| File name: | esentutl.exe.b |
| Full analysis: | https://app.any.run/tasks/05de91c8-5f29-4c4c-a02f-fe0f43b8aca9 |
| Verdict: | Malicious activity |
| Threats: | Emotet is one of the most dangerous trojans ever created. Over the course of its lifetime, it was upgraded to become a very destructive malware. It targets mostly corporate victims but even private users get infected in mass spam email campaigns. |
| Analysis date: | April 19, 2024, 12:25:55 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows |
| MD5: | CA06ACD3E1CAB1691A7670A5F23BAEF4 |
| SHA1: | 2EA0262CD42378AD00462D080FF18BFE994BB8FC |
| SHA256: | 3A9494F66BABC7DEB43F65F9F28C44BD9BD4B3237031D80314AE7EB3526A4D8F |
| SSDEEP: | 3072:nlw45oKqiP+e0ELb0h3Zc0SMMZMMMMtrzFvqzychWU5ixUR:nlwqqi3hwhJcJXaJWLxO |
MALICIOUS
Drops the executable file immediately after the start
- esentutl.exe.b.exe (PID: 324)
- esentutl.exe.b.exe (PID: 1072)
Emotet process is detected
- esentutl.exe.b.exe (PID: 1072)
- soundser.exe (PID: 3248)
EMOTET has been detected (YARA)
- soundser.exe (PID: 2932)
SUSPICIOUS
Process drops legitimate windows executable
- esentutl.exe.b.exe (PID: 324)
- esentutl.exe.b.exe (PID: 1072)
Starts a Microsoft application from unusual location
- esentutl.exe.b.exe (PID: 324)
- esentutl.exe.b.exe (PID: 1072)
Application launched itself
- esentutl.exe.b.exe (PID: 324)
- soundser.exe (PID: 3248)
Executable content was dropped or overwritten
- esentutl.exe.b.exe (PID: 1072)
Starts itself from another location
- esentutl.exe.b.exe (PID: 1072)
Reads the Internet Settings
- soundser.exe (PID: 2932)
INFO
Checks supported languages
- esentutl.exe.b.exe (PID: 324)
- esentutl.exe.b.exe (PID: 1072)
- soundser.exe (PID: 3248)
- soundser.exe (PID: 2932)
- wmpnscfg.exe (PID: 3244)
Reads the computer name
- esentutl.exe.b.exe (PID: 1072)
- soundser.exe (PID: 2932)
- wmpnscfg.exe (PID: 3244)
Reads the machine GUID from the registry
- soundser.exe (PID: 2932)
- esentutl.exe.b.exe (PID: 1072)
Checks proxy server information
- soundser.exe (PID: 2932)
Manual execution by a user
- wmpnscfg.exe (PID: 3244)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win32 Executable MS Visual C++ (generic) (42.2) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (37.3) |
| .dll | | | Win32 Dynamic Link Library (generic) (8.8) |
| .exe | | | Win32 Executable (generic) (6) |
| .exe | | | Generic Win/DOS Executable (2.7) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2019:04:17 08:59:10+00:00 |
| ImageFileCharacteristics: | No relocs, Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 9 |
| CodeSize: | 95232 |
| InitializedDataSize: | 13312 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x17e00 |
| OSVersion: | 5 |
| ImageVersion: | - |
| SubsystemVersion: | 5 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 6.1.7600.16385 |
| ProductVersionNumber: | 6.1.7600.16385 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Windows NT 32-bit |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Unicode |
| CompanyName: | Microsoft Corporation |
| FileDescription: | Extensible Storage Engine Utilities for Microsoft(R) Windows(R) |
| FileVersion: | 6.1.7600.16385 (win7_rtm.090713-1255) |
| InternalName: | esentutl.exe |
| LegalCopyright: | © Microsoft Corporation. All rights reserved. |
| OriginalFileName: | esentutl.exe |
| ProductName: | Microsoft® Windows® Operating System |
| ProductVersion: | 6.1.7600.16385 |
Total processes
39
Monitored processes
5
Malicious processes
4
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\Temp\esentutl.exe.b.exe" | C:\Users\admin\AppData\Local\Temp\esentutl.exe.b.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Extensible Storage Engine Utilities for Microsoft(R) Windows(R) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 1072 | --e018274c | C:\Users\admin\AppData\Local\Temp\esentutl.exe.b.exe | esentutl.exe.b.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Extensible Storage Engine Utilities for Microsoft(R) Windows(R) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2932 | --3ab57678 | C:\Users\admin\AppData\Local\soundser\soundser.exe | soundser.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Extensible Storage Engine Utilities for Microsoft(R) Windows(R) Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3244 | "C:\Program Files\Windows Media Player\wmpnscfg.exe" | C:\Program Files\Windows Media Player\wmpnscfg.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Media Player Network Sharing Service Configuration Application Exit code: 0 Version: 12.0.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3248 | "C:\Users\admin\AppData\Local\soundser\soundser.exe" | C:\Users\admin\AppData\Local\soundser\soundser.exe | esentutl.exe.b.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Extensible Storage Engine Utilities for Microsoft(R) Windows(R) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
Total events
1 050
Read events
1 032
Write events
12
Delete events
6
Modification events
| (PID) Process: | (2932) soundser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content |
| Operation: | write | Name: | CachePrefix |
Value: | |||
| (PID) Process: | (2932) soundser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies |
| Operation: | write | Name: | CachePrefix |
Value: Cookie: | |||
| (PID) Process: | (2932) soundser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History |
| Operation: | write | Name: | CachePrefix |
Value: Visited: | |||
| (PID) Process: | (2932) soundser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings |
| Operation: | write | Name: | ProxyEnable |
Value: 0 | |||
| (PID) Process: | (2932) soundser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings |
| Operation: | delete value | Name: | ProxyServer |
Value: | |||
| (PID) Process: | (2932) soundser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings |
| Operation: | delete value | Name: | ProxyOverride |
Value: | |||
| (PID) Process: | (2932) soundser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings |
| Operation: | delete value | Name: | AutoConfigURL |
Value: | |||
| (PID) Process: | (2932) soundser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings |
| Operation: | delete value | Name: | AutoDetect |
Value: | |||
| (PID) Process: | (2932) soundser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections |
| Operation: | write | Name: | SavedLegacySettings |
Value: 460000005D010000090000000000000000000000000000000400000000000000C0E333BBEAB1D3010000000000000000000000000100000002000000C0A8016B000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | |||
| (PID) Process: | (2932) soundser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FCC67766-6201-4AD1-A6B8-2F4553C93D47} |
| Operation: | write | Name: | WpadDecisionReason |
Value: 1 | |||
Executable files
1
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 1072 | esentutl.exe.b.exe | C:\Users\admin\AppData\Local\soundser\soundser.exe | executable | |
MD5:CA06ACD3E1CAB1691A7670A5F23BAEF4 | SHA256:3A9494F66BABC7DEB43F65F9F28C44BD9BD4B3237031D80314AE7EB3526A4D8F | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
6
DNS requests
1
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 |
1080 | svchost.exe | 224.0.0.252:5355 | — | — | — | unknown |
2932 | soundser.exe | 181.37.126.2:80 | — | ALTICE DOMINICANA S.A. | DO | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
dns.msftncsi.com |
| shared |