Malware Analysis Report

2025-03-14 22:27

Sample ID 240407-3chzeshf2v
Target e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118
SHA256 99efe177d328d788c6d1712517f49af30cf819c8d41b657390d8970d741fe5dd
Tags
upx persistence
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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
7/10

SHA256

99efe177d328d788c6d1712517f49af30cf819c8d41b657390d8970d741fe5dd

Threat Level: Shows suspicious behavior

The file e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

upx persistence

UPX packed file

Executes dropped EXE

Loads dropped DLL

Adds Run key to start application

Drops file in System32 directory

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-07 23:22

Signatures

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 23:22

Reported

2024-04-07 23:24

Platform

win7-20240319-en

Max time kernel

150s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\win32.exe N/A

UPX packed file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000\Software\Microsoft\Windows\CurrentVersion\Run\wupd = "C:\\Windows\\system32\\win32.exe" C:\Users\Admin\AppData\Local\Temp\e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\win32.exe C:\Users\Admin\AppData\Local\Temp\e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\win32.exe C:\Users\Admin\AppData\Local\Temp\e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\win32.exe C:\Windows\SysWOW64\win32.exe N/A
File created C:\Windows\SysWOW64\zlbw.dll C:\Windows\SysWOW64\win32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\win32.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118.exe"

C:\Windows\SysWOW64\win32.exe

win32.exe

Network

Country Destination Domain Proto
US 65.75.151.192:80 tcp
US 65.75.151.192:80 tcp
US 65.75.151.192:80 tcp
US 65.75.151.192:80 tcp
US 65.75.151.192:80 tcp
US 65.75.151.192:80 tcp
US 65.75.151.191:80 tcp
US 65.75.151.192:80 tcp

Files

memory/2276-0-0x0000000000400000-0x000000000047D000-memory.dmp

\Windows\SysWOW64\win32.exe

MD5 e6196edd2050f5447e7389c158a3ab4f
SHA1 f430d6fb4373dbfba951329cdfc448f6e62f1ea4
SHA256 99efe177d328d788c6d1712517f49af30cf819c8d41b657390d8970d741fe5dd
SHA512 fe82d0ad88b4fd0e799acd26f9cb466019498a0a9a14cf2b5c104dcaea32cf0d8c7e5ead38311b2094614044efaf2313609c8c818705c15817caf1617745ae26

memory/2276-3-0x0000000000400000-0x000000000047D000-memory.dmp

memory/2484-11-0x0000000000400000-0x000000000047D000-memory.dmp

memory/2484-13-0x0000000000400000-0x000000000047D000-memory.dmp

memory/2484-22-0x0000000000400000-0x000000000047D000-memory.dmp

\Windows\SysWOW64\zlbw.dll

MD5 f42601d4ac18bb06d830b6f8e4500adf
SHA1 66ff00d72ed68fa417638b514610c7cf611ddb90
SHA256 2c54ec6433444a5173a38c75f46c8bec63f90c3ed6efea20beac76c67bc27c95
SHA512 8011e932f363fd5730a2cf27ca36a8b62e1c1e61d188bb08b6aad927e2b1a06f8b2ee1c26fff4863fa99d1675fc72d4159b331a3ae25acee0b18e3e41dcb741f

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 23:22

Reported

2024-04-07 23:24

Platform

win10v2004-20240226-en

Max time kernel

151s

Max time network

163s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\win32.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\win32.exe N/A

UPX packed file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wupd = "C:\\Windows\\system32\\win32.exe" C:\Users\Admin\AppData\Local\Temp\e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\win32.exe C:\Users\Admin\AppData\Local\Temp\e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\win32.exe C:\Windows\SysWOW64\win32.exe N/A
File created C:\Windows\SysWOW64\zlbw.dll C:\Windows\SysWOW64\win32.exe N/A
File created C:\Windows\SysWOW64\win32.exe C:\Users\Admin\AppData\Local\Temp\e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\win32.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\e6196edd2050f5447e7389c158a3ab4f_JaffaCakes118.exe"

C:\Windows\SysWOW64\win32.exe

win32.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 159.113.53.23.in-addr.arpa udp
US 8.8.8.8:53 178.223.142.52.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 65.75.151.192:80 tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 130.118.77.104.in-addr.arpa udp
US 65.75.151.192:80 tcp
US 65.75.151.192:80 tcp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 65.75.151.192:80 tcp
US 65.75.151.191:80 tcp
US 8.8.8.8:53 198.111.78.13.in-addr.arpa udp

Files

memory/2308-0-0x0000000000400000-0x000000000047D000-memory.dmp

memory/2308-4-0x0000000000400000-0x000000000047D000-memory.dmp

C:\Windows\SysWOW64\win32.exe

MD5 e6196edd2050f5447e7389c158a3ab4f
SHA1 f430d6fb4373dbfba951329cdfc448f6e62f1ea4
SHA256 99efe177d328d788c6d1712517f49af30cf819c8d41b657390d8970d741fe5dd
SHA512 fe82d0ad88b4fd0e799acd26f9cb466019498a0a9a14cf2b5c104dcaea32cf0d8c7e5ead38311b2094614044efaf2313609c8c818705c15817caf1617745ae26

memory/4680-7-0x0000000000400000-0x000000000047D000-memory.dmp

memory/4680-8-0x0000000000400000-0x000000000047D000-memory.dmp

memory/4680-13-0x0000000000400000-0x000000000047D000-memory.dmp

C:\Windows\SysWOW64\zlbw.dll

MD5 f42601d4ac18bb06d830b6f8e4500adf
SHA1 66ff00d72ed68fa417638b514610c7cf611ddb90
SHA256 2c54ec6433444a5173a38c75f46c8bec63f90c3ed6efea20beac76c67bc27c95
SHA512 8011e932f363fd5730a2cf27ca36a8b62e1c1e61d188bb08b6aad927e2b1a06f8b2ee1c26fff4863fa99d1675fc72d4159b331a3ae25acee0b18e3e41dcb741f

memory/4680-19-0x0000000000400000-0x000000000047D000-memory.dmp

memory/4680-23-0x0000000000400000-0x000000000047D000-memory.dmp