Analysis
-
max time kernel
122s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
16/11/2024, 07:36
Static task
static1
Behavioral task
behavioral1
Sample
5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe
Resource
win10v2004-20241007-en
General
-
Target
5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe
-
Size
1.1MB
-
MD5
7ff7fe2c6873fe797424222a0b5870e4
-
SHA1
d6667dffbf6623ee8e6c3a081243725250d9113d
-
SHA256
5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b
-
SHA512
cc1c7bcfe8fe67d6b3664c519464751816db2fc1fff48a57be7bdadf563eaa55129687f975c234888e771052844223228c63fca4b8711a380c42021327014264
-
SSDEEP
12288:Xtb20Qc3lT7af41ePBRYuQLKpqeUhbTv5OFgNuPPpHSga0yln5XgYQ3J9a+PN2O5:Xtb20pkaCqT5TBWgNQ7a0G5X4s+wO6A
Malware Config
Signatures
-
Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Bohmerwald.vbs Bohmerwald.exe -
Executes dropped EXE 1 IoCs
pid Process 2508 Bohmerwald.exe -
Loads dropped DLL 1 IoCs
pid Process 2420 5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 4 checkip.dyndns.org -
AutoIT Executable 1 IoCs
AutoIT scripts compiled to PE executables.
resource yara_rule behavioral1/files/0x0008000000015d0d-8.dat autoit_exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2508 set thread context of 2800 2508 Bohmerwald.exe 31 -
System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Bohmerwald.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegSvcs.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 2800 RegSvcs.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 2508 Bohmerwald.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2800 RegSvcs.exe -
Suspicious use of FindShellTrayWindow 4 IoCs
pid Process 2420 5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe 2420 5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe 2508 Bohmerwald.exe 2508 Bohmerwald.exe -
Suspicious use of SendNotifyMessage 4 IoCs
pid Process 2420 5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe 2420 5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe 2508 Bohmerwald.exe 2508 Bohmerwald.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2420 wrote to memory of 2508 2420 5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe 30 PID 2420 wrote to memory of 2508 2420 5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe 30 PID 2420 wrote to memory of 2508 2420 5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe 30 PID 2420 wrote to memory of 2508 2420 5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe 30 PID 2508 wrote to memory of 2800 2508 Bohmerwald.exe 31 PID 2508 wrote to memory of 2800 2508 Bohmerwald.exe 31 PID 2508 wrote to memory of 2800 2508 Bohmerwald.exe 31 PID 2508 wrote to memory of 2800 2508 Bohmerwald.exe 31 PID 2508 wrote to memory of 2800 2508 Bohmerwald.exe 31 PID 2508 wrote to memory of 2800 2508 Bohmerwald.exe 31 PID 2508 wrote to memory of 2800 2508 Bohmerwald.exe 31 PID 2508 wrote to memory of 2800 2508 Bohmerwald.exe 31 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe"C:\Users\Admin\AppData\Local\Temp\5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2420 -
C:\Users\Admin\AppData\Local\Fonda\Bohmerwald.exe"C:\Users\Admin\AppData\Local\Temp\5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2508 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Users\Admin\AppData\Local\Temp\5f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b.exe"3⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2800
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
1.1MB
MD57ff7fe2c6873fe797424222a0b5870e4
SHA1d6667dffbf6623ee8e6c3a081243725250d9113d
SHA2565f97099c9597917ad3091e70910dc93ded0181185c1878fa4dfffaf540b46e4b
SHA512cc1c7bcfe8fe67d6b3664c519464751816db2fc1fff48a57be7bdadf563eaa55129687f975c234888e771052844223228c63fca4b8711a380c42021327014264