Malware Analysis Report

2025-01-18 12:38

Sample ID 240404-myyzrsde29
Target b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118
SHA256 ec427d5a521cdc4f2690ac7ffa883c982c4e3008991127998b0cfdf32f240f30
Tags
formbook o4ms rat 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

ec427d5a521cdc4f2690ac7ffa883c982c4e3008991127998b0cfdf32f240f30

Threat Level: Known bad

The file b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

formbook o4ms rat spyware stealer trojan

Formbook

Formbook payload

Checks computer location settings

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Creates scheduled task(s)

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-04 10:53

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-04 10:53

Reported

2024-04-04 10:55

Platform

win7-20240221-en

Max time kernel

119s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Enumerates physical storage devices

Creates scheduled task(s)

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2120 wrote to memory of 2500 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2120 wrote to memory of 2500 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2120 wrote to memory of 2500 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2120 wrote to memory of 2500 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2120 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 2120 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 2120 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 2120 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 2120 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 2120 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 2120 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 2120 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 2120 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 2120 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 2120 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ELqDlkdxF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD0F5.tmp"

C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe"

Network

N/A

Files

memory/2120-0-0x00000000011E0000-0x000000000127A000-memory.dmp

memory/2120-1-0x0000000074110000-0x00000000747FE000-memory.dmp

memory/2120-2-0x0000000004D20000-0x0000000004D60000-memory.dmp

memory/2120-3-0x0000000000780000-0x000000000078A000-memory.dmp

memory/2120-4-0x0000000074110000-0x00000000747FE000-memory.dmp

memory/2120-5-0x0000000004D20000-0x0000000004D60000-memory.dmp

memory/2120-6-0x0000000004D60000-0x0000000004DDA000-memory.dmp

memory/2536-14-0x0000000000400000-0x000000000042E000-memory.dmp

memory/2536-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2536-12-0x0000000000400000-0x000000000042E000-memory.dmp

memory/2536-18-0x0000000000400000-0x000000000042E000-memory.dmp

memory/2120-19-0x0000000074110000-0x00000000747FE000-memory.dmp

memory/2536-20-0x0000000000810000-0x0000000000B13000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-04 10:53

Reported

2024-04-04 10:55

Platform

win10v2004-20240226-en

Max time kernel

93s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 732 wrote to memory of 3244 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 732 wrote to memory of 3244 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 732 wrote to memory of 3244 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 732 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 732 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 732 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 732 wrote to memory of 1452 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 732 wrote to memory of 1452 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 732 wrote to memory of 1452 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 732 wrote to memory of 1548 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 732 wrote to memory of 1548 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 732 wrote to memory of 1548 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 732 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 732 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 732 wrote to memory of 1612 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 732 wrote to memory of 4920 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 732 wrote to memory of 4920 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe
PID 732 wrote to memory of 4920 N/A C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ELqDlkdxF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEAFC.tmp"

C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b670879d45e75eb7f88fe047f9e88e5f_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 249.110.86.104.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 24.66.18.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 98.56.20.217.in-addr.arpa udp

Files

memory/732-0-0x0000000000880000-0x000000000091A000-memory.dmp

memory/732-1-0x00000000744F0000-0x0000000074CA0000-memory.dmp

memory/732-2-0x00000000059B0000-0x0000000005F54000-memory.dmp

memory/732-3-0x00000000052F0000-0x0000000005382000-memory.dmp

memory/732-4-0x00000000055A0000-0x00000000055B0000-memory.dmp

memory/732-5-0x00000000052D0000-0x00000000052DA000-memory.dmp

memory/732-6-0x0000000005580000-0x000000000558A000-memory.dmp

memory/732-7-0x00000000744F0000-0x0000000074CA0000-memory.dmp

memory/732-8-0x00000000055A0000-0x00000000055B0000-memory.dmp

memory/732-9-0x0000000006920000-0x00000000069BC000-memory.dmp

memory/732-10-0x0000000006AB0000-0x0000000006B2A000-memory.dmp

memory/732-17-0x00000000744F0000-0x0000000074CA0000-memory.dmp