Malware Analysis Report

2024-12-07 10:23

Sample ID 241113-v1hpkawfpn
Target 42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98.exe
SHA256 42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98
Tags
discovery persistence
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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
7/10

SHA256

42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98

Threat Level: Shows suspicious behavior

The file 42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98.exe was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery persistence

Deletes itself

Executes dropped EXE

Adds Run key to start application

Drops file in Windows directory

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 17:27

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 17:27

Reported

2024-11-13 17:29

Platform

win7-20240903-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98.exe"

Signatures

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98.exe

"C:\Users\Admin\AppData\Local\Temp\42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2308-0-0x0000000000400000-0x0000000000403000-memory.dmp

memory/2308-6-0x0000000000400000-0x0000000000403000-memory.dmp

memory/936-8-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 a40c6e2330bbdc28b3fd1e6285948b7d
SHA1 26cc749f6d6e88b303ad060946fe606406e1f00d
SHA256 e66e83e03a75bc48cea4315a92afe397d58d6db940b055e4f42902951bc951ef
SHA512 bf8e2a402373e21918c4959fd61450e217b30dc9fdced0b51f32c335556615dfc9dda1dcaa9508155fabbe6aaeeacd00788446f79d6fdd4a03ee4f14a64fc6cc

memory/936-10-0x0000000000400000-0x0000000000403000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 17:27

Reported

2024-11-13 17:29

Platform

win10v2004-20241007-en

Max time kernel

119s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98.exe"

Signatures

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\microsofthelp.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98.exe

"C:\Users\Admin\AppData\Local\Temp\42a0b2c3f0374a1c8f74ef68139321bd9035a69c9e90cd26f8c47e44a747bc98.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 101.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/1572-0-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 a40c6e2330bbdc28b3fd1e6285948b7d
SHA1 26cc749f6d6e88b303ad060946fe606406e1f00d
SHA256 e66e83e03a75bc48cea4315a92afe397d58d6db940b055e4f42902951bc951ef
SHA512 bf8e2a402373e21918c4959fd61450e217b30dc9fdced0b51f32c335556615dfc9dda1dcaa9508155fabbe6aaeeacd00788446f79d6fdd4a03ee4f14a64fc6cc

memory/1572-5-0x0000000000400000-0x0000000000403000-memory.dmp

memory/1600-6-0x0000000000400000-0x0000000000403000-memory.dmp