Malware Analysis Report

2025-08-10 22:11

Sample ID 231011-ryt32ade4t
Target cfe71b8bd0a8d2dfc025eb646af5c1ffadb0e466ee4ddbec62b6ef5fa54ffad9
SHA256 cfe71b8bd0a8d2dfc025eb646af5c1ffadb0e466ee4ddbec62b6ef5fa54ffad9
Tags
formbook mh21 rat spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

cfe71b8bd0a8d2dfc025eb646af5c1ffadb0e466ee4ddbec62b6ef5fa54ffad9

Threat Level: Known bad

The file cfe71b8bd0a8d2dfc025eb646af5c1ffadb0e466ee4ddbec62b6ef5fa54ffad9 was found to be: Known bad.

Malicious Activity Summary

formbook mh21 rat spyware stealer trojan

Formbook

Formbook payload

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Suspicious behavior: MapViewOfSection

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-10-11 14:36

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-11 14:36

Reported

2023-10-12 04:05

Platform

win7-20230831-en

Max time kernel

146s

Max time network

148s

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2128 set thread context of 2224 N/A C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2224 set thread context of 1288 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe C:\Windows\Explorer.EXE

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\msiexec.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2128 wrote to memory of 2224 N/A C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2128 wrote to memory of 2224 N/A C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2128 wrote to memory of 2224 N/A C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2128 wrote to memory of 2224 N/A C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2128 wrote to memory of 2224 N/A C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2128 wrote to memory of 2224 N/A C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 2128 wrote to memory of 2224 N/A C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 1288 wrote to memory of 2476 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\msiexec.exe
PID 1288 wrote to memory of 2476 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\msiexec.exe
PID 1288 wrote to memory of 2476 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\msiexec.exe
PID 1288 wrote to memory of 2476 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\msiexec.exe
PID 1288 wrote to memory of 2476 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\msiexec.exe
PID 1288 wrote to memory of 2476 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\msiexec.exe
PID 1288 wrote to memory of 2476 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\msiexec.exe
PID 2476 wrote to memory of 2664 N/A C:\Windows\SysWOW64\msiexec.exe C:\Windows\SysWOW64\WerFault.exe
PID 2476 wrote to memory of 2664 N/A C:\Windows\SysWOW64\msiexec.exe C:\Windows\SysWOW64\WerFault.exe
PID 2476 wrote to memory of 2664 N/A C:\Windows\SysWOW64\msiexec.exe C:\Windows\SysWOW64\WerFault.exe
PID 2476 wrote to memory of 2664 N/A C:\Windows\SysWOW64\msiexec.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe

"C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe"

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

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

C:\Windows\SysWOW64\msiexec.exe

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2476 -s 272

Network

N/A

Files

memory/2128-0-0x0000000000BA0000-0x0000000000C2A000-memory.dmp

memory/2128-1-0x0000000074560000-0x0000000074C4E000-memory.dmp

memory/2128-2-0x0000000004A90000-0x0000000004AD0000-memory.dmp

memory/2128-3-0x0000000000580000-0x00000000005E0000-memory.dmp

memory/2128-4-0x00000000021D0000-0x000000000222E000-memory.dmp

memory/2128-5-0x00000000003F0000-0x000000000043E000-memory.dmp

memory/2128-6-0x0000000002230000-0x000000000227C000-memory.dmp

memory/2224-7-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2224-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2224-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2224-9-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2128-14-0x0000000074560000-0x0000000074C4E000-memory.dmp

memory/2224-15-0x0000000000810000-0x0000000000B13000-memory.dmp

memory/2224-17-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1288-19-0x0000000000210000-0x0000000000310000-memory.dmp

memory/2224-18-0x0000000000320000-0x0000000000334000-memory.dmp

memory/1288-20-0x0000000006B60000-0x0000000006C81000-memory.dmp

memory/2476-21-0x0000000000BC0000-0x0000000000BD4000-memory.dmp

memory/2476-22-0x0000000000BC0000-0x0000000000BD4000-memory.dmp

memory/2476-24-0x0000000000BC0000-0x0000000000BD4000-memory.dmp

memory/1288-26-0x0000000006B60000-0x0000000006C81000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-11 14:36

