Malware Analysis Report

2025-01-18 12:24

Sample ID 240829-cbvcyszcnp
Target c8076071b36a3b58eb90610200b97b38_JaffaCakes118
SHA256 679f0c6828ea6a0a111c4ffc91bbabe5a3fcd6b646ab57d5040699d1e0e0aadd
Tags
formbook m52 discovery 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

679f0c6828ea6a0a111c4ffc91bbabe5a3fcd6b646ab57d5040699d1e0e0aadd

Threat Level: Known bad

The file c8076071b36a3b58eb90610200b97b38_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

formbook m52 discovery rat spyware stealer trojan

Formbook

Formbook payload

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Enumerates system info in registry

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-29 01:54

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-29 01:54

Reported

2024-08-29 01:57

Platform

win7-20240704-en

Max time kernel

145s

Max time network

126s

Command Line

C:\Windows\Explorer.EXE

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2692 set thread context of 2736 N/A C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2736 set thread context of 1424 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe C:\Windows\Explorer.EXE
PID 2508 set thread context of 1424 N/A C:\Windows\SysWOW64\chkdsk.exe C:\Windows\Explorer.EXE

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\chkdsk.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier C:\Windows\SysWOW64\chkdsk.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\chkdsk.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2692 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2692 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2692 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2692 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2692 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2692 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2692 wrote to memory of 2736 N/A C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 1424 wrote to memory of 2508 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\chkdsk.exe
PID 1424 wrote to memory of 2508 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\chkdsk.exe
PID 1424 wrote to memory of 2508 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\chkdsk.exe
PID 1424 wrote to memory of 2508 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\chkdsk.exe
PID 2508 wrote to memory of 2540 N/A C:\Windows\SysWOW64\chkdsk.exe C:\Windows\SysWOW64\cmd.exe
PID 2508 wrote to memory of 2540 N/A C:\Windows\SysWOW64\chkdsk.exe C:\Windows\SysWOW64\cmd.exe
PID 2508 wrote to memory of 2540 N/A C:\Windows\SysWOW64\chkdsk.exe C:\Windows\SysWOW64\cmd.exe
PID 2508 wrote to memory of 2540 N/A C:\Windows\SysWOW64\chkdsk.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe

"C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"

C:\Windows\SysWOW64\chkdsk.exe

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

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"

Network

N/A

Files

memory/2692-0-0x0000000073F6E000-0x0000000073F6F000-memory.dmp

memory/2692-1-0x00000000008B0000-0x000000000095A000-memory.dmp

memory/2692-2-0x0000000073F60000-0x000000007464E000-memory.dmp

memory/2692-3-0x00000000007B0000-0x00000000007F2000-memory.dmp

memory/2692-4-0x0000000000790000-0x00000000007A4000-memory.dmp

memory/2736-6-0x0000000000400000-0x000000000042A000-memory.dmp

memory/2736-7-0x0000000000400000-0x000000000042A000-memory.dmp

memory/2736-10-0x0000000000400000-0x000000000042A000-memory.dmp

memory/2736-9-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/2692-11-0x0000000073F60000-0x000000007464E000-memory.dmp

memory/2736-12-0x0000000000730000-0x0000000000A33000-memory.dmp

memory/1424-16-0x0000000002D50000-0x0000000002E50000-memory.dmp

memory/2736-15-0x0000000000350000-0x0000000000364000-memory.dmp

memory/2736-14-0x0000000000400000-0x000000000042A000-memory.dmp

memory/1424-17-0x0000000004EC0000-0x0000000005024000-memory.dmp

memory/2508-18-0x0000000000120000-0x0000000000127000-memory.dmp

memory/2508-19-0x0000000000120000-0x0000000000127000-memory.dmp

memory/1424-20-0x0000000004EC0000-0x0000000005024000-memory.dmp

memory/1424-22-0x0000000003A40000-0x0000000003C40000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-29 01:54

Reported

2024-08-29 01:57

Platform

win10v2004-20240802-en

Max time kernel

140s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe"

Signatures

Uses the VBS compiler for execution

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\Euro40000order.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe

"C:\Users\Admin\AppData\Local\Temp\Euro40000order.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 36.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/4536-0-0x000000007450E000-0x000000007450F000-memory.dmp

memory/4536-1-0x0000000000100000-0x00000000001AA000-memory.dmp

memory/4536-2-0x0000000005250000-0x00000000057F4000-memory.dmp

memory/4536-3-0x0000000004BB0000-0x0000000004C42000-memory.dmp

memory/4536-4-0x0000000004BA0000-0x0000000004BAA000-memory.dmp

memory/4536-5-0x0000000074500000-0x0000000074CB0000-memory.dmp

memory/4536-6-0x0000000004D90000-0x0000000004DD2000-memory.dmp

memory/4536-7-0x0000000004EF0000-0x0000000004F04000-memory.dmp

memory/4536-8-0x0000000004FF0000-0x000000000508C000-memory.dmp

memory/4536-10-0x0000000074500000-0x0000000074CB0000-memory.dmp