Malware Analysis Report

2025-01-18 12:33

Sample ID 240901-n1p1bazfqa
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: 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

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

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-01 11:52

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-01 11:52

Reported

2024-09-01 11:54

Platform

win10v2004-20240802-en

Max time kernel

139s

Max time network

124s

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-1-5-21-4182098368-2521458979-3782681353-1000\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 3288 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Windows\SysWOW64\schtasks.exe
PID 3288 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Windows\SysWOW64\schtasks.exe
PID 3288 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Windows\SysWOW64\schtasks.exe
PID 3288 wrote to memory of 4024 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 3288 wrote to memory of 4024 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 3288 wrote to memory of 4024 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 3288 wrote to memory of 4024 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 3288 wrote to memory of 4024 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 3288 wrote to memory of 4024 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\tmpE9B4.tmp"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.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 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/3288-0-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

memory/3288-1-0x0000000000BA0000-0x0000000000C28000-memory.dmp

memory/3288-2-0x00000000059B0000-0x0000000005F54000-memory.dmp

memory/3288-3-0x00000000054E0000-0x0000000005572000-memory.dmp

memory/3288-4-0x0000000074C40000-0x00000000753F0000-memory.dmp

memory/3288-5-0x0000000005690000-0x000000000569A000-memory.dmp

memory/3288-6-0x0000000005F90000-0x0000000005F9E000-memory.dmp

memory/3288-7-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

memory/3288-8-0x0000000074C40000-0x00000000753F0000-memory.dmp

memory/3288-9-0x0000000006040000-0x00000000060DC000-memory.dmp

memory/3288-10-0x0000000006290000-0x00000000062E8000-memory.dmp

memory/4024-16-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3288-18-0x0000000074C40000-0x00000000753F0000-memory.dmp

memory/4024-19-0x00000000014C0000-0x000000000180A000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-01 11:52

Reported

2024-09-01 11:54

Platform

win7-20240705-en

Max time kernel

117s

Max time network

118s

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

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 2708 wrote to memory of 3016 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Windows\SysWOW64\schtasks.exe
PID 2708 wrote to memory of 3016 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Windows\SysWOW64\schtasks.exe
PID 2708 wrote to memory of 3016 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Windows\SysWOW64\schtasks.exe
PID 2708 wrote to memory of 3016 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Windows\SysWOW64\schtasks.exe
PID 2708 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 2708 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 2708 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 2708 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 2708 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 2708 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe C:\Users\Admin\AppData\Local\Temp\51b54616de868dfaa1addcc28e0ca99f66a061de672858c2cdccafcce04aa335.exe
PID 2708 wrote to memory of 2580 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\tmp6410.tmp"

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

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

Network

N/A

Files

memory/2708-0-0x0000000073FBE000-0x0000000073FBF000-memory.dmp

memory/2708-1-0x0000000000090000-0x0000000000118000-memory.dmp

memory/2708-2-0x0000000073FB0000-0x000000007469E000-memory.dmp

memory/2708-3-0x0000000000490000-0x000000000049E000-memory.dmp

memory/2708-4-0x0000000073FBE000-0x0000000073FBF000-memory.dmp

memory/2708-5-0x0000000073FB0000-0x000000007469E000-memory.dmp

memory/2708-6-0x00000000041F0000-0x0000000004248000-memory.dmp

memory/2580-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2580-17-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2580-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2580-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2708-18-0x0000000073FB0000-0x000000007469E000-memory.dmp

memory/2580-19-0x00000000009E0000-0x0000000000CE3000-memory.dmp