Malware Analysis Report

2024-10-19 10:27

Sample ID 240627-hxsn5s1alp
Target 1518458fa7b2c49ad43b55954192de51_JaffaCakes118
SHA256 d529bbf0f6ae4ae4ebdbedeb281f1df8e03ea490e7cad6355ee0cfa79f060ff7
Tags
isrstealer 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

d529bbf0f6ae4ae4ebdbedeb281f1df8e03ea490e7cad6355ee0cfa79f060ff7

Threat Level: Known bad

The file 1518458fa7b2c49ad43b55954192de51_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

isrstealer stealer trojan upx

ISR Stealer

ISR Stealer payload

Deletes itself

Uses the VBS compiler for execution

Checks computer location settings

UPX packed file

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Runs ping.exe

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-27 07:07

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-27 07:07

Reported

2024-06-27 07:09

Platform

win7-20240611-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_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
N/A N/A N/A N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

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

Uses the VBS compiler for execution

Enumerates physical storage devices

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.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 2028 wrote to memory of 1956 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2028 wrote to memory of 1956 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2028 wrote to memory of 1956 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2028 wrote to memory of 1956 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2028 wrote to memory of 1956 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2028 wrote to memory of 1956 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2028 wrote to memory of 1956 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2028 wrote to memory of 1956 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1956 wrote to memory of 2192 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1956 wrote to memory of 2192 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1956 wrote to memory of 2192 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1956 wrote to memory of 2192 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1956 wrote to memory of 2192 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1956 wrote to memory of 2192 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1956 wrote to memory of 2192 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1956 wrote to memory of 2192 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 1956 wrote to memory of 2192 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 2028 wrote to memory of 2024 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2028 wrote to memory of 2024 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2028 wrote to memory of 2024 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2028 wrote to memory of 2024 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2024 wrote to memory of 2564 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2024 wrote to memory of 2564 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2024 wrote to memory of 2564 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2024 wrote to memory of 2564 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_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\ycBL1UjTYN.ini"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C ping 1.1.1.1 -n 1 -w 1000 > Nul & Del "C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe"

C:\Windows\SysWOW64\PING.EXE

ping 1.1.1.1 -n 1 -w 1000

Network

Country Destination Domain Proto
US 8.8.8.8:53 kppd.comli.com udp
US 153.92.0.100:80 kppd.comli.com tcp

Files

memory/2028-0-0x0000000074581000-0x0000000074582000-memory.dmp

memory/2028-1-0x0000000074580000-0x0000000074B2B000-memory.dmp

memory/2028-2-0x0000000074580000-0x0000000074B2B000-memory.dmp

memory/1956-4-0x0000000000400000-0x0000000000435000-memory.dmp

memory/1956-8-0x0000000000400000-0x0000000000435000-memory.dmp

memory/1956-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1956-3-0x0000000000400000-0x0000000000435000-memory.dmp

memory/1956-5-0x0000000000400000-0x0000000000435000-memory.dmp

memory/2192-13-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2192-15-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2192-16-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2192-17-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2192-18-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2028-19-0x0000000074580000-0x0000000074B2B000-memory.dmp

memory/2192-23-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\ycBL1UjTYN.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/1956-25-0x0000000000400000-0x0000000000435000-memory.dmp

memory/1956-28-0x0000000000400000-0x0000000000435000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-27 07:07

Reported

2024-06-27 07:09

Platform

win10v2004-20240611-en

Max time kernel

135s

Max time network

106s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_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
N/A N/A N/A N/A
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe N/A

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

Uses the VBS compiler for execution

Enumerates physical storage devices

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.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 752 wrote to memory of 3560 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 752 wrote to memory of 3560 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 752 wrote to memory of 3560 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 752 wrote to memory of 3560 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 752 wrote to memory of 3560 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 752 wrote to memory of 3560 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 752 wrote to memory of 3560 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 752 wrote to memory of 3560 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3560 wrote to memory of 3892 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3560 wrote to memory of 3892 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3560 wrote to memory of 3892 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3560 wrote to memory of 3892 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3560 wrote to memory of 3892 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3560 wrote to memory of 3892 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3560 wrote to memory of 3892 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 3560 wrote to memory of 3892 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
PID 752 wrote to memory of 4136 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 752 wrote to memory of 4136 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 752 wrote to memory of 4136 N/A C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4136 wrote to memory of 3024 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 4136 wrote to memory of 3024 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 4136 wrote to memory of 3024 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_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\snxB3mdQlf.ini"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C ping 1.1.1.1 -n 1 -w 1000 > Nul & Del "C:\Users\Admin\AppData\Local\Temp\1518458fa7b2c49ad43b55954192de51_JaffaCakes118.exe"

C:\Windows\SysWOW64\PING.EXE

ping 1.1.1.1 -n 1 -w 1000

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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
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 64.159.190.20.in-addr.arpa udp
BE 88.221.83.201:443 www.bing.com tcp
US 8.8.8.8:53 201.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 kppd.comli.com udp
US 153.92.0.100:80 kppd.comli.com tcp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/752-0-0x0000000074752000-0x0000000074753000-memory.dmp

memory/752-1-0x0000000074750000-0x0000000074D01000-memory.dmp

memory/752-2-0x0000000074750000-0x0000000074D01000-memory.dmp

memory/3560-3-0x0000000000400000-0x0000000000435000-memory.dmp

memory/3560-5-0x0000000000400000-0x0000000000435000-memory.dmp

memory/3892-10-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3560-8-0x0000000000400000-0x0000000000435000-memory.dmp

memory/3892-11-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3892-12-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3892-14-0x0000000000400000-0x0000000000453000-memory.dmp

memory/752-17-0x0000000074750000-0x0000000074D01000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\snxB3mdQlf.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/3560-19-0x0000000000400000-0x0000000000435000-memory.dmp

memory/3560-21-0x0000000000440000-0x0000000000509000-memory.dmp

memory/3560-22-0x0000000000400000-0x0000000000435000-memory.dmp