| File name: | 26032026_1229_26032026_RFQ-Q886445-Q896446.Pdf.tar |
| Full analysis: | https://app.any.run/tasks/0d7336b3-3df0-4c60-8e35-f2b23615c4f3 |
| 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: | March 26, 2026, 12:36:07 |
| OS: | Windows 10 Professional (build: 19044, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-tar |
| File info: | POSIX tar archive (GNU) |
| MD5: | EC36C3CF030BBB9724AB9AC7D3F9FEB3 |
| SHA1: | 34C3E18E5B97E9E7C45A9B205F8CDBA7F89A9C96 |
| SHA256: | 1173C042DD3B9B8277A82D65776DA4AA5B1CCF8E02C8457FE3CE58453566DF38 |
| SSDEEP: | 49152:R256pUA7/n/eEbEGRzdgcy0lq/ktw10eIG3X5otrZ5hoQd9pcLY/9HodJovVkb3B:RA6pUS/WcRzePlM21/IHtt5d9pF/9Hop |
MALICIOUS
FORMBOOK has been detected (YARA)
- AtBroker.exe (PID: 6796)
Actions looks like stealing of personal data
- AtBroker.exe (PID: 6796)
FORMBOOK has been detected (SURICATA)
- WinRAR.exe (PID: 4316)
SUSPICIOUS
Executing commands from a ".bat" file
- WinRAR.exe (PID: 4316)
Starts CMD.EXE for commands execution
- cmd.exe (PID: 5704)
Contacting a server suspected of hosting an CnC
- WinRAR.exe (PID: 4316)
INFO
Generic archive extractor
- WinRAR.exe (PID: 4316)
Reads the computer name
- RFQ-Q886445-Q896446.Pdf.scr (PID: 6064)
- MpCmdRun.exe (PID: 7544)
Checks supported languages
- RFQ-Q886445-Q896446.Pdf.scr (PID: 6064)
- RegSvcs.exe (PID: 7336)
- MpCmdRun.exe (PID: 7544)
Reads the machine GUID from the registry
- RFQ-Q886445-Q896446.Pdf.scr (PID: 6064)
Manual execution by a user
- RFQ-Q886445-Q896446.Pdf.scr (PID: 6064)
Create files in a temporary directory
- AtBroker.exe (PID: 6796)
- MpCmdRun.exe (PID: 7544)
Reads security settings of Internet Explorer
- AtBroker.exe (PID: 6796)
- WinRAR.exe (PID: 4316)
Executable content was dropped or overwritten
- WinRAR.exe (PID: 4316)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .tar | | | TAR - Tape ARchive (100) |
|---|
Total processes
142
Monitored processes
10
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2232 | C:\WINDOWS\system32\svchost.exe -k NetworkService -p -s Dnscache | C:\Windows\System32\svchost.exe | services.exe | ||||||||||||
User: NETWORK SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: Host Process for Windows Services Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2940 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 4316 | "C:\Program Files\WinRAR\WinRAR.exe" C:\Users\admin\Desktop\26032026_1229_26032026_RFQ-Q886445-Q896446.Pdf.tar | C:\Program Files\WinRAR\WinRAR.exe | explorer.exe | ||||||||||||
User: admin Company: Alexander Roshal Integrity Level: MEDIUM Description: WinRAR archiver Version: 5.91.0 Modules
| |||||||||||||||
| 5704 | C:\WINDOWS\system32\cmd.exe /c ""C:\Users\admin\AppData\Local\Temp\Rar$VR4316.27111\Rar$Scan56916.bat" " | C:\Windows\System32\cmd.exe | — | WinRAR.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5716 | "C:\Program Files\Mozilla Firefox\Firefox.exe" | C:\Program Files\Mozilla Firefox\firefox.exe | — | AtBroker.exe | |||||||||||
User: admin Company: Mozilla Corporation Integrity Level: MEDIUM Description: Firefox Exit code: 0 Version: 136.0 Modules
| |||||||||||||||
| 6064 | "C:\Users\admin\Desktop\RFQ-Q886445-Q896446.Pdf.scr" /S | C:\Users\admin\Desktop\RFQ-Q886445-Q896446.Pdf.scr | — | explorer.exe | |||||||||||
User: admin Company: beoefheo Integrity Level: MEDIUM Description: hskblfbeg Exit code: 0 Version: 13.12.11.10 Modules
| |||||||||||||||
