Malware Analysis Report

2024-09-22 09:36

Sample ID 240620-ya4e5athnb
Target 09247585b1496087b0bb4753c647ae6b_JaffaCakes118
SHA256 f22c70e90cf3433d1c7705412f1c35d1c1da6d2f148f433ee5b7da3c15cb218a
Tags
cybergate mikael persistence stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

f22c70e90cf3433d1c7705412f1c35d1c1da6d2f148f433ee5b7da3c15cb218a

Threat Level: Known bad

The file 09247585b1496087b0bb4753c647ae6b_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

cybergate mikael persistence stealer trojan

CyberGate, Rebhip

Loads dropped DLL

Executes dropped EXE

Adds Run key to start application

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-20 19:35

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-20 19:35

Reported

2024-06-20 19:38

Platform

win7-20240508-en

Max time kernel

117s

Max time network

117s

Command Line

"C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe"

Signatures

CyberGate, Rebhip

trojan stealer cybergate

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\JavaUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\VKqllkpa\\TaFfRhkn\\6.4.6.8JavaUpdate.exe" C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2844 set thread context of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2844 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 2844 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 2844 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 2844 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 2844 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 2844 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 2844 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 2844 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 2844 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 2844 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 2844 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 2844 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 2844 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 2844 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 2844 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe

Processes

C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe"

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

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

Network

N/A

Files

memory/2844-0-0x00000000748A1000-0x00000000748A2000-memory.dmp

memory/2844-1-0x00000000748A0000-0x0000000074E4B000-memory.dmp

memory/2844-2-0x00000000748A0000-0x0000000074E4B000-memory.dmp

\Users\Admin\AppData\Local\Temp\Java.exe

MD5 09247585b1496087b0bb4753c647ae6b
SHA1 e88ba8c4e93146cff00deb725bd06151fbfcea36
SHA256 f22c70e90cf3433d1c7705412f1c35d1c1da6d2f148f433ee5b7da3c15cb218a
SHA512 3886ec9771d17a2d4c877514ce6b63b595f51cd84506d96bd5d718472e94ff93f30bdf3113e2bdfa3afa87eecdaaa3475137c62966908a75cde857338e0af00d

memory/2036-12-0x0000000000400000-0x000000000044D000-memory.dmp

memory/2036-20-0x0000000000400000-0x000000000044D000-memory.dmp

memory/2036-26-0x0000000000400000-0x000000000044D000-memory.dmp

memory/2036-24-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2036-22-0x0000000000400000-0x000000000044D000-memory.dmp

memory/2036-18-0x0000000000400000-0x000000000044D000-memory.dmp

memory/2036-16-0x0000000000400000-0x000000000044D000-memory.dmp

memory/2036-14-0x0000000000400000-0x000000000044D000-memory.dmp

memory/2036-10-0x0000000000400000-0x000000000044D000-memory.dmp

memory/2844-29-0x00000000748A0000-0x0000000074E4B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-20 19:35

Reported

2024-06-20 19:38

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

51s

Command Line

"C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe"

Signatures

CyberGate, Rebhip

trojan stealer cybergate

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JavaUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\VKqllkpa\\TaFfRhkn\\6.4.6.8JavaUpdate.exe" C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4492 set thread context of 4600 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\Java.exe

Suspicious use of UnmapMainImage

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4492 wrote to memory of 4600 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 4492 wrote to memory of 4600 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 4492 wrote to memory of 4600 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 4492 wrote to memory of 4600 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 4492 wrote to memory of 4600 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 4492 wrote to memory of 4600 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 4492 wrote to memory of 4600 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 4492 wrote to memory of 4600 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 4492 wrote to memory of 4600 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 4492 wrote to memory of 4600 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 4492 wrote to memory of 4600 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 4492 wrote to memory of 4600 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe
PID 4492 wrote to memory of 4600 N/A C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\Java.exe

Processes

C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\09247585b1496087b0bb4753c647ae6b_JaffaCakes118.exe"

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4600 -ip 4600

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4600 -s 12

Network

Files

memory/4492-0-0x00000000749F2000-0x00000000749F3000-memory.dmp

memory/4492-1-0x00000000749F0000-0x0000000074FA1000-memory.dmp

memory/4492-2-0x00000000749F0000-0x0000000074FA1000-memory.dmp

memory/4600-5-0x0000000000400000-0x000000000044D000-memory.dmp

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

MD5 09247585b1496087b0bb4753c647ae6b
SHA1 e88ba8c4e93146cff00deb725bd06151fbfcea36
SHA256 f22c70e90cf3433d1c7705412f1c35d1c1da6d2f148f433ee5b7da3c15cb218a
SHA512 3886ec9771d17a2d4c877514ce6b63b595f51cd84506d96bd5d718472e94ff93f30bdf3113e2bdfa3afa87eecdaaa3475137c62966908a75cde857338e0af00d

memory/4492-9-0x00000000749F0000-0x0000000074FA1000-memory.dmp