Malware Analysis Report

2024-10-19 10:26

Sample ID 241013-td2y9ayhjq
Target 40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118
SHA256 80107993f5db235356aa80d02a1b0111df046d6e825120dba4cab00efaee840e
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

80107993f5db235356aa80d02a1b0111df046d6e825120dba4cab00efaee840e

Threat Level: Known bad

The file 40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

isrstealer discovery stealer trojan upx

ISR Stealer

ISR Stealer payload

AutoIT Executable

Suspicious use of SetThreadContext

UPX packed file

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-13 15:57

Signatures

AutoIT Executable

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-13 15:57

Reported

2024-10-13 15:59

Platform

win7-20240708-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2420 set thread context of 2764 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2764 set thread context of 2672 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe

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

Enumerates physical storage devices

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\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\svchost.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\svchost.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2420 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2420 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2420 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2420 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2420 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2420 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2420 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2420 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2764 wrote to memory of 2672 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2764 wrote to memory of 2672 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2764 wrote to memory of 2672 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2764 wrote to memory of 2672 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2764 wrote to memory of 2672 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2764 wrote to memory of 2672 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2764 wrote to memory of 2672 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2764 wrote to memory of 2672 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 2764 wrote to memory of 2672 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Windows\SysWOW64\svchost.exe"

C:\Windows\SysWOW64\svchost.exe

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

Network

N/A

Files

memory/2764-0-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2764-7-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2764-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2764-5-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2764-2-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2672-14-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2672-15-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2672-16-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2672-12-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2672-18-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2764-19-0x0000000000400000-0x0000000000438000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-13 15:57

Reported

2024-10-13 15:59

Platform

win10v2004-20241007-en

Max time kernel

92s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2380 set thread context of 4120 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 4120 set thread context of 4352 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe

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

Enumerates physical storage devices

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\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\svchost.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\svchost.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2380 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2380 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2380 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2380 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2380 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2380 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2380 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 2380 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe C:\Windows\SysWOW64\svchost.exe
PID 4120 wrote to memory of 4352 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4120 wrote to memory of 4352 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4120 wrote to memory of 4352 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4120 wrote to memory of 4352 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4120 wrote to memory of 4352 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4120 wrote to memory of 4352 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4120 wrote to memory of 4352 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4120 wrote to memory of 4352 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\40c0f7b8cd328e3c0134bc7ace73276c_JaffaCakes118.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Windows\SysWOW64\svchost.exe"

C:\Windows\SysWOW64\svchost.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/4120-0-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4120-2-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4352-5-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4352-7-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4352-9-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4352-8-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4352-11-0x0000000000400000-0x0000000000453000-memory.dmp

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

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/4120-13-0x0000000000400000-0x0000000000438000-memory.dmp