| 6796 | "C:\Windows\SysWOW64\AtBroker.exe" | C:\Windows\SysWOW64\AtBroker.exe | WinRAR.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Assistive Technology Manager Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7336 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe | — | RFQ-Q886445-Q896446.Pdf.scr | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft .NET Services Installation Utility Exit code: 0 Version: 4.8.9037.0 built by: NET481REL1 Modules
| |||||||||||||||
| 7544 | "C:\Program Files\Windows Defender\MpCmdRun.exe" -Scan -ScanType 3 -File "C:\Users\admin\AppData\Local\Temp\Rar$VR4316.27111" | C:\Program Files\Windows Defender\MpCmdRun.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft Malware Protection Command Line Utility Exit code: 2 Version: 4.18.1909.6 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 8156 | 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
| |||||||||||||||
Total events
5 748
Read events
5 734
Write events
14
Delete events
0
Modification events
| (PID) Process: | (4316) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 3 |
Value: C:\Users\admin\Desktop\chromium_ext.zip | |||
| (PID) Process: | (4316) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 2 |
Value: C:\Users\admin\Desktop\omni_23_10_2024_.zip | |||
| (PID) Process: | (4316) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 1 |
Value: C:\Users\admin\Downloads\chromium_build 1.zip | |||
| (PID) Process: | (4316) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 0 |
Value: C:\Users\admin\Desktop\26032026_1229_26032026_RFQ-Q886445-Q896446.Pdf.tar | |||
| (PID) Process: | (4316) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | name |
Value: 120 | |||
| (PID) Process: | (4316) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | size |
Value: 80 | |||
| (PID) Process: | (4316) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | type |
Value: 120 | |||
| (PID) Process: | (4316) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | mtime |
Value: 100 | |||
| (PID) Process: | (8156) slui.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\3d\52C64B7E |
| Operation: | write | Name: | @%SystemRoot%\System32\sppcomapi.dll,-3200 |
Value: Software Licensing | |||
| (PID) Process: | (4316) WinRAR.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\3d\52C64B7E |
| Operation: | write | Name: | @shell32,-10162 |
Value: Screen saver | |||
Executable files
1
Suspicious files
1
Text files
2
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 7544 | MpCmdRun.exe | C:\Users\admin\AppData\Local\Temp\MpCmdRun.log | text | |
MD5:C1CDEB07F6EF7A4B1038105C23DF6095 | SHA256:C2C9EEA81A4147A0C052FAA04FCC5D9BDC5E647498F7DD554AFADDA73251666A | |||
| 6796 | AtBroker.exe | C:\Users\admin\AppData\Local\Temp\2890h6-s | binary | |
MD5:A45465CDCDC6CB30C8906F3DA4EC114C | SHA256:4412319EF944EBCCA9581CBACB1D4E1DC614C348D1DFC5D2FAAAAD863D300209 | |||
| 4316 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$VR4316.27111\26032026_1229_26032026_RFQ-Q886445-Q896446.Pdf.tar\RFQ-Q886445-Q896446.Pdf.scr | executable | |
MD5:AF2FE384AFCEE3BF153C3F7025195C4A | SHA256:4E0F98D5F8E2809E6A7D59BBE16FFD61B98A645F2D858225C75CB98E3288B61C | |||
| 4316 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$VR4316.27111\Rar$Scan56916.bat | text | |
MD5:FF9931EA24DD3871E5394CF04ACDFE9A | SHA256:CC67FDF4B79B0B3E3B6E922F6AA26E0F5468DC5963737B9135AB5C4999753BE4 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
81
TCP/UDP connections
70
DNS requests
25
Threats
15
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
2156 | SIHClient.exe | GET | 304 | 135.232.92.137:443 | 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 | US | — | — | whitelisted |
