Malware Analysis Report

2024-10-19 10:27

Sample ID 240416-rn2ecsdg3w
Target f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118
SHA256 02d752e92511281d36c2bb136ffd89ac0107949194871056080db4f223cf7a13
Tags
isrstealer spyware stealer 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

02d752e92511281d36c2bb136ffd89ac0107949194871056080db4f223cf7a13

Threat Level: Known bad

The file f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

isrstealer spyware stealer upx

ISR Stealer payload

Isrstealer family

Reads user/profile data of web browsers

UPX packed file

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-16 14:21

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

2024-04-16 14:21

Reported

2024-04-16 14:23

Platform

win7-20240221-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe"

Signatures

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

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2056 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe
PID 2056 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe
PID 2056 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe
PID 2056 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe
PID 2056 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe
PID 2056 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe
PID 2056 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe
PID 2056 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe
PID 2056 wrote to memory of 1676 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe

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

Network

N/A

Files

memory/1676-2-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1676-4-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1676-5-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1676-6-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1676-8-0x0000000000400000-0x0000000000453000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-16 14:21

Reported

2024-04-16 14:23

Platform

win10v2004-20240412-en

Max time kernel

94s

Max time network

117s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe"

Signatures

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

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1808 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe
PID 1808 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe
PID 1808 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe
PID 1808 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe
PID 1808 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe
PID 1808 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe
PID 1808 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe
PID 1808 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\f3abcc954b5df6aab6332a634852d7d0_JaffaCakes118.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/2880-2-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2880-4-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2880-5-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2880-6-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2880-8-0x0000000000400000-0x0000000000453000-memory.dmp

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

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3