Reported

2023-10-12 04:04

Platform

win10v2004-20230915-en

Max time kernel

175s

Max time network

178s

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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A
N/A N/A C:\Windows\SysWOW64\wscript.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3200 wrote to memory of 2692 N/A C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3200 wrote to memory of 2692 N/A C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3200 wrote to memory of 2692 N/A C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3200 wrote to memory of 2692 N/A C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3200 wrote to memory of 2692 N/A C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3200 wrote to memory of 2692 N/A C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
PID 3152 wrote to memory of 3600 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wscript.exe
PID 3152 wrote to memory of 3600 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wscript.exe
PID 3152 wrote to memory of 3600 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\wscript.exe
PID 3600 wrote to memory of 3408 N/A C:\Windows\SysWOW64\wscript.exe C:\Windows\SysWOW64\cmd.exe
PID 3600 wrote to memory of 3408 N/A C:\Windows\SysWOW64\wscript.exe C:\Windows\SysWOW64\cmd.exe
PID 3600 wrote to memory of 3408 N/A C:\Windows\SysWOW64\wscript.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe

"C:\Users\Admin\AppData\Local\Temp\Dekont.pdf.exe"

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

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

C:\Windows\SysWOW64\autochk.exe

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

C:\Windows\SysWOW64\wscript.exe

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

C:\Windows\SysWOW64\cmd.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 1.208.79.178.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 29.81.57.23.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 www.smartpartproducts.com udp
US 8.8.8.8:53 www.wakuy.app udp
US 8.8.8.8:53 www.mkamiart.com udp
DE 217.160.0.161:80 www.mkamiart.com tcp
US 8.8.8.8:53 161.0.160.217.in-addr.arpa udp
US 8.8.8.8:53 2.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 www.jstzzlm.com udp
US 50.2.151.236:80 www.jstzzlm.com tcp
US 8.8.8.8:53 236.151.2.50.in-addr.arpa udp
US 8.8.8.8:53 www.naturo-construction.com udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 9.57.101.20.in-addr.arpa udp

Files

memory/3200-1-0x0000000074910000-0x00000000750C0000-memory.dmp

memory/3200-0-0x0000000000670000-0x00000000006FA000-memory.dmp

memory/3200-2-0x0000000005090000-0x00000000050A0000-memory.dmp

memory/3200-3-0x0000000004EC0000-0x0000000004F20000-memory.dmp

memory/3200-4-0x0000000004FB0000-0x000000000500E000-memory.dmp

memory/3200-5-0x0000000005010000-0x000000000505E000-memory.dmp

memory/3200-6-0x00000000050A0000-0x00000000050EC000-memory.dmp

memory/3200-7-0x00000000056F0000-0x0000000005C94000-memory.dmp

memory/2692-8-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3200-10-0x0000000074910000-0x00000000750C0000-memory.dmp

memory/2692-11-0x0000000001100000-0x000000000144A000-memory.dmp

memory/2692-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2692-14-0x0000000000C20000-0x0000000000C34000-memory.dmp

memory/3152-15-0x0000000008B10000-0x0000000008C0F000-memory.dmp

memory/2692-17-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2692-18-0x00000000010A0000-0x00000000010B4000-memory.dmp

memory/3152-19-0x0000000008EE0000-0x000000000900F000-memory.dmp

memory/3152-20-0x0000000008B10000-0x0000000008C0F000-memory.dmp

memory/3600-21-0x0000000000C50000-0x0000000000C77000-memory.dmp

memory/3600-22-0x0000000000C50000-0x0000000000C77000-memory.dmp

memory/3600-23-0x0000000000B30000-0x0000000000B5F000-memory.dmp

memory/3600-24-0x0000000002CC0000-0x000000000300A000-memory.dmp

memory/3152-25-0x0000000008EE0000-0x000000000900F000-memory.dmp

memory/3600-26-0x0000000000B30000-0x0000000000B5F000-memory.dmp

memory/3600-28-0x0000000002A00000-0x0000000002A93000-memory.dmp

memory/3152-29-0x0000000009130000-0x000000000926A000-memory.dmp

memory/3152-30-0x0000000009130000-0x000000000926A000-memory.dmp