Malware Analysis Report

2025-08-05 14:28

Sample ID 231123-j3z6vagf52
Target 23112023_1612_codernna_02.jpg
SHA256 aa4bd04106c0aa7e985165538154e6b42923bd2662b00cd18776b97b7bd70342
Tags
rat nna asyncrat 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

aa4bd04106c0aa7e985165538154e6b42923bd2662b00cd18776b97b7bd70342

Threat Level: Known bad

The file 23112023_1612_codernna_02.jpg was found to be: Known bad.

Malicious Activity Summary

rat nna asyncrat spyware stealer

Async RAT payload

Asyncrat family

AsyncRat

Async RAT payload

Reads user/profile data of web browsers

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-11-23 08:12

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

2023-11-23 08:12

Reported

2023-11-23 08:15

Platform

win7-20231020-en

Max time kernel

146s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\23112023_1612_codernna_02.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 behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\23112023_1612_codernna_02.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\23112023_1612_codernna_02.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\23112023_1612_codernna_02.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\23112023_1612_codernna_02.exe

"C:\Users\Admin\AppData\Local\Temp\23112023_1612_codernna_02.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 buike.kozow.com udp
NL 45.137.22.110:8808 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:6606 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:8808 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:8808 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:8808 buike.kozow.com tcp
NL 45.137.22.110:6606 buike.kozow.com tcp
NL 45.137.22.110:6606 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:6606 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:8808 buike.kozow.com tcp
NL 45.137.22.110:8808 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:8808 buike.kozow.com tcp
US 8.8.8.8:53 buike.kozow.com udp
NL 45.137.22.110:6606 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:6606 buike.kozow.com tcp

Files

memory/1532-0-0x00000000001F0000-0x0000000000206000-memory.dmp

memory/1532-1-0x0000000074C40000-0x000000007532E000-memory.dmp

memory/1532-2-0x0000000004860000-0x00000000048A0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab7486.tmp

MD5 f3441b8572aae8801c04f3060b550443
SHA1 4ef0a35436125d6821831ef36c28ffaf196cda15
SHA256 6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf
SHA512 5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

C:\Users\Admin\AppData\Local\Temp\Tar8A6A.tmp

MD5 9441737383d21192400eca82fda910ec
SHA1 725e0d606a4fc9ba44aa8ffde65bed15e65367e4
SHA256 bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5
SHA512 7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

memory/1532-55-0x0000000074C40000-0x000000007532E000-memory.dmp

memory/1532-74-0x0000000004860000-0x00000000048A0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-11-23 08:12

Reported

2023-11-23 08:15

Platform

win10v2004-20231023-en

Max time kernel

155s

Max time network

162s

Command Line

"C:\Users\Admin\AppData\Local\Temp\23112023_1612_codernna_02.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 behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\23112023_1612_codernna_02.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\23112023_1612_codernna_02.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\23112023_1612_codernna_02.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\23112023_1612_codernna_02.exe

"C:\Users\Admin\AppData\Local\Temp\23112023_1612_codernna_02.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 126.178.238.8.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 buike.kozow.com udp
NL 45.137.22.110:7707 buike.kozow.com tcp
US 8.8.8.8:53 110.22.137.45.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 81.175.53.84.in-addr.arpa udp
US 8.8.8.8:53 121.175.53.84.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:8808 buike.kozow.com tcp
NL 45.137.22.110:6606 buike.kozow.com tcp
NL 45.137.22.110:6606 buike.kozow.com tcp
NL 45.137.22.110:8808 buike.kozow.com tcp
NL 45.137.22.110:6606 buike.kozow.com tcp
NL 45.137.22.110:8808 buike.kozow.com tcp
NL 45.137.22.110:8808 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:8808 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:6606 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
NL 45.137.22.110:6606 buike.kozow.com tcp
NL 45.137.22.110:6606 buike.kozow.com tcp
NL 45.137.22.110:8808 buike.kozow.com tcp
US 8.8.8.8:53 25.73.42.20.in-addr.arpa udp
NL 45.137.22.110:8808 buike.kozow.com tcp
NL 45.137.22.110:8808 buike.kozow.com tcp
NL 45.137.22.110:7707 buike.kozow.com tcp
US 8.8.8.8:53 buike.kozow.com udp
NL 45.137.22.110:7707 buike.kozow.com tcp

Files

memory/4204-0-0x0000000074D60000-0x0000000075510000-memory.dmp

memory/4204-1-0x00000000002B0000-0x00000000002C6000-memory.dmp

memory/4204-2-0x0000000004CD0000-0x0000000004CE0000-memory.dmp

memory/4204-3-0x0000000074D60000-0x0000000075510000-memory.dmp

memory/4204-4-0x0000000005730000-0x0000000005CD4000-memory.dmp

memory/4204-5-0x0000000005370000-0x0000000005402000-memory.dmp

memory/4204-6-0x0000000005410000-0x000000000541A000-memory.dmp

memory/4204-9-0x00000000063C0000-0x000000000645C000-memory.dmp

memory/4204-10-0x0000000005F50000-0x0000000005FB6000-memory.dmp

memory/4204-11-0x0000000004CD0000-0x0000000004CE0000-memory.dmp