Malware Analysis Report

2024-10-19 10:27

Sample ID 241012-vqa7qswckj
Target 3b2b355c80a79da3a42109b327c95576_JaffaCakes118
SHA256 ba05970dbe169411a8b77b2b5fb3c8572acb7447051e4a034b59f1d87127f905
Tags
isrstealer discovery 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

ba05970dbe169411a8b77b2b5fb3c8572acb7447051e4a034b59f1d87127f905

Threat Level: Known bad

The file 3b2b355c80a79da3a42109b327c95576_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

isrstealer discovery stealer trojan upx

ISR Stealer

ISR Stealer payload

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

UPX packed file

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-12 17:11

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-12 17:11

Reported

2024-10-12 17:13

Platform

win7-20240903-en

Max time kernel

147s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_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

Uses the VBS compiler for execution

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:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3004 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3004 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3004 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3004 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3004 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3004 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3004 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3004 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2536 wrote to memory of 2940 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2536 wrote to memory of 2940 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2536 wrote to memory of 2940 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2536 wrote to memory of 2940 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2536 wrote to memory of 2940 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2536 wrote to memory of 2940 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2536 wrote to memory of 2940 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2536 wrote to memory of 2940 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2536 wrote to memory of 2940 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe"

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

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

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

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

Network

N/A

Files

memory/3004-0-0x0000000074721000-0x0000000074722000-memory.dmp

memory/3004-1-0x0000000074720000-0x0000000074CCB000-memory.dmp

memory/3004-2-0x0000000074720000-0x0000000074CCB000-memory.dmp

memory/2536-4-0x0000000000400000-0x0000000000432000-memory.dmp

memory/2536-11-0x0000000000400000-0x0000000000432000-memory.dmp

memory/2536-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2536-7-0x0000000000400000-0x0000000000432000-memory.dmp

memory/2536-5-0x0000000000400000-0x0000000000432000-memory.dmp

memory/3004-14-0x0000000074720000-0x0000000074CCB000-memory.dmp

memory/2940-19-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2940-17-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2940-21-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2940-20-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2940-24-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2536-25-0x0000000000400000-0x0000000000432000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-12 17:11

Reported

2024-10-12 17:13

Platform

win10v2004-20241007-en

Max time kernel

96s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_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

Uses the VBS compiler for execution

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

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\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3472 wrote to memory of 2096 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3472 wrote to memory of 2096 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3472 wrote to memory of 2096 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3472 wrote to memory of 2096 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3472 wrote to memory of 2096 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3472 wrote to memory of 2096 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3472 wrote to memory of 2096 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3472 wrote to memory of 2096 N/A C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2096 wrote to memory of 1760 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2096 wrote to memory of 1760 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2096 wrote to memory of 1760 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2096 wrote to memory of 1760 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2096 wrote to memory of 1760 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2096 wrote to memory of 1760 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2096 wrote to memory of 1760 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2096 wrote to memory of 1760 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\3b2b355c80a79da3a42109b327c95576_JaffaCakes118.exe"

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

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

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.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 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp

Files

memory/3472-0-0x0000000074A32000-0x0000000074A33000-memory.dmp

memory/3472-1-0x0000000074A30000-0x0000000074FE1000-memory.dmp

memory/3472-2-0x0000000074A30000-0x0000000074FE1000-memory.dmp

memory/2096-3-0x0000000000400000-0x0000000000432000-memory.dmp

memory/2096-6-0x0000000000400000-0x0000000000432000-memory.dmp

memory/1760-10-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1760-13-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1760-15-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1760-14-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1760-19-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1760-12-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3472-9-0x0000000074A30000-0x0000000074FE1000-memory.dmp

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

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/2096-21-0x0000000000440000-0x0000000000509000-memory.dmp

memory/2096-23-0x0000000000400000-0x0000000000432000-memory.dmp