Malware Analysis Report

2025-01-18 12:31

Sample ID 240901-eas5ls1djg
Target 8b9cb31735c70b028357402f5f9ea7748a11d3719fe0c33c1afdcf09a05295dd
SHA256 8b9cb31735c70b028357402f5f9ea7748a11d3719fe0c33c1afdcf09a05295dd
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

8b9cb31735c70b028357402f5f9ea7748a11d3719fe0c33c1afdcf09a05295dd

Threat Level: Known bad

The file 8b9cb31735c70b028357402f5f9ea7748a11d3719fe0c33c1afdcf09a05295dd was found to be: Known bad.

Malicious Activity Summary

formbook bi05 discovery rat spyware stealer trojan

Formbook

Formbook payload

AutoIT Executable

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of AdjustPrivilegeToken

Modifies registry class

Suspicious behavior: MapViewOfSection

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

Suspicious use of UnmapMainImage

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-01 03:44

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

2024-09-01 03:44

Reported

2024-09-01 03:47

Platform

win7-20240704-en

Max time kernel

148s

Max time network

152s

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 1940 set thread context of 2364 N/A C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe C:\Windows\SysWOW64\svchost.exe
PID 2364 set thread context of 1204 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\Explorer.EXE
PID 2404 set thread context of 1204 N/A C:\Windows\SysWOW64\msdt.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\msdt.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.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: 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

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\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 www.ruises-treatment-93183.bond udp
US 8.8.8.8:53 www.ata-protection-30362.bond udp
US 8.8.8.8:53 www.nherited-traits-ant.bond udp
US 8.8.8.8:53 www.hyma.cyou udp
US 8.8.8.8:53 www.lroy.sbs udp
US 8.8.8.8:53 www.udistsex.top udp

Files

memory/1940-10-0x0000000000170000-0x0000000000174000-memory.dmp

memory/2364-11-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2364-12-0x0000000000820000-0x0000000000B23000-memory.dmp

memory/2364-16-0x0000000000220000-0x0000000000234000-memory.dmp

memory/1204-15-0x0000000003EB0000-0x00000000040B0000-memory.dmp

memory/1204-17-0x0000000004D50000-0x0000000004E6A000-memory.dmp

memory/2364-14-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2404-18-0x0000000000990000-0x0000000000A84000-memory.dmp

memory/2404-19-0x0000000000990000-0x0000000000A84000-memory.dmp

memory/2404-20-0x00000000000C0000-0x00000000000EF000-memory.dmp

memory/1204-21-0x0000000004D50000-0x0000000004E6A000-memory.dmp

memory/1204-22-0x0000000000010000-0x0000000000020000-memory.dmp

memory/1204-27-0x0000000004E70000-0x0000000004FB0000-memory.dmp

memory/1204-28-0x0000000004E70000-0x0000000004FB0000-memory.dmp

memory/1204-30-0x0000000004E70000-0x0000000004FB0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-01 03:44

Reported

2024-09-01 03:47

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 4556 set thread context of 2392 N/A C:\Users\Admin\AppData\Local\Temp\EDG9502024072.exe C:\Windows\SysWOW64\svchost.exe
PID 2392 set thread context of 3508 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\Explorer.EXE
PID 648 set thread context of 3508 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:\Windows\SysWOW64\systray.exe N/A
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

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-1-5-21-656926755-4116854191-210765258-1000_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\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.exe N/A
N/A N/A C:\Windows\SysWOW64\systray.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: 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: 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: 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\systray.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: 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: 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: 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

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\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 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 www.hisismylguana.xyz udp
US 8.8.8.8:53 www.swjbcl3.top udp
US 8.8.8.8:53 81.144.22.2.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.7winvn.net udp
US 8.8.8.8:53 19.229.111.52.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 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 www.uocdiengiai.website udp
US 8.8.8.8:53 www.hnbakery.shop udp

Files

memory/4556-10-0x0000000004540000-0x0000000004544000-memory.dmp

memory/2392-11-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2392-12-0x0000000001600000-0x000000000194A000-memory.dmp

memory/3508-16-0x000000000B090000-0x000000000B1D0000-memory.dmp

memory/2392-15-0x0000000001390000-0x00000000013A4000-memory.dmp

memory/2392-14-0x0000000000400000-0x000000000042F000-memory.dmp

memory/648-18-0x00000000008D0000-0x00000000008D6000-memory.dmp

memory/648-17-0x00000000008D0000-0x00000000008D6000-memory.dmp

memory/648-19-0x0000000000620000-0x000000000064F000-memory.dmp

memory/3508-20-0x000000000B090000-0x000000000B1D0000-memory.dmp

memory/3508-24-0x0000000009320000-0x00000000093B8000-memory.dmp

memory/3508-25-0x0000000009320000-0x00000000093B8000-memory.dmp

memory/3508-27-0x0000000009320000-0x00000000093B8000-memory.dmp