Malware Analysis Report

2025-04-13 10:56

Sample ID 231225-jcykbscfhk
Target 0f03eab5505bb4a4df99ccead0fc28f4
SHA256 aaa40ee2b509dc2b3a2f12f62d70565c85eb9aa13a7efd43bb86cfba0a3e1a88
Tags
xloader ushb 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

aaa40ee2b509dc2b3a2f12f62d70565c85eb9aa13a7efd43bb86cfba0a3e1a88

Threat Level: Known bad

The file 0f03eab5505bb4a4df99ccead0fc28f4 was found to be: Known bad.

Malicious Activity Summary

xloader ushb loader rat

Xloader

Xloader payload

CustAttr .NET packer

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-12-25 07:32

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-25 07:32

Reported

2023-12-25 19:54

Platform

win7-20231215-en

Max time kernel

121s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.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
N/A N/A N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1472 set thread context of 2612 N/A C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe

"C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe"

C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe

"C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe"

Network

N/A

Files

memory/1472-0-0x0000000000BA0000-0x0000000000CAE000-memory.dmp

memory/1472-1-0x0000000074260000-0x000000007494E000-memory.dmp

memory/1472-2-0x0000000004D30000-0x0000000004D70000-memory.dmp

memory/1472-3-0x00000000003D0000-0x00000000003E2000-memory.dmp

memory/1472-4-0x0000000074260000-0x000000007494E000-memory.dmp

memory/1472-5-0x0000000004D30000-0x0000000004D70000-memory.dmp

memory/1472-6-0x0000000005760000-0x00000000057D6000-memory.dmp

memory/1472-7-0x0000000000AF0000-0x0000000000B20000-memory.dmp

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

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

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

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

memory/1472-15-0x0000000074260000-0x000000007494E000-memory.dmp

memory/2612-16-0x0000000000860000-0x0000000000B63000-memory.dmp

memory/2612-17-0x0000000000860000-0x0000000000B63000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-25 07:32

Reported

2023-12-25 19:54

Platform

win10v2004-20231215-en

Max time kernel

150s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.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 232 set thread context of 1960 N/A C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 232 wrote to memory of 4632 N/A C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe
PID 232 wrote to memory of 4632 N/A C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe
PID 232 wrote to memory of 4632 N/A C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe
PID 232 wrote to memory of 1960 N/A C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe
PID 232 wrote to memory of 1960 N/A C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe
PID 232 wrote to memory of 1960 N/A C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe
PID 232 wrote to memory of 1960 N/A C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe
PID 232 wrote to memory of 1960 N/A C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe
PID 232 wrote to memory of 1960 N/A C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe

Processes

C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe

"C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe"

C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe

"C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe"

C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe

"C:\Users\Admin\AppData\Local\Temp\0f03eab5505bb4a4df99ccead0fc28f4.exe"

Network

Country Destination Domain Proto
US 20.231.121.79:80 tcp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 83.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 216.254.1.23.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 195.233.44.23.in-addr.arpa udp
US 8.8.8.8:53 16.234.44.23.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 106.27.33.23.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 57.169.31.20.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 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 203.254.1.23.in-addr.arpa udp
US 8.8.8.8:53 42.218.122.92.in-addr.arpa udp
US 8.8.8.8:53 200.254.1.23.in-addr.arpa udp
US 8.8.8.8:53 112.27.33.23.in-addr.arpa udp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
US 8.8.8.8:53 udp
N/A 52.111.227.11:443 tcp
US 8.8.8.8:53 udp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
US 8.8.8.8:53 udp
US 192.229.221.95:80 tcp
US 8.8.8.8:53 udp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp
FR 23.1.254.203:80 tcp

Files

memory/232-0-0x0000000000DC0000-0x0000000000ECE000-memory.dmp

memory/232-1-0x0000000074D40000-0x00000000754F0000-memory.dmp

memory/232-2-0x00000000058D0000-0x000000000596C000-memory.dmp

memory/232-3-0x0000000005F20000-0x00000000064C4000-memory.dmp

memory/232-4-0x0000000005970000-0x0000000005A02000-memory.dmp

memory/232-5-0x0000000005B70000-0x0000000005B80000-memory.dmp

memory/232-6-0x00000000058C0000-0x00000000058CA000-memory.dmp

memory/232-7-0x0000000005B80000-0x0000000005BD6000-memory.dmp

memory/232-8-0x0000000005D50000-0x0000000005D62000-memory.dmp

memory/232-9-0x0000000074D40000-0x00000000754F0000-memory.dmp

memory/232-10-0x0000000005B70000-0x0000000005B80000-memory.dmp

memory/232-11-0x00000000071E0000-0x0000000007256000-memory.dmp

memory/232-12-0x0000000007270000-0x00000000072A0000-memory.dmp

memory/1960-13-0x0000000000400000-0x0000000000428000-memory.dmp

memory/232-15-0x0000000074D40000-0x00000000754F0000-memory.dmp

memory/1960-16-0x0000000001B20000-0x0000000001E6A000-memory.dmp