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| File name: | rundll32.exe |
| Full analysis: | https://app.any.run/tasks/466803af-216b-4710-9616-6056ce68ac47 |
| Verdict: | Malicious activity |
| Analysis date: | September 11, 2019, 04:25:40 |
| 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: | EC6C7F12DA21A585EF3D122354F46FDF |
| SHA1: | 307910B0E845388320D24898E98D512352921809 |
| SHA256: | 6492A9948F41087AA5F0786F41FA5CFEAE20EE02592ABD0C118AAD9F24167A8D |
| SSDEEP: | 3072:wz1icbmEvrISL67RjQBCzsaEeivh27Cvgcck9ziB9PmdXto:q1icbPjIS2ZIabiyogcv9ziqht |
MALICIOUS
Changes the autorun value in the registry
- reg.exe (PID: 3084)
SUSPICIOUS
Starts CMD.EXE for commands execution
- rundll32.exe (PID: 3696)
Uses REG.EXE to modify Windows registry
- cmd.exe (PID: 3520)
- cmd.exe (PID: 3936)
Executable content was dropped or overwritten
- cmd.exe (PID: 3192)
Uses ATTRIB.EXE to modify file attributes
- cmd.exe (PID: 3320)
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.) (63.1) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (23.8) |
| .dll | | | Win32 Dynamic Link Library (generic) (5.6) |
| .exe | | | Win32 Executable (generic) (3.8) |
| .exe | | | Generic Win/DOS Executable (1.7) |
EXIF
EXE
| AssemblyVersion: | 1.0.0.0 |
|---|---|
| ProductVersion: | 1.0.0.0 |
| ProductName: | rundll32 |
| OriginalFileName: | rundll32.exe |
| LegalTrademarks: | - |
| LegalCopyright: | © Microsoft Corporation. All rights reserved. |
| InternalName: | rundll32.exe |
| FileVersion: | 1.0.0.0 |
| FileDescription: | rundll32 |
| CompanyName: | Microsoft Corporation |
| Comments: | Windows host process (rundll32) |
| CharacterSet: | Unicode |
| LanguageCode: | Neutral |
| FileSubtype: | - |
| ObjectFileType: | Executable application |
| FileOS: | Win32 |
| FileFlags: | (none) |
| FileFlagsMask: | 0x003f |
| ProductVersionNumber: | 1.0.0.0 |
| FileVersionNumber: | 1.0.0.0 |
| Subsystem: | Windows GUI |
| SubsystemVersion: | 6 |
| ImageVersion: | - |
| OSVersion: | 4 |
| EntryPoint: | 0x14946 |
| UninitializedDataSize: | - |
| InitializedDataSize: | 86528 |
| CodeSize: | 76288 |
| LinkerVersion: | 80 |
| PEType: | PE32 |
| TimeStamp: | 2066:11:02 02:40:34+01:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 26-Sep-1930 19:12:18 |
| Debug artifacts: |
|
| Comments: | Windows host process (rundll32) |
| CompanyName: | Microsoft Corporation |
| FileDescription: | rundll32 |
| FileVersion: | 1.0.0.0 |
| InternalName: | rundll32.exe |
| LegalCopyright: | © Microsoft Corporation. All rights reserved. |
| LegalTrademarks: | - |
| OriginalFilename: | rundll32.exe |
| ProductName: | rundll32 |
| 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: | 26-Sep-1930 19:12:18 |
| 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 | 0x0001294C | 0x00012A00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 5.46257 |
.rsrc | 0x00016000 | 0x00014FB8 | 0x00015000 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 7.43009 |
.reloc | 0x0002C000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.10191 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 4.99419 | 3365 | UNKNOWN | UNKNOWN | RT_MANIFEST |
2 | 3.3924 | 744 | UNKNOWN | UNKNOWN | RT_ICON |
3 | 3.24318 | 296 | UNKNOWN | UNKNOWN | RT_ICON |
4 | 5.48464 | 3752 | UNKNOWN | UNKNOWN | RT_ICON |
5 | 4.99068 | 2216 | UNKNOWN | UNKNOWN | RT_ICON |
6 | 3.64122 | 1384 | UNKNOWN | UNKNOWN | RT_ICON |
7 | 7.98413 | 55672 | UNKNOWN | UNKNOWN | RT_ICON |
8 | 5.23038 | 9640 | UNKNOWN | UNKNOWN | RT_ICON |
9 | 4.42769 | 4264 | UNKNOWN | UNKNOWN | RT_ICON |
10 | 5.14736 | 1128 | UNKNOWN | UNKNOWN | RT_ICON |
Imports
mscoree.dll |
Total processes
43
Monitored processes
8
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 3696 | "C:\Users\admin\AppData\Local\Temp\rundll32.exe" | C:\Users\admin\AppData\Local\Temp\rundll32.exe | — | explorer.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: rundll32 Exit code: 0 Version: 1.0.0.0 | ||||
| 3936 | "C:\Windows\System32\cmd.exe" /c reg add HKEY_CURRENT_USER\Software\Microsoft /v RunOnStartup /t REG_SZ /d true | C:\Windows\System32\cmd.exe | — | rundll32.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) | ||||
| 2464 | reg add HKEY_CURRENT_USER\Software\Microsoft /v RunOnStartup /t REG_SZ /d true | C:\Windows\system32\reg.exe | — | cmd.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Registry Console Tool Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 3192 | "C:\Windows\System32\cmd.exe" /c copy C:\Users\admin\AppData\Local\Temp\rundll32.exe C:\Users\%username%\ | C:\Windows\System32\cmd.exe | rundll32.exe | |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) | ||||
| 3320 | "C:\Windows\System32\cmd.exe" /c attrib C:\Users\%username%\rundll32.exe +r +s +h | C:\Windows\System32\cmd.exe | — | rundll32.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) | ||||
| 3520 | "C:\Windows\System32\cmd.exe" /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /v rundll32 /t REG_SZ /d C:\Users\%username%\rundll32.exe | C:\Windows\System32\cmd.exe | — | rundll32.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) | ||||
| 3084 | reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /v rundll32 /t REG_SZ /d C:\Users\admin\rundll32.exe | C:\Windows\system32\reg.exe | cmd.exe | |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Registry Console Tool Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 3108 | attrib C:\Users\admin\rundll32.exe +r +s +h | C:\Windows\system32\attrib.exe | — | cmd.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Attribute Utility Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
Total events
125
Read events
119
Write events
6
Delete events
0
Modification events
| (PID) Process: | (3696) rundll32.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (3696) rundll32.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
| (PID) Process: | — | Key: | HKEY_CURRENT_USER\Software\Microsoft |
| Operation: | write | Name: | RunOnStartup |
Value: true | |||
| (PID) Process: | (3084) reg.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | rundll32 |
Value: C:\Users\admin\rundll32.exe | |||
Executable files
1
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3192 | cmd.exe | C:\Users\admin\rundll32.exe | executable | |
MD5:EC6C7F12DA21A585EF3D122354F46FDF | SHA256:6492A9948F41087AA5F0786F41FA5CFEAE20EE02592ABD0C118AAD9F24167A8D | |||
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HTTP(S) requests
0
TCP/UDP connections
0
DNS requests
0
Threats
0
HTTP requests
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