| File name: | 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif |
| Full analysis: | https://app.any.run/tasks/08de0734-1b3a-48d5-8426-a64f3d3bd2de |
| Verdict: | Malicious activity |
| Threats: | A backdoor is a type of cybersecurity threat that allows attackers to secretly compromise a system and conduct malicious activities, such as stealing data and modifying files. Backdoors can be difficult to detect, as they often use legitimate system applications to evade defense mechanisms. Threat actors often utilize special malware, such as PlugX, to establish backdoors on target devices. |
| Analysis date: | March 24, 2025, 13:36:07 |
| OS: | Windows 10 Professional (build: 19044, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows, 5 sections |
| MD5: | C4C1D1E5B940B44EB509A1682E803C40 |
| SHA1: | 523D8516FC7BAF72987CEA3E488B06781959DA3C |
| SHA256: | 844511F640A1AB3498F42E06539169FADF0C7BC3828A9FC903F224DE837A763A |
| SSDEEP: | 98304:iJquOYGsg9aLF2Nv5SQ6i0A5vxlYX2aiE5y:BV |
MALICIOUS
Executing a file with an untrusted certificate
- 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe (PID: 7744)
FLOXIF mutex has been found
- 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe (PID: 7744)
Connects to the CnC server
- 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe (PID: 7744)
SUSPICIOUS
Executable content was dropped or overwritten
- 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe (PID: 7744)
Process drops legitimate windows executable
- 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe (PID: 7744)
Contacting a server suspected of hosting an CnC
- 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe (PID: 7744)
There is functionality for taking screenshot (YARA)
- 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe (PID: 7744)
Reads security settings of Internet Explorer
- 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe (PID: 7744)
INFO
The sample compiled with english language support
- 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe (PID: 7744)
Failed to create an executable file in Windows directory
- 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe (PID: 7744)
Reads the computer name
- 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe (PID: 7744)
Checks proxy server information
- 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe (PID: 7744)
Checks supported languages
- 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe (PID: 7744)
Create files in a temporary directory
- 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe (PID: 7744)
Creates files or folders in the user directory
- BackgroundTransferHost.exe (PID: 7672)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win64 Executable (generic) (64.6) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (15.4) |
| .exe | | | Win32 Executable (generic) (10.5) |
| .exe | | | Generic Win/DOS Executable (4.6) |
| .exe | | | DOS Executable Generic (4.6) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2015:04:09 07:25:45+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 12 |
| CodeSize: | 1402368 |
| InitializedDataSize: | 563712 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x1263ac |
| OSVersion: | 5.1 |
| ImageVersion: | - |
| SubsystemVersion: | 5.1 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 35.0.61.54677 |
| ProductVersionNumber: | 35.0.61.54677 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Windows 32-bit |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Windows, Latin1 |
| Comments: | USBSetupLauncher.exe |
| OriginalFileName: | USBSetupLauncher.exe |
| InternalName: | USBSetupLauncher |
| CompanyName: | Hewlett-Packard Development Company, LP |
| LegalCopyright: | Copyright (C) Hewlett-Packard Co. 2014 |
| LegalTrademarks: | - |
| FileDescription: | USBSetupLauncher.exe |
| FileVersion: | 35.0.61.54677 |
| ProductName: | HP Digital Imaging |
| ProductVersion: | 035.000.061.54677 |
| ProductFamily: | HP Digital Imaging |
| ProductFileFlags: | 1 |
Total processes
142
Monitored processes
7
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1388 | "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
| |||||||||||||||
| 4696 | "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
| |||||||||||||||
| 6044 | 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
| |||||||||||||||
| 7668 | "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
| |||||||||||||||
| 7672 | "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
| |||||||||||||||
| 7744 | "C:\Users\admin\Desktop\2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe" | C:\Users\admin\Desktop\2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe | explorer.exe | ||||||||||||
User: admin Company: Hewlett-Packard Development Company, LP Integrity Level: MEDIUM Description: USBSetupLauncher.exe Exit code: 1223 Version: 35.0.61.54677 Modules
| |||||||||||||||
| 8004 | "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
8 318
Read events
8 300
Write events
18
Delete events
0
Modification events
| (PID) Process: | (7744) 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content |
| Operation: | write | Name: | CachePrefix |
Value: | |||
| (PID) Process: | (7744) 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies |
| Operation: | write | Name: | CachePrefix |
Value: Cookie: | |||
| (PID) Process: | (7744) 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History |
| Operation: | write | Name: | CachePrefix |
Value: Visited: | |||
| (PID) Process: | (4696) BackgroundTransferHost.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\Content |
| Operation: | write | Name: | CachePrefix |
Value: | |||
| (PID) Process: | (4696) BackgroundTransferHost.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\Cookies |
| Operation: | write | Name: | CachePrefix |
Value: Cookie: | |||
