Malware Analysis Report

2025-01-03 06:30

Sample ID 230926-lnrx2agb6z
Target tmp
SHA256 3261879a2aa9272d761dd5888c89646259d99d4008b28715b363c654230a3df3
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

3261879a2aa9272d761dd5888c89646259d99d4008b28715b363c654230a3df3

Threat Level: Known bad

The file tmp was found to be: Known bad.

Malicious Activity Summary

rat default asyncrat discovery stormkitty spyware stealer

StormKitty

Asyncrat family

StormKitty payload

Async RAT payload

AsyncRat

Async RAT payload

Reads user/profile data of web browsers

Checks installed software on the system

Unsigned PE

Suspicious behavior: AddClipboardFormatListener

Uses Task Scheduler COM API

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-26 09:41

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 09:41

Reported

2023-09-26 09:43

Platform

win7-20230831-en

Max time kernel

150s

Max time network

154s

Command Line

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

Signatures

AsyncRat

rat asyncrat

Async RAT payload

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

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

Processes

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

"C:\Users\Admin\AppData\Local\Temp\tmp.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/3008-0-0x0000000000170000-0x0000000000198000-memory.dmp

memory/3008-1-0x000007FEF5630000-0x000007FEF601C000-memory.dmp

memory/3008-3-0x000000001B190000-0x000000001B210000-memory.dmp

memory/3008-4-0x0000000076FD0000-0x0000000077179000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab46A3.tmp

MD5 f3441b8572aae8801c04f3060b550443
SHA1 4ef0a35436125d6821831ef36c28ffaf196cda15
SHA256 6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf
SHA512 5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

memory/3008-21-0x000007FEF5630000-0x000007FEF601C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Tar5C96.tmp

MD5 9441737383d21192400eca82fda910ec
SHA1 725e0d606a4fc9ba44aa8ffde65bed15e65367e4
SHA256 bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5
SHA512 7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

memory/3008-31-0x000000001B190000-0x000000001B210000-memory.dmp

memory/3008-41-0x0000000076FD0000-0x0000000077179000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-09-26 09:41

Reported

2023-09-26 09:43

Platform

win10v2004-20230915-en

Max time kernel

141s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\tmp.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\tmp.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

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

Uses Task Scheduler COM API

persistence

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.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 26.35.223.20.in-addr.arpa udp
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
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 1.202.248.87.in-addr.arpa udp
US 8.8.8.8:53 73.239.69.13.in-addr.arpa udp

Files

memory/4720-0-0x0000000000C20000-0x0000000000C48000-memory.dmp

memory/4720-2-0x00007FFD7F620000-0x00007FFD800E1000-memory.dmp

memory/4720-3-0x000000001BB20000-0x000000001BB30000-memory.dmp

memory/4720-4-0x00007FFD9D1F0000-0x00007FFD9D3E5000-memory.dmp

memory/4720-7-0x000000001BB20000-0x000000001BB30000-memory.dmp

memory/4720-9-0x00007FFD7F620000-0x00007FFD800E1000-memory.dmp

memory/4720-10-0x000000001CB80000-0x000000001CBF6000-memory.dmp

memory/4720-11-0x0000000002D90000-0x0000000002D9E000-memory.dmp

memory/4720-12-0x000000001CB00000-0x000000001CB1E000-memory.dmp

memory/4720-13-0x0000000002DA0000-0x0000000002DAE000-memory.dmp

memory/4720-15-0x0000000002F20000-0x0000000002F2A000-memory.dmp

memory/4720-14-0x000000001CB20000-0x000000001CB86000-memory.dmp

memory/4720-16-0x00007FFD9D1F0000-0x00007FFD9D3E5000-memory.dmp

memory/4720-18-0x000000001D100000-0x000000001D222000-memory.dmp

memory/4720-19-0x000000001BB20000-0x000000001BB30000-memory.dmp

memory/4720-58-0x000000001D530000-0x000000001D552000-memory.dmp

memory/4720-59-0x000000001BB20000-0x000000001BB30000-memory.dmp

memory/4720-60-0x000000001D270000-0x000000001D2C1000-memory.dmp