Malware Analysis Report

2025-03-14 22:10

Sample ID 240407-2xkhbaha5s
Target 85670a72cec6853dba0832c5048d4b92f74301ea9db1a16bedde6316c4bb2ea1
SHA256 85670a72cec6853dba0832c5048d4b92f74301ea9db1a16bedde6316c4bb2ea1
Tags
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

85670a72cec6853dba0832c5048d4b92f74301ea9db1a16bedde6316c4bb2ea1

Threat Level: Shows suspicious behavior

The file 85670a72cec6853dba0832c5048d4b92f74301ea9db1a16bedde6316c4bb2ea1 was found to be: Shows suspicious behavior.

Malicious Activity Summary

persistence

Deletes itself

Executes dropped EXE

Adds Run key to start application

Drops file in Windows directory

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-07 22:57

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 22:57

Reported

2024-04-07 23:00

Platform

win7-20240221-en

Max time kernel

149s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\85670a72cec6853dba0832c5048d4b92f74301ea9db1a16bedde6316c4bb2ea1.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-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\85670a72cec6853dba0832c5048d4b92f74301ea9db1a16bedde6316c4bb2ea1.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\85670a72cec6853dba0832c5048d4b92f74301ea9db1a16bedde6316c4bb2ea1.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\85670a72cec6853dba0832c5048d4b92f74301ea9db1a16bedde6316c4bb2ea1.exe

"C:\Users\Admin\AppData\Local\Temp\85670a72cec6853dba0832c5048d4b92f74301ea9db1a16bedde6316c4bb2ea1.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/1040-0-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 7fb75efcd53065901ed2ba0506b530cf
SHA1 8b38c5e96e7f414b3d6e8efcf9d28d7f384c43b7
SHA256 356b4ea49c3dd8606f50ef73cc8d5d131307f366c9fb70ae317dfbb21c87ca42
SHA512 39758245780e0cd43bf4f9e5723412efcdf5a63aa75dcc6954a52b06dff34cba51a188a405dd15edf830c77f1c1e5fd1f50109bd23afd0b42f5997ecb34d2a97

memory/2824-7-0x0000000000400000-0x0000000000403000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 22:57

Reported

2024-04-07 23:00

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\85670a72cec6853dba0832c5048d4b92f74301ea9db1a16bedde6316c4bb2ea1.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-1-5-21-3270530367-132075249-2153716227-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\85670a72cec6853dba0832c5048d4b92f74301ea9db1a16bedde6316c4bb2ea1.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\85670a72cec6853dba0832c5048d4b92f74301ea9db1a16bedde6316c4bb2ea1.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\85670a72cec6853dba0832c5048d4b92f74301ea9db1a16bedde6316c4bb2ea1.exe

"C:\Users\Admin\AppData\Local\Temp\85670a72cec6853dba0832c5048d4b92f74301ea9db1a16bedde6316c4bb2ea1.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 34.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 130.118.77.104.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 98.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/3224-0-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 7fb75efcd53065901ed2ba0506b530cf
SHA1 8b38c5e96e7f414b3d6e8efcf9d28d7f384c43b7
SHA256 356b4ea49c3dd8606f50ef73cc8d5d131307f366c9fb70ae317dfbb21c87ca42
SHA512 39758245780e0cd43bf4f9e5723412efcdf5a63aa75dcc6954a52b06dff34cba51a188a405dd15edf830c77f1c1e5fd1f50109bd23afd0b42f5997ecb34d2a97

memory/3224-4-0x0000000000400000-0x0000000000403000-memory.dmp