Malware Analysis Report

2025-01-22 08:46

Sample ID 241027-vncmsazdje
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

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

Formbook family

Formbook payload

Deletes itself

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-27 17:07

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-27 17:07

Reported

2024-10-27 17:10

Platform

win10v2004-20241007-en

Max time kernel

145s

Max time network

150s

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 1360 set thread context of 2284 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 2284 set thread context of 3404 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Windows\Explorer.EXE
PID 5020 set thread context of 3404 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:\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
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:\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

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 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 68.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 101.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 www.ehills.shop udp
US 8.8.8.8:53 www.rimevest-global.info udp
US 8.8.8.8:53 www.imitake.xyz udp
US 8.8.8.8:53 11.227.111.52.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
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 www.ntermoney24cad.homes udp

Files

memory/1360-0-0x000000007533E000-0x000000007533F000-memory.dmp

memory/1360-1-0x00000000001C0000-0x0000000000290000-memory.dmp

memory/1360-2-0x0000000005250000-0x00000000057F4000-memory.dmp

memory/1360-3-0x0000000004CA0000-0x0000000004D32000-memory.dmp

memory/1360-4-0x0000000075330000-0x0000000075AE0000-memory.dmp

memory/1360-5-0x0000000005D10000-0x0000000005D1A000-memory.dmp

memory/1360-6-0x0000000005DC0000-0x0000000005E5C000-memory.dmp

memory/1360-7-0x0000000005F40000-0x0000000005F5E000-memory.dmp

memory/1360-8-0x000000007533E000-0x000000007533F000-memory.dmp

memory/1360-9-0x0000000075330000-0x0000000075AE0000-memory.dmp

memory/1360-10-0x0000000002500000-0x0000000002576000-memory.dmp

memory/2284-11-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1360-13-0x0000000075330000-0x0000000075AE0000-memory.dmp

memory/2284-14-0x0000000001280000-0x00000000015CA000-memory.dmp

memory/2284-17-0x00000000010A0000-0x00000000010B5000-memory.dmp

memory/2284-16-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3404-18-0x0000000008F30000-0x00000000090CB000-memory.dmp

memory/5020-19-0x0000000000F10000-0x0000000000F1E000-memory.dmp

memory/5020-21-0x0000000000F10000-0x0000000000F1E000-memory.dmp

memory/5020-22-0x00000000008E0000-0x000000000090F000-memory.dmp

memory/3404-23-0x0000000008F30000-0x00000000090CB000-memory.dmp

memory/3404-27-0x0000000009130000-0x000000000925F000-memory.dmp

memory/3404-28-0x0000000009130000-0x000000000925F000-memory.dmp

memory/3404-30-0x0000000009130000-0x000000000925F000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-27 17:07

Reported

2024-10-27 17:10

Platform

win7-20241010-en

Max time kernel

149s

Max time network

19s

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 2220 set thread context of 2872 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 2872 set thread context of 1192 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Windows\Explorer.EXE
PID 2804 set thread context of 1192 N/A C:\Windows\SysWOW64\NAPSTAT.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\NAPSTAT.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:\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\NAPSTAT.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2220 wrote to memory of 2872 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 2220 wrote to memory of 2872 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 2220 wrote to memory of 2872 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 2220 wrote to memory of 2872 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 2220 wrote to memory of 2872 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 2220 wrote to memory of 2872 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 2220 wrote to memory of 2872 N/A C:\Users\Admin\AppData\Local\Temp\Bank slip.exe C:\Users\Admin\AppData\Local\Temp\Bank slip.exe
PID 1192 wrote to memory of 2804 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\NAPSTAT.EXE
PID 1192 wrote to memory of 2804 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\NAPSTAT.EXE
PID 1192 wrote to memory of 2804 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\NAPSTAT.EXE
PID 1192 wrote to memory of 2804 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\NAPSTAT.EXE
PID 2804 wrote to memory of 2772 N/A C:\Windows\SysWOW64\NAPSTAT.EXE C:\Windows\SysWOW64\cmd.exe
PID 2804 wrote to memory of 2772 N/A C:\Windows\SysWOW64\NAPSTAT.EXE C:\Windows\SysWOW64\cmd.exe
PID 2804 wrote to memory of 2772 N/A C:\Windows\SysWOW64\NAPSTAT.EXE C:\Windows\SysWOW64\cmd.exe
PID 2804 wrote to memory of 2772 N/A C:\Windows\SysWOW64\NAPSTAT.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\NAPSTAT.EXE

"C:\Windows\SysWOW64\NAPSTAT.EXE"

C:\Windows\SysWOW64\cmd.exe

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

Network

N/A

Files

memory/2220-0-0x000000007430E000-0x000000007430F000-memory.dmp

memory/2220-1-0x0000000000EA0000-0x0000000000F70000-memory.dmp

memory/2220-2-0x0000000074300000-0x00000000749EE000-memory.dmp

memory/2220-3-0x00000000006F0000-0x000000000070E000-memory.dmp

memory/2220-4-0x000000007430E000-0x000000007430F000-memory.dmp

memory/2220-5-0x0000000074300000-0x00000000749EE000-memory.dmp

memory/2220-6-0x0000000006160000-0x00000000061D6000-memory.dmp

memory/2872-7-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2872-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2872-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2872-9-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2220-14-0x0000000074300000-0x00000000749EE000-memory.dmp

memory/2872-15-0x00000000008C0000-0x0000000000BC3000-memory.dmp

memory/2872-18-0x0000000000130000-0x0000000000145000-memory.dmp

memory/2872-17-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1192-19-0x00000000036E0000-0x00000000037E0000-memory.dmp

memory/1192-20-0x0000000004E20000-0x0000000004F17000-memory.dmp

memory/2804-23-0x0000000000810000-0x0000000000856000-memory.dmp

memory/2804-21-0x0000000000810000-0x0000000000856000-memory.dmp

memory/2804-24-0x0000000000080000-0x00000000000AF000-memory.dmp

memory/1192-25-0x0000000004E20000-0x0000000004F17000-memory.dmp

memory/1192-27-0x0000000000210000-0x0000000000310000-memory.dmp