Malware Analysis Report

2025-08-10 17:43

Sample ID 230316-nlkr2saf29
Target s1
SHA256 71f3d216164b0aea1f79a3dd85f54110811c6daa23a05d3e2b9559f660ffffd0
Tags
asyncrat default rat spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

71f3d216164b0aea1f79a3dd85f54110811c6daa23a05d3e2b9559f660ffffd0

Threat Level: Known bad

The file s1 was found to be: Known bad.

Malicious Activity Summary

asyncrat default rat spyware stealer

AsyncRat

Async RAT payload

Reads user/profile data of web browsers

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-03-16 11:29

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-03-16 11:29

Reported

2023-03-16 11:31

Platform

win7-20230220-en

Max time kernel

28s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\s1.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

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

Reads user/profile data of web browsers

spyware stealer

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\s1.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\s1.exe

"C:\Users\Admin\AppData\Local\Temp\s1.exe"

Network

Country Destination Domain Proto
US 209.145.56.157:6606 tcp
US 209.145.56.157:6606 tcp

Files

memory/1944-54-0x0000000001E00000-0x0000000001E16000-memory.dmp

memory/1944-55-0x0000000027FA0000-0x0000000027FB2000-memory.dmp

memory/1944-56-0x0000000041680000-0x0000000041700000-memory.dmp

memory/1944-57-0x0000000041680000-0x0000000041700000-memory.dmp

memory/1944-75-0x00000000430D0000-0x000000004314E000-memory.dmp

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

MD5 e71c8443ae0bc2e282c73faead0a6dd3
SHA1 0c110c1b01e68edfacaeae64781a37b1995fa94b
SHA256 95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72
SHA512 b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

C:\Users\Admin\AppData\Local\Temp\Tar3BC1.tmp

MD5 be2bec6e8c5653136d3e72fe53c98aa3
SHA1 a8182d6db17c14671c3d5766c72e58d87c0810de
SHA256 1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd
SHA512 0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

memory/1944-96-0x00000000415C0000-0x00000000415CA000-memory.dmp

memory/1944-97-0x0000000043150000-0x00000000431B0000-memory.dmp

memory/1944-98-0x00000000431B0000-0x0000000043240000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-03-16 11:29

Reported

2023-03-16 11:31

Platform

win10v2004-20230220-en

Max time kernel

135s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\s1.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\s1.exe

"C:\Users\Admin\AppData\Local\Temp\s1.exe"

Network

Country Destination Domain Proto
NL 84.53.175.11:80 tcp
NL 84.53.175.11:80 tcp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 210.81.184.52.in-addr.arpa udp
US 8.8.8.8:53 76.38.195.152.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 52.152.110.14:443 tcp
US 52.152.110.14:443 tcp
NL 173.223.113.164:443 tcp
US 8.8.8.8:53 86.8.109.52.in-addr.arpa udp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 93.184.220.29:80 tcp
US 204.79.197.203:80 tcp
US 52.152.110.14:443 tcp
NL 173.223.113.131:80 tcp
US 204.79.197.203:80 tcp
US 8.8.8.8:53 135.106.31.20.in-addr.arpa udp
US 8.8.8.8:53 97.238.32.23.in-addr.arpa udp
US 52.152.110.14:443 tcp
US 52.152.110.14:443 tcp
US 52.152.110.14:443 tcp

Files

memory/2972-133-0x000002BAD74A0000-0x000002BAD74B6000-memory.dmp