Malware Analysis Report

2024-10-19 06:55

Sample ID 240525-q6g8rseg3v
Target regasms.exe
SHA256 7cea3459fe006e787947d8eedc2770285061bc5e9a0ca0ffc7213a96756341fb
Tags
asyncrat lnkk 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

7cea3459fe006e787947d8eedc2770285061bc5e9a0ca0ffc7213a96756341fb

Threat Level: Known bad

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

Malicious Activity Summary

asyncrat lnkk rat spyware stealer

AsyncRat

Async RAT payload

Asyncrat family

Reads user/profile data of web browsers

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-25 13:52

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

2024-05-25 13:52

Reported

2024-05-25 13:56

Platform

win10v2004-20240426-en

Max time kernel

148s

Max time network

153s

Command Line

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

Signatures

AsyncRat

rat asyncrat

Reads user/profile data of web browsers

spyware stealer

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

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

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 leetboy.dynuddns.net udp
IT 185.196.11.252:1338 leetboy.dynuddns.net tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 252.11.196.185.in-addr.arpa udp
US 8.8.8.8:53 25.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
NL 23.62.61.155:443 www.bing.com tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 155.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 45.19.74.20.in-addr.arpa udp
US 8.8.8.8:53 208.143.182.52.in-addr.arpa udp

Files

memory/3460-0-0x000000007472E000-0x000000007472F000-memory.dmp

memory/3460-1-0x0000000000050000-0x0000000000066000-memory.dmp

memory/3460-2-0x0000000074720000-0x0000000074ED0000-memory.dmp

memory/3460-3-0x00000000050E0000-0x0000000005684000-memory.dmp

memory/3460-4-0x0000000004CD0000-0x0000000004D62000-memory.dmp

memory/3460-5-0x0000000004CC0000-0x0000000004CCA000-memory.dmp

memory/3460-8-0x0000000005F10000-0x0000000005FAC000-memory.dmp

memory/3460-9-0x0000000005A00000-0x0000000005A66000-memory.dmp

memory/3460-10-0x000000007472E000-0x000000007472F000-memory.dmp

memory/3460-11-0x0000000074720000-0x0000000074ED0000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-25 13:52

Reported

2024-05-25 13:55

Platform

win7-20240508-en

Max time kernel

118s

Max time network

148s

Command Line

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

Signatures

AsyncRat

rat asyncrat

Reads user/profile data of web browsers

spyware stealer

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

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

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 leetboy.dynuddns.net udp
IT 185.196.11.252:1338 leetboy.dynuddns.net tcp

Files

memory/2220-0-0x000000007473E000-0x000000007473F000-memory.dmp

memory/2220-1-0x0000000000810000-0x0000000000826000-memory.dmp

memory/2220-2-0x0000000074730000-0x0000000074E1E000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab3516.tmp

MD5 29f65ba8e88c063813cc50a4ea544e93
SHA1 05a7040d5c127e68c25d81cc51271ffb8bef3568
SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
SHA512 e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

memory/2220-19-0x000000007473E000-0x000000007473F000-memory.dmp

memory/2220-20-0x0000000074730000-0x0000000074E1E000-memory.dmp