| File name: | MSTeamsSetup_c_l_.exe |
| Full analysis: | https://app.any.run/tasks/833be975-7da6-4916-8122-2e93142185b8 |
| Verdict: | Malicious activity |
| Analysis date: | April 21, 2024, 08:21:48 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows |
| MD5: | 092BFF0405AB418FE22C565E231BE2BA |
| SHA1: | 8AEF2B7D83B3D5AE55B24F25AB6621BB2DEA9287 |
| SHA256: | 156CAFA6DA98A57E481AAB74EF748726BD4DCE2912536FB59E65D9A57A3AE7A7 |
| SSDEEP: | 24576:4NYuPOTryV7OXRiYZgJw2K9KS74fVyhfP0dhyaz/PxSbQOUP8oSf37Z3/UyD:MOX6743ZvFKS74Nwfahyazx0LZ3jD |
MALICIOUS
Drops the executable file immediately after the start
- MSTeamsSetup_c_l_.exe (PID: 3416)
- Update.exe (PID: 324)
SUSPICIOUS
Process drops legitimate windows executable
- MSTeamsSetup_c_l_.exe (PID: 3416)
- Update.exe (PID: 324)
Executable content was dropped or overwritten
- MSTeamsSetup_c_l_.exe (PID: 3416)
- Update.exe (PID: 324)
Reads the Internet Settings
- Update.exe (PID: 324)
Reads settings of System Certificates
- Update.exe (PID: 324)
INFO
Checks supported languages
- MSTeamsSetup_c_l_.exe (PID: 3416)
- Update.exe (PID: 324)
Creates files or folders in the user directory
- MSTeamsSetup_c_l_.exe (PID: 3416)
- Update.exe (PID: 324)
Reads the machine GUID from the registry
- Update.exe (PID: 324)
Reads the computer name
- Update.exe (PID: 324)
Reads Environment values
- Update.exe (PID: 324)
Reads Microsoft Office registry keys
- Update.exe (PID: 324)
Reads the software policy settings
- Update.exe (PID: 324)
Create files in a temporary directory
- Update.exe (PID: 324)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win32 Executable (generic) (52.9) |
|---|---|---|
| .exe | | | Generic Win/DOS Executable (23.5) |
| .exe | | | DOS Executable Generic (23.5) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2022:04:19 22:24:16+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 14.16 |
| CodeSize: | 215040 |
| InitializedDataSize: | 1187840 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x14510 |
| OSVersion: | 6 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 1.4.4.0 |
| ProductVersionNumber: | 1.4.4.0 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Windows NT 32-bit |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Unicode |
| FileDescription: | Installer for Squirrel-based applications |
| FileVersion: | 1.4.4.0 |
| InternalName: | Setup.exe |
| LegalCopyright: | Copyright (C) 2014 |
| OriginalFileName: | Setup.exe |
| ProductName: | Squirrel-based application |
| ProductVersion: | 1.4.4.0 |
| SquirrelAwareVersion: | 1 |
Total processes
36
Monitored processes
2
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 324 | "C:\Users\admin\AppData\Local\SquirrelTemp\Update.exe" --install . --exeName=MSTeamsSetup_c_l_.exe --bootstrapperMode | C:\Users\admin\AppData\Local\SquirrelTemp\Update.exe | MSTeamsSetup_c_l_.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft Teams Version: 3.1.2.0 Modules
| |||||||||||||||
| 3416 | "C:\Users\admin\AppData\Local\Temp\MSTeamsSetup_c_l_.exe" | C:\Users\admin\AppData\Local\Temp\MSTeamsSetup_c_l_.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Installer for Squirrel-based applications Version: 1.4.4.0 Modules
| |||||||||||||||
Total events
5 088
Read events
5 061
Write events
27
Delete events
0
Modification events
| (PID) Process: | (324) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\Update_RASAPI32 |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (324) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\Update_RASAPI32 |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
| (PID) Process: | (324) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\Update_RASAPI32 |
| Operation: | write | Name: | FileTracingMask |
Value: | |||
| (PID) Process: | (324) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\Update_RASAPI32 |
| Operation: | write | Name: | ConsoleTracingMask |
Value: | |||
| (PID) Process: | (324) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\Update_RASAPI32 |
| Operation: | write | Name: | MaxFileSize |
Value: 1048576 | |||
| (PID) Process: | (324) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\Update_RASAPI32 |
| Operation: | write | Name: | FileDirectory |