4212 | svchost.exe | GET | 200 | 23.52.181.212:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | US | binary | 814 b | whitelisted |
5276 | MoUsoCoreWorker.exe | GET | 200 | 23.52.181.212:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | US | binary | 814 b | whitelisted |
8156 | slui.exe | POST | 500 | 48.192.1.64:443 | https://activation-v2.sls.microsoft.com/SLActivateProduct/SLActivateProduct.asmx?configextension=Retail | US | — | 512 b | whitelisted |
5316 | svchost.exe | POST | 200 | 20.190.159.4:443 | https://login.live.com/RST2.srf | US | — | 1.24 Kb | whitelisted |
— | — | POST | 400 | 20.190.177.149:443 | https://login.live.com/ppsecure/deviceaddcredential.srf | US | text | 203 b | whitelisted |
5316 | svchost.exe | POST | 400 | 20.190.159.4:443 | https://login.live.com/ppsecure/deviceaddcredential.srf | US | — | 203 b | whitelisted |
— | — | POST | 400 | 20.190.177.149:443 | https://login.live.com/ppsecure/deviceaddcredential.srf | US | text | 203 b | whitelisted |
2156 | SIHClient.exe | GET | 200 | 74.178.240.51:443 | https://fe3cr.delivery.mp.microsoft.com/clientwebservice/ping | US | — | — | whitelisted |
5316 | svchost.exe | POST | 400 | 20.190.159.4:443 | https://login.live.com/ppsecure/deviceaddcredential.srf | US | — | 203 b | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
— | — | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
4 | System | 192.168.100.255:137 | — | Not routed | — | whitelisted |
8028 | slui.exe | 48.192.1.64:443 | activation-v2.sls.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
— | — | 184.86.251.9:443 | www.bing.com | AKAMAI-ASN1 | NL | whitelisted |
4 | System | 192.168.100.255:138 | — | Not routed | — | whitelisted |
4212 | svchost.exe | 2.16.241.12:80 | crl.microsoft.com | AKAMAI-ASN1 | NL | whitelisted |
4212 | svchost.exe | 23.52.181.212:80 | www.microsoft.com | AKAMAI-AS | US | whitelisted |
5276 | MoUsoCoreWorker.exe | 23.52.181.212:80 | www.microsoft.com | AKAMAI-AS | US | whitelisted |
4212 | svchost.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
5276 | MoUsoCoreWorker.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
activation-v2.sls.microsoft.com |
| whitelisted |
www.bing.com |
| whitelisted |
google.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
client.wns.windows.com |
| whitelisted |
login.live.com |
| whitelisted |
slscr.update.microsoft.com |
| whitelisted |
fe3cr.delivery.mp.microsoft.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
4316 | WinRAR.exe | Malware Command and Control Activity Detected | ET MALWARE FormBook CnC Checkin (GET) M5 |
4316 | WinRAR.exe | A Network Trojan was detected | STEALER [ANY.RUN] Formbook HTTP Header |
4316 | WinRAR.exe | A Network Trojan was detected | STEALER [ANY.RUN] Formbook HTTP Header |
4316 | WinRAR.exe | Malware Command and Control Activity Detected | ET MALWARE FormBook CnC Checkin (GET) M5 |
4316 | WinRAR.exe | A Network Trojan was detected | STEALER [ANY.RUN] Formbook HTTP Header |
4316 | WinRAR.exe | Malware Command and Control Activity Detected | ET MALWARE FormBook CnC Checkin (GET) M5 |
4316 | WinRAR.exe | A Network Trojan was detected | STEALER [ANY.RUN] Formbook HTTP Header |
4316 | WinRAR.exe | A Network Trojan was detected | STEALER [ANY.RUN] Formbook HTTP Header |
4316 | WinRAR.exe | Malware Command and Control Activity Detected | ET MALWARE FormBook CnC Checkin (GET) M5 |
4316 | WinRAR.exe | A Network Trojan was detected | STEALER [ANY.RUN] Formbook HTTP Header |