| File name: | uue mail.eml |
| Full analysis: | https://app.any.run/tasks/58a91047-aff4-4253-b6fe-e704c9f57a87 |
| 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 25, 2025, 07:12:42 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | message/rfc822 |
| File info: | RFC 822 mail, ASCII text, with CRLF line terminators |
| MD5: | 90FA6189329AD826D9383EF83EE59728 |
| SHA1: | A69B247F1F1CCD4F71CC612A7C0741DDDAD8C27F |
| SHA256: | 7C4A7B3CC4DB17C754C13B1F47F9B5AA59465668CC1DAD72356928487F2D239B |
| SSDEEP: | 24576:QcRMj+0BIVqMCbL2ikwdK33sVJN6SQx2omp5mxYPOB0:c+C6qKtHxswZ0 |
MALICIOUS
Generic archive extractor
- OUTLOOK.EXE (PID: 2140)
STEALER has been found (auto)
- OUTLOOK.EXE (PID: 2140)
- WinRAR.exe (PID: 6652)
- Vertragsdokument.exe (PID: 2236)
Create files in the Startup directory
- renownedness.exe (PID: 7656)
SUSPICIOUS
Reads security settings of Internet Explorer
- WinRAR.exe (PID: 6652)
- ShellExperienceHost.exe (PID: 1272)
Executable content was dropped or overwritten
- Vertragsdokument.exe (PID: 2236)
Starts itself from another location
- Vertragsdokument.exe (PID: 2236)
Executes application which crashes
- renownedness.exe (PID: 7656)
INFO
Reads security settings of Internet Explorer
- BackgroundTransferHost.exe (PID: 1072)
- BackgroundTransferHost.exe (PID: 7584)
- BackgroundTransferHost.exe (PID: 6424)
- BackgroundTransferHost.exe (PID: 1676)
- BackgroundTransferHost.exe (PID: 6640)
The sample compiled with english language support
- OUTLOOK.EXE (PID: 2140)
- WinRAR.exe (PID: 6652)
- Vertragsdokument.exe (PID: 2236)
Creates files or folders in the user directory
- BackgroundTransferHost.exe (PID: 6424)
- Vertragsdokument.exe (PID: 2236)
- renownedness.exe (PID: 7656)
- WerFault.exe (PID: 7440)
Checks proxy server information
- BackgroundTransferHost.exe (PID: 6424)
- slui.exe (PID: 7660)
Reads the software policy settings
- BackgroundTransferHost.exe (PID: 6424)
- slui.exe (PID: 7844)
- slui.exe (PID: 7660)
Executable content was dropped or overwritten
- WinRAR.exe (PID: 6652)
Reads mouse settings
- Vertragsdokument.exe (PID: 2236)
- renownedness.exe (PID: 7656)
Checks supported languages
- Vertragsdokument.exe (PID: 2236)
- renownedness.exe (PID: 7656)
- ShellExperienceHost.exe (PID: 1272)
Create files in a temporary directory
- Vertragsdokument.exe (PID: 2236)
- renownedness.exe (PID: 7656)
Reads the machine GUID from the registry
- Vertragsdokument.exe (PID: 2236)
Autorun file from Startup directory
- renownedness.exe (PID: 7656)
Reads Microsoft Office registry keys
- OpenWith.exe (PID: 8112)
Reads the computer name
- ShellExperienceHost.exe (PID: 1272)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .eml | | | E-Mail message (Var. 5) (100) |
|---|
Total processes
162
Monitored processes
17
Malicious processes
3
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1072 | "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1 | C:\Windows\System32\BackgroundTransferHost.exe | — | svchost.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Download/Upload Host Exit code: 1 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 1272 | "C:\WINDOWS\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca | C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe | — | svchost.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Shell Experience Host Version: 10.0.19041.3758 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 1676 | "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1 | C:\Windows\System32\BackgroundTransferHost.exe | — | svchost.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Download/Upload Host Exit code: 1 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2140 | "C:\Program Files\Microsoft Office\Root\Office16\OUTLOOK.EXE" /eml "C:\Users\admin\AppData\Local\Temp\uue mail.eml" | C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft Outlook Version: 16.0.16026.20146 Modules
| |||||||||||||||
