| File name: | TeamsSetup_c_w_.exe |
| Full analysis: | https://app.any.run/tasks/b6e5caca-8f35-4196-b616-33e01a44885b |
| Verdict: | Malicious activity |
| Threats: | A loader is malicious software that infiltrates devices to deliver malicious payloads. This malware is capable of infecting victims’ computers, analyzing their system information, and installing other types of threats, such as trojans or stealers. Criminals usually deliver loaders through phishing emails and links by relying on social engineering to trick users into downloading and running their executables. Loaders employ advanced evasion and persistence tactics to avoid detection. |
| Analysis date: | November 04, 2024, 21:19:50 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows, 5 sections |
| MD5: | 421929E5BC40AEC63886FEF1F7FF898A |
| SHA1: | 098F641964804749EC6CF2A1C683DA0A0EE2FF0F |
| SHA256: | 708C30F5C63D8FB807058C006031FA916D9E1C7E4AD6BD97A736AA7D19F09E1C |
| SSDEEP: | 24576:VNYuPOTryV7OXRB0KcYn+ssmpdZIONA4ySN+98X3GVF4nIuUWHWzazqu7Z3Cmj:/OX674CKRr5IOMYIRtazqaZ3b |
MALICIOUS
No malicious indicators.SUSPICIOUS
Starts a Microsoft application from unusual location
- TeamsSetup_c_w_.exe (PID: 2576)
Process drops legitimate windows executable
- TeamsSetup_c_w_.exe (PID: 2576)
- Update.exe (PID: 1160)
Executable content was dropped or overwritten
- TeamsSetup_c_w_.exe (PID: 2576)
- Update.exe (PID: 1160)
INFO
Creates files or folders in the user directory
- TeamsSetup_c_w_.exe (PID: 2576)
- Update.exe (PID: 1160)
Checks supported languages
- Update.exe (PID: 1160)
- TeamsSetup_c_w_.exe (PID: 2576)
Reads the computer name
- Update.exe (PID: 1160)
Reads the machine GUID from the registry
- Update.exe (PID: 1160)
Sends debugging messages
- Update.exe (PID: 1160)
Reads Microsoft Office registry keys
- Update.exe (PID: 1160)
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: | 2023:04:12 23:56:55+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 14.16 |
| CodeSize: | 215040 |
| InitializedDataSize: | 1208832 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x14510 |
| OSVersion: | 6 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 1.6.0.18681 |
| ProductVersionNumber: | 1.6.0.18681 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Windows NT 32-bit |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Unicode |
| FileDescription: | Microsoft Teams |
| FileVersion: | 1.6.00.18681 |
| InternalName: | Setup.exe |
| LegalCopyright: | Copyright (C) 2016 Microsoft. All rights reserved. |
| OriginalFileName: | Setup.exe |
| ProductName: | Microsoft Teams |
| ProductVersion: | 1.6.00.18681 |
| SquirrelAwareVersion: | 1 |
| CompanyName: | Microsoft Corporation |
Total processes
125
Monitored processes
2
Malicious processes
0
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1160 | "C:\Users\admin\AppData\Local\SquirrelTemp\Update.exe" --install . --exeName=TeamsSetup_c_w_.exe --bootstrapperMode | C:\Users\admin\AppData\Local\SquirrelTemp\Update.exe | TeamsSetup_c_w_.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft Teams Version: 3.3.2.0 Modules
| |||||||||||||||
| 2576 | "C:\Users\admin\Desktop\TeamsSetup_c_w_.exe" | C:\Users\admin\Desktop\TeamsSetup_c_w_.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft Teams Version: 1.6.00.18681 Modules
| |||||||||||||||
Total events
4 637
Read events
4 623
Write events
14
Delete events
0
Modification events
| (PID) Process: | (1160) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\Update_RASAPI32 |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (1160) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\Update_RASAPI32 |
| Operation: | write | Name: | EnableAutoFileTracing |
Value: 0 | |||
| (PID) Process: | (1160) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\Update_RASAPI32 |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
| (PID) Process: | (1160) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\Update_RASAPI32 |
| Operation: | write | Name: | FileTracingMask |
Value: | |||
| (PID) Process: | (1160) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\Update_RASAPI32 |
| Operation: | write | Name: | ConsoleTracingMask |
Value: | |||
| (PID) Process: | (1160) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\Update_RASAPI32 |
| Operation: | write | Name: | MaxFileSize |
Value: 1048576 | |||
| (PID) Process: | (1160) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\Update_RASAPI32 |
| Operation: | write | Name: | FileDirectory |
Value: %windir%\tracing | |||
| (PID) Process: | (1160) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\Update_RASMANCS |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (1160) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\Update_RASMANCS |
| Operation: | write | Name: | EnableAutoFileTracing |
Value: 0 | |||
| (PID) Process: | (1160) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\Update_RASMANCS |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
Executable files
3
Suspicious files
4
Text files
3
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2576 | TeamsSetup_c_w_.exe | C:\Users\admin\AppData\Local\SquirrelTemp\endpoint.json | binary | |
