Malware Analysis Report

2025-04-13 10:57

Sample ID 231224-zpcfmaege3
Target 121a6914b86cfc9ca8d12864cba4da75
SHA256 93986eac8652157b41ac4464bed7584c6b0c04a3fcdd8bcda47592df69fee3ba
Tags
xloader wufn loader rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

93986eac8652157b41ac4464bed7584c6b0c04a3fcdd8bcda47592df69fee3ba

Threat Level: Known bad

The file 121a6914b86cfc9ca8d12864cba4da75 was found to be: Known bad.

Malicious Activity Summary

xloader wufn loader rat

Xloader

CustAttr .NET packer

Xloader payload

Suspicious use of SetThreadContext

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-12-24 20:53

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-24 20:53

Reported

2023-12-25 17:25

Platform

win7-20231129-en

Max time kernel

121s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\121a6914b86cfc9ca8d12864cba4da75.exe"

Signatures

Xloader

loader xloader

CustAttr .NET packer

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

Xloader payload

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2004 set thread context of 2516 N/A C:\Users\Admin\AppData\Local\Temp\121a6914b86cfc9ca8d12864cba4da75.exe C:\Users\Admin\AppData\Local\Temp\121a6914b86cfc9ca8d12864cba4da75.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\121a6914b86cfc9ca8d12864cba4da75.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\121a6914b86cfc9ca8d12864cba4da75.exe

"C:\Users\Admin\AppData\Local\Temp\121a6914b86cfc9ca8d12864cba4da75.exe"

C:\Users\Admin\AppData\Local\Temp\121a6914b86cfc9ca8d12864cba4da75.exe

"C:\Users\Admin\AppData\Local\Temp\121a6914b86cfc9ca8d12864cba4da75.exe"

Network

N/A

Files

memory/2004-1-0x00000000740B0000-0x000000007479E000-memory.dmp

memory/2004-0-0x0000000001090000-0x00000000011D4000-memory.dmp

memory/2004-2-0x0000000004E90000-0x0000000004ED0000-memory.dmp

memory/2004-3-0x00000000002D0000-0x00000000002E2000-memory.dmp

memory/2004-4-0x00000000740B0000-0x000000007479E000-memory.dmp

memory/2004-5-0x0000000004E90000-0x0000000004ED0000-memory.dmp

memory/2004-6-0x0000000005690000-0x000000000572E000-memory.dmp

memory/2004-7-0x0000000000470000-0x000000000049E000-memory.dmp

memory/2004-13-0x00000000740B0000-0x000000007479E000-memory.dmp

memory/2516-14-0x0000000000990000-0x0000000000C93000-memory.dmp

memory/2516-12-0x0000000000400000-0x0000000000428000-memory.dmp

memory/2516-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2516-9-0x0000000000400000-0x0000000000428000-memory.dmp

memory/2516-8-0x0000000000400000-0x0000000000428000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-24 20:53

Reported

2023-12-25 17:24

Platform

win10v2004-20231215-en

Max time kernel

148s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\121a6914b86cfc9ca8d12864cba4da75.exe"

Signatures

Xloader

loader xloader

CustAttr .NET packer

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

Xloader payload

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3500 set thread context of 1580 N/A C:\Users\Admin\AppData\Local\Temp\121a6914b86cfc9ca8d12864cba4da75.exe C:\Users\Admin\AppData\Local\Temp\121a6914b86cfc9ca8d12864cba4da75.exe

Processes

C:\Users\Admin\AppData\Local\Temp\121a6914b86cfc9ca8d12864cba4da75.exe

"C:\Users\Admin\AppData\Local\Temp\121a6914b86cfc9ca8d12864cba4da75.exe"

C:\Users\Admin\AppData\Local\Temp\121a6914b86cfc9ca8d12864cba4da75.exe

"C:\Users\Admin\AppData\Local\Temp\121a6914b86cfc9ca8d12864cba4da75.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 210.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 183.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 201.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 193.178.17.96.in-addr.arpa udp
GB 96.17.178.193:80 tcp
GB 96.17.178.193:80 tcp
GB 96.17.178.193:80 tcp
US 8.8.8.8:53 81.171.91.138.in-addr.arpa udp
US 8.8.8.8:53 198.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 202.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
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 204.79.197.200:443 tse1.mm.bing.net tcp

Files

memory/3500-0-0x0000000074F90000-0x0000000075740000-memory.dmp

memory/3500-1-0x0000000000A90000-0x0000000000BD4000-memory.dmp

memory/3500-2-0x0000000005B20000-0x00000000060C4000-memory.dmp

memory/3500-3-0x0000000005610000-0x00000000056A2000-memory.dmp

memory/3500-4-0x0000000005790000-0x00000000057A0000-memory.dmp

memory/3500-5-0x00000000055F0000-0x00000000055FA000-memory.dmp

memory/3500-6-0x0000000005890000-0x000000000592C000-memory.dmp

memory/3500-7-0x00000000056F0000-0x0000000005702000-memory.dmp

memory/3500-8-0x0000000074F90000-0x0000000075740000-memory.dmp

memory/3500-9-0x0000000005790000-0x00000000057A0000-memory.dmp

memory/3500-10-0x0000000006670000-0x000000000670E000-memory.dmp

memory/3500-11-0x0000000006330000-0x000000000635E000-memory.dmp

memory/3500-14-0x0000000074F90000-0x0000000075740000-memory.dmp

memory/1580-15-0x0000000001860000-0x0000000001BAA000-memory.dmp

memory/1580-12-0x0000000000400000-0x0000000000428000-memory.dmp

memory/1580-16-0x0000000001860000-0x0000000001BAA000-memory.dmp