Malware Analysis Report

2024-11-15 09:09

Sample ID 200609-26dftcsdgj
Target file.exe
SHA256 b9bea7b9328edd5b391c66e634ab42bb5d9a05c76d76fbebac8e81f36c3b333b
Tags
Loader valak
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

b9bea7b9328edd5b391c66e634ab42bb5d9a05c76d76fbebac8e81f36c3b333b

Threat Level: Known bad

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

Malicious Activity Summary

Loader valak

Valak JavaScript Loader

Valak

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2020-06-09 22:53

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2020-06-09 22:53

Reported

2020-06-09 22:55

Platform

win7v200430

Max time kernel

150s

Max time network

31s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\file.exe.dll,#1

Signatures

Valak JavaScript Loader

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

Valak

Loader valak

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\file.exe.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\file.exe.dll,#1

C:\Windows\SysWOW64\wscript.exe

wscript.exe //E:jscript "C:\Users\Public\CCGYPWTwr.iySAE

C:\Windows\system32\wbem\WmiApSrv.exe

C:\Windows\system32\wbem\WmiApSrv.exe

Network

Country Destination Domain Proto
N/A 239.255.255.250:1900 udp
N/A 239.255.255.250:1900 udp

Files

C:\Users\Public\CCGYPWTwr.iySAE

memory/1512-1-0x00000000027C0000-0x00000000027C4000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-06-09 22:53

Reported

2020-06-09 22:55

Platform

win10v200430

Max time kernel

66s

Max time network

68s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\file.exe.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3692 wrote to memory of 3128 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3692 wrote to memory of 3128 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3692 wrote to memory of 3128 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3128 wrote to memory of 2388 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\wscript.exe
PID 3128 wrote to memory of 2388 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\wscript.exe
PID 3128 wrote to memory of 2388 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\wscript.exe

Valak JavaScript Loader

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

Valak

Loader valak

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\file.exe.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\file.exe.dll,#1

C:\Windows\SysWOW64\wscript.exe

wscript.exe //E:jscript "C:\Users\Public\CCGYPWTwr.iySAE

C:\Windows\system32\wbem\WmiApSrv.exe

C:\Windows\system32\wbem\WmiApSrv.exe

Network

Country Destination Domain Proto
N/A 239.255.255.250:1900 udp
N/A 239.255.255.250:1900 udp
N/A 127.0.0.1:47001 tcp
N/A 10.10.0.255:137 udp

Files

C:\Users\Public\CCGYPWTwr.iySAE