Malware Analysis Report

2025-01-18 12:23

Sample ID 221129-mwllnaeg4s
Target 8487327083.zip
SHA256 fe18a09be16b7490b0ee0f7445b9fe20d2b5ec602aacd06fc8a86c087252615c
Tags
score
3/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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
3/10

SHA256

fe18a09be16b7490b0ee0f7445b9fe20d2b5ec602aacd06fc8a86c087252615c

Threat Level: Likely benign

The file 8487327083.zip was found to be: Likely benign.

Malicious Activity Summary


Enumerates physical storage devices

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Modifies Internet Explorer settings

Modifies registry class

Opens file in notepad (likely ransom note)

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-11-29 10:48

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-11-29 10:48

Reported

2022-11-29 10:54

Platform

win7-20220812-en

Max time kernel

177s

Max time network

182s

Command Line

cmd /c C:\Users\Admin\AppData\Local\Temp\2f58ae06e3c0fb739151eee6ba8da55e09bfa61dc06d820bea7e184f2b560586.vhd

Signatures

Enumerates physical storage devices

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\MenuExt C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE N/A
Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE N/A
Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\.vhd\ = "vhd_auto_file" C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\vhd_auto_file\shell C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\vhd_auto_file\shell\edit\command C:\Windows\system32\rundll32.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\vhd_auto_file\shell\edit\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1" C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\vhd_auto_file\shell\open\command C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\vhd_auto_file C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\.vhd C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\vhd_auto_file\shell\edit C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\vhd_auto_file\shell\open C:\Windows\system32\rundll32.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\vhd_auto_file\shell\open\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1" C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_Classes\Local Settings C:\Windows\system32\rundll32.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\vhd_auto_file\ C:\Windows\system32\rundll32.exe N/A

Opens file in notepad (likely ransom note)

ransomware
Description Indicator Process Target
N/A N/A C:\Windows\system32\NOTEPAD.EXE N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\system32\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: 33 N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: 33 N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\system32\AUDIODG.EXE N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE N/A

Processes

C:\Windows\system32\cmd.exe

cmd /c C:\Users\Admin\AppData\Local\Temp\2f58ae06e3c0fb739151eee6ba8da55e09bfa61dc06d820bea7e184f2b560586.vhd

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\2f58ae06e3c0fb739151eee6ba8da55e09bfa61dc06d820bea7e184f2b560586.vhd

C:\Windows\explorer.exe

"C:\Windows\explorer.exe"

C:\Windows\system32\AUDIODG.EXE

C:\Windows\system32\AUDIODG.EXE 0x480

C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE

"C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE" "C:\Users\Admin\Desktop\PublishPing.pptx"

C:\Windows\splwow64.exe

C:\Windows\splwow64.exe 12288

C:\Windows\system32\NOTEPAD.EXE

"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\2f58ae06e3c0fb739151eee6ba8da55e09bfa61dc06d820bea7e184f2b560586.vhd

Network

N/A

Files

memory/1096-54-0x000007FEFC141000-0x000007FEFC143000-memory.dmp

memory/1700-76-0x0000000000000000-mapping.dmp

memory/556-82-0x00000000748F1000-0x00000000748F5000-memory.dmp

memory/556-83-0x0000000071931000-0x0000000071933000-memory.dmp

memory/556-84-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/556-85-0x000000007291D000-0x0000000072928000-memory.dmp

memory/604-86-0x0000000000000000-mapping.dmp

memory/556-88-0x00000000768A1000-0x00000000768A3000-memory.dmp

memory/556-89-0x000000007291D000-0x0000000072928000-memory.dmp

memory/556-90-0x000000006C521000-0x000000006C523000-memory.dmp

memory/556-91-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/556-92-0x000000007291D000-0x0000000072928000-memory.dmp

memory/1000-93-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-11-29 10:48

Reported

2022-11-29 10:56

Platform

win10v2004-20221111-en

Max time kernel

275s

Max time network

280s

Command Line

cmd /c C:\Users\Admin\AppData\Local\Temp\2f58ae06e3c0fb739151eee6ba8da55e09bfa61dc06d820bea7e184f2b560586.vhd

Signatures

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings C:\Windows\system32\cmd.exe N/A

Processes

C:\Windows\system32\cmd.exe

cmd /c C:\Users\Admin\AppData\Local\Temp\2f58ae06e3c0fb739151eee6ba8da55e09bfa61dc06d820bea7e184f2b560586.vhd

Network

Country Destination Domain Proto
N/A 13.107.4.50:80 tcp
N/A 13.107.4.50:80 tcp
N/A 52.168.117.169:443 tcp
N/A 104.80.225.205:443 tcp
N/A 87.248.202.1:80 tcp
N/A 87.248.202.1:80 tcp
N/A 13.107.4.50:80 tcp
N/A 40.77.2.164:443 tcp
N/A 8.8.8.8:53 151.122.125.40.in-addr.arpa udp
N/A 8.8.8.8:53 14.110.152.52.in-addr.arpa udp

Files

N/A