Malware Analysis Report

2025-01-03 08:20

Sample ID 240706-jncr1ateka
Target 27c977ec531488a06df33fdbdb19b04f_JaffaCakes118
SHA256 e2e389ab119e5cbde9d055f38362186917d72ccdec03f6e39e1e7aa4fbb10d31
Tags
metasploit backdoor trojan upx evasion persistence
score
10/10

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
10/10

SHA256

e2e389ab119e5cbde9d055f38362186917d72ccdec03f6e39e1e7aa4fbb10d31

Threat Level: Known bad

The file 27c977ec531488a06df33fdbdb19b04f_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

metasploit backdoor trojan upx evasion persistence

MetaSploit

Modifies firewall policy service

UPX packed file

Checks computer location settings

Executes dropped EXE

Deletes itself

Maps connected drives based on registry

Adds Run key to start application

Drops file in System32 directory

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

Modifies registry class

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-06 07:48

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-06 07:48

Reported

2024-07-06 07:51

Platform

win7-20240221-en

Max time kernel

141s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe"

Signatures

MetaSploit

trojan backdoor metasploit

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1936 wrote to memory of 1040 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 1936 wrote to memory of 1040 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 1936 wrote to memory of 1040 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 1936 wrote to memory of 1040 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 1936 wrote to memory of 1040 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 1936 wrote to memory of 1040 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 1936 wrote to memory of 1040 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 1936 wrote to memory of 1040 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 1040 wrote to memory of 2456 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 1040 wrote to memory of 2456 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 1040 wrote to memory of 2456 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 1040 wrote to memory of 2456 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1040 -s 140

Network

N/A

Files

memory/1040-6-0x0000000000400000-0x0000000000465000-memory.dmp

memory/1040-5-0x0000000000400000-0x0000000000465000-memory.dmp

memory/1040-11-0x0000000000400000-0x0000000000465000-memory.dmp

memory/1040-9-0x0000000000400000-0x0000000000465000-memory.dmp

memory/1040-4-0x0000000000400000-0x0000000000465000-memory.dmp

memory/1040-12-0x0000000000400000-0x0000000000465000-memory.dmp

memory/1040-2-0x0000000000400000-0x0000000000465000-memory.dmp

memory/1040-0-0x0000000000400000-0x0000000000465000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-06 07:48

Reported

2024-07-06 07:51

Platform

win10v2004-20240704-en

Max time kernel

149s

Max time network

151s

Command Line

C:\Windows\Explorer.EXE

Signatures

MetaSploit

trojan backdoor metasploit

Modifies firewall policy service

evasion
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications C:\Windows\SysWOW64\wmpsx64.exe N/A
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpsx64.exe = "C:\\Windows\\SysWOW64\\wmpsx64.exe:*:Enabled:Windows Secure Media" C:\Windows\SysWOW64\wmpsx64.exe N/A
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List C:\Windows\SysWOW64\wmpsx64.exe N/A
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile C:\Windows\SysWOW64\wmpsx64.exe N/A
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications C:\Windows\SysWOW64\wmpsx64.exe N/A
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpsx64.exe = "C:\\Windows\\SysWOW64\\wmpsx64.exe:*:Enabled:Windows Secure Media" C:\Windows\SysWOW64\wmpsx64.exe N/A
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List C:\Windows\SysWOW64\wmpsx64.exe N/A
Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile C:\Windows\SysWOW64\wmpsx64.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-771719357-2485960699-3367710044-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\wmpsx64.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\wmpsx64.exe N/A
N/A N/A C:\Windows\SysWOW64\wmpsx64.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
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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Secure Media = "C:\\Windows\\SysWOW64\\wmpsx64.exe" C:\Windows\SysWOW64\wmpsx64.exe N/A

