Malware Analysis Report

2025-01-18 12:33

Sample ID 240902-d7ykxs1hja
Target 19437bcdb8ab50cd8ff35638dfec0a825ebc54eec82da2ad973052ee60ca5734
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 19437bcdb8ab50cd8ff35638dfec0a825ebc54eec82da2ad973052ee60ca5734 was found to be: Known bad.

Malicious Activity Summary

formbook u1bs discovery rat spyware stealer trojan

Formbook

Formbook payload

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

2024-09-02 03:39

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-02 03:39

Reported

2024-09-02 03:42

Platform

win7-20240708-en

Max time kernel

121s

Max time network

122s

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 2372 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Windows\SysWOW64\schtasks.exe
PID 2372 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Windows\SysWOW64\schtasks.exe
PID 2372 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Windows\SysWOW64\schtasks.exe
PID 2372 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Windows\SysWOW64\schtasks.exe
PID 2372 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 2372 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 2372 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 2372 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 2372 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 2372 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe C:\Users\Admin\AppData\Local\Temp\370b7d8656ddabeb6669b24da32cd047ebbd977efce6047bd26e8326a98c768e.exe
PID 2372 wrote to memory of 2604 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\tmp8D13.tmp"

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

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

Network

N/A

Files

memory/2372-0-0x00000000746EE000-0x00000000746EF000-memory.dmp

memory/2372-1-0x0000000001280000-0x0000000001304000-memory.dmp

memory/2372-2-0x00000000746E0000-0x0000000074DCE000-memory.dmp

memory/2372-3-0x0000000000440000-0x000000000044E000-memory.dmp

memory/2372-4-0x00000000746EE000-0x00000000746EF000-memory.dmp

memory/2372-5-0x00000000746E0000-0x0000000074DCE000-memory.dmp

memory/2372-6-0x00000000049B0000-0x0000000004A08000-memory.dmp

memory/2604-18-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2604-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2604-14-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2604-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2604-19-0x0000000000860000-0x0000000000B63000-memory.dmp

memory/2372-20-0x00000000746E0000-0x0000000074DCE000-memory.dmp

memory/2604-21-0x0000000000860000-0x0000000000B63000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-02 03:39

Reported

2024-09-02 03:40

Platform

win10v2004-20240802-en

Max time kernel

31s

Max time network

42s

Command Line

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

Signatures

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

Processes

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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp

Files

memory/1484-0-0x000000007521E000-0x000000007521F000-memory.dmp

memory/1484-1-0x00000000005D0000-0x0000000000654000-memory.dmp

memory/1484-2-0x0000000007AB0000-0x0000000008054000-memory.dmp

memory/1484-3-0x00000000075A0000-0x0000000007632000-memory.dmp

memory/1484-4-0x0000000075210000-0x00000000759C0000-memory.dmp

memory/1484-5-0x0000000002B00000-0x0000000002B0A000-memory.dmp

memory/1484-6-0x0000000007A70000-0x0000000007A7E000-memory.dmp

memory/1484-7-0x000000007521E000-0x000000007521F000-memory.dmp

memory/1484-8-0x0000000075210000-0x00000000759C0000-memory.dmp