Malware Analysis Report

2024-10-19 10:27

Sample ID 240626-1zxpzszajn
Target 13a199850a238ceff22998dd97323260_JaffaCakes118
SHA256 8c0e1f0cb5679571cf2b129c98853018823e0e7674cfc7c5973d4053dfda0578
Tags
isrstealer persistence 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

8c0e1f0cb5679571cf2b129c98853018823e0e7674cfc7c5973d4053dfda0578

Threat Level: Known bad

The file 13a199850a238ceff22998dd97323260_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

isrstealer persistence spyware stealer trojan

ISR Stealer

ISR Stealer payload

Reads data files stored by FTP clients

Executes dropped EXE

Loads dropped DLL

Reads user/profile data of web browsers

Adds Run key to start application

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Program crash

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-26 22:05

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-26 22:05

Reported

2024-06-26 22:08

Platform

win7-20240221-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\13a199850a238ceff22998dd97323260_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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\yregxj1ex6\\u9qz1x.exe" C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2864 set thread context of 2868 N/A C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2232 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\13a199850a238ceff22998dd97323260_JaffaCakes118.exe C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe
PID 2232 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\13a199850a238ceff22998dd97323260_JaffaCakes118.exe C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe
PID 2232 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\13a199850a238ceff22998dd97323260_JaffaCakes118.exe C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe
PID 2232 wrote to memory of 2864 N/A C:\Users\Admin\AppData\Local\Temp\13a199850a238ceff22998dd97323260_JaffaCakes118.exe C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe
PID 2864 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe
PID 2864 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe
PID 2864 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe
PID 2864 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe
PID 2864 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe
PID 2864 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe
PID 2864 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe
PID 2864 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe
PID 2864 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe

Processes

C:\Users\Admin\AppData\Local\Temp\13a199850a238ceff22998dd97323260_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\13a199850a238ceff22998dd97323260_JaffaCakes118.exe"

C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe

"C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe"

C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe

"C:\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 brobrobro.freeiz.com udp
US 153.92.0.100:80 brobrobro.freeiz.com tcp

Files

memory/2232-1-0x0000000000020000-0x0000000000021000-memory.dmp

\Users\Admin\AppData\Roaming\yregxj1ex6\u9qz1x.exe

MD5 13a199850a238ceff22998dd97323260
SHA1 e80c4eac7d8f04bae6b7ca7cc3f4df0d0efb0f22
SHA256 8c0e1f0cb5679571cf2b129c98853018823e0e7674cfc7c5973d4053dfda0578
SHA512 4bff87799025997a9013ce692257ac0895c518f2dd899988f6800fe245a8c40342673f949035996737aeb7eb68ba19acf163ababea4219cc8a857fc17c6d3fb8

memory/2868-11-0x0000000000400000-0x000000000041A000-memory.dmp

memory/2868-17-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2868-19-0x0000000000400000-0x000000000041A000-memory.dmp

memory/2868-20-0x0000000000400000-0x0000000000414000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-26 22:05

Reported

2024-06-26 22:08

Platform

win10v2004-20240611-en

Max time kernel

137s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\13a199850a238ceff22998dd97323260_JaffaCakes118.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\13a199850a238ceff22998dd97323260_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\13a199850a238ceff22998dd97323260_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2128 -ip 2128

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 248

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.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 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/2128-0-0x00000000001F0000-0x00000000001F1000-memory.dmp