| File name: | nouacomandapdf.exe |
| Full analysis: | https://app.any.run/tasks/2fa29c85-3786-4bd9-8c8a-e50c1927a3e6 |
| Verdict: | Malicious activity |
| Threats: | FormBook is a data stealer that is being distributed as a MaaS. FormBook differs from a lot of competing malware by its extreme ease of use that allows even the unexperienced threat actors to use FormBook virus. |
| Analysis date: | April 19, 2025, 08:25:07 |
| OS: | Windows 10 Professional (build: 19044, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows, 3 sections |
| MD5: | CECA2DFF2DDF27EE53AD866B23535B48 |
| SHA1: | D9012C547137E1C643B436A25FEAB998A3A49C52 |
| SHA256: | F3398E6A171A2DC31C171813ABA4ABA9E9D81921A65151F8C16D63DF8E638C88 |
| SSDEEP: | 24576:KLDaQzqiLsDj2w7iSKTF/vLl+OMQDXSh8eA0ArTa4Di:sDagqiLsDj2w7iSKTF/vLl+OBDCh8eAp |
MALICIOUS
Changes the login/logoff helper path in the registry
- reg.exe (PID: 8088)
- reg.exe (PID: 8128)
Create files in the Startup directory
- cmd.exe (PID: 7980)
FORMBOOK has been detected (YARA)
- skype.exe (PID: 1324)
- skype.exe (PID: 2100)
FORMBOOK has been detected
- systray.exe (PID: 7548)
- control.exe (PID: 1616)
SUSPICIOUS
Hides command output
- cmd.exe (PID: 7716)
- cmd.exe (PID: 7980)
- cmd.exe (PID: 7876)
Runs PING.EXE to delay simulation
- cmd.exe (PID: 7716)
- cmd.exe (PID: 7876)
- cmd.exe (PID: 7980)
Starts CMD.EXE for commands execution
- skype.exe (PID: 7824)
- nouacomandapdf.exe (PID: 7648)
- systray.exe (PID: 7548)
Uses REG/REGEDIT.EXE to modify registry
- cmd.exe (PID: 7716)
- cmd.exe (PID: 7876)
Executable content was dropped or overwritten
- cmd.exe (PID: 7980)
- nouacomandapdf.exe (PID: 7648)
Reads security settings of Internet Explorer
- nouacomandapdf.exe (PID: 7648)
Starts itself from another location
- nouacomandapdf.exe (PID: 7648)
The executable file from the user directory is run by the CMD process
- skype.exe (PID: 2100)
Deletes system .NET executable
- cmd.exe (PID: 7488)
INFO
Reads the computer name
- nouacomandapdf.exe (PID: 7648)
- skype.exe (PID: 7824)
- skype.exe (PID: 1324)
- skype.exe (PID: 2100)
- AddInProcess32.exe (PID: 5008)
- AddInProcess32.exe (PID: 7196)
Checks supported languages
- nouacomandapdf.exe (PID: 7648)
- skype.exe (PID: 1324)
- skype.exe (PID: 7824)
- skype.exe (PID: 2100)
- AddInProcess32.exe (PID: 5008)
- AddInProcess32.exe (PID: 7196)
Reads the machine GUID from the registry
- nouacomandapdf.exe (PID: 7648)
- skype.exe (PID: 7824)
- skype.exe (PID: 1324)
- skype.exe (PID: 2100)
Auto-launch of the file from Startup directory
- cmd.exe (PID: 7980)
Manual execution by a user
- skype.exe (PID: 1324)
- systray.exe (PID: 7548)
- autochk.exe (PID: 7560)
- control.exe (PID: 1616)
Process checks computer location settings
- nouacomandapdf.exe (PID: 7648)
Reads the software policy settings
- slui.exe (PID: 7456)
Checks proxy server information
- slui.exe (PID: 7456)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (63.1) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (23.8) |
| .dll | | | Win32 Dynamic Link Library (generic) (5.6) |
| .exe | | | Win32 Executable (generic) (3.8) |
| .exe | | | Generic Win/DOS Executable (1.7) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2024:03:17 08:47:44+00:00 |
| ImageFileCharacteristics: | Executable, Large address aware |
| PEType: | PE32 |
| LinkerVersion: | 80 |
| CodeSize: | 643072 |
| InitializedDataSize: | 26112 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x9efde |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 4.6.8.10 |
| ProductVersionNumber: | 4.6.8.10 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| Comments: | 5@26F<?GIBHD;3?IA5? |
| CompanyName: | AA=AGB5B633365H<BF |
| FileDescription: | I8E6AA<63J>45BF |
| FileVersion: | 4.6.8.10 |
| InternalName: | order pdf.exe |
| LegalCopyright: | Copyright © 1997 AA=AGB5B633365H<BF |
| OriginalFileName: | order pdf.exe |
| ProductName: | I8E6AA<63J>45BF |
| ProductVersion: | 4.6.8.10 |
| AssemblyVersion: | 1.0.0.0 |
Total processes
149
Monitored processes
24
Malicious processes
7
Suspicious processes
4
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1324 | "C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe" | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe | explorer.exe | ||||||||||||
User: admin Company: AA=AGB5B633365H<BF Integrity Level: MEDIUM Description: I8E6AA<63J>45BF Exit code: 0 Version: 4.6.8.10 Modules
| |||||||||||||||
| 1616 | "C:\Windows\SysWOW64\control.exe" | C:\Windows\SysWOW64\control.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Control Panel Exit code: 0 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2100 | "C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe" | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe | cmd.exe | ||||||||||||
User: admin Company: AA=AGB5B633365H<BF Integrity Level: MEDIUM Description: I8E6AA<63J>45BF Exit code: 0 Version: 4.6.8.10 Modules
| |||||||||||||||
