| File name: | winexp.exe |
| Full analysis: | https://app.any.run/tasks/3b705724-86e5-48cf-93c8-cc65e7077153 |
| Verdict: | Malicious activity |
| Analysis date: | July 31, 2020, 22:57:28 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | A096F7CABD94EE3D033E4E48C8D3DD4C |
| SHA1: | 4E837FD779B43AEB1B3166A03F3AC9EAC1D4B375 |
| SHA256: | 4735CAB11AB403219A345E3931C6AA9E96FB676BE4742E692D15427BD96974FD |
| SSDEEP: | 768:iuI8utT/w70kWUqjzumo2qzi/dXWm31IPI84ggzm0b5Ek3MvKdEoB8oma4xrKJLV:iuI9tT/kJ2M2t84gglb5Ek3Q9Myrtdox |
MALICIOUS
Changes the autorun value in the registry
- winexp.exe (PID: 540)
SUSPICIOUS
Starts CMD.EXE for commands execution
- winexp.exe (PID: 540)
- winexpdir.exe (PID: 3144)
Creates files in the user directory
- winexp.exe (PID: 540)
Executable content was dropped or overwritten
- winexp.exe (PID: 540)
INFO
No info indicators.
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (82.9) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (7.4) |
| .exe | | | Win32 Executable (generic) (5.1) |
| .exe | | | Generic Win/DOS Executable (2.2) |
| .exe | | | DOS Executable Generic (2.2) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2020:05:10 07:24:51+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 45568 |
| InitializedDataSize: | 2560 |
| UninitializedDataSize: | - |
| EntryPoint: | 0xd03e |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 1.0.0.0 |
| ProductVersionNumber: | 1.0.0.0 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | - |
| FileVersion: | 1.0.0.0 |
| InternalName: | Stub.exe |
| LegalCopyright: | - |
| LegalTrademarks: | - |
| OriginalFileName: | Stub.exe |
| ProductName: | - |
| ProductVersion: | 1.0.0.0 |
| AssemblyVersion: | 1.0.0.0 |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 10-May-2020 05:24:51 |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | - |
| FileVersion: | 1.0.0.0 |
| InternalName: | Stub.exe |
| LegalCopyright: | - |
| LegalTrademarks: | - |
| OriginalFilename: | Stub.exe |
| ProductName: | - |
| ProductVersion: | 1.0.0.0 |
| Assembly Version: | 1.0.0.0 |
DOS Header
| Magic number: | MZ |
|---|---|
| Bytes on last page of file: | 0x0090 |
| Pages in file: | 0x0003 |
| Relocations: | 0x0000 |
| Size of header: | 0x0004 |
| Min extra paragraphs: | 0x0000 |
| Max extra paragraphs: | 0xFFFF |
| Initial SS value: | 0x0000 |
| Initial SP value: | 0x00B8 |
| Checksum: | 0x0000 |
| Initial IP value: | 0x0000 |
| Initial CS value: | 0x0000 |
| Overlay number: | 0x0000 |
| OEM identifier: | 0x0000 |
| OEM information: | 0x0000 |
| Address of NE header: | 0x00000080 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 3 |
| Time date stamp: | 10-May-2020 05:24:51 |
| Pointer to Symbol Table: | 0x00000000 |
| Number of symbols: | 0 |
| Size of Optional Header: | 0x00E0 |
| Characteristics: |
|
Sections
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
.text | 0x00002000 | 0x0000B044 | 0x0000B200 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 5.61598 |
.rsrc | 0x0000E000 | 0x000007FF | 0x00000800 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.88507 |
.reloc | 0x00010000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.0815394 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.22615 | 1171 | UNKNOWN | UNKNOWN | RT_MANIFEST |
Imports
mscoree.dll |
Total processes
42
Monitored processes
6
Malicious processes
0
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 332 | cmd /c ""C:\Users\admin\AppData\Local\Temp\tmp551.tmp.bat"" | C:\Windows\system32\cmd.exe | — | winexpdir.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 1 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| 540 | "C:\Users\admin\AppData\Local\Temp\winexp.exe" | C:\Users\admin\AppData\Local\Temp\winexp.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 1896 | cmd /c ""C:\Users\admin\AppData\Local\Temp\tmp7E68.tmp.bat"" | C:\Windows\system32\cmd.exe | — | winexp.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 1 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| 2468 | timeout 3 | C:\Windows\system32\timeout.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: timeout - pauses command processing Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3144 | "C:\Users\admin\AppData\Roaming\winexpdir.exe" | C:\Users\admin\AppData\Roaming\winexpdir.exe | cmd.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 3864 | timeout 3 | C:\Windows\system32\timeout.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: timeout - pauses command processing Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
