Malware Analysis Report

2024-10-19 02:21

Sample ID 240402-xy9rdaah72
Target 94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118
SHA256 098a32bfcd332f71fdb65cf704994c70cf6390110340c809ae2cc66bddfbde04
Tags
xloader mxnu loader rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

098a32bfcd332f71fdb65cf704994c70cf6390110340c809ae2cc66bddfbde04

Threat Level: Known bad

The file 94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

xloader mxnu loader rat

Xloader

Xloader payload

Loads dropped DLL

Suspicious use of SetThreadContext

Enumerates physical storage devices

Program crash

Unsigned PE

NSIS installer

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-02 19:16

Signatures

Unsigned PE

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

NSIS installer

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-02 19:16

Reported

2024-04-02 19:19

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe"

Signatures

Xloader

loader xloader

Xloader payload

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 41.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 84.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 24.173.189.20.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsy8156.tmp\kwhtcvb.dll

MD5 c47052adbbfd727643e1f813bbee9d0a
SHA1 393318978321ed22187c5c81482399f253ffe1e2
SHA256 48f8ef93b698568f608e762cacef1b29a80bcf54bde9534a1de426242e86209a
SHA512 1dca295a1a76cf34e7b5e6463c3479ac42b1ec54486eba416c76248ef0a3ce63c1e4149eb9bc86a400c441210881c389957b0ffc04f6ba2880dde9daa5bada3c

memory/4704-8-0x0000000000400000-0x0000000000429000-memory.dmp

memory/4704-9-0x0000000000BD0000-0x0000000000F1A000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-04-02 19:16

Reported

2024-04-02 19:19

Platform

win7-20240221-en

Max time kernel

120s

Max time network

123s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\kwhtcvb.dll,#1

Signatures

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\kwhtcvb.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\kwhtcvb.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 848 -s 276

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-04-02 19:16

Reported

2024-04-02 19:19

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

152s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\kwhtcvb.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 212 wrote to memory of 4636 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 212 wrote to memory of 4636 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 212 wrote to memory of 4636 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\kwhtcvb.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\kwhtcvb.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4636 -ip 4636

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4636 -s 628

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 218.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 145.110.86.104.in-addr.arpa udp
US 8.8.8.8:53 84.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 8.173.189.20.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-02 19:16

Reported

2024-04-02 19:19

Platform

win7-20240319-en

Max time kernel

119s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe"

Signatures

Xloader

loader xloader

Xloader payload

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2180 wrote to memory of 2304 N/A C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe
PID 2180 wrote to memory of 2304 N/A C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe
PID 2180 wrote to memory of 2304 N/A C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe
PID 2180 wrote to memory of 2304 N/A C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe
PID 2180 wrote to memory of 2304 N/A C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe
PID 2180 wrote to memory of 2304 N/A C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe
PID 2180 wrote to memory of 2304 N/A C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\94dfabcfd1c2a9197ff2938cd52bad46_JaffaCakes118.exe"

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\nsi4A69.tmp\kwhtcvb.dll

MD5 c47052adbbfd727643e1f813bbee9d0a
SHA1 393318978321ed22187c5c81482399f253ffe1e2
SHA256 48f8ef93b698568f608e762cacef1b29a80bcf54bde9534a1de426242e86209a
SHA512 1dca295a1a76cf34e7b5e6463c3479ac42b1ec54486eba416c76248ef0a3ce63c1e4149eb9bc86a400c441210881c389957b0ffc04f6ba2880dde9daa5bada3c

memory/2304-8-0x0000000000400000-0x0000000000429000-memory.dmp

memory/2304-11-0x00000000008B0000-0x0000000000BB3000-memory.dmp

memory/2304-12-0x00000000008B0000-0x0000000000BB3000-memory.dmp