Malware Analysis Report

2025-01-18 16:42

Sample ID 241204-zz5j6a1pbt
Target c466acccd65b0e9eda78d83f1d906def_JaffaCakes118
SHA256 cf242e41eb5aceaf698df23202a4981518edce73773a801bef74eec05032aa8e
Tags
isrstealer discovery 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

cf242e41eb5aceaf698df23202a4981518edce73773a801bef74eec05032aa8e

Threat Level: Known bad

The file c466acccd65b0e9eda78d83f1d906def_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

isrstealer discovery spyware stealer trojan upx

Isrstealer family

ISR Stealer payload

ISR Stealer

Reads user/profile data of web browsers

Suspicious use of SetThreadContext

UPX packed file

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-04 21:10

Signatures

ISR Stealer payload

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

Isrstealer family

isrstealer

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-12-04 21:10

Reported

2024-12-04 21:12

Platform

win7-20240903-en

Max time kernel

118s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe"

Signatures

ISR Stealer

trojan stealer isrstealer

Isrstealer family

isrstealer

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2420 wrote to memory of 1256 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe
PID 2420 wrote to memory of 1256 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe
PID 2420 wrote to memory of 1256 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe
PID 2420 wrote to memory of 1256 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe
PID 2420 wrote to memory of 1256 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe
PID 2420 wrote to memory of 1256 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe
PID 2420 wrote to memory of 1256 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe
PID 2420 wrote to memory of 1256 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe
PID 2420 wrote to memory of 1256 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\KgaP1uKEkR.ini"

Network

Country Destination Domain Proto
US 8.8.8.8:53 nacks.0fees.net udp
US 199.59.243.227:80 nacks.0fees.net tcp

Files

memory/1256-2-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1256-6-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1256-5-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1256-4-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1256-8-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\KgaP1uKEkR.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-04 21:10

Reported

2024-12-04 21:12

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

143s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe"

Signatures

ISR Stealer

trojan stealer isrstealer

Isrstealer family

isrstealer

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2628 wrote to memory of 1252 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe
PID 2628 wrote to memory of 1252 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe
PID 2628 wrote to memory of 1252 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe
PID 2628 wrote to memory of 1252 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe
PID 2628 wrote to memory of 1252 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe
PID 2628 wrote to memory of 1252 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe
PID 2628 wrote to memory of 1252 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe
PID 2628 wrote to memory of 1252 N/A C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\c466acccd65b0e9eda78d83f1d906def_JaffaCakes118.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\WU1do9hsXy.ini"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 182.129.81.91.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 nacks.0fees.net udp
US 199.59.243.227:80 nacks.0fees.net tcp
US 8.8.8.8:53 227.243.59.199.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/1252-4-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1252-2-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1252-6-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1252-5-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1252-8-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\WU1do9hsXy.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3