Total events
77
Read events
52
Write events
23
Delete events
2
Modification events
| (PID) Process: | (540) winexp.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\132\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (540) winexp.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | winexpdir |
Value: "C:\Users\admin\AppData\Roaming\winexpdir.exe" | |||
| (PID) Process: | (3144) winexpdir.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\132\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (3144) winexpdir.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced |
| Operation: | write | Name: | Hidden |
Value: 2 | |||
| (PID) Process: | (3144) winexpdir.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced |
| Operation: | write | Name: | HideFileExt |
Value: 1 | |||
| (PID) Process: | (3144) winexpdir.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | delete value | Name: | winexpdir |
Value: "C:\Users\admin\AppData\Roaming\winexpdir.exe" | |||
| (PID) Process: | (3144) winexpdir.exe | Key: | HKEY_CURRENT_USER\Software\D04F4D4D0DF87BA77AAE |
| Operation: | delete key | Name: | (default) |
Value: | |||
Executable files
1
Suspicious files
9
Text files
2
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3144 | winexpdir.exe | C:\Users\admin\AppData\Local\Temp\Cab9FEA.tmp | — | |
MD5:— | SHA256:— | |||
| 3144 | winexpdir.exe | C:\Users\admin\AppData\Local\Temp\Tar9FEB.tmp | — | |
MD5:— | SHA256:— | |||
| 3144 | winexpdir.exe | C:\Users\admin\AppData\Local\Temp\Cab9FFB.tmp | — | |
MD5:— | SHA256:— | |||
| 3144 | winexpdir.exe | C:\Users\admin\AppData\Local\Temp\Tar9FFC.tmp | — | |
MD5:— | SHA256:— | |||
| 3144 | winexpdir.exe | C:\Users\admin\AppData\Local\Temp\TarA09B.tmp | — | |
MD5:— | SHA256:— | |||
| 3144 | winexpdir.exe | C:\Users\admin\AppData\Local\Temp\CabA138.tmp | — | |
MD5:— | SHA256:— | |||
| 3144 | winexpdir.exe | C:\Users\admin\AppData\Local\Temp\TarA139.tmp | — | |
MD5:— | SHA256:— | |||
| 3144 | winexpdir.exe | C:\Users\admin\AppData\Local\Temp\CabA178.tmp | — | |
MD5:— | SHA256:— | |||
| 3144 | winexpdir.exe | C:\Users\admin\AppData\Local\Temp\TarA189.tmp | — | |
MD5:— | SHA256:— | |||
| 3144 | winexpdir.exe | C:\Users\admin\AppData\Local\Temp\CabAD3.tmp | — | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
6
TCP/UDP connections
6
DNS requests
2
Threats
1
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
3144 | winexpdir.exe | GET | 304 | 205.185.216.10:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | US | compressed | 56.7 Kb | whitelisted |
3144 | winexpdir.exe | GET | 304 | 205.185.216.10:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | US | compressed | 56.7 Kb | whitelisted |
3144 | winexpdir.exe | GET | 200 | 205.185.216.10:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | US | compressed | 56.7 Kb | whitelisted |
3144 | winexpdir.exe | GET | 304 | 205.185.216.10:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | US | compressed | 56.7 Kb | whitelisted |
3144 | winexpdir.exe | GET | 304 | 205.185.216.10:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | US | compressed | 56.7 Kb | whitelisted |
3144 | winexpdir.exe | GET | 304 | 205.185.216.10:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | US | compressed | 56.7 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 |
|---|---|---|---|---|---|---|
3144 | winexpdir.exe | 205.185.216.10:80 | www.download.windowsupdate.com | Highwinds Network Group, Inc. | US | whitelisted |
3144 | winexpdir.exe | 193.161.193.99:60454 | yannex-60454.portmap.host | OOO Bitree Networks | RU | malicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
yannex-60454.portmap.host |
| malicious |
www.download.windowsupdate.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
1048 | svchost.exe | Potential Corporate Privacy Violation | ET POLICY DNS Query to a Reverse Proxy Service Observed |