Malware Analysis Report

2025-01-18 12:31

Sample ID 240901-pn445szhqj
Target 28f253dd70ec114954cb9720bc2e833b.zip
SHA256 b6a9be2713b7637f854550ad474b5214e18bb760da0142e02b288510d2c6175e
Tags
formbook oy1n 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

b6a9be2713b7637f854550ad474b5214e18bb760da0142e02b288510d2c6175e

Threat Level: Known bad

The file 28f253dd70ec114954cb9720bc2e833b.zip was found to be: Known bad.

Malicious Activity Summary

formbook oy1n discovery rat spyware stealer trojan

Formbook

Formbook payload

Checks computer location settings

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Scheduled Task/Job: Scheduled Task

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-01 12:29

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-01 12:29

Reported

2024-09-01 12:32

Platform

win7-20240704-en

Max time kernel

117s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.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

Enumerates physical storage devices

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\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2072 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Windows\SysWOW64\schtasks.exe
PID 2072 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Windows\SysWOW64\schtasks.exe
PID 2072 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Windows\SysWOW64\schtasks.exe
PID 2072 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Windows\SysWOW64\schtasks.exe
PID 2072 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 2072 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 2072 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 2072 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 2072 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 2072 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 2072 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe

Processes

C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe

"C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\dVujTFoJVTvyEe" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2D09.tmp"

C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe

"C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe"

Network

N/A

Files

memory/2072-0-0x000000007435E000-0x000000007435F000-memory.dmp

memory/2072-1-0x0000000001360000-0x00000000013E8000-memory.dmp

memory/2072-2-0x0000000074350000-0x0000000074A3E000-memory.dmp

memory/2072-3-0x0000000000430000-0x000000000043E000-memory.dmp

memory/2072-4-0x000000007435E000-0x000000007435F000-memory.dmp

memory/2072-5-0x0000000074350000-0x0000000074A3E000-memory.dmp

memory/2072-6-0x0000000004D80000-0x0000000004DD8000-memory.dmp

memory/2820-16-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2820-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2820-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2820-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2072-17-0x0000000074350000-0x0000000074A3E000-memory.dmp

memory/2820-18-0x0000000000A40000-0x0000000000D43000-memory.dmp

memory/2820-19-0x0000000000A40000-0x0000000000D43000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-01 12:29

Reported

2024-09-01 12:32

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe N/A

Enumerates physical storage devices

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\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4080 wrote to memory of 4400 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Windows\SysWOW64\schtasks.exe
PID 4080 wrote to memory of 4400 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Windows\SysWOW64\schtasks.exe
PID 4080 wrote to memory of 4400 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Windows\SysWOW64\schtasks.exe
PID 4080 wrote to memory of 4000 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 4080 wrote to memory of 4000 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 4080 wrote to memory of 4000 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 4080 wrote to memory of 4000 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 4080 wrote to memory of 4000 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 4080 wrote to memory of 4000 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe

Processes

C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe

"C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\dVujTFoJVTvyEe" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF174.tmp"

C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe

"C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.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
N/A 20.189.173.28:443 tcp

Files

memory/4080-0-0x000000007457E000-0x000000007457F000-memory.dmp

memory/4080-1-0x0000000000B30000-0x0000000000BB8000-memory.dmp

memory/4080-2-0x0000000005AE0000-0x0000000006084000-memory.dmp

memory/4080-3-0x00000000055D0000-0x0000000005662000-memory.dmp

memory/4080-4-0x0000000074570000-0x0000000074D20000-memory.dmp

memory/4080-5-0x00000000055C0000-0x00000000055CA000-memory.dmp

memory/4080-6-0x0000000005AA0000-0x0000000005AAE000-memory.dmp

memory/4080-7-0x000000007457E000-0x000000007457F000-memory.dmp

memory/4080-8-0x0000000074570000-0x0000000074D20000-memory.dmp

memory/4080-9-0x00000000063B0000-0x000000000644C000-memory.dmp

memory/4080-10-0x00000000065A0000-0x00000000065F8000-memory.dmp

memory/4000-16-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4080-18-0x0000000074570000-0x0000000074D20000-memory.dmp

memory/4000-19-0x0000000001280000-0x00000000015CA000-memory.dmp