Maps connected drives based on registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum C:\Windows\SysWOW64\wmpsx64.exe N/A
Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 C:\Windows\SysWOW64\wmpsx64.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\ C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\wmpsx64.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\wmpsx64.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\ C:\Windows\SysWOW64\wmpsx64.exe N/A
File opened for modification C:\Windows\SysWOW64\wmpsx64.exe C:\Windows\SysWOW64\wmpsx64.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2344 wrote to memory of 4832 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 2344 wrote to memory of 4832 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 2344 wrote to memory of 4832 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 2344 wrote to memory of 4832 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 2344 wrote to memory of 4832 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 2344 wrote to memory of 4832 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 2344 wrote to memory of 4832 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 2344 wrote to memory of 4832 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe
PID 4832 wrote to memory of 220 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Windows\SysWOW64\wmpsx64.exe
PID 4832 wrote to memory of 220 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Windows\SysWOW64\wmpsx64.exe
PID 4832 wrote to memory of 220 N/A C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe C:\Windows\SysWOW64\wmpsx64.exe
PID 220 wrote to memory of 732 N/A C:\Windows\SysWOW64\wmpsx64.exe C:\Windows\SysWOW64\wmpsx64.exe
PID 220 wrote to memory of 732 N/A C:\Windows\SysWOW64\wmpsx64.exe C:\Windows\SysWOW64\wmpsx64.exe
PID 220 wrote to memory of 732 N/A C:\Windows\SysWOW64\wmpsx64.exe C:\Windows\SysWOW64\wmpsx64.exe
PID 220 wrote to memory of 732 N/A C:\Windows\SysWOW64\wmpsx64.exe C:\Windows\SysWOW64\wmpsx64.exe
PID 220 wrote to memory of 732 N/A C:\Windows\SysWOW64\wmpsx64.exe C:\Windows\SysWOW64\wmpsx64.exe
PID 220 wrote to memory of 732 N/A C:\Windows\SysWOW64\wmpsx64.exe C:\Windows\SysWOW64\wmpsx64.exe
PID 220 wrote to memory of 732 N/A C:\Windows\SysWOW64\wmpsx64.exe C:\Windows\SysWOW64\wmpsx64.exe
PID 220 wrote to memory of 732 N/A C:\Windows\SysWOW64\wmpsx64.exe C:\Windows\SysWOW64\wmpsx64.exe
PID 732 wrote to memory of 3428 N/A C:\Windows\SysWOW64\wmpsx64.exe C:\Windows\Explorer.EXE
PID 732 wrote to memory of 3428 N/A C:\Windows\SysWOW64\wmpsx64.exe C:\Windows\Explorer.EXE

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\27c977ec531488a06df33fdbdb19b04f_JaffaCakes118.exe"

C:\Windows\SysWOW64\wmpsx64.exe

"C:\Windows\SysWOW64\wmpsx64.exe" C:\Users\Admin\AppData\Local\Temp\27C977~1.EXE

C:\Windows\SysWOW64\wmpsx64.exe

"C:\Windows\SysWOW64\wmpsx64.exe" C:\Users\Admin\AppData\Local\Temp\27C977~1.EXE

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 nat1.level14-c01-as92013.su udp
US 204.11.237.59:80 204.11.237.59 tcp
US 8.8.8.8:53 59.237.11.204.in-addr.arpa udp
US 66.128.53.179:80 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/4832-0-0x0000000000400000-0x0000000000465000-memory.dmp

memory/4832-2-0x0000000000400000-0x0000000000465000-memory.dmp

memory/4832-3-0x0000000000400000-0x0000000000465000-memory.dmp

memory/4832-4-0x0000000000400000-0x0000000000465000-memory.dmp

C:\Windows\SysWOW64\wmpsx64.exe

MD5 27c977ec531488a06df33fdbdb19b04f
SHA1 d47354595477dbb0f1c49b18b05df80e218877f2
SHA256 e2e389ab119e5cbde9d055f38362186917d72ccdec03f6e39e1e7aa4fbb10d31
SHA512 b35b2b878156b43c8dc38ca830d018ede272664b4a213de7ee2df67688049816d39c2565c7aa4479a6f0c6c46f9f096c5907bf3facb8e65646ae14a0a9cbbf99

memory/4832-38-0x0000000000400000-0x0000000000465000-memory.dmp

memory/732-45-0x0000000000400000-0x0000000000465000-memory.dmp

memory/732-46-0x0000000000400000-0x0000000000465000-memory.dmp

memory/732-47-0x0000000000400000-0x0000000000465000-memory.dmp

memory/732-48-0x0000000000400000-0x0000000000465000-memory.dmp

memory/732-54-0x0000000000400000-0x0000000000465000-memory.dmp