Malware Analysis Report

2025-01-18 16:36

Sample ID 241207-a4hthsspaj
Target cfdab97a39bca1372a69212c37d97113_JaffaCakes118
SHA256 f6f035624c49ffcc9f49643de0da166a4281c6003605c2e1cb1d9cca94d7acf3
Tags
isrstealer collection discovery 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

f6f035624c49ffcc9f49643de0da166a4281c6003605c2e1cb1d9cca94d7acf3

Threat Level: Known bad

The file cfdab97a39bca1372a69212c37d97113_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

isrstealer collection discovery spyware stealer upx

ISR Stealer payload

Isrstealer family

Detected Nirsoft tools

NirSoft MailPassView

Reads user/profile data of web browsers

Accesses Microsoft Outlook accounts

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

2024-12-07 00:45

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

2024-12-07 00:45

Reported

2024-12-07 00:48

Platform

win7-20240903-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe"

Signatures

Detected Nirsoft tools

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

NirSoft MailPassView

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

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_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
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
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\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1996 wrote to memory of 1916 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 1916 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 1916 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 1916 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 1916 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 1916 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 1916 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 1916 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 1916 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 2200 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 2200 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 2200 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 2200 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 2200 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 2200 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 2200 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 2200 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 1996 wrote to memory of 2200 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\ctjh37jxi6.ini"

C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\9d7pQsZGyq.ini"

Network

Country Destination Domain Proto
US 8.8.8.8:53 exs1337.host56.com udp

Files

memory/1916-4-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1916-2-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1916-5-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1916-7-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1916-6-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1916-9-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\ctjh37jxi6.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/2200-12-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2200-16-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2200-15-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2200-14-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2200-19-0x0000000000400000-0x000000000041F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-07 00:45

Reported

2024-12-07 00:48

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe"

Signatures

Detected Nirsoft tools

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

NirSoft MailPassView

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

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_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
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\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4468 wrote to memory of 2060 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 4468 wrote to memory of 2060 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 4468 wrote to memory of 2060 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 4468 wrote to memory of 2060 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 4468 wrote to memory of 2060 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 4468 wrote to memory of 2060 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 4468 wrote to memory of 2060 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 4468 wrote to memory of 2060 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 4468 wrote to memory of 3996 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 4468 wrote to memory of 3996 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 4468 wrote to memory of 3996 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 4468 wrote to memory of 3996 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 4468 wrote to memory of 3996 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 4468 wrote to memory of 3996 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 4468 wrote to memory of 3996 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe
PID 4468 wrote to memory of 3996 N/A C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\CT2bvpe14L.ini"

C:\Users\Admin\AppData\Local\Temp\cfdab97a39bca1372a69212c37d97113_JaffaCakes118.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\Bnr0jQLZA0.ini"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.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 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 exs1337.host56.com udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.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 96.36.72.23.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp

Files

memory/2060-4-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2060-5-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2060-7-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2060-6-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2060-9-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\CT2bvpe14L.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/3996-12-0x0000000000400000-0x000000000041F000-memory.dmp

memory/3996-14-0x0000000000400000-0x000000000041F000-memory.dmp

memory/3996-16-0x0000000000400000-0x000000000041F000-memory.dmp

memory/3996-15-0x0000000000400000-0x000000000041F000-memory.dmp

memory/3996-19-0x0000000000400000-0x000000000041F000-memory.dmp