Malware Analysis Report

2025-01-22 12:44

Sample ID 240623-arydfasakh
Target 0492f8c8547711f75e0ab55be38474d8_JaffaCakes118
SHA256 99ed9696332eab95e0de439fa61c1f7e6bb8235ec5e40b679bb003dd7413500a
Tags
aspackv2 persistence upx
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

99ed9696332eab95e0de439fa61c1f7e6bb8235ec5e40b679bb003dd7413500a

Threat Level: Known bad

The file 0492f8c8547711f75e0ab55be38474d8_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

aspackv2 persistence upx

Modifies WinLogon for persistence

Boot or Logon Autostart Execution: Active Setup

Adds policy Run key to start application

ASPack v2.12-2.42

Executes dropped EXE

Loads dropped DLL

UPX packed file

Unexpected DNS network traffic destination

Modifies WinLogon

Drops file in System32 directory

Drops file in Windows directory

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Runs net.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-23 00:27

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-23 00:27

Reported

2024-06-23 00:29

Platform

win7-20240508-en

Max time kernel

150s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0492f8c8547711f75e0ab55be38474d8_JaffaCakes118.exe"

Signatures

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.exe" C:\Users\Admin\AppData\Local\Temp\Exporer32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.exe" C:\Windows\services.exe N/A

Adds policy Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run C:\Windows\services.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe" C:\Windows\services.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run C:\Users\Admin\AppData\Local\Temp\Exporer32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe" C:\Users\Admin\AppData\Local\Temp\Exporer32.exe N/A

Boot or Logon Autostart Execution: Active Setup

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y} C:\Users\Admin\AppData\Local\Temp\Exporer32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\ C:\Users\Admin\AppData\Local\Temp\Exporer32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe" C:\Users\Admin\AppData\Local\Temp\Exporer32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\ C:\Windows\services.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe" C:\Windows\services.exe N/A

ASPack v2.12-2.42

aspackv2
Description Indicator Process Target
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Exporer32.exe N/A
N/A N/A C:\Windows\SysWOW64\fservice.exe N/A
N/A N/A C:\Windows\services.exe N/A

UPX packed file

upx
Description Indicator Process Target
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Unexpected DNS network traffic destination

Description Indicator Process Target
Destination IP 151.164.23.201 N/A N/A
Destination IP 151.164.23.201 N/A N/A

Modifies WinLogon

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\ C:\Users\Admin\AppData\Local\Temp\Exporer32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\ C:\Windows\services.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\fservice.exe C:\Windows\services.exe N/A
File created C:\Windows\SysWOW64\fservice.exe C:\Users\Admin\AppData\Local\Temp\Exporer32.exe N/A
File opened for modification C:\Windows\SysWOW64\fservice.exe C:\Users\Admin\AppData\Local\Temp\Exporer32.exe N/A
File created C:\Windows\SysWOW64\fservice.exe C:\Windows\SysWOW64\fservice.exe N/A
File opened for modification C:\Windows\SysWOW64\fservice.exe C:\Windows\SysWOW64\fservice.exe N/A
File created C:\Windows\SysWOW64\winkey.dll C:\Windows\services.exe N/A
File created C:\Windows\SysWOW64\reginv.dll C:\Windows\services.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\system\sservice.exe C:\Windows\SysWOW64\fservice.exe N/A
File created C:\Windows\system\sservice.exe C:\Windows\services.exe N/A
File opened for modification C:\Windows\system\sservice.exe C:\Windows\services.exe N/A
File created C:\Windows\system\sservice.exe C:\Users\Admin\AppData\Local\Temp\Exporer32.exe N/A
File opened for modification C:\Windows\system\sservice.exe C:\Users\Admin\AppData\Local\Temp\Exporer32.exe N/A
File created C:\Windows\services.exe C:\Windows\SysWOW64\fservice.exe N/A
File opened for modification C:\Windows\services.exe C:\Windows\SysWOW64\fservice.exe N/A
File created C:\Windows\system\sservice.exe C:\Windows\SysWOW64\fservice.exe N/A

