Malware Analysis Report

2025-01-03 06:31

Sample ID 230926-knq53afh4z
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

StormKitty

Asyncrat family

Async RAT payload

StormKitty payload

AsyncRat

Async RAT payload

Reads user/profile data of web browsers

Checks installed software on the system

Unsigned PE

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Uses Task Scheduler COM API

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

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

150s

Max time network

152s

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
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
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/1712-0-0x0000000001210000-0x0000000001228000-memory.dmp

memory/1712-1-0x000007FEF5690000-0x000007FEF607C000-memory.dmp

memory/1712-3-0x0000000000490000-0x0000000000510000-memory.dmp

memory/1712-4-0x00000000772F0000-0x0000000077499000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab4108.tmp

MD5 f3441b8572aae8801c04f3060b550443
SHA1 4ef0a35436125d6821831ef36c28ffaf196cda15
SHA256 6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf
SHA512 5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

memory/1712-21-0x000007FEF5690000-0x000007FEF607C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Tar57E5.tmp

MD5 9441737383d21192400eca82fda910ec
SHA1 725e0d606a4fc9ba44aa8ffde65bed15e65367e4
SHA256 bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5
SHA512 7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

memory/1712-22-0x0000000000490000-0x0000000000510000-memory.dmp

memory/1712-41-0x00000000772F0000-0x0000000077499000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-09-26 08:45

Reported

2023-09-26 08:47

Platform

win10v2004-20230915-en

Max time kernel

141s

Max time network

152s

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
Token: SeManageVolumePrivilege N/A C:\Windows\System32\svchost.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"

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe

C:\Windows\System32\svchost.exe

C:\Windows\System32\svchost.exe -k UnistackSvcGroup

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 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 8.3.197.209.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 133.113.22.20.in-addr.arpa udp
VN 103.38.236.46:4449 tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 46.236.38.103.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 135.1.85.104.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
VN 103.38.236.46:4449 tcp
VN 103.38.236.46:4449 tcp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 240.81.21.72.in-addr.arpa udp
US 8.8.8.8:53 1.208.79.178.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 49.192.11.51.in-addr.arpa udp

Files

memory/2432-0-0x0000000000CC0000-0x0000000000CD8000-memory.dmp

memory/2432-2-0x00007FFB3CC00000-0x00007FFB3D6C1000-memory.dmp

memory/2432-3-0x000000001BAC0000-0x000000001BAD0000-memory.dmp

memory/2432-4-0x00007FFB5A610000-0x00007FFB5A805000-memory.dmp

memory/2432-7-0x000000001BAC0000-0x000000001BAD0000-memory.dmp

memory/2432-8-0x000000001BAC0000-0x000000001BAD0000-memory.dmp

memory/2432-10-0x00007FFB3CC00000-0x00007FFB3D6C1000-memory.dmp

memory/2432-11-0x000000001BAC0000-0x000000001BAD0000-memory.dmp

memory/2432-12-0x000000001CC00000-0x000000001CC76000-memory.dmp

memory/2432-13-0x000000001BA90000-0x000000001BA9E000-memory.dmp

memory/2432-14-0x000000001C010000-0x000000001C02E000-memory.dmp

memory/2432-15-0x000000001C050000-0x000000001C05A000-memory.dmp

memory/2432-16-0x000000001D480000-0x000000001D4E6000-memory.dmp

memory/2432-18-0x00007FFB5A610000-0x00007FFB5A805000-memory.dmp

memory/2432-19-0x000000001BAC0000-0x000000001BAD0000-memory.dmp

memory/2432-21-0x000000001D5E0000-0x000000001D702000-memory.dmp

memory/2432-20-0x000000001C070000-0x000000001C07E000-memory.dmp

memory/2432-66-0x000000001BAC0000-0x000000001BAD0000-memory.dmp

memory/2432-67-0x000000001D2C0000-0x000000001D2E2000-memory.dmp

memory/3000-68-0x000001DCB6940000-0x000001DCB6950000-memory.dmp

memory/3000-84-0x000001DCB6A40000-0x000001DCB6A50000-memory.dmp

memory/3000-100-0x000001DCBEFE0000-0x000001DCBEFE1000-memory.dmp

memory/3000-101-0x000001DCC0010000-0x000001DCC0011000-memory.dmp

memory/3000-102-0x000001DCC0010000-0x000001DCC0011000-memory.dmp

memory/3000-103-0x000001DCC0010000-0x000001DCC0011000-memory.dmp

memory/3000-104-0x000001DCC0010000-0x000001DCC0011000-memory.dmp

memory/3000-105-0x000001DCC0010000-0x000001DCC0011000-memory.dmp

memory/3000-106-0x000001DCC0010000-0x000001DCC0011000-memory.dmp

memory/3000-107-0x000001DCC0010000-0x000001DCC0011000-memory.dmp

memory/3000-108-0x000001DCC0010000-0x000001DCC0011000-memory.dmp

memory/3000-109-0x000001DCC0010000-0x000001DCC0011000-memory.dmp

memory/3000-110-0x000001DCC0010000-0x000001DCC0011000-memory.dmp

memory/3000-111-0x000001DCBEC30000-0x000001DCBEC31000-memory.dmp

memory/3000-112-0x000001DCBEC20000-0x000001DCBEC21000-memory.dmp

memory/3000-114-0x000001DCBEC30000-0x000001DCBEC31000-memory.dmp

memory/3000-117-0x000001DCBEC20000-0x000001DCBEC21000-memory.dmp

memory/3000-120-0x000001DCBEB60000-0x000001DCBEB61000-memory.dmp

C:\Users\Admin\AppData\Local\Comms\UnistoreDB\store.jfm

MD5 23e8632dd78781f87474a3c15412492d
SHA1 45e4f54b2dd2ad173ff1266fd525d32602688df2
SHA256 b3bf685f1d860f97188a11a47c0cddf73a60dca8c36333f72b6023b1776c5c40
SHA512 f533b870a1ddfb5c4ebe8f9cd8ccc51d34f7ab531b3e22518111ebb281f1965634ea0c9443b0bdbd564596d9bdb4f056846d686d1971aa731ca0459a33513f28

memory/3000-132-0x000001DCBED60000-0x000001DCBED61000-memory.dmp

memory/3000-134-0x000001DCBED70000-0x000001DCBED71000-memory.dmp

memory/3000-135-0x000001DCBED70000-0x000001DCBED71000-memory.dmp

memory/3000-136-0x000001DCBEE80000-0x000001DCBEE81000-memory.dmp