Malware Analysis Report

2024-10-19 10:27

Sample ID 240405-t85zdshf93
Target d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118
SHA256 24ea81e04618ce6884bd241fa03f7dea6e8eed01d4c3e3dc2a5fd2410187b60d
Tags
isrstealer persistence spyware stealer trojan 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

24ea81e04618ce6884bd241fa03f7dea6e8eed01d4c3e3dc2a5fd2410187b60d

Threat Level: Known bad

The file d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

isrstealer persistence spyware stealer trojan upx

ISR Stealer

ISR Stealer payload

UPX packed file

Reads user/profile data of web browsers

Adds Run key to start application

Suspicious use of SetThreadContext

Program crash

Unsigned PE

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-05 16:44

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-05 16:44

Reported

2024-04-05 16:47

Platform

win7-20240319-en

Max time kernel

121s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe"

Signatures

ISR Stealer

trojan stealer isrstealer

ISR Stealer payload

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

Reads user/profile data of web browsers

spyware stealer

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\RunOnce\MvaKoAss0Vo83Wo4 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe" C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1940 wrote to memory of 3056 N/A C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1940 wrote to memory of 3056 N/A C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1940 wrote to memory of 3056 N/A C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1940 wrote to memory of 3056 N/A C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1940 wrote to memory of 3056 N/A C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1940 wrote to memory of 3056 N/A C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1940 wrote to memory of 3056 N/A C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1940 wrote to memory of 3056 N/A C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1940 wrote to memory of 3056 N/A C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1940 wrote to memory of 3056 N/A C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1940 wrote to memory of 3056 N/A C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2548 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2548 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2548 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2548 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2548 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2548 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2548 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2548 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2548 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2548 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2548 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2548 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2436 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2436 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2436 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2436 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2436 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2436 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2436 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2436 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2436 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2436 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2436 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3056 wrote to memory of 2436 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\8Gyz81Zico.ini"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\tUHBrAuZ3g.ini"

Network

Country Destination Domain Proto
US 8.8.8.8:53 planettemalade.com udp
US 160.202.84.215:80 planettemalade.com tcp
US 8.8.8.8:53 www.planettemalade.com udp
US 160.202.84.215:80 www.planettemalade.com tcp

Files

memory/3056-2-0x0000000000400000-0x0000000000442000-memory.dmp

memory/3056-0-0x0000000000400000-0x0000000000442000-memory.dmp

memory/3056-4-0x0000000000400000-0x0000000000442000-memory.dmp

memory/3056-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/3056-8-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2548-13-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2548-15-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2548-17-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2548-18-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2548-19-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2548-21-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\8Gyz81Zico.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/3056-24-0x0000000000400000-0x0000000000442000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-05 16:44

Reported

2024-04-05 16:47

Platform

win10v2004-20240226-en

Max time kernel

93s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe"

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\5iiiDDii5wYDWa3W = "C:\\Users\\Admin\\AppData\\Local\\Temp\\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe" C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4488 set thread context of 4612 N/A C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\d92a907d735a8937e7fdb7b6163f48be_JaffaCakes118.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4612 -ip 4612

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4612 -s 80

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 150.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

N/A