Malware Analysis Report

2025-03-14 23:27

Sample ID 240407-wyrp5abb74
Target e59070776d78df670acd8041cc7e93ec_JaffaCakes118
SHA256 e1bd03bb2f8bbef5e3d5b649b6abfee4170b36016ea6213a4229cb933199f97b
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

e1bd03bb2f8bbef5e3d5b649b6abfee4170b36016ea6213a4229cb933199f97b

Threat Level: Likely malicious

The file e59070776d78df670acd8041cc7e93ec_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

persistence

Drops file in Drivers directory

Sets service image path in registry

Loads dropped DLL

Unsigned PE

Suspicious behavior: LoadsDriver

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-07 18:20

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 18:20

Reported

2024-04-07 18:22

Platform

win7-20240221-en

Max time kernel

149s

Max time network

123s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e59070776d78df670acd8041cc7e93ec_JaffaCakes118.dll,#1

Signatures

Drops file in Drivers directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\drivers\15k9r0.sys C:\Windows\SysWOW64\rundll32.exe N/A

Sets service image path in registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\{C5269DD294477B0D4626EE6427258751}\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\470F.tmp" C:\Windows\SysWOW64\rundll32.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious behavior: LoadsDriver

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 112 wrote to memory of 1164 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 112 wrote to memory of 1164 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 112 wrote to memory of 1164 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 112 wrote to memory of 1164 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 112 wrote to memory of 1164 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 112 wrote to memory of 1164 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 112 wrote to memory of 1164 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1164 wrote to memory of 1248 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1164 wrote to memory of 1248 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1164 wrote to memory of 1248 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1164 wrote to memory of 1248 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1164 wrote to memory of 1248 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1164 wrote to memory of 1248 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1164 wrote to memory of 1248 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\regsvr32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e59070776d78df670acd8041cc7e93ec_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e59070776d78df670acd8041cc7e93ec_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\275E.tmp

Network

N/A

Files

memory/1164-0-0x00000000001F0000-0x000000000026E000-memory.dmp

memory/1164-1-0x0000000010000000-0x000000001007D000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\275E.tmp

MD5 9fc47b32c3156af49540e82ad8c961b4
SHA1 1d3947a5c4504b7a89f83f5d808876134557550d
SHA256 171489c75400149f90ee67cb98f15a33af8ee6301d10e71807d53356cfd325c3
SHA512 1ac5b31c1f2f532595a7729071588a4c2975df22529a362d741d9c5f45788f7a912260c7ded6b228d6618e8a9bfb84b57f269ccb225ffdd4fd7011df9de30276

memory/1248-8-0x0000000010000000-0x0000000010060000-memory.dmp

memory/1248-7-0x00000000001D0000-0x0000000000231000-memory.dmp

memory/1248-11-0x00000000001F0000-0x000000000026E000-memory.dmp

memory/1248-19-0x00000000001F0000-0x000000000026E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 18:20

Reported

2024-04-07 18:22

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

128s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e59070776d78df670acd8041cc7e93ec_JaffaCakes118.dll,#1

Signatures

Drops file in Drivers directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\drivers\15k9r0.sys C:\Windows\SysWOW64\rundll32.exe N/A

Sets service image path in registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\{C5269DD294477B0D4626EE6427258751}\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\55E1.tmp" C:\Windows\SysWOW64\rundll32.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious behavior: LoadsDriver

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4280 wrote to memory of 3244 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4280 wrote to memory of 3244 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4280 wrote to memory of 3244 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3244 wrote to memory of 1040 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3244 wrote to memory of 1040 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3244 wrote to memory of 1040 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\regsvr32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e59070776d78df670acd8041cc7e93ec_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e59070776d78df670acd8041cc7e93ec_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\3633.tmp

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 159.113.53.23.in-addr.arpa udp
US 8.8.8.8:53 17.143.109.104.in-addr.arpa udp
US 8.8.8.8:53 216.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/3244-0-0x0000000000DB0000-0x0000000000E2E000-memory.dmp

memory/3244-3-0x0000000010000000-0x000000001007D000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\3633.tmp

MD5 9fc47b32c3156af49540e82ad8c961b4
SHA1 1d3947a5c4504b7a89f83f5d808876134557550d
SHA256 171489c75400149f90ee67cb98f15a33af8ee6301d10e71807d53356cfd325c3
SHA512 1ac5b31c1f2f532595a7729071588a4c2975df22529a362d741d9c5f45788f7a912260c7ded6b228d6618e8a9bfb84b57f269ccb225ffdd4fd7011df9de30276

memory/1040-7-0x0000000000A90000-0x0000000000AF1000-memory.dmp

memory/1040-10-0x0000000010000000-0x0000000010060000-memory.dmp