Malware Analysis Report

2024-12-01 02:48

Sample ID 241110-bs6a4swjaw
Target 011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684N
SHA256 011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684
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

011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684

Threat Level: Shows suspicious behavior

The file 011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684N 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

2024-11-10 01:25

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-10 01:25

Reported

2024-11-10 01:27

Platform

win7-20241023-en

Max time kernel

119s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684N.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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684N.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684N.exe N/A
File created C:\Windows\HidePlugin.dll C:\Windows\microsofthelp.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\011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684N.exe

"C:\Users\Admin\AppData\Local\Temp\011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684N.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2156-0-0x0000000000400000-0x000000000040F000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 32bd9e4a531aa4ac0d375c8df18466cd
SHA1 c18ba7f368447a8dfdf482e7e5e2a0ae9e4d9a83
SHA256 3bb7fcc695568b7d12a9801827de5bde6657d3a3ac975b39ba7e30ea705ccc7f
SHA512 01ff235003d1a42daef09365197447ca8dbc8332b247666feed6d7124f5f5a509698d52506f86089c62315907f8af03bc0a6ca6a00ae799fa4e0e2376a08c61a

memory/2156-6-0x0000000000400000-0x000000000040F000-memory.dmp

memory/2132-9-0x0000000000400000-0x000000000040F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-10 01:25

Reported

2024-11-10 01:27

Platform

win10v2004-20241007-en

Max time kernel

120s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684N.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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684N.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\HidePlugin.dll C:\Windows\microsofthelp.exe N/A
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684N.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\011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684N.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\011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684N.exe

"C:\Users\Admin\AppData\Local\Temp\011315a793f376a490cec382a71da5c83c212db354f777d7a608e846ebdf7684N.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp

Files

memory/4036-0-0x0000000000400000-0x000000000040F000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 32bd9e4a531aa4ac0d375c8df18466cd
SHA1 c18ba7f368447a8dfdf482e7e5e2a0ae9e4d9a83
SHA256 3bb7fcc695568b7d12a9801827de5bde6657d3a3ac975b39ba7e30ea705ccc7f
SHA512 01ff235003d1a42daef09365197447ca8dbc8332b247666feed6d7124f5f5a509698d52506f86089c62315907f8af03bc0a6ca6a00ae799fa4e0e2376a08c61a

memory/4036-4-0x0000000000400000-0x000000000040F000-memory.dmp

memory/824-6-0x0000000000400000-0x000000000040F000-memory.dmp