Enumerates physical storage devices

Runs net.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\0492f8c8547711f75e0ab55be38474d8_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\0492f8c8547711f75e0ab55be38474d8_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\0492f8c8547711f75e0ab55be38474d8_JaffaCakes118.exe N/A
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Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\0492f8c8547711f75e0ab55be38474d8_JaffaCakes118.exe N/A
N/A N/A C:\Windows\services.exe N/A
N/A N/A C:\Windows\services.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2176 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\0492f8c8547711f75e0ab55be38474d8_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Exporer32.exe
PID 2176 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\0492f8c8547711f75e0ab55be38474d8_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Exporer32.exe
PID 2176 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\0492f8c8547711f75e0ab55be38474d8_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Exporer32.exe
PID 2176 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\0492f8c8547711f75e0ab55be38474d8_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Exporer32.exe
PID 2764 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\Exporer32.exe C:\Windows\SysWOW64\fservice.exe
PID 2764 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\Exporer32.exe C:\Windows\SysWOW64\fservice.exe
PID 2764 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\Exporer32.exe C:\Windows\SysWOW64\fservice.exe
PID 2764 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\Exporer32.exe C:\Windows\SysWOW64\fservice.exe
PID 2636 wrote to memory of 2656 N/A C:\Windows\SysWOW64\fservice.exe C:\Windows\services.exe
PID 2636 wrote to memory of 2656 N/A C:\Windows\SysWOW64\fservice.exe C:\Windows\services.exe
PID 2636 wrote to memory of 2656 N/A C:\Windows\SysWOW64\fservice.exe C:\Windows\services.exe
PID 2636 wrote to memory of 2656 N/A C:\Windows\SysWOW64\fservice.exe C:\Windows\services.exe
PID 2656 wrote to memory of 2536 N/A C:\Windows\services.exe C:\Windows\SysWOW64\NET.exe
PID 2656 wrote to memory of 2536 N/A C:\Windows\services.exe C:\Windows\SysWOW64\NET.exe
PID 2656 wrote to memory of 2536 N/A C:\Windows\services.exe C:\Windows\SysWOW64\NET.exe
PID 2656 wrote to memory of 2536 N/A C:\Windows\services.exe C:\Windows\SysWOW64\NET.exe
PID 2656 wrote to memory of 2548 N/A C:\Windows\services.exe C:\Windows\SysWOW64\NET.exe
PID 2656 wrote to memory of 2548 N/A C:\Windows\services.exe C:\Windows\SysWOW64\NET.exe
PID 2656 wrote to memory of 2548 N/A C:\Windows\services.exe C:\Windows\SysWOW64\NET.exe
PID 2656 wrote to memory of 2548 N/A C:\Windows\services.exe C:\Windows\SysWOW64\NET.exe
PID 2764 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\Exporer32.exe C:\Windows\SysWOW64\cmd.exe
PID 2764 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\Exporer32.exe C:\Windows\SysWOW64\cmd.exe
PID 2764 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\Exporer32.exe C:\Windows\SysWOW64\cmd.exe
PID 2764 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\Exporer32.exe C:\Windows\SysWOW64\cmd.exe
PID 2548 wrote to memory of 3016 N/A C:\Windows\SysWOW64\NET.exe C:\Windows\SysWOW64\net1.exe
PID 2548 wrote to memory of 3016 N/A C:\Windows\SysWOW64\NET.exe C:\Windows\SysWOW64\net1.exe
PID 2548 wrote to memory of 3016 N/A C:\Windows\SysWOW64\NET.exe C:\Windows\SysWOW64\net1.exe
PID 2548 wrote to memory of 3016 N/A C:\Windows\SysWOW64\NET.exe C:\Windows\SysWOW64\net1.exe
PID 2536 wrote to memory of 2996 N/A C:\Windows\SysWOW64\NET.exe C:\Windows\SysWOW64\net1.exe
PID 2536 wrote to memory of 2996 N/A C:\Windows\SysWOW64\NET.exe C:\Windows\SysWOW64\net1.exe
PID 2536 wrote to memory of 2996 N/A C:\Windows\SysWOW64\NET.exe C:\Windows\SysWOW64\net1.exe
PID 2536 wrote to memory of 2996 N/A C:\Windows\SysWOW64\NET.exe C:\Windows\SysWOW64\net1.exe

Processes

C:\Users\Admin\AppData\Local\Temp\0492f8c8547711f75e0ab55be38474d8_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\0492f8c8547711f75e0ab55be38474d8_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\Exporer32.exe

"C:\Users\Admin\AppData\Local\Temp\Exporer32.exe"

C:\Windows\SysWOW64\fservice.exe

C:\Windows\system32\fservice.exe

C:\Windows\services.exe

C:\Windows\services.exe -XP

C:\Windows\SysWOW64\NET.exe

NET STOP srservice

C:\Windows\SysWOW64\NET.exe

NET STOP navapsvc

C:\Windows\SysWOW64\cmd.exe

cmd /c C:\Users\Admin\AppData\Local\Temp\Exporer32.exe.bat

C:\Windows\SysWOW64\net1.exe

C:\Windows\system32\net1 STOP navapsvc

C:\Windows\SysWOW64\net1.exe

C:\Windows\system32\net1 STOP srservice

Network

Country Destination Domain Proto
US 8.8.8.8:53 tcp
US 151.164.23.201:53 tcp
US 8.8.8.8:53 aku.edu.tr udp
US 8.8.8.8:53 atauni.edu.tr udp
US 8.8.8.8:53 ege.edu.tr udp
US 8.8.8.8:53 ankara.edu.tr udp
US 151.164.23.201:53 yahoo.com udp

