Malware Analysis Report

2025-04-13 10:47

Sample ID 231227-2h8llagbcn
Target b8ae19595ed2b1c06372f904f28c8983
SHA256 2fbe2f9ceef4deca8b67d6cb32dc3cd8ebd422a95c24cf4392837f95ad560473
Tags
xloader uqf5 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

2fbe2f9ceef4deca8b67d6cb32dc3cd8ebd422a95c24cf4392837f95ad560473

Threat Level: Known bad

The file b8ae19595ed2b1c06372f904f28c8983 was found to be: Known bad.

Malicious Activity Summary

xloader uqf5 loader rat

Xloader

CustAttr .NET packer

Xloader payload

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-12-27 22:36

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-27 22:36

Reported

2023-12-29 10:42

Platform

win7-20231215-en

Max time kernel

118s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.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 2916 set thread context of 2488 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe

"C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe"

C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe

"C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe"

Network

N/A

Files

memory/2916-0-0x0000000000FE0000-0x0000000001096000-memory.dmp

memory/2916-1-0x0000000074710000-0x0000000074DFE000-memory.dmp

memory/2916-2-0x0000000000570000-0x00000000005B0000-memory.dmp

memory/2916-3-0x00000000003C0000-0x00000000003D2000-memory.dmp

memory/2916-4-0x0000000074710000-0x0000000074DFE000-memory.dmp

memory/2916-5-0x0000000000570000-0x00000000005B0000-memory.dmp

memory/2916-6-0x0000000005300000-0x000000000537C000-memory.dmp

memory/2916-7-0x0000000000530000-0x0000000000564000-memory.dmp

memory/2488-9-0x0000000000400000-0x0000000000429000-memory.dmp

memory/2488-12-0x0000000000400000-0x0000000000429000-memory.dmp

memory/2916-13-0x0000000074710000-0x0000000074DFE000-memory.dmp

memory/2488-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2488-8-0x0000000000400000-0x0000000000429000-memory.dmp

memory/2488-14-0x00000000008F0000-0x0000000000BF3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-27 22:36

Reported

2023-12-29 10:40

Platform

win10v2004-20231215-en

Max time kernel

149s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.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 2832 set thread context of 376 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2832 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe
PID 2832 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe
PID 2832 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe
PID 2832 wrote to memory of 3852 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe
PID 2832 wrote to memory of 3852 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe
PID 2832 wrote to memory of 3852 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe
PID 2832 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe
PID 2832 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe
PID 2832 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe
PID 2832 wrote to memory of 376 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe
PID 2832 wrote to memory of 376 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe
PID 2832 wrote to memory of 376 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe
PID 2832 wrote to memory of 376 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe
PID 2832 wrote to memory of 376 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe
PID 2832 wrote to memory of 376 N/A C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe

"C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe"

C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe

"C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe"

C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe

"C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe"

C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe

"C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe"

C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe

"C:\Users\Admin\AppData\Local\Temp\b8ae19595ed2b1c06372f904f28c8983.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 17.53.126.40.in-addr.arpa udp
US 138.91.171.81:80 tcp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 187.178.17.96.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 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 114.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 176.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 32.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
GB 88.221.134.18:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.16.110.114:80 tcp
US 8.8.8.8:53 udp
US 138.91.171.81:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 udp
GB 88.221.135.217:80 tcp
US 8.8.8.8:53 udp
GB 88.221.135.217:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
GB 96.17.178.194:80 tcp
GB 96.17.178.194:80 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
US 52.111.227.13:443 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 55.36.223.20.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
US 8.8.8.8:53 211.178.17.96.in-addr.arpa udp
GB 96.17.178.211:80 tcp
GB 96.17.178.211:80 tcp
GB 96.17.178.211:80 tcp

Files

memory/2832-1-0x00000000749D0000-0x0000000075180000-memory.dmp

memory/2832-3-0x00000000052C0000-0x0000000005352000-memory.dmp

memory/2832-4-0x0000000005360000-0x00000000053FC000-memory.dmp

memory/2832-5-0x0000000005250000-0x0000000005260000-memory.dmp

memory/2832-6-0x0000000005270000-0x000000000527A000-memory.dmp

memory/2832-2-0x0000000005870000-0x0000000005E14000-memory.dmp

memory/2832-0-0x00000000007B0000-0x0000000000866000-memory.dmp

memory/2832-7-0x0000000002AE0000-0x0000000002AF2000-memory.dmp

memory/2832-8-0x00000000749D0000-0x0000000075180000-memory.dmp

memory/2832-9-0x0000000005250000-0x0000000005260000-memory.dmp

memory/2832-10-0x0000000008220000-0x000000000829C000-memory.dmp

memory/2832-11-0x00000000082E0000-0x0000000008314000-memory.dmp

memory/376-15-0x0000000001170000-0x00000000014BA000-memory.dmp

memory/2832-14-0x00000000749D0000-0x0000000075180000-memory.dmp

memory/376-12-0x0000000000400000-0x0000000000429000-memory.dmp

memory/376-16-0x0000000001170000-0x00000000014BA000-memory.dmp