Malware Analysis Report

2025-01-18 12:37

Sample ID 240829-cmhhjaydjg
Target 594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730
SHA256 594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730
Tags
formbook bi05 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

594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730

Threat Level: Known bad

The file 594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730 was found to be: Known bad.

Malicious Activity Summary

formbook bi05 discovery rat spyware stealer trojan

Formbook

Formbook payload

AutoIT Executable

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of UnmapMainImage

Suspicious use of SendNotifyMessage

Suspicious behavior: MapViewOfSection

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

Modifies registry class

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-29 02:11

Signatures

AutoIT Executable

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-29 02:11

Reported

2024-08-29 02:14

Platform

win7-20240708-en

Max time kernel

148s

Max time network

149s

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2340 set thread context of 2144 N/A C:\Users\Admin\AppData\Local\Temp\594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730.exe C:\Windows\SysWOW64\svchost.exe
PID 2144 set thread context of 1268 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\Explorer.EXE
PID 2780 set thread context of 1268 N/A C:\Windows\SysWOW64\cmstp.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:\Users\Admin\AppData\Local\Temp\594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmstp.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\cmstp.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2340 wrote to memory of 2144 N/A C:\Users\Admin\AppData\Local\Temp\594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730.exe C:\Windows\SysWOW64\svchost.exe
PID 2340 wrote to memory of 2144 N/A C:\Users\Admin\AppData\Local\Temp\594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730.exe C:\Windows\SysWOW64\svchost.exe
PID 2340 wrote to memory of 2144 N/A C:\Users\Admin\AppData\Local\Temp\594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730.exe C:\Windows\SysWOW64\svchost.exe
PID 2340 wrote to memory of 2144 N/A C:\Users\Admin\AppData\Local\Temp\594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730.exe C:\Windows\SysWOW64\svchost.exe
PID 2340 wrote to memory of 2144 N/A C:\Users\Admin\AppData\Local\Temp\594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730.exe C:\Windows\SysWOW64\svchost.exe
PID 1268 wrote to memory of 2780 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\cmstp.exe
PID 1268 wrote to memory of 2780 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\cmstp.exe
PID 1268 wrote to memory of 2780 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\cmstp.exe
PID 1268 wrote to memory of 2780 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\cmstp.exe
PID 1268 wrote to memory of 2780 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\cmstp.exe
PID 1268 wrote to memory of 2780 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\cmstp.exe
PID 1268 wrote to memory of 2780 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\cmstp.exe
PID 2780 wrote to memory of 2616 N/A C:\Windows\SysWOW64\cmstp.exe C:\Windows\SysWOW64\cmd.exe
PID 2780 wrote to memory of 2616 N/A C:\Windows\SysWOW64\cmstp.exe C:\Windows\SysWOW64\cmd.exe
PID 2780 wrote to memory of 2616 N/A C:\Windows\SysWOW64\cmstp.exe C:\Windows\SysWOW64\cmd.exe
PID 2780 wrote to memory of 2616 N/A C:\Windows\SysWOW64\cmstp.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730.exe

"C:\Users\Admin\AppData\Local\Temp\594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730.exe"

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\autofmt.exe

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

C:\Windows\SysWOW64\cmstp.exe

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

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Windows\SysWOW64\svchost.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.anhit.live udp
US 8.8.8.8:53 www.7-casino-zsl.buzz udp
US 8.8.8.8:53 www.istinctcsolutions.net udp
US 8.8.8.8:53 www.sychology-degree-80838.bond udp
US 8.8.8.8:53 www.14ra567dp.autos udp

Files

memory/2340-11-0x00000000001E0000-0x00000000001E4000-memory.dmp

memory/2144-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2144-13-0x0000000000890000-0x0000000000B93000-memory.dmp

memory/2144-15-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2144-16-0x0000000000220000-0x0000000000234000-memory.dmp

memory/1268-17-0x00000000067E0000-0x00000000068CA000-memory.dmp

memory/2780-18-0x0000000000ED0000-0x0000000000EE8000-memory.dmp

memory/2780-20-0x0000000000ED0000-0x0000000000EE8000-memory.dmp

memory/2780-21-0x00000000000D0000-0x00000000000FF000-memory.dmp

memory/1268-22-0x00000000067E0000-0x00000000068CA000-memory.dmp

memory/1268-28-0x00000000041F0000-0x0000000004286000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-29 02:11

Reported

2024-08-29 02:14

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

144s

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4044 set thread context of 2640 N/A C:\Users\Admin\AppData\Local\Temp\594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730.exe C:\Windows\SysWOW64\svchost.exe
PID 2640 set thread context of 3492 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\Explorer.EXE
PID 2640 set thread context of 3492 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\Explorer.EXE
PID 4104 set thread context of 3492 N/A C:\Windows\SysWOW64\cmstp.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:\Users\Admin\AppData\Local\Temp\594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmstp.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ C:\Windows\Explorer.EXE N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ C:\Windows\Explorer.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A
N/A N/A C:\Windows\SysWOW64\cmstp.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\cmstp.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A

Suspicious use of UnmapMainImage

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

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730.exe

"C:\Users\Admin\AppData\Local\Temp\594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\594d99b2f426271d893550e00f7931e2b25ec0179e0e52887a77e3ade825b730.exe"

C:\Windows\SysWOW64\cmstp.exe

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

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Windows\SysWOW64\svchost.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 147.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 www.dn8pvdr.forum udp
US 8.8.8.8:53 www.7winvn.net udp
US 8.8.8.8:53 www.isualquotations.xyz udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa 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
US 8.8.8.8:53 www.orddserials.online udp
US 8.8.8.8:53 www.strology-forest.sbs udp
US 8.8.8.8:53 www.hyma.cyou udp

Files

memory/4044-11-0x0000000000C50000-0x0000000000C54000-memory.dmp

memory/2640-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2640-17-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3492-16-0x0000000003580000-0x0000000003636000-memory.dmp

memory/2640-15-0x0000000001AE0000-0x0000000001AF4000-memory.dmp

memory/2640-14-0x0000000001B00000-0x0000000001E4A000-memory.dmp

memory/2640-19-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2640-20-0x00000000038E0000-0x00000000038F4000-memory.dmp

memory/3492-21-0x0000000008B20000-0x0000000008C8C000-memory.dmp

memory/4104-23-0x0000000000330000-0x0000000000346000-memory.dmp

memory/4104-22-0x0000000000330000-0x0000000000346000-memory.dmp

memory/4104-24-0x0000000000B40000-0x0000000000B6F000-memory.dmp

memory/3492-25-0x0000000008B20000-0x0000000008C8C000-memory.dmp

memory/3492-28-0x0000000008C90000-0x0000000008DE7000-memory.dmp

memory/3492-30-0x0000000008C90000-0x0000000008DE7000-memory.dmp

memory/3492-31-0x0000000008C90000-0x0000000008DE7000-memory.dmp