| (PID) Process: | (4696) BackgroundTransferHost.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\History |
| Operation: | write | Name: | CachePrefix |
Value: Visited: | |||
| (PID) Process: | (1388) BackgroundTransferHost.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\Content |
| Operation: | write | Name: | CachePrefix |
Value: | |||
| (PID) Process: | (1388) BackgroundTransferHost.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\Cookies |
| Operation: | write | Name: | CachePrefix |
Value: Cookie: | |||
| (PID) Process: | (1388) BackgroundTransferHost.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\History |
| Operation: | write | Name: | CachePrefix |
Value: Visited: | |||
| (PID) Process: | (7672) BackgroundTransferHost.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\Content |
| Operation: | write | Name: | CachePrefix |
Value: | |||
Executable files
1
Suspicious files
3
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 7672 | BackgroundTransferHost.exe | C:\Users\admin\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\AC\BackgroundTransferApi\1808ca1d-6676-49a1-ae99-8e6b85c72d3f.down_data | — | |
MD5:— | SHA256:— | |||
| 7672 | BackgroundTransferHost.exe | C:\Users\admin\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\AC\BackgroundTransferApi\2eb87472-8f2e-47d5-9686-f877b3bb31af.up_meta_secure | binary | |
MD5:40459A438D0800976405B9BA5A494D52 | SHA256:E66C28CCEE68914E2359B8579C75731A661240510357255A7180BC5768D85693 | |||
| 7744 | 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe | C:\Users\admin\AppData\Local\Temp\conres.dll | executable | |
MD5:7574CF2C64F35161AB1292E2F532AABF | SHA256:DE055A89DE246E629A8694BDE18AF2B1605E4B9B493C7E4AEF669DD67ACF5085 | |||
| 7744 | 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe | C:\Users\admin\AppData\Local\Temp\conres.dll.000 | text | |
MD5:1130C911BF5DB4B8F7CF9B6F4B457623 | SHA256:EBA08CC8182F379392A97F542B350EA0DBBE5E4009472F35AF20E3D857EAFDF1 | |||
| 7672 | BackgroundTransferHost.exe | C:\Users\admin\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\AC\BackgroundTransferApi\1808ca1d-6676-49a1-ae99-8e6b85c72d3f.c74e70d4-137a-4a0f-9b5c-83201dfc4498.down_meta | binary | |
MD5:32B21900F00FF2096329118E76A23C0A | SHA256:3B1C55A6CB448E70D1705D09632AC4B40B30646EBA38A402215FAFF74404DF90 | |||
| 7672 | BackgroundTransferHost.exe | C:\Users\admin\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\AC\BackgroundTransferApi\2eb87472-8f2e-47d5-9686-f877b3bb31af.c74e70d4-137a-4a0f-9b5c-83201dfc4498.down_meta | binary | |
MD5:32B21900F00FF2096329118E76A23C0A | SHA256:3B1C55A6CB448E70D1705D09632AC4B40B30646EBA38A402215FAFF74404DF90 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
40
TCP/UDP connections
67
DNS requests
19
Threats
2
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
7744 | 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe | GET | 403 | 45.79.19.196:80 | http://www.aieov.com/logo.gif | unknown | — | — | malicious |
7744 | 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe | GET | 403 | 45.79.19.196:80 | http://www.aieov.com/logo.gif | unknown | — | — | malicious |
— | — | GET | 304 | 20.12.23.50:443 | 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 | — | — | — |
2104 | svchost.exe | GET | 200 | 23.48.23.143:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
8168 | SIHClient.exe | GET | 200 | 2.19.217.218:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
8168 | SIHClient.exe | GET | 200 | 23.48.23.167:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut_2010-06-23.crl | unknown | — | — | whitelisted |
8168 | SIHClient.exe | GET | 200 | 2.19.217.218:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Signing%20CA%202.1.crl | unknown | — | — | whitelisted |
8168 | SIHClient.exe | GET | 200 | 2.19.217.218:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20Update%20Signing%20CA%202.2.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 20.12.23.50:443 | https://slscr.update.microsoft.com/sls/ping | unknown | — | — | — |
— | — | GET | 200 | 20.242.39.171:443 | https://fe3cr.delivery.mp.microsoft.com/clientwebservice/ping | unknown | — | — | — |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
— | — | 40.127.240.158:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
— | — | 40.126.31.69:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
— | — | 40.113.110.67:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
— | — | 20.199.58.43:443 | arc.msn.com | MICROSOFT-CORP-MSN-AS-BLOCK | FR | whitelisted |
2104 | svchost.exe | 40.127.240.158:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
— | — | 20.198.162.76:443 | client.wns.windows.com | MICROSOFT-CORP-MSN-AS-BLOCK | SG | whitelisted |
— | — | 51.124.78.146:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
2104 | svchost.exe | 23.48.23.143:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
2104 | svchost.exe | 51.124.78.146:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
7744 | 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe | 45.79.19.196:80 | www.aieov.com | Linode, LLC | US | malicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
arc.msn.com |
| whitelisted |
google.com |
| whitelisted |
client.wns.windows.com |
| whitelisted |
settings-win.data.microsoft.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
5isohu.com |
| whitelisted |
www.aieov.com |
| malicious |
slscr.update.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
fe3cr.delivery.mp.microsoft.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
7744 | 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe | Malware Command and Control Activity Detected | MALWARE [ANY.RUN] Possible Floxif CnC Communication |
7744 | 2025-03-24_c4c1d1e5b940b44eb509a1682e803c40_bkransomware_floxif.exe | Malware Command and Control Activity Detected | MALWARE [ANY.RUN] Possible Floxif CnC Communication |