Malware Analysis Report

2025-01-03 06:30

Sample ID 230926-knqvashb85
Target usertp.exe
SHA256 68c2a97252cfef191ad5dd8fd7facd69019f2592eadc8b86cfbae04daf92c56e
Tags
rat default asyncrat discovery stormkitty spyware 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

68c2a97252cfef191ad5dd8fd7facd69019f2592eadc8b86cfbae04daf92c56e

Threat Level: Known bad

The file usertp.exe was found to be: Known bad.

Malicious Activity Summary

rat default asyncrat discovery stormkitty spyware stealer

AsyncRat

StormKitty

Async RAT payload

StormKitty payload

Asyncrat family

Async RAT payload

Reads user/profile data of web browsers

Checks installed software on the system

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Uses Task Scheduler COM API

Suspicious use of SetWindowsHookEx

Suspicious behavior: AddClipboardFormatListener

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-26 08:45

Signatures

Async RAT payload

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

Asyncrat family

asyncrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-26 08:45

Reported

2023-09-26 08:47

Platform

win7-20230831-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\usertp.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

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

Checks installed software on the system

discovery

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

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

Processes

C:\Users\Admin\AppData\Local\Temp\usertp.exe

"C:\Users\Admin\AppData\Local\Temp\usertp.exe"

Network

Country Destination Domain Proto
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/2312-0-0x0000000000E80000-0x0000000000E98000-memory.dmp

memory/2312-1-0x000007FEF5840000-0x000007FEF622C000-memory.dmp

memory/2312-3-0x000000001ADC0000-0x000000001AE40000-memory.dmp

memory/2312-4-0x0000000077480000-0x0000000077629000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab409B.tmp

MD5 f3441b8572aae8801c04f3060b550443
SHA1 4ef0a35436125d6821831ef36c28ffaf196cda15
SHA256 6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf
SHA512 5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

memory/2312-21-0x000007FEF5840000-0x000007FEF622C000-memory.dmp

memory/2312-22-0x000000001ADC0000-0x000000001AE40000-memory.dmp

memory/2312-23-0x0000000077480000-0x0000000077629000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\TarB6B7.tmp

MD5 9441737383d21192400eca82fda910ec
SHA1 725e0d606a4fc9ba44aa8ffde65bed15e65367e4
SHA256 bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5
SHA512 7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

Analysis: behavioral2

Detonation Overview

Submitted

2023-09-26 08:45

Reported

2023-09-26 08:47

Platform

win10v2004-20230915-en

Max time kernel

130s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\usertp.exe"

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

Reads user/profile data of web browsers

spyware stealer

Checks installed software on the system

discovery

Suspicious behavior: AddClipboardFormatListener

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\usertp.exe

"C:\Users\Admin\AppData\Local\Temp\usertp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 1.208.79.178.in-addr.arpa udp
VN 103.38.236.46:4449 tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 46.236.38.103.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.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
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 240.81.21.72.in-addr.arpa udp
US 8.8.8.8:53 27.73.42.20.in-addr.arpa udp

Files

memory/880-0-0x0000000000EA0000-0x0000000000EB8000-memory.dmp

memory/880-2-0x00007FFFC2ED0000-0x00007FFFC3991000-memory.dmp

memory/880-3-0x0000000001710000-0x0000000001720000-memory.dmp

memory/880-6-0x00007FFFE0950000-0x00007FFFE0B45000-memory.dmp

memory/880-7-0x0000000001710000-0x0000000001720000-memory.dmp

memory/880-8-0x00007FFFC2ED0000-0x00007FFFC3991000-memory.dmp

memory/880-10-0x0000000001710000-0x0000000001720000-memory.dmp

memory/880-11-0x000000001CD90000-0x000000001CE06000-memory.dmp

memory/880-12-0x000000001CD10000-0x000000001CD1E000-memory.dmp

memory/880-13-0x000000001CD40000-0x000000001CD5E000-memory.dmp

memory/880-14-0x000000001CD60000-0x000000001CD6A000-memory.dmp

memory/880-17-0x000000001D530000-0x000000001D652000-memory.dmp

memory/880-16-0x000000001CD70000-0x000000001CD7E000-memory.dmp

memory/880-18-0x000000001E650000-0x000000001E6B6000-memory.dmp

memory/880-19-0x00007FFFE0950000-0x00007FFFE0B45000-memory.dmp

memory/880-58-0x000000001CC60000-0x000000001CC82000-memory.dmp

memory/880-59-0x0000000001710000-0x0000000001720000-memory.dmp

memory/880-60-0x0000000001710000-0x0000000001720000-memory.dmp