| 5008 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe | — | skype.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: AddInProcess.exe Exit code: 0 Version: 4.8.9037.0 built by: NET481REL1 Modules
| |||||||||||||||
| 5800 | ping 127.0.0.1 -n 19 | C:\Windows\SysWOW64\PING.EXE | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: TCP/IP Ping Command Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7196 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe | — | skype.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: AddInProcess.exe Exit code: 0 Version: 4.8.9037.0 built by: NET481REL1 Modules
| |||||||||||||||
| 7456 | C:\WINDOWS\System32\slui.exe -Embedding | C:\Windows\System32\slui.exe | svchost.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Activation Client Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7488 | /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe" | C:\Windows\SysWOW64\cmd.exe | — | systray.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7548 | "C:\Windows\SysWOW64\systray.exe" | C:\Windows\SysWOW64\systray.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Systray .exe stub Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7560 | "C:\Windows\SysWOW64\autochk.exe" | C:\Windows\SysWOW64\autochk.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Auto Check Utility Exit code: 0 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
Total events
5 107
Read events
5 105
Write events
2
Delete events
0
Modification events
| (PID) Process: | (8088) reg.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon |
| Operation: | write | Name: | Shell |
Value: explorer.exe,C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe, | |||
| (PID) Process: | (8128) reg.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon |
| Operation: | write | Name: | Shell |
Value: explorer.exe,C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe, | |||
Executable files
2
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 7648 | nouacomandapdf.exe | C:\Users\admin\AppData\Local\Temp\skype.exe | executable | |
MD5:CECA2DFF2DDF27EE53AD866B23535B48 | SHA256:F3398E6A171A2DC31C171813ABA4ABA9E9D81921A65151F8C16D63DF8E638C88 | |||
| 7980 | cmd.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe | executable | |
MD5:CECA2DFF2DDF27EE53AD866B23535B48 | SHA256:F3398E6A171A2DC31C171813ABA4ABA9E9D81921A65151F8C16D63DF8E638C88 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
31
TCP/UDP connections
49
DNS requests
21
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
2104 | svchost.exe | GET | 200 | 23.216.77.28:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
— | — | GET | 304 | 20.109.210.53:443 | https://slscr.update.microsoft.com/SLS/%7B522D76A4-93E1-47F8-B8CE-07C937AD1A1E%7D/x64/10.0.19045.4046/0?CH=686&L=en-US&P=&PT=0x30&WUA=10.0.19041.3996&MK=DELL&MD=DELL | unknown | — | — | — |
7152 | SIHClient.exe | GET | 200 | 23.216.77.6:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut_2010-06-23.crl | unknown | — | — | whitelisted |
7152 | SIHClient.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 20.109.210.53:443 | https://slscr.update.microsoft.com/sls/ping | unknown | — | — | — |
7152 | SIHClient.exe | GET | 200 | 23.216.77.6:80 | http://crl.microsoft.com/pki/crl/products/MicTimStaPCA_2010-07-01.crl | unknown | — | — | whitelisted |
7152 | SIHClient.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Signing%20CA%202.1.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 13.95.31.18:443 | https://fe3cr.delivery.mp.microsoft.com/clientwebservice/ping | unknown | — | — | — |
7152 | SIHClient.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20Update%20Signing%20CA%202.2.crl | unknown | — | — | whitelisted |
— | — | GET | 304 | 20.109.210.53:443 | https://slscr.update.microsoft.com/SLS/%7B522D76A4-93E1-47F8-B8CE-07C937AD1A1E%7D/x64/10.0.19045.4046/0?CH=686&L=en-US&P=&PT=0x30&WUA=10.0.19041.3996&MK=DELL&MD=DELL | unknown | — | — | — |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
2104 | svchost.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
— | — | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
— | — | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
2104 | svchost.exe | 23.216.77.28:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
3216 | svchost.exe | 172.211.123.248:443 | client.wns.windows.com | MICROSOFT-CORP-MSN-AS-BLOCK | FR | whitelisted |
6544 | svchost.exe | 20.190.159.23:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
2104 | svchost.exe | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
7152 | SIHClient.exe | 20.109.210.53:443 | slscr.update.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
client.wns.windows.com |
| whitelisted |
login.live.com |
| whitelisted |
slscr.update.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
fe3cr.delivery.mp.microsoft.com |
| whitelisted |
activation-v2.sls.microsoft.com |
| whitelisted |
nexusrules.officeapps.live.com |
| whitelisted |