Malware Analysis Report

2024-10-19 02:22

Sample ID 240402-2d36baff76
Target 98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118
SHA256 1bbc8a34b7590c1593c5a79a8d0f93b17a162f44893c37aa11e4cb9e0e2d96bf
Tags
xloader b2c0 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

1bbc8a34b7590c1593c5a79a8d0f93b17a162f44893c37aa11e4cb9e0e2d96bf

Threat Level: Known bad

The file 98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

xloader b2c0 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 22:28

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 22:28

Reported

2024-04-02 22:31

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_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\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 152.33.115.104.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 200.64.52.20.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsa6235.tmp\gyalquzbu.dll

MD5 a8caa6d267951ad22e835233b5e50c46
SHA1 45c722c5958d99727a95d30eaa3032203d1f4ab2
SHA256 db7b70b0734285b8d9a1f3617e55603b0cb649d9bf0b7fbf8988c44e684f4e76
SHA512 9ee74bf576554210f8923dda8aa28f6dc7f3c5aa52da7b48a94beaf56cb4e27f1c3d0387cc9116e467631bc13c0e743341129bffa84b9db16ace1248a53b4cd7

memory/4596-8-0x0000000000400000-0x0000000000429000-memory.dmp

memory/4596-9-0x0000000000A90000-0x0000000000DDA000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-04-02 22:28

Reported

2024-04-02 22:31

Platform

win7-20240221-en

Max time kernel

118s

Max time network

122s

Command Line

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

Signatures

Processes

C:\Windows\system32\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2028 -s 252

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-04-02 22:28

Reported

2024-04-02 22:31

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

152s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\gyalquzbu.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 2764 wrote to memory of 1808 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2764 wrote to memory of 1808 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2764 wrote to memory of 1808 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\gyalquzbu.dll,#1

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1808 -ip 1808

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1808 -s 748

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 84.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 90.16.208.104.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-02 22:28

Reported

2024-04-02 22:31

Platform

win7-20240319-en

Max time kernel

122s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_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\98d2d5ac3bd493d77f0a7300a43d045b_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\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1904 wrote to memory of 2172 N/A C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe
PID 1904 wrote to memory of 2172 N/A C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe
PID 1904 wrote to memory of 2172 N/A C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe
PID 1904 wrote to memory of 2172 N/A C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe
PID 1904 wrote to memory of 2172 N/A C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe
PID 1904 wrote to memory of 2172 N/A C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe
PID 1904 wrote to memory of 2172 N/A C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\98d2d5ac3bd493d77f0a7300a43d045b_JaffaCakes118.exe"

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\nst4FD6.tmp\gyalquzbu.dll

MD5 a8caa6d267951ad22e835233b5e50c46
SHA1 45c722c5958d99727a95d30eaa3032203d1f4ab2
SHA256 db7b70b0734285b8d9a1f3617e55603b0cb649d9bf0b7fbf8988c44e684f4e76
SHA512 9ee74bf576554210f8923dda8aa28f6dc7f3c5aa52da7b48a94beaf56cb4e27f1c3d0387cc9116e467631bc13c0e743341129bffa84b9db16ace1248a53b4cd7

memory/2172-8-0x0000000000400000-0x0000000000429000-memory.dmp

memory/2172-10-0x0000000000810000-0x0000000000B13000-memory.dmp