| 2236 | "C:\Users\admin\AppData\Local\Temp\Rar$EXa6652.9866\Vertragsdokument.PDF\Vertragsdokument.exe" | C:\Users\admin\AppData\Local\Temp\Rar$EXa6652.9866\Vertragsdokument.PDF\Vertragsdokument.exe | WinRAR.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 6424 | "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1 | C:\Windows\System32\BackgroundTransferHost.exe | svchost.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Download/Upload Host Exit code: 1 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6640 | "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1 | C:\Windows\System32\BackgroundTransferHost.exe | — | svchost.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Download/Upload Host Exit code: 1 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6652 | "C:\Program Files\WinRAR\WinRAR.exe" "C:\Users\admin\AppData\Local\Microsoft\Windows\INetCache\Content.Outlook\4OQHT53H\Vertragsdokument.PDF.uue" | C:\Program Files\WinRAR\WinRAR.exe | OUTLOOK.EXE | ||||||||||||
User: admin Company: Alexander Roshal Integrity Level: MEDIUM Description: WinRAR archiver Version: 5.91.0 Modules
| |||||||||||||||
| 7440 | C:\WINDOWS\SysWOW64\WerFault.exe -u -p 7656 -s 752 | C:\Windows\SysWOW64\WerFault.exe | — | renownedness.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Problem Reporting Exit code: 0 Version: 10.0.19041.3996 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7584 | "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1 | C:\Windows\System32\BackgroundTransferHost.exe | — | svchost.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Download/Upload Host Exit code: 1 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
Total events
19 763
Read events
18 518
Write events
1 097
Delete events
148
Modification events
| (PID) Process: | (2140) OUTLOOK.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\Common\ClientTelemetry\Sampling |
| Operation: | write | Name: | 6 |
Value: 01941A000000001000B24E9A3E06000000000000000600000000000000 | |||
| (PID) Process: | (2140) OUTLOOK.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\Common\CrashPersistence\OUTLOOK\2140 |
| Operation: | write | Name: | 0 |
Value: 0B0E102824ED10883FC241BE5E4069D06C1973230046B6E4FA8FD5AAE7ED016A04102400449A7D64B29D01008500A907556E6B6E6F776EC906022222CA0DC2190000C91003783634C511DC10D2120B6F00750074006C006F006F006B002E00650078006500C51620C517808004C91808323231322D44656300 | |||
| (PID) Process: | (2140) OUTLOOK.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics |
| Operation: | delete value | Name: | BootCommand |
Value: | |||
| (PID) Process: | (2140) OUTLOOK.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics |
| Operation: | delete value | Name: | BootFailureCount |
Value: | |||
| (PID) Process: | (2140) OUTLOOK.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics\BootDiagnosticsDataPreviousSession |
| Operation: | delete key | Name: | (default) |
Value: | |||
| (PID) Process: | (2140) OUTLOOK.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics\BootDiagnosticsDataPreviousSession |
| Operation: | write | Name: | CantBootResolution |
Value: BootSuccess | |||
| (PID) Process: | (2140) OUTLOOK.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics\BootDiagnosticsDataPreviousSession |
| Operation: | write | Name: | ProfileBeingOpened |
Value: Outlook | |||
| (PID) Process: | (2140) OUTLOOK.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics\BootDiagnosticsDataPreviousSession |
| Operation: | write | Name: | SessionId |
Value: C3D8E96E-C1AF-4750-8D52-F4E28119C131 | |||
| (PID) Process: | (2140) OUTLOOK.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics\BootDiagnosticsDataPreviousSession |
| Operation: | write | Name: | BootDiagnosticsLogFile |
Value: C:\Users\admin\AppData\Local\Temp\Outlook Logging\OUTLOOK_16_0_16026_20146-20240718T1116060318-1644.etl | |||
| (PID) Process: | (2140) OUTLOOK.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics |
| Operation: | delete value | Name: | ProfileBeingOpened |
Value: | |||
Executable files
2
Suspicious files
20
Text files
7
Unknown types
2
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2140 | OUTLOOK.EXE | C:\Users\admin\Documents\Outlook Files\Outlook1.pst | — | |
MD5:— | SHA256:— | |||
| 6424 | BackgroundTransferHost.exe | C:\Users\admin\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\AC\BackgroundTransferApi\39b3b502-61f9-4ae6-853f-1f0a8099a740.down_data | — | |
MD5:— | SHA256:— | |||
| 2140 | OUTLOOK.EXE | C:\Users\admin\AppData\Local\Microsoft\TokenBroker\Cache\089d66ba04a8cec4bdc5267f42f39cf84278bb67.tbres | binary | |
MD5:B3F068EB11B0E8C569B614DB71543F33 | SHA256:8B6B4C0576C47336005A7E5A57CC38F2D46D952FDB4FBD09E8A1C87AC993958F | |||
