Malware Analysis Report

2025-03-14 22:10

Sample ID 240407-21s9mahd23
Target e60f7218d20c941220c342c4e5748874_JaffaCakes118
SHA256 3552cf1bf7d0b629737e0025e28f58878113b9bee631e0c1079a2459dc26978e
Tags
persistence
score
8/10

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
8/10

SHA256

3552cf1bf7d0b629737e0025e28f58878113b9bee631e0c1079a2459dc26978e

Threat Level: Likely malicious

The file e60f7218d20c941220c342c4e5748874_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

persistence

Sets DLL path for service in the registry

Loads dropped DLL

Drops file in System32 directory

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-07 23:03

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 23:03

Reported

2024-04-07 23:05

Platform

win7-20240221-en

Max time kernel

142s

Max time network

144s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e60f7218d20c941220c342c4e5748874_JaffaCakes118.dll,#1

Signatures

Sets DLL path for service in the registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\3800hk\Parameters\ServiceDll = "C:\\Windows\\system32\\3800hk.dll" C:\Windows\SysWOW64\rundll32.exe N/A

Loads dropped DLL

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\3800hk.dll C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification C:\Windows\SysWOW64\3800hk.dll C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2012 wrote to memory of 2192 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2012 wrote to memory of 2192 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2012 wrote to memory of 2192 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2012 wrote to memory of 2192 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2012 wrote to memory of 2192 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2012 wrote to memory of 2192 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2012 wrote to memory of 2192 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\e60f7218d20c941220c342c4e5748874_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e60f7218d20c941220c342c4e5748874_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k netsvcs

Network

Country Destination Domain Proto
US 8.8.8.8:53 wobei.3322.org udp

Files

\??\c:\windows\SysWOW64\3800hk.dll

MD5 e60f7218d20c941220c342c4e5748874
SHA1 13e6d22a93e26f618af3ea05dee256a769a3cbec
SHA256 3552cf1bf7d0b629737e0025e28f58878113b9bee631e0c1079a2459dc26978e
SHA512 f4b42f93f2fc257234ba2f085da978e3426f7cd4a886b96ad60ab55dde8312ba6b1a51ec9a8c8d5b4ebd4d7abea1ae445e714ca44ca350b56e83c0c8af2eaa96

memory/2020-3-0x00000000000A0000-0x00000000000B6000-memory.dmp

memory/2020-5-0x00000000000A0000-0x00000000000B6000-memory.dmp

memory/2192-4-0x0000000000400000-0x0000000000416000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 23:03

Reported

2024-04-07 23:05

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

153s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e60f7218d20c941220c342c4e5748874_JaffaCakes118.dll,#1

Signatures

Sets DLL path for service in the registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\3800hk\Parameters\ServiceDll = "C:\\Windows\\system32\\3800hk.dll" C:\Windows\SysWOW64\rundll32.exe N/A

Loads dropped DLL

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\3800hk.dll C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification C:\Windows\SysWOW64\3800hk.dll C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 368 wrote to memory of 3920 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 368 wrote to memory of 3920 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 368 wrote to memory of 3920 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\e60f7218d20c941220c342c4e5748874_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e60f7218d20c941220c342c4e5748874_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k netsvcs

Network

Country Destination Domain Proto
US 8.8.8.8:53 wobei.3322.org udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 wobei.3322.org udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 wobei.3322.org udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 121.118.77.104.in-addr.arpa udp
US 8.8.8.8:53 wobei.3322.org udp
US 8.8.8.8:53 wobei.3322.org udp
US 8.8.8.8:53 wobei.3322.org udp
US 8.8.8.8:53 wobei.3322.org udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 wobei.3322.org udp
US 8.8.8.8:53 wobei.3322.org udp
US 8.8.8.8:53 wobei.3322.org udp
US 8.8.8.8:53 14.173.189.20.in-addr.arpa udp

Files

\??\c:\windows\SysWOW64\3800hk.dll

MD5 e60f7218d20c941220c342c4e5748874
SHA1 13e6d22a93e26f618af3ea05dee256a769a3cbec
SHA256 3552cf1bf7d0b629737e0025e28f58878113b9bee631e0c1079a2459dc26978e
SHA512 f4b42f93f2fc257234ba2f085da978e3426f7cd4a886b96ad60ab55dde8312ba6b1a51ec9a8c8d5b4ebd4d7abea1ae445e714ca44ca350b56e83c0c8af2eaa96

memory/3920-3-0x0000000000400000-0x0000000000416000-memory.dmp

memory/4816-4-0x0000000000400000-0x0000000000416000-memory.dmp