Malware Analysis Report

2024-10-19 02:16

Sample ID 241011-jmtn5asfrg
Target Formbook.exe
SHA256 c3b9bd6a3c03e763f6255c275cbb3a068de6feef7417d18b7a3e92c6b28753e5
Tags
rat t65q xloader formbook discovery loader 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

c3b9bd6a3c03e763f6255c275cbb3a068de6feef7417d18b7a3e92c6b28753e5

Threat Level: Known bad

The file Formbook.exe was found to be: Known bad.

Malicious Activity Summary

rat t65q xloader formbook discovery loader spyware stealer trojan

Xloader family

Xloader payload

Formbook family

Xloader

Formbook

Xloader payload

Checks computer location settings

Suspicious use of SetThreadContext

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: MapViewOfSection

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-11 07:47

Signatures

Formbook family

formbook

Xloader family

xloader

Xloader payload

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-11 07:47

Reported

2024-10-11 07:50

Platform

win7-20240708-en

Max time kernel

121s

Max time network

123s

Command Line

C:\Windows\Explorer.EXE

Signatures

Formbook

trojan spyware stealer formbook

Xloader

loader xloader

Xloader 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-1-5-21-3551809350-4263495960-1443967649-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Formbook.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2432 set thread context of 1204 N/A C:\Users\Admin\AppData\Local\Temp\Formbook.exe C:\Windows\Explorer.EXE

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\msiexec.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\msiexec.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious behavior: MapViewOfSection

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Formbook.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1204 wrote to memory of 2696 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\msiexec.exe
PID 1204 wrote to memory of 2696 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\msiexec.exe
PID 1204 wrote to memory of 2696 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\msiexec.exe
PID 1204 wrote to memory of 2696 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\msiexec.exe
PID 1204 wrote to memory of 2696 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\msiexec.exe
PID 1204 wrote to memory of 2696 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\msiexec.exe
PID 1204 wrote to memory of 2696 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\msiexec.exe
PID 2696 wrote to memory of 2752 N/A C:\Windows\SysWOW64\msiexec.exe C:\Windows\SysWOW64\WerFault.exe
PID 2696 wrote to memory of 2752 N/A C:\Windows\SysWOW64\msiexec.exe C:\Windows\SysWOW64\WerFault.exe
PID 2696 wrote to memory of 2752 N/A C:\Windows\SysWOW64\msiexec.exe C:\Windows\SysWOW64\WerFault.exe
PID 2696 wrote to memory of 2752 N/A C:\Windows\SysWOW64\msiexec.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\Formbook.exe

"C:\Users\Admin\AppData\Local\Temp\Formbook.exe"

C:\Windows\SysWOW64\msiexec.exe

"C:\Windows\SysWOW64\msiexec.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2696 -s 268

Network

N/A

Files

memory/2432-0-0x0000000000840000-0x0000000000B43000-memory.dmp

memory/2432-1-0x00000000000F0000-0x00000000000F1000-memory.dmp

memory/2432-2-0x00000000000D0000-0x00000000000FD000-memory.dmp

memory/1204-3-0x0000000004C40000-0x0000000004D37000-memory.dmp

memory/2696-5-0x0000000000C60000-0x0000000000C74000-memory.dmp

memory/2696-4-0x0000000000C60000-0x0000000000C74000-memory.dmp

memory/2696-7-0x0000000000C60000-0x0000000000C74000-memory.dmp

memory/1204-10-0x0000000004C40000-0x0000000004D37000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-11 07:47

Reported

2024-10-11 07:48

Platform

win10v2004-20241007-en

Max time kernel

57s

Max time network

55s

Command Line

C:\Windows\Explorer.EXE

Signatures

Formbook

trojan spyware stealer formbook

Xloader

loader xloader

Xloader payload

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Formbook.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1672 set thread context of 3456 N/A C:\Users\Admin\AppData\Local\Temp\Formbook.exe C:\Windows\Explorer.EXE
PID 4180 set thread context of 3456 N/A C:\Windows\SysWOW64\rundll32.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\Formbook.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Formbook.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3456 wrote to memory of 4180 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\rundll32.exe
PID 3456 wrote to memory of 4180 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\rundll32.exe
PID 3456 wrote to memory of 4180 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\rundll32.exe
PID 4180 wrote to memory of 4428 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 4180 wrote to memory of 4428 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 4180 wrote to memory of 4428 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\Formbook.exe

"C:\Users\Admin\AppData\Local\Temp\Formbook.exe"

C:\Windows\SysWOW64\rundll32.exe

"C:\Windows\SysWOW64\rundll32.exe"

C:\Windows\SysWOW64\cmd.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.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 www.xmlsjmgmsnmsc.com udp
US 8.8.8.8:53 www.xusenyu.top udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 www.chisalan.com udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 www.gigiandnatemovie.com udp
US 8.8.8.8:53 www.codegibson.com udp
US 8.8.8.8:53 www.uukrkbz.xyz udp
US 8.8.8.8:53 www.promedsecurity.com udp

Files

memory/1672-0-0x00000000017B0000-0x0000000001AFA000-memory.dmp

memory/1672-2-0x0000000000E40000-0x0000000000E6D000-memory.dmp

memory/1672-1-0x0000000000E60000-0x0000000000E61000-memory.dmp

memory/3456-3-0x0000000002D90000-0x0000000002EC9000-memory.dmp

memory/4180-4-0x00000000008A0000-0x00000000008B4000-memory.dmp

memory/4180-6-0x00000000008A0000-0x00000000008B4000-memory.dmp

memory/3456-7-0x0000000002D90000-0x0000000002EC9000-memory.dmp

memory/4180-8-0x00000000012F0000-0x000000000131D000-memory.dmp

memory/3456-10-0x0000000008760000-0x0000000008846000-memory.dmp

memory/3456-11-0x0000000008760000-0x0000000008846000-memory.dmp

memory/3456-13-0x0000000008760000-0x0000000008846000-memory.dmp