Value: %windir%\tracing | |||
| (PID) Process: | (324) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\Update_RASMANCS |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (324) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\Update_RASMANCS |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
| (PID) Process: | (324) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\Update_RASMANCS |
| Operation: | write | Name: | FileTracingMask |
Value: | |||
| (PID) Process: | (324) Update.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\Update_RASMANCS |
| Operation: | write | Name: | ConsoleTracingMask |
Value: | |||
Executable files
2
Suspicious files
4
Text files
3
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 324 | Update.exe | C:\Users\admin\AppData\Local\SquirrelTemp\setup.json | binary | |
MD5:F57CCF6F5B9C1E2AAC3C144605B53AA5 | SHA256:A92CCAA545B4AF7A81AC10C260291C3C33FB68197D150F8A42D1FBF74EB27648 | |||
| 3416 | MSTeamsSetup_c_l_.exe | C:\Users\admin\AppData\Local\SquirrelTemp\downloading.gif | image | |
MD5:3488A1749B859E969C01BA981036FAB6 | SHA256:C3FA333FDBCE95D504AEE31912993DC17AB31324428F557AC774F7E98B049B99 | |||
| 324 | Update.exe | C:\Users\admin\AppData\Local\Microsoft\Teams\Update.exe | executable | |
MD5:55D2BE3EA0DC1DCAEEFDDD7ED12C05E9 | SHA256:5CACCD37E4DF62DCF709605DE3F79664DE7190534B56CD69BCC96BDF0F939437 | |||
| 3416 | MSTeamsSetup_c_l_.exe | C:\Users\admin\AppData\Local\SquirrelTemp\Update.exe | executable | |
MD5:55D2BE3EA0DC1DCAEEFDDD7ED12C05E9 | SHA256:5CACCD37E4DF62DCF709605DE3F79664DE7190534B56CD69BCC96BDF0F939437 | |||
| 324 | Update.exe | C:\Users\admin\AppData\Roaming\Microsoft\Teams\teams_install_session.json | binary | |
MD5:3FB8EB726BEBC7A177B372A1CFCAE996 | SHA256:A7D74D3B404E010F6349937DBFA1FE726BA376CDA7FABCC58CB496A63580AA99 | |||
| 324 | Update.exe | C:\Users\admin\AppData\Roaming\Microsoft\Teams\SquirrelTelemetry.log | text | |
MD5:C2C7EE70C33FDA1AF69019FE1E5AA651 | SHA256:5F9485AC6FCA84150DBB062114954EA05AB289C77CFF8ACC5465CE16218FA757 | |||
| 3416 | MSTeamsSetup_c_l_.exe | C:\Users\admin\AppData\Local\SquirrelTemp\endpoint.json | binary | |
MD5:677CAB9A8B50AD026CFA7625A35DD2D7 | SHA256:07890DDA20815E1E57DCA9553F5DFCFF1B85F4A4369685D4991599E2618978F0 | |||
| 3416 | MSTeamsSetup_c_l_.exe | C:\Users\admin\AppData\Local\SquirrelTemp\background.gif | image | |
MD5:FF1F29DCA0451246C3CA6CB7B023434F | SHA256:753D7D351E427246E2B6CC86C45E21F952939E306C3EB2FDB1BD7D67842C64B8 | |||
| 324 | Update.exe | C:\Users\admin\AppData\Local\Microsoft\Teams\setup.json | binary | |
MD5:F57CCF6F5B9C1E2AAC3C144605B53AA5 | SHA256:A92CCAA545B4AF7A81AC10C260291C3C33FB68197D150F8A42D1FBF74EB27648 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
8
DNS requests
4
Threats
0
HTTP requests
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 |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
— | — | 224.0.0.252:5355 | — | — | — | unknown |
324 | Update.exe | 52.113.194.132:443 | teams.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | unknown |
1080 | svchost.exe | 224.0.0.252:5355 | — | — | — | unknown |
324 | Update.exe | 52.123.129.14:443 | teams.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | unknown |
324 | Update.exe | 2.18.244.199:443 | statics.teams.cdn.office.net | Akamai International B.V. | FR | unknown |
324 | Update.exe | 20.189.173.27:443 | mobile.pipe.aria.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
teams.live.com |
| unknown |
teams.microsoft.com |
| whitelisted |
statics.teams.cdn.office.net |
| whitelisted |
mobile.pipe.aria.microsoft.com |
| whitelisted |
Threats
Process | Message |
|---|---|
Update.exe | TelemetryManagerImpl creation started
|
Update.exe | Update.exe Information: 0 : |
Update.exe | Update.exe Information: 0 : |
Update.exe | Starting TelemetryManager constructor
|
Update.exe | Update.exe Information: 0 : |
Update.exe | Performance counters are disabled. Skipping creation of counters category.
|
Update.exe | RecordBatcherTask with ID 4 started.
|
Update.exe | Update.exe Information: 0 : |
Update.exe | DataPackageSender with UserAgent name: AST-exe-C#, version: 3.1.2.0, [Ast_Default_Source]
|
Update.exe | SendTask with ID 6 started
|