Files

memory/2176-1-0x0000000000260000-0x0000000000354000-memory.dmp

memory/2176-0-0x0000000000360000-0x0000000000361000-memory.dmp

memory/2176-4-0x0000000000401000-0x0000000000414000-memory.dmp

\Users\Admin\AppData\Local\Temp\Exporer32.exe

MD5 2403a5c1d025497c9b65f738fae744be
SHA1 2e66befa455197f49b444697c9e8a32a72edf994
SHA256 eb26194e0129d527ff6d9bdab894af9aaa7685273bf5ba6b75064b1803a3fb06
SHA512 a0a1b14a9649799629fd61d4e45823f347a6f82d8d91ad63c3c651be2a57723bb990181bc7e473a1752397c91a1d5227d303b1345f9691a6c6709ce1b0e5383a

memory/2176-14-0x0000000005C10000-0x0000000005E0C000-memory.dmp

memory/2764-17-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2176-16-0x0000000000401000-0x0000000000414000-memory.dmp

memory/2176-15-0x0000000000400000-0x000000000052E000-memory.dmp

memory/2764-23-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2764-31-0x0000000003270000-0x000000000346C000-memory.dmp

memory/2764-30-0x0000000003270000-0x000000000346C000-memory.dmp

memory/2636-33-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2636-34-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2636-43-0x0000000003420000-0x000000000361C000-memory.dmp

memory/2656-49-0x0000000010000000-0x000000001000B000-memory.dmp

\Windows\SysWOW64\winkey.dll

MD5 b4c72da9fd1a0dcb0698b7da97daa0cd
SHA1 b25a79e8ea4c723c58caab83aed6ea48de7ed759
SHA256 45d266269634ba2de70f179a26d7224111e677e66b38dff2802851b71ce4458f
SHA512 f5f184416c5381d275bc093c9275e9fdb35c58e2c401d188aef097950013de6e43269da5d4dd5e7baea34735bd7de664d15fe487b2292fd66926c9845b0cd066

memory/2656-46-0x0000000000400000-0x00000000005FC000-memory.dmp

\Windows\SysWOW64\reginv.dll

MD5 562e0d01d6571fa2251a1e9f54c6cc69
SHA1 83677ad3bc630aa6327253c7b3deffbd4a8ce905
SHA256 c5b1d800c86d550c0b68c57c0d9911c1dd21df9e5e37e9e7bc032b5e66fdebe6
SHA512 166e132432eca24061f7e7d0c58c0b286e971ae2bc50f7c890b7707dd5dede19fcd83a5f79b6fd3f93dd691e07ad9bc1bd05fe82ccaade1610282188571585ea

C:\Users\Admin\AppData\Local\Temp\Exporer32.exe.bat

MD5 e83340ddc821c94bf7927e4c03855430
SHA1 e58d3d9aa5c582aacd499472c70f1b44b1e58237
SHA256 1f4cb7f8aba8f62f950364993929c564dd1f717fbc97f0686c8735398d4a7b1f
SHA512 34ccad0991f1bf1cb15ed21a7a4d99265bd44916780049e7c99093f40fef2a008e99799a3c770797a950ca9befc1b6f34c3520b17f53575a120acb4b612d24c8

memory/2636-65-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2764-67-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2656-71-0x0000000010000000-0x000000001000B000-memory.dmp

memory/2656-70-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2656-72-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2656-74-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2656-75-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2656-77-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2656-79-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2656-81-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2656-83-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2656-85-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2656-87-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2656-89-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2656-91-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2656-93-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2656-95-0x0000000000400000-0x00000000005FC000-memory.dmp

memory/2656-97-0x0000000000400000-0x00000000005FC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-23 00:27

Reported

2024-06-23 00:29

Platform

win10v2004-20240611-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0492f8c8547711f75e0ab55be38474d8_JaffaCakes118.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\0492f8c8547711f75e0ab55be38474d8_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\0492f8c8547711f75e0ab55be38474d8_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.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 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 52.111.227.13:443 tcp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/2748-1-0x0000000002280000-0x0000000002374000-memory.dmp

memory/2748-0-0x00000000006D0000-0x00000000006D1000-memory.dmp

memory/2748-2-0x00000000006D0000-0x00000000006D1000-memory.dmp