Malware Analysis Report

2025-01-18 12:36

Sample ID 240901-2jt5latelm
Target 8e3ffb0282c016ce500a81a4e7a5f13e.zip
SHA256 19437bcdb8ab50cd8ff35638dfec0a825ebc54eec82da2ad973052ee60ca5734
Tags
formbook u1bs 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

19437bcdb8ab50cd8ff35638dfec0a825ebc54eec82da2ad973052ee60ca5734

Threat Level: Known bad

The file 8e3ffb0282c016ce500a81a4e7a5f13e.zip was found to be: Known bad.

Malicious Activity Summary

formbook u1bs discovery rat spyware stealer trojan

Formbook

Formbook payload

Checks computer location settings

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Scheduled Task/Job: Scheduled Task

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-01 22:37

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-01 22:37

Reported

2024-09-01 22:39

Platform

win7-20240729-en

Max time kernel

46s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.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\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.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\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1036 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Windows\SysWOW64\schtasks.exe
PID 1036 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Windows\SysWOW64\schtasks.exe
PID 1036 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Windows\SysWOW64\schtasks.exe
PID 1036 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Windows\SysWOW64\schtasks.exe
PID 1036 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 1036 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 1036 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 1036 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 1036 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 1036 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 1036 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe

Processes

C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe

"C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FlmzgpptIOIuw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD1E0.tmp"

C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe

"C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe"

Network

N/A

Files

memory/1036-0-0x000000007442E000-0x000000007442F000-memory.dmp

memory/1036-1-0x0000000000320000-0x00000000003A4000-memory.dmp

memory/1036-2-0x0000000074420000-0x0000000074B0E000-memory.dmp

memory/1036-3-0x0000000000310000-0x000000000031E000-memory.dmp

memory/1036-4-0x000000007442E000-0x000000007442F000-memory.dmp

memory/1036-5-0x0000000074420000-0x0000000074B0E000-memory.dmp

memory/1036-6-0x0000000004A80000-0x0000000004AD8000-memory.dmp

memory/2552-16-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2552-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2552-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2552-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2552-17-0x0000000000A70000-0x0000000000D73000-memory.dmp

memory/1036-18-0x0000000074420000-0x0000000074B0E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-01 22:37

Reported

2024-09-01 22:39

Platform

win10v2004-20240802-en

Max time kernel

95s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.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\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.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 2536 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Windows\SysWOW64\schtasks.exe
PID 2536 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Windows\SysWOW64\schtasks.exe
PID 2536 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Windows\SysWOW64\schtasks.exe
PID 2536 wrote to memory of 3600 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 2536 wrote to memory of 3600 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 2536 wrote to memory of 3600 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 2536 wrote to memory of 3600 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 2536 wrote to memory of 3600 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 2536 wrote to memory of 3600 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe

Processes

C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe

"C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FlmzgpptIOIuw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEB1.tmp"

C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe

"C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 73.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/2536-0-0x0000000074B0E000-0x0000000074B0F000-memory.dmp

memory/2536-1-0x0000000000E80000-0x0000000000F04000-memory.dmp

memory/2536-2-0x0000000008300000-0x00000000088A4000-memory.dmp

memory/2536-3-0x0000000007DF0000-0x0000000007E82000-memory.dmp

memory/2536-4-0x0000000074B00000-0x00000000752B0000-memory.dmp

memory/2536-5-0x00000000032C0000-0x00000000032CA000-memory.dmp

memory/2536-6-0x00000000082A0000-0x00000000082AE000-memory.dmp

memory/2536-7-0x0000000074B0E000-0x0000000074B0F000-memory.dmp

memory/2536-8-0x0000000074B00000-0x00000000752B0000-memory.dmp

memory/2536-9-0x0000000009350000-0x00000000093EC000-memory.dmp

memory/2536-10-0x00000000093F0000-0x0000000009448000-memory.dmp

memory/3600-16-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2536-18-0x0000000074B00000-0x00000000752B0000-memory.dmp

memory/3600-19-0x0000000000F10000-0x000000000125A000-memory.dmp