Malware Analysis Report

2025-04-13 10:46

Sample ID 231228-dv23ksbdej
Target bf743b8e013bea9379fa79b76aeaaf99
SHA256 2a3c5d424e042d82f295aba4197bc052355cbea30b0fa9c419a1cd7fb6c2bc31
Tags
xloader um8e 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

2a3c5d424e042d82f295aba4197bc052355cbea30b0fa9c419a1cd7fb6c2bc31

Threat Level: Known bad

The file bf743b8e013bea9379fa79b76aeaaf99 was found to be: Known bad.

Malicious Activity Summary

xloader um8e loader rat

Xloader

CustAttr .NET packer

Xloader payload

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-12-28 03:20

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-28 03:20

Reported

2023-12-29 14:03

Platform

win7-20231215-en

Max time kernel

118s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.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 2500 set thread context of 2612 N/A C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe

"C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe"

C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe

"C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe"

Network

N/A

Files

memory/2500-0-0x0000000000A80000-0x0000000000BB0000-memory.dmp

memory/2500-1-0x0000000073F80000-0x000000007466E000-memory.dmp

memory/2500-2-0x0000000004D60000-0x0000000004DA0000-memory.dmp

memory/2500-3-0x0000000000560000-0x0000000000572000-memory.dmp

memory/2500-4-0x0000000073F80000-0x000000007466E000-memory.dmp

memory/2500-5-0x0000000004D60000-0x0000000004DA0000-memory.dmp

memory/2500-6-0x0000000005540000-0x00000000055E0000-memory.dmp

memory/2500-7-0x0000000001FB0000-0x0000000001FDE000-memory.dmp

memory/2612-8-0x0000000000400000-0x0000000000428000-memory.dmp

memory/2612-10-0x0000000000400000-0x0000000000428000-memory.dmp

memory/2612-14-0x0000000000400000-0x0000000000428000-memory.dmp

memory/2612-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2500-15-0x0000000073F80000-0x000000007466E000-memory.dmp

memory/2612-16-0x0000000000BB0000-0x0000000000EB3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-28 03:20

Reported

2023-12-29 14:02

Platform

win10v2004-20231215-en

Max time kernel

146s

Max time network

138s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe"

Signatures

Xloader

loader xloader

CustAttr .NET packer

Description Indicator Process Target
N/A N/A N/A N/A
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 456 set thread context of 1964 N/A C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 456 wrote to memory of 4904 N/A C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe
PID 456 wrote to memory of 4904 N/A C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe
PID 456 wrote to memory of 4904 N/A C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe
PID 456 wrote to memory of 1964 N/A C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe
PID 456 wrote to memory of 1964 N/A C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe
PID 456 wrote to memory of 1964 N/A C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe
PID 456 wrote to memory of 1964 N/A C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe
PID 456 wrote to memory of 1964 N/A C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe
PID 456 wrote to memory of 1964 N/A C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe

Processes

C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe

"C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe"

C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe

"C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe"

C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe

"C:\Users\Admin\AppData\Local\Temp\bf743b8e013bea9379fa79b76aeaaf99.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 181.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 23.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 100.5.17.2.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 32.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 88.221.135.217:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
N/A 52.142.223.178:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
GB 88.221.135.211:80 tcp
US 8.8.8.8:53 udp
GB 87.248.205.0:80 tcp
GB 87.248.205.0:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 88.221.135.217:80 tcp
GB 87.248.205.0:80 tcp
N/A 88.221.135.217:80 tcp
US 93.184.221.240:80 tcp
US 8.8.8.8:53 udp
US 52.111.227.11:443 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 204.79.197.200:443 tcp
US 204.79.197.200:443 tcp
US 204.79.197.200:443 tcp
US 204.79.197.200:443 tcp
US 204.79.197.200:443 tcp
US 8.8.8.8:53 udp

Files

memory/456-1-0x0000000074C40000-0x00000000753F0000-memory.dmp

memory/456-0-0x0000000000D50000-0x0000000000E80000-memory.dmp

memory/456-3-0x00000000058D0000-0x0000000005962000-memory.dmp

memory/456-2-0x0000000005E80000-0x0000000006424000-memory.dmp

memory/456-6-0x0000000005B30000-0x0000000005BCC000-memory.dmp

memory/456-5-0x0000000005880000-0x000000000588A000-memory.dmp

memory/456-4-0x0000000005A80000-0x0000000005A90000-memory.dmp

memory/456-7-0x00000000058A0000-0x00000000058B2000-memory.dmp

memory/456-8-0x0000000074C40000-0x00000000753F0000-memory.dmp

memory/456-9-0x0000000005A80000-0x0000000005A90000-memory.dmp

memory/456-10-0x0000000006980000-0x0000000006A20000-memory.dmp

memory/456-11-0x0000000008E00000-0x0000000008E2E000-memory.dmp

memory/1964-12-0x0000000000400000-0x0000000000428000-memory.dmp

memory/1964-15-0x0000000001800000-0x0000000001B4A000-memory.dmp

memory/456-14-0x0000000074C40000-0x00000000753F0000-memory.dmp

memory/1964-16-0x0000000001800000-0x0000000001B4A000-memory.dmp