MD5:1AFCC3A53B2154F10E73BB2E766F4E05 | SHA256:00D7742CA8257126B875ED941A04FD500111EC0AD557984D825619F09E93972E | |||
| 2576 | TeamsSetup_c_w_.exe | C:\Users\admin\AppData\Local\SquirrelTemp\downloading.gif | image | |
MD5:3488A1749B859E969C01BA981036FAB6 | SHA256:C3FA333FDBCE95D504AEE31912993DC17AB31324428F557AC774F7E98B049B99 | |||
| 2576 | TeamsSetup_c_w_.exe | C:\Users\admin\AppData\Local\SquirrelTemp\background.gif | image | |
MD5:FF1F29DCA0451246C3CA6CB7B023434F | SHA256:753D7D351E427246E2B6CC86C45E21F952939E306C3EB2FDB1BD7D67842C64B8 | |||
| 2576 | TeamsSetup_c_w_.exe | C:\Users\admin\AppData\Local\SquirrelTemp\Update.exe | executable | |
MD5:F8A053ECA55E576BF79A8F6363D6488E | SHA256:0F22E5E3CE71736F4A75DE8C26C8248434A22C93716D703066979F37F1479F4B | |||
| 1160 | Update.exe | C:\Users\admin\AppData\Roaming\Microsoft\Teams\SquirrelTelemetry.log | text | |
MD5:DC8898C6EB6955C785C4FFBCADD37B92 | SHA256:C73CCDBCE0C18F1B12B2388FE697FFFBCC47CB3D763A3B6C3FF7DD9963D2B1CE | |||
| 1160 | Update.exe | C:\Users\admin\AppData\Local\Microsoft\Teams\packages\RELEASES.exe | executable | |
MD5:4BF1D89CCCA72EFA8CB2D1BA38FFBE65 | SHA256:2A7594C551FE043F3EEE07319948B4C72B240001345AC319C10DC73B0BA3C842 | |||
| 1160 | Update.exe | C:\Users\admin\AppData\Local\Microsoft\Teams\Update.exe | executable | |
MD5:F8A053ECA55E576BF79A8F6363D6488E | SHA256:0F22E5E3CE71736F4A75DE8C26C8248434A22C93716D703066979F37F1479F4B | |||
| 1160 | Update.exe | C:\Users\admin\AppData\Local\SquirrelTemp\setup.json | binary | |
MD5:8F5894E9228D6D763754FBFE65BCD85C | SHA256:5CB2D78B508771EA25BC8B6CC129DA69E03CD282323F2EC6B727DC08087FE8EB | |||
| 1160 | Update.exe | C:\Users\admin\AppData\Local\Microsoft\Teams\setup.json | binary | |
MD5:8F5894E9228D6D763754FBFE65BCD85C | SHA256:5CB2D78B508771EA25BC8B6CC129DA69E03CD282323F2EC6B727DC08087FE8EB | |||
| 1160 | Update.exe | C:\Users\admin\AppData\Roaming\Microsoft\Teams\teams_install_session.json | binary | |
MD5:368940C7426ACDBDD1F2EFE5D59E949B | SHA256:CB57D11AB620556E9DEA82FAD9CB277FB72DBFB4C06BC74F26469E226B057FF9 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
8
TCP/UDP connections
29
DNS requests
11
Threats
2
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
5488 | MoUsoCoreWorker.exe | GET | 200 | 2.16.241.12:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
5488 | MoUsoCoreWorker.exe | GET | 200 | 23.32.185.131:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
6944 | svchost.exe | GET | 200 | 2.16.241.12:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
6944 | svchost.exe | GET | 200 | 23.32.185.131:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
— | — | GET | — | 23.53.40.51:443 | https://statics.teams.cdn.office.net/production-windows-x64/1.7.00.27855/Teams-1.7.00.27855-full.nupkg | unknown | — | — | — |
— | — | POST | 200 | 20.189.173.18:443 | https://mobile.pipe.aria.microsoft.com/Collector/3.0/ | unknown | — | — | whitelisted |
— | — | GET | 200 | 52.123.128.14:443 | https://teams.microsoft.com/desktopclient/installer/windows/x64 | unknown | text | 94 b | whitelisted |
— | — | GET | 200 | 23.53.40.75:443 | https://statics.teams.cdn.office.net/production-windows-x64/1.7.00.27855/RELEASES.exe | unknown | executable | 25.6 Kb | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
5488 | MoUsoCoreWorker.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
6944 | svchost.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
— | — | 2.23.209.187:443 | www.bing.com | Akamai International B.V. | GB | whitelisted |
— | — | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
5488 | MoUsoCoreWorker.exe | 2.16.241.12:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
6944 | svchost.exe | 2.16.241.12:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
5488 | MoUsoCoreWorker.exe | 23.32.185.131:80 | www.microsoft.com | AKAMAI-AS | BR | whitelisted |
6944 | svchost.exe | 23.32.185.131:80 | www.microsoft.com | AKAMAI-AS | BR | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
www.bing.com |
| whitelisted |
google.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
teams.microsoft.com |
| whitelisted |
statics.teams.cdn.office.net |
| whitelisted |
mobile.pipe.aria.microsoft.com |
| whitelisted |
self.events.data.microsoft.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
— | — | Potential Corporate Privacy Violation | ET POLICY PE EXE or DLL Windows file download HTTP |
— | — | Potentially Bad Traffic | ET INFO Executable Retrieved With Minimal HTTP Headers - Potential Second Stage Download |
Process | Message |
|---|---|
Update.exe | Update.exe Information: 0 : |
Update.exe | Starting TelemetryManager constructor
|
Update.exe | Update.exe Information: 0 : |
Update.exe | TelemetryManagerImpl creation started
|
Update.exe | Performance counters are disabled. Skipping creation of counters category.
|
Update.exe | Update.exe Information: 0 : |
Update.exe | Update.exe Information: 0 : |
Update.exe | RecordBatcherTask with ID 4 started.
|
Update.exe | DataPackageSender with UserAgent name: AST-exe-C#, version: 3.3.2.0, [Ast_Default_Source]
|
Update.exe | DataPackageSender with UserAgent name: AST-exe-C#, version: 3.3.2.0, [Ast_Default_Source]
|