e78075c53378
SHA256 a8ab0283f3c9f3727ddc9a2bdee7ea8eacfa879221ca5c0038512d1f16a2de37
SHA512 1b27e4e198c9aba2c142fac5c2a5465e64e284efe19eab0b3edeb80f9c077d775a9527beb43c3822a4db75f4b4d1aa16565fcbb47b63db0f23c3873add7264a4

memory/2224-23-0x0000000077130000-0x00000000772D9000-memory.dmp

memory/2224-25-0x0000000074250000-0x00000000743C4000-memory.dmp

memory/2224-26-0x0000000074250000-0x00000000743C4000-memory.dmp

\Users\Admin\AppData\Local\Temp\dcom.au3

MD5 c56b5f0201a3b3de53e561fe76912bfd
SHA1 2a4062e10a5de813f5688221dbeb3f3ff33eb417
SHA256 237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d
SHA512 195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

memory/2028-32-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/2028-31-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/2224-33-0x0000000074250000-0x00000000743C4000-memory.dmp

memory/2028-35-0x0000000000750000-0x0000000000E9C000-memory.dmp

memory/2028-42-0x0000000000750000-0x0000000000E9C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-18 12:52

Reported

2024-06-18 12:55

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

52s

Command Line

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

Reads data files stored by FTP clients

spyware stealer

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\dcom.au3 N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4844 set thread context of 3812 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe

Checks installed software on the system

discovery

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 N/A

Enumerates physical storage devices

Event Triggered Execution: Netsh Helper DLL

persistence privilege_escalation
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A

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\dcom.au3 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: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe N/A
N/A N/A C:\Windows\SysWOW64\netsh.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4844 wrote to memory of 3812 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 4844 wrote to memory of 3812 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 4844 wrote to memory of 3812 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 4844 wrote to memory of 3812 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 3812 wrote to memory of 2092 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 3812 wrote to memory of 2092 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 3812 wrote to memory of 2092 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 3812 wrote to memory of 2092 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 3812 wrote to memory of 2092 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 2092 wrote to memory of 4440 N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 C:\Windows\SysWOW64\cmd.exe
PID 2092 wrote to memory of 4440 N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 C:\Windows\SysWOW64\cmd.exe
PID 2092 wrote to memory of 4440 N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 C:\Windows\SysWOW64\cmd.exe
PID 4440 wrote to memory of 1304 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4440 wrote to memory of 1304 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4440 wrote to memory of 1304 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

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

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

C:\Windows\SysWOW64\netsh.exe

C:\Windows\SysWOW64\netsh.exe

C:\Users\Admin\AppData\Local\Temp\dcom.au3

C:\Users\Admin\AppData\Local\Temp\dcom.au3

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\Setup.exe" & rd /s /q "C:\ProgramData\CBAKEBGIIDAF" & 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
US 8.8.8.8:53 poocoin.online udp

Files

memory/4844-0-0x0000000073D80000-0x0000000073EFB000-memory.dmp

memory/4844-1-0x00007FFC28E70000-0x00007FFC29065000-memory.dmp

memory/4844-11-0x0000000073D80000-0x0000000073EFB000-memory.dmp

memory/4844-10-0x0000000073D92000-0x0000000073D94000-memory.dmp

memory/4844-12-0x0000000073D80000-0x0000000073EFB000-memory.dmp

memory/4844-20-0x0000000050310000-0x0000000050349000-memory.dmp

memory/3812-21-0x0000000073D81000-0x0000000073D8F000-memory.dmp

memory/4844-19-0x0000000050120000-0x000000005030D000-memory.dmp

memory/4844-18-0x0000000057800000-0x0000000057812000-memory.dmp

memory/4844-17-0x0000000050000000-0x0000000050116000-memory.dmp

memory/4844-16-0x0000000057000000-0x000000005703F000-memory.dmp

memory/4844-15-0x0000000059800000-0x000000005986E000-memory.dmp

memory/4844-14-0x0000000000400000-0x0000000000698000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\b02e452b

MD5 e76c7e708267e5e4517dae04bed89d5c
SHA1 85d0afef3e5b95d6d560eda3fd6bb1c7c04be0f0
SHA256 b16e5c1cba4ef6f084ac6899d52b4c35017c30a1fc661aa54c4f2afb69d563e3
SHA512 cadb04a12280db5cb55fe4e80dcf43b05ad56df007bd738f066d16a1b9a308396086dd10f8b206dbd83998b026170f557156e98784bc4f59fe2bc8b120c2ae32

memory/3812-23-0x00007FFC28E70000-0x00007FFC29065000-memory.dmp

memory/3812-26-0x0000000073D81000-0x0000000073D8F000-memory.dmp

memory/3812-25-0x0000000073D8E000-0x0000000073D90000-memory.dmp

memory/3812-30-0x0000000073D81000-0x0000000073D8F000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\dcom.au3

MD5 c56b5f0201a3b3de53e561fe76912bfd
SHA1 2a4062e10a5de813f5688221dbeb3f3ff33eb417
SHA256 237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d
SHA512 195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

memory/2092-32-0x0000000001400000-0x0000000001B4C000-memory.dmp

memory/2092-34-0x00007FFC28E70000-0x00007FFC29065000-memory.dmp

memory/2092-35-0x0000000061E00000-0x0000000061EF3000-memory.dmp

memory/2092-47-0x0000000001400000-0x0000000001B4C000-memory.dmp