| 2140 | OUTLOOK.EXE | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_CBDCCBFE4F7A916411C1E69BDD97BB04 | binary | |
MD5:0BBEDBE65D529A83D458D6526145E2AD | SHA256:F5E7FDED7887B5235D7A33796629D2A057CAED455093A0D8ADAD0E9E2B2FE3D6 | |||
| 2140 | OUTLOOK.EXE | C:\Users\admin\AppData\Local\Temp\olkBFC7.tmp | binary | |
MD5:6FDD8CC0992C084F85995A298B212C8E | SHA256:C91D1A7C5B4B35DC84762D8B9867C3887A9B1DC7D79C1E1FD676D61E8B3908EB | |||
| 2140 | OUTLOOK.EXE | C:\Users\admin\AppData\Local\Microsoft\Windows\INetCache\Content.Outlook\4OQHT53H\Vertragsdokument.PDF.uue | compressed | |
MD5:72CE537DCDD96D6018AC11E9C705C1CC | SHA256:CA4623861BAFCADD04C72DDC379C076A000787D0F740B2229941653E79BEB0E3 | |||
| 2140 | OUTLOOK.EXE | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_CBDCCBFE4F7A916411C1E69BDD97BB04 | binary | |
MD5:361F533A1CA65A2356E135F1D2CF48D4 | SHA256:D2258B3B0E8BC1924B67734C46724325033D8A71476675241F2F0D2C335B086A | |||
| 2140 | OUTLOOK.EXE | C:\Users\admin\AppData\Local\Microsoft\Outlook\RoamCache\Stream_TableViewPreviewPrefs_2_74165673C33CBE4E88AF13040420BD96.dat | xml | |
MD5:0E092DB99AEE99FDFF9B5B222C732CFD | SHA256:D1614AD99ADED9F6F5C1BE7FE7FFA5124BD04A526580DA3818EA8A954E852AA6 | |||
| 2140 | OUTLOOK.EXE | C:\Users\admin\AppData\Local\Microsoft\Office\16.0\AddInClassifierCache\OfficeSharedEntities.bin | text | |
MD5:CC90D669144261B198DEAD45AA266572 | SHA256:89C701EEFF939A44F28921FD85365ECD87041935DCD0FE0BAF04957DA12C9899 | |||
| 2140 | OUTLOOK.EXE | C:\Users\admin\AppData\Local\Microsoft\Windows\INetCache\Content.Outlook\4OQHT53H\Vertragsdokument.PDF.uue:Zone.Identifier | text | |
MD5:FBCCF14D504B7B2DBCB5A5BDA75BD93B | SHA256:EACD09517CE90D34BA562171D15AC40D302F0E691B439F91BE1B6406E25F5913 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
8
TCP/UDP connections
40
DNS requests
24
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
5496 | MoUsoCoreWorker.exe | GET | 200 | 23.216.77.42:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
7640 | backgroundTaskHost.exe | GET | 200 | 184.30.131.245:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D | unknown | — | — | whitelisted |
6544 | svchost.exe | GET | 200 | 184.30.131.245:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
2140 | OUTLOOK.EXE | GET | 200 | 184.30.131.245:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEApDqVCbATUviZV57HIIulA%3D | unknown | — | — | whitelisted |
2140 | OUTLOOK.EXE | GET | 200 | 184.30.131.245:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEA77flR%2B3w%2FxBpruV2lte6A%3D | unknown | — | — | whitelisted |
6424 | BackgroundTransferHost.exe | GET | 200 | 184.30.131.245:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | unknown | — | — | whitelisted |
7904 | SIHClient.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
7904 | SIHClient.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
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 | 192.168.100.255:138 | — | — | — | whitelisted |
— | — | 51.104.136.2:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
5496 | MoUsoCoreWorker.exe | 23.216.77.42:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
2104 | svchost.exe | 51.104.136.2:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
5496 | MoUsoCoreWorker.exe | 51.104.136.2:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
2140 | OUTLOOK.EXE | 52.123.130.14:443 | ecs.office.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
3216 | svchost.exe | 40.113.103.199:443 | client.wns.windows.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
6544 | svchost.exe | 20.190.159.2:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
6544 | svchost.exe | 184.30.131.245:80 | ocsp.digicert.com | AKAMAI-AS | US | whitelisted |
2140 | OUTLOOK.EXE | 52.109.28.47:443 | roaming.officeapps.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | GB | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
crl.microsoft.com |
| whitelisted |
ecs.office.com |
| whitelisted |
client.wns.windows.com |
| whitelisted |
login.live.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
roaming.officeapps.live.com |
| whitelisted |
omex.cdn.office.net |
| whitelisted |
messaging.lifecycle.office.com |
| whitelisted |
nleditor.osi.office.net |
| whitelisted |
odc.officeapps.live.com |
| whitelisted |