Malware Analysis Report

2025-01-22 08:47

Sample ID 241027-vq38hsxmdm
Target bb8f23c39f4b98eb90c4686efbf77cae0453f1a0a7d51dc46087f1656e0a0e03
SHA256 bb8f23c39f4b98eb90c4686efbf77cae0453f1a0a7d51dc46087f1656e0a0e03
Tags
formbook m25s 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

bb8f23c39f4b98eb90c4686efbf77cae0453f1a0a7d51dc46087f1656e0a0e03

Threat Level: Known bad

The file bb8f23c39f4b98eb90c4686efbf77cae0453f1a0a7d51dc46087f1656e0a0e03 was found to be: Known bad.

Malicious Activity Summary

formbook m25s discovery rat spyware stealer trojan

Formbook family

Formbook

Formbook payload

Deletes itself

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of UnmapMainImage

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-27 17:12

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-27 17:12

Reported

2024-10-27 17:17

Platform

win7-20241010-en

Max time kernel

149s

Max time network

120s

Command Line

C:\Windows\Explorer.EXE

Signatures

Formbook

trojan spyware stealer formbook

Formbook family

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

Deletes itself

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2712 set thread context of 2044 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 2044 set thread context of 1204 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Windows\Explorer.EXE
PID 2380 set thread context of 1204 N/A C:\Windows\SysWOW64\systray.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\Bank slip.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\systray.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\systray.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2712 wrote to memory of 2044 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 2712 wrote to memory of 2044 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 2712 wrote to memory of 2044 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 2712 wrote to memory of 2044 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 2712 wrote to memory of 2044 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 2712 wrote to memory of 2044 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 2712 wrote to memory of 2044 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 1204 wrote to memory of 2380 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\systray.exe
PID 1204 wrote to memory of 2380 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\systray.exe
PID 1204 wrote to memory of 2380 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\systray.exe
PID 1204 wrote to memory of 2380 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\systray.exe
PID 2380 wrote to memory of 2588 N/A C:\Windows\SysWOW64\systray.exe C:\Windows\SysWOW64\cmd.exe
PID 2380 wrote to memory of 2588 N/A C:\Windows\SysWOW64\systray.exe C:\Windows\SysWOW64\cmd.exe
PID 2380 wrote to memory of 2588 N/A C:\Windows\SysWOW64\systray.exe C:\Windows\SysWOW64\cmd.exe
PID 2380 wrote to memory of 2588 N/A C:\Windows\SysWOW64\systray.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\Bank slip.exe

"C:\Users\Admin\AppData\Local\Temp\Bank slip.exe"

C:\Users\Admin\AppData\Local\Temp\Bank slip.exe

"C:\Users\Admin\AppData\Local\Temp\Bank slip.exe"

C:\Windows\SysWOW64\systray.exe

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

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Users\Admin\AppData\Local\Temp\Bank slip.exe"

Network

N/A

Files

memory/2712-0-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

memory/2712-1-0x0000000000280000-0x0000000000350000-memory.dmp

memory/2712-2-0x0000000074D80000-0x000000007546E000-memory.dmp

memory/2712-3-0x0000000000620000-0x000000000063E000-memory.dmp

memory/2712-4-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

memory/2712-5-0x0000000074D80000-0x000000007546E000-memory.dmp

memory/2712-6-0x0000000000350000-0x00000000003C6000-memory.dmp

memory/2044-7-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2044-11-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2044-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2044-8-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2712-12-0x0000000074D80000-0x000000007546E000-memory.dmp

memory/2044-13-0x0000000000AD0000-0x0000000000DD3000-memory.dmp

memory/2044-16-0x0000000000170000-0x0000000000185000-memory.dmp

memory/2044-15-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1204-17-0x0000000004FF0000-0x000000000510B000-memory.dmp

memory/2380-18-0x0000000000D80000-0x0000000000D85000-memory.dmp

memory/2380-19-0x0000000000D80000-0x0000000000D85000-memory.dmp

memory/2380-20-0x00000000000C0000-0x00000000000EF000-memory.dmp

memory/1204-21-0x0000000004FF0000-0x000000000510B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-27 17:12

Reported

2024-10-27 17:15

Platform

win10v2004-20241007-en

Max time kernel

147s

Max time network

146s

Command Line

C:\Windows\Explorer.EXE

Signatures

Formbook

trojan spyware stealer formbook

Formbook family

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 980 set thread context of 1800 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 1800 set thread context of 3488 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Windows\Explorer.EXE
PID 2400 set thread context of 3488 N/A C:\Windows\SysWOW64\svchost.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\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Bank slip.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\svchost.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_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:\Users\Admin\AppData\Local\Temp\Bank slip.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.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\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\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\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\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\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\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\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\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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\svchost.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
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
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\Bank slip.exe

"C:\Users\Admin\AppData\Local\Temp\Bank slip.exe"

C:\Users\Admin\AppData\Local\Temp\Bank slip.exe

"C:\Users\Admin\AppData\Local\Temp\Bank slip.exe"

C:\Windows\SysWOW64\svchost.exe

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

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Users\Admin\AppData\Local\Temp\Bank slip.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 104.209.201.84.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 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 103.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 www.yeloma-treatment-82106.bond udp
US 8.8.8.8:53 www.23zy998jk.bond udp
US 8.8.8.8:53 105.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 www.ierra777.vip udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 www.ntercashspace24.homes 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
US 8.8.8.8:53 www.nline-shopping-56055.bond udp
US 8.8.8.8:53 www.uy-smart-tv-nl.today udp

Files

memory/980-0-0x000000007467E000-0x000000007467F000-memory.dmp

memory/980-1-0x0000000000450000-0x0000000000520000-memory.dmp

memory/980-2-0x00000000054D0000-0x0000000005A74000-memory.dmp

memory/980-3-0x0000000004F20000-0x0000000004FB2000-memory.dmp

memory/980-4-0x0000000074670000-0x0000000074E20000-memory.dmp

memory/980-5-0x0000000005EA0000-0x0000000005EAA000-memory.dmp

memory/980-6-0x00000000060C0000-0x000000000615C000-memory.dmp

memory/980-7-0x0000000005F00000-0x0000000005F1E000-memory.dmp

memory/980-8-0x000000007467E000-0x000000007467F000-memory.dmp

memory/980-9-0x0000000074670000-0x0000000074E20000-memory.dmp

memory/980-10-0x00000000048F0000-0x0000000004966000-memory.dmp

memory/1800-11-0x0000000000400000-0x000000000042F000-memory.dmp

memory/980-14-0x0000000074670000-0x0000000074E20000-memory.dmp

memory/1800-13-0x0000000001540000-0x000000000188A000-memory.dmp

memory/1800-17-0x00000000010A0000-0x00000000010B5000-memory.dmp

memory/1800-16-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3488-18-0x00000000089B0000-0x0000000008B2F000-memory.dmp

memory/2400-19-0x0000000000C10000-0x0000000000C1E000-memory.dmp

memory/2400-22-0x0000000000C10000-0x0000000000C1E000-memory.dmp

memory/2400-23-0x0000000000D70000-0x0000000000D9F000-memory.dmp

memory/3488-25-0x0000000009E20000-0x0000000009F27000-memory.dmp

memory/3488-27-0x0000000009E20000-0x0000000009F27000-memory.dmp

memory/3488-28-0x0000000009E20000-0x0000000009F27000-memory.dmp