Malware Analysis Report

2025-01-03 06:26

Sample ID 230926-kmklwshb76
Target usertp.exe
SHA256 68c2a97252cfef191ad5dd8fd7facd69019f2592eadc8b86cfbae04daf92c56e
Tags
asyncrat stormkitty default discovery rat spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

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

asyncrat stormkitty default discovery rat spyware stealer

Asyncrat family

StormKitty

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 use of SetWindowsHookEx

Uses Task Scheduler COM API

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: AddClipboardFormatListener

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-26 08:43

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: behavioral2

Detonation Overview

Submitted

2023-09-26 08:43

Reported

2023-09-26 08:45

Platform

win10v2004-20230915-en

Max time kernel

142s

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
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 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.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
VN 103.38.236.46:4449 tcp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 46.236.38.103.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.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
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
VN 103.38.236.46:4449 tcp
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
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 240.81.21.72.in-addr.arpa udp
US 8.8.8.8:53 209.143.182.52.in-addr.arpa udp

Files

memory/968-0-0x00000000002A0000-0x00000000002B8000-memory.dmp

memory/968-2-0x00007FFAAF110000-0x00007FFAAFBD1000-memory.dmp

memory/968-3-0x000000001B030000-0x000000001B040000-memory.dmp

memory/968-4-0x00007FFACC7F0000-0x00007FFACC9E5000-memory.dmp

memory/968-8-0x000000001B030000-0x000000001B040000-memory.dmp

memory/968-9-0x000000001B030000-0x000000001B040000-memory.dmp

memory/968-10-0x00007FFAAF110000-0x00007FFAAFBD1000-memory.dmp

memory/968-11-0x000000001C3B0000-0x000000001C426000-memory.dmp

memory/968-12-0x0000000002510000-0x000000000251E000-memory.dmp

memory/968-13-0x000000001B010000-0x000000001B02E000-memory.dmp

memory/968-15-0x0000000002520000-0x000000000252E000-memory.dmp

memory/968-14-0x000000001B530000-0x000000001B596000-memory.dmp

memory/968-16-0x000000001AE90000-0x000000001AE9A000-memory.dmp

memory/968-17-0x000000001B030000-0x000000001B040000-memory.dmp

memory/968-19-0x000000001C630000-0x000000001C752000-memory.dmp

memory/968-36-0x00007FFACC7F0000-0x00007FFACC9E5000-memory.dmp

memory/968-59-0x000000001C790000-0x000000001C7B2000-memory.dmp

memory/968-60-0x000000001B030000-0x000000001B040000-memory.dmp

memory/968-61-0x000000001B030000-0x000000001B040000-memory.dmp

memory/3952-62-0x000001B0FC740000-0x000001B0FC750000-memory.dmp

memory/3952-78-0x000001B0FC840000-0x000001B0FC850000-memory.dmp

memory/3952-94-0x000001B0FCB70000-0x000001B0FCB71000-memory.dmp

memory/3952-96-0x000001B0FCBA0000-0x000001B0FCBA1000-memory.dmp

memory/3952-97-0x000001B0FCBA0000-0x000001B0FCBA1000-memory.dmp

memory/3952-98-0x000001B0FCCB0000-0x000001B0FCCB1000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-26 08:43

Reported

2023-09-26 08:45

Platform

win7-20230831-en

Max time kernel

150s

Max time network

149s

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/2192-0-0x0000000000EA0000-0x0000000000EB8000-memory.dmp

memory/2192-1-0x000007FEF5A90000-0x000007FEF647C000-memory.dmp

memory/2192-3-0x000000001AEB0000-0x000000001AF30000-memory.dmp

memory/2192-4-0x00000000776D0000-0x0000000077879000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab5312.tmp

MD5 f3441b8572aae8801c04f3060b550443
SHA1 4ef0a35436125d6821831ef36c28ffaf196cda15
SHA256 6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf
SHA512 5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

memory/2192-21-0x000007FEF5A90000-0x000007FEF647C000-memory.dmp

memory/2192-22-0x000000001AEB0000-0x000000001AF30000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Tar69FE.tmp

MD5 9441737383d21192400eca82fda910ec
SHA1 725e0d606a4fc9ba44aa8ffde65bed15e65367e4
SHA256 bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5
SHA512 7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

memory/2192-41-0x00000000776D0000-0x0000000077879000-memory.dmp