Malware Analysis Report

2024-10-23 21:15

Sample ID 240125-v6vajscgap
Target 751c3019e0e58df216b3aa22972d101b
SHA256 8786fe2c7ac85446839e15b87a0903db034c9a74a570d4cb79a87e9ef97cec77
Tags
upx persistence kinsing loader
score
10/10

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
10/10

SHA256

8786fe2c7ac85446839e15b87a0903db034c9a74a570d4cb79a87e9ef97cec77

Threat Level: Known bad

The file 751c3019e0e58df216b3aa22972d101b was found to be: Known bad.

Malicious Activity Summary

upx persistence kinsing loader

Kinsing

UPX packed file

Executes dropped EXE

Loads dropped DLL

Adds Run key to start application

Drops file in System32 directory

Drops file in Windows directory

Unsigned PE

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-25 17:36

Signatures

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-25 17:36

Reported

2024-01-25 17:39

Platform

win7-20231215-en

Max time kernel

141s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\internet.exe N/A

UPX packed file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunServices\Windows Update = "internet.exe" C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "internet.exe" C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunServices\Windows Update = "internet.exe" C:\Windows\SysWOW64\internet.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "internet.exe" C:\Windows\SysWOW64\internet.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\internet.exe C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\SysExplr.exe C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe N/A
File opened for modification C:\Windows\SysExplr.exe C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command C:\Windows\SysWOW64\internet.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\Windows\\SysExplr.exe \"%1\" " C:\Windows\SysWOW64\internet.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\Windows\\SysExplr.exe \"%1\" " C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe

"C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe"

C:\Windows\SysWOW64\internet.exe

C:\Windows\system32\internet.exe

Network

N/A

Files

memory/2404-0-0x0000000000400000-0x0000000000422000-memory.dmp

\Windows\SysWOW64\internet.exe

MD5 751c3019e0e58df216b3aa22972d101b
SHA1 b61ca1a4c5b4810c18252caa9970d85e1f88830b
SHA256 8786fe2c7ac85446839e15b87a0903db034c9a74a570d4cb79a87e9ef97cec77
SHA512 0a256725f7d10056e00aa8e9ff07b7b19ea20be7f954a99cffcbb2ff3280e6eb3f1c0c229ccb6ee5609898286d440f22edc0ef8bbf5a6b73519d26100452371c

memory/2404-10-0x0000000000220000-0x0000000000242000-memory.dmp

memory/1992-11-0x0000000000400000-0x0000000000422000-memory.dmp

memory/2404-12-0x0000000000400000-0x0000000000422000-memory.dmp

memory/1992-13-0x0000000000400000-0x0000000000422000-memory.dmp

memory/2404-16-0x0000000000220000-0x0000000000242000-memory.dmp

memory/2404-17-0x0000000000400000-0x0000000000422000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-25 17:36

Reported

2024-01-25 17:39

Platform

win10v2004-20231215-en

Max time kernel

142s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe"

Signatures

Kinsing

loader kinsing

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\internet.exe N/A

UPX packed file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunServices\Windows Update = "internet.exe" C:\Windows\SysWOW64\internet.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "internet.exe" C:\Windows\SysWOW64\internet.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunServices\Windows Update = "internet.exe" C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "internet.exe" C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\internet.exe C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\SysExplr.exe C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe N/A
File opened for modification C:\Windows\SysExplr.exe C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\Windows\\SysExplr.exe \"%1\" " C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command C:\Windows\SysWOW64\internet.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\Windows\\SysExplr.exe \"%1\" " C:\Windows\SysWOW64\internet.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe

"C:\Users\Admin\AppData\Local\Temp\751c3019e0e58df216b3aa22972d101b.exe"

C:\Windows\SysWOW64\internet.exe

C:\Windows\system32\internet.exe

Network

Country Destination Domain Proto
US 138.91.171.81:80 tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 23.160.77.104.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 90.16.208.104.in-addr.arpa udp

Files

memory/4952-0-0x0000000000400000-0x0000000000422000-memory.dmp

C:\Windows\SysWOW64\internet.exe

MD5 751c3019e0e58df216b3aa22972d101b
SHA1 b61ca1a4c5b4810c18252caa9970d85e1f88830b
SHA256 8786fe2c7ac85446839e15b87a0903db034c9a74a570d4cb79a87e9ef97cec77
SHA512 0a256725f7d10056e00aa8e9ff07b7b19ea20be7f954a99cffcbb2ff3280e6eb3f1c0c229ccb6ee5609898286d440f22edc0ef8bbf5a6b73519d26100452371c

memory/4952-6-0x0000000000400000-0x0000000000422000-memory.dmp

memory/2348-7-0x0000000000400000-0x0000000000422000-memory.dmp

memory/4952-10-0x0000000000400000-0x0000000000422000-memory.dmp