Malware Analysis Report

2024-10-19 10:27

Sample ID 240626-c342gazdke
Target 1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118
SHA256 5809a144d1acd6c9881b0c3cdf20d15628d4d0d8e56f252f7acf326bcfc921cf
Tags
isrstealer spyware stealer trojan
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

5809a144d1acd6c9881b0c3cdf20d15628d4d0d8e56f252f7acf326bcfc921cf

Threat Level: Known bad

The file 1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

isrstealer spyware stealer trojan

ISR Stealer payload

ISR Stealer

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Modifies registry class

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-26 02:37

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-26 02:37

Reported

2024-06-26 02:39

Platform

win7-20240221-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_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

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Codepage C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Charset C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1952 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe
PID 1952 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe
PID 1952 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe
PID 1952 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe
PID 1952 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe
PID 1952 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe
PID 1952 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe
PID 1952 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe
PID 1952 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 smtp.gmail.com udp
IE 209.85.202.108:465 smtp.gmail.com tcp

Files

memory/1952-0-0x0000000000400000-0x0000000000424200-memory.dmp

memory/2392-4-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1952-7-0x0000000000400000-0x0000000000424200-memory.dmp

memory/1952-3-0x00000000002E0000-0x0000000000305000-memory.dmp

memory/2392-10-0x0000000000400000-0x0000000000414000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-26 02:37

Reported

2024-06-26 02:39

Platform

win10v2004-20240508-en

Max time kernel

126s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_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

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Codepage C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000_Classes\MIME\Database C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Charset C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1532 wrote to memory of 5040 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe
PID 1532 wrote to memory of 5040 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe
PID 1532 wrote to memory of 5040 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe
PID 1532 wrote to memory of 5040 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe
PID 1532 wrote to memory of 5040 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe
PID 1532 wrote to memory of 5040 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe
PID 1532 wrote to memory of 5040 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe
PID 1532 wrote to memory of 5040 N/A C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\1071976c7372ca69ee12be54eaf5c8dc_JaffaCakes118.exe

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4612,i,16710585221322798697,8586257254049248207,262144 --variations-seed-version --mojo-platform-channel-handle=1300 /prefetch:8

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 smtp.gmail.com udp
IE 209.85.202.109:465 smtp.gmail.com tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 109.202.85.209.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 57.15.31.184.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 80.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp

Files

memory/1532-0-0x0000000000400000-0x0000000000424200-memory.dmp

memory/5040-3-0x0000000000400000-0x0000000000414000-memory.dmp

memory/5040-5-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1532-8-0x0000000000400000-0x0000000000424200-memory.dmp

memory/5040-10-0x0000000000400000-0x0000000000414000-memory.dmp