Malware Analysis Report

2025-01-18 12:25

Sample ID 240831-brj2gsxejh
Target 4bf712e760eabd92d9ddc32c20af51729630ceed38676ef496c1412fcc042d15.rar
SHA256 4bf712e760eabd92d9ddc32c20af51729630ceed38676ef496c1412fcc042d15
Tags
formbook bi05 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

4bf712e760eabd92d9ddc32c20af51729630ceed38676ef496c1412fcc042d15

Threat Level: Known bad

The file 4bf712e760eabd92d9ddc32c20af51729630ceed38676ef496c1412fcc042d15.rar was found to be: Known bad.

Malicious Activity Summary

formbook bi05 discovery rat spyware stealer trojan

Formbook

Formbook payload

Suspicious use of SetThreadContext

AutoIT Executable

Program crash

Unsigned PE

System Location Discovery: System Language Discovery

Modifies registry class

Suspicious behavior: MapViewOfSection

Suspicious use of SendNotifyMessage

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-31 01:22

Signatures

AutoIT Executable

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

2024-08-31 01:22

Reported

2024-08-31 01:25

Platform

win7-20240708-en

Max time kernel

147s

Max time network

148s

Command Line

C:\Windows\Explorer.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
N/A N/A N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2672 set thread context of 2996 N/A C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe C:\Windows\SysWOW64\svchost.exe
PID 2996 set thread context of 1324 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\Explorer.EXE
PID 2376 set thread context of 1324 N/A C:\Windows\SysWOW64\systray.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\EDG9502024072.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\systray.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\systray.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe N/A

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe

"C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe"

C:\Windows\SysWOW64\systray.exe

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

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Windows\SysWOW64\svchost.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.sychology-degree-80838.bond udp
US 8.8.8.8:53 www.14ra567dp.autos udp
US 8.8.8.8:53 www.48651301.top udp
US 8.8.8.8:53 www.swjbcl3.top udp
US 8.8.8.8:53 www.ortal-bfl.online udp
US 8.8.8.8:53 www.fx168.shop udp
HK 117.18.7.2:80 www.fx168.shop tcp

Files

memory/2672-10-0x0000000000160000-0x0000000000164000-memory.dmp

memory/2996-11-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2996-14-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2996-12-0x00000000008F0000-0x0000000000BF3000-memory.dmp

memory/2996-15-0x0000000000180000-0x0000000000194000-memory.dmp

memory/1324-16-0x0000000000010000-0x0000000000020000-memory.dmp

memory/1324-17-0x0000000004CD0000-0x0000000004D88000-memory.dmp

memory/2376-18-0x00000000002A0000-0x00000000002A5000-memory.dmp

memory/2376-20-0x00000000002A0000-0x00000000002A5000-memory.dmp

memory/2376-21-0x0000000000080000-0x00000000000AF000-memory.dmp

memory/1324-22-0x0000000004CD0000-0x0000000004D88000-memory.dmp

memory/1324-28-0x0000000006170000-0x0000000006209000-memory.dmp

memory/1324-29-0x0000000006170000-0x0000000006209000-memory.dmp

memory/1324-31-0x0000000006170000-0x0000000006209000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 01:22

Reported

2024-08-31 01:25

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

141s

Command Line

C:\Windows\Explorer.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
N/A N/A N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 5280 set thread context of 4380 N/A C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe C:\Windows\SysWOW64\svchost.exe
PID 4380 set thread context of 3568 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\Explorer.EXE
PID 3292 set thread context of 3568 N/A C:\Windows\SysWOW64\msdt.exe C:\Windows\Explorer.EXE

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\msdt.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ C:\Windows\Explorer.EXE N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ C:\Windows\Explorer.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ C:\Windows\Explorer.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A
N/A N/A C:\Windows\SysWOW64\msdt.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\msdt.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe N/A
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe N/A

Suspicious use of UnmapMainImage

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

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe

"C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5280 -ip 5280

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5280 -s 724

C:\Windows\SysWOW64\autochk.exe

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

C:\Windows\SysWOW64\msdt.exe

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

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Windows\SysWOW64\svchost.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.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 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 24.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 www.ursociotheory.xyz udp
US 8.8.8.8:53 www.7-casino-zsl.buzz udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 www.nherited-traits-ant.bond udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 www.x-scissor-lifts-glob-512.today 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
US 8.8.8.8:53 www.nnovadis.online udp
US 8.8.8.8:53 www.hyma.cyou udp

Files

memory/5280-10-0x0000000003540000-0x0000000003544000-memory.dmp

memory/4380-11-0x0000000000400000-0x000000000042F000-memory.dmp

memory/4380-12-0x0000000001800000-0x0000000001B4A000-memory.dmp

memory/4380-15-0x0000000001CB0000-0x0000000001CC4000-memory.dmp

memory/3568-16-0x0000000008E00000-0x0000000008F5E000-memory.dmp

memory/4380-14-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3292-17-0x00000000004A0000-0x00000000004F7000-memory.dmp

memory/3292-18-0x00000000004A0000-0x00000000004F7000-memory.dmp

memory/3568-19-0x0000000008E00000-0x0000000008F5E000-memory.dmp

memory/3292-20-0x0000000000420000-0x000000000044F000-memory.dmp

memory/3568-23-0x000000000B000000-0x000000000B193000-memory.dmp

memory/3568-25-0x000000000B000000-0x000000000B193000-memory.dmp

memory/3568-27-0x000000000B000000-0x000000000B193000-memory.dmp