Malware Analysis Report

2025-04-13 10:47

Sample ID 231228-d35hnscggj
Target c04f70436cf53db113a202251a48c4a5
SHA256 98308710dc37148bf2d9b00829e791e1b2eb92703e1cd80b13e9e1a58d751651
Tags
xloader c8ec 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

98308710dc37148bf2d9b00829e791e1b2eb92703e1cd80b13e9e1a58d751651

Threat Level: Known bad

The file c04f70436cf53db113a202251a48c4a5 was found to be: Known bad.

Malicious Activity Summary

xloader c8ec 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

2023-12-28 03:32

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-28 03:32

Reported

2023-12-29 14:28

Platform

win7-20231215-en

Max time kernel

122s

Max time network

133s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.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 2176 set thread context of 2112 N/A C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.exe C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.exe

"C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.exe"

C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.exe

"C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.exe"

Network

N/A

Files

memory/2176-0-0x00000000749D0000-0x00000000750BE000-memory.dmp

memory/2176-1-0x00000000000B0000-0x00000000001FA000-memory.dmp

memory/2176-2-0x0000000000670000-0x00000000006B0000-memory.dmp

memory/2176-3-0x0000000000370000-0x0000000000382000-memory.dmp

memory/2176-4-0x00000000749D0000-0x00000000750BE000-memory.dmp

memory/2176-5-0x0000000000670000-0x00000000006B0000-memory.dmp

memory/2176-6-0x0000000005560000-0x0000000005600000-memory.dmp

memory/2176-7-0x0000000001FF0000-0x000000000201E000-memory.dmp

memory/2112-8-0x0000000000400000-0x0000000000428000-memory.dmp

memory/2112-12-0x0000000000400000-0x0000000000428000-memory.dmp

memory/2176-13-0x00000000749D0000-0x00000000750BE000-memory.dmp

memory/2112-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2112-9-0x0000000000400000-0x0000000000428000-memory.dmp

memory/2112-14-0x0000000000AC0000-0x0000000000DC3000-memory.dmp

memory/2112-15-0x0000000000AC0000-0x0000000000DC3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-28 03:32

Reported

2023-12-29 14:28

Platform

win10v2004-20231215-en

Max time kernel

161s

Max time network

176s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.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 2172 set thread context of 4984 N/A C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.exe C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.exe

"C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.exe"

C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.exe

"C:\Users\Admin\AppData\Local\Temp\c04f70436cf53db113a202251a48c4a5.exe"

Network

Country Destination Domain Proto
NL 52.142.223.178:80 tcp
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 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.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 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.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 8.8.8.8:53 100.5.17.2.in-addr.arpa 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 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 189.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 196.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 55.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 32.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp

Files

memory/2172-0-0x0000000074DD0000-0x0000000075580000-memory.dmp

memory/2172-1-0x0000000000E80000-0x0000000000FCA000-memory.dmp

memory/2172-2-0x0000000005D90000-0x0000000006334000-memory.dmp

memory/2172-3-0x0000000005880000-0x0000000005912000-memory.dmp

memory/2172-4-0x00000000059A0000-0x00000000059B0000-memory.dmp

memory/2172-5-0x0000000005930000-0x000000000593A000-memory.dmp

memory/2172-6-0x0000000005B50000-0x0000000005BEC000-memory.dmp

memory/2172-7-0x0000000005990000-0x00000000059A2000-memory.dmp

memory/2172-8-0x0000000074DD0000-0x0000000075580000-memory.dmp

memory/2172-9-0x00000000059A0000-0x00000000059B0000-memory.dmp

memory/2172-10-0x0000000006700000-0x00000000067A0000-memory.dmp

memory/2172-11-0x0000000001770000-0x000000000179E000-memory.dmp

memory/4984-12-0x0000000000400000-0x0000000000428000-memory.dmp

memory/4984-14-0x0000000001190000-0x00000000014DA000-memory.dmp

memory/2172-15-0x0000000074DD0000-0x0000000075580000-memory.dmp