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| File name: | RKSvr.exe |
| Full analysis: | https://app.any.run/tasks/2c960cba-689e-4e65-8e8d-3815a5d5a2b3 |
| Verdict: | Malicious activity |
| Analysis date: | July 17, 2019, 03:14:35 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows |
| MD5: | 5902731A4BE4A7BE553F4E94FE26D9B2 |
| SHA1: | F2898E122C8852673772F9AA0F91D9008C37D5E3 |
| SHA256: | 8674C76583C13C60FCB6DC344BAE4A5149CCE35A85BB600F0A6AF5E769B98585 |
| SSDEEP: | 24576:9c4OL5IJCKq8I4mx101txSdPaQVCRC9hlmETvi2JJ6/aKMPOmW99ZPy4ey0idRDe:6PqCKq8u41qdHV9XvTAaK2NW99ty408k |
MALICIOUS
Loads dropped or rewritten executable
- RKSvr.exe (PID: 3092)
- explorer.exe (PID: 284)
- ComputerDefaults.exe (PID: 2976)
Application was injected by another process
- explorer.exe (PID: 284)
Runs injected code in another process
- RKSvr.exe (PID: 3092)
Application was dropped or rewritten from another process
- ComputerDefaults.exe (PID: 2540)
- ComputerDefaults.exe (PID: 2976)
Starts NET.EXE for service management
- RKSvr.exe (PID: 3828)
SUSPICIOUS
Executable content was dropped or overwritten
- RKSvr.exe (PID: 3092)
- DllHost.exe (PID: 3540)
- RKSvr.exe (PID: 3828)
Creates files in the Windows directory
- DllHost.exe (PID: 3540)
- RKSvr.exe (PID: 3828)
Executed via COM
- DllHost.exe (PID: 3540)
Starts CMD.EXE for commands execution
- RKSvr.exe (PID: 3092)
- RKSvr.exe (PID: 3828)
Removes files from Windows directory
- DllHost.exe (PID: 3540)
INFO
No info indicators.
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .dll | | | Win32 Dynamic Link Library (generic) (43.5) |
|---|---|---|
| .exe | | | Win32 Executable (generic) (29.8) |
| .exe | | | Generic Win/DOS Executable (13.2) |
| .exe | | | DOS Executable Generic (13.2) |
| .vxd | | | VXD Driver (0.2) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 1970:01:01 04:25:45+01:00 |
| PEType: | PE32 |
| LinkerVersion: | 2.52 |
| CodeSize: | 26360 |
| InitializedDataSize: | 1140736 |
| UninitializedDataSize: | 2648 |
| EntryPoint: | 0x401dd |
| OSVersion: | 1 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 6.1.7600.16385 |
| ProductVersionNumber: | 6.1.7600.16385 |
| FileFlagsMask: | 0x0000 |
| FileFlags: | (none) |
| FileOS: | Windows NT 32-bit |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Unicode |
| CompanyName: | Microsoft Corporation |
| FileDescription: | ODBC Administrator |
| FileVersion: | 6.1.7600.16385 (win7_rtm.090713-1255) |
| InternalName: | odbcad32.exe |
| LegalCopyright: | ? Microsoft Corporation. All rights reserved. |
| OriginalFileName: | odbcad32.exe |
| ProductName: | Microsoft? Windows? Operating System |
| ProductVersion: | 6.1.7600.16385 |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 01-Jan-1970 03:25:45 |
DOS Header
| Magic number: | MZ |
|---|---|
| Bytes on last page of file: | 0x000A |
| Pages in file: | 0x0002 |
| Relocations: | 0x0000 |
| Size of header: | 0x0004 |
| Min extra paragraphs: | 0x000F |
| Max extra paragraphs: | 0xFFFF |
| Initial SS value: | 0x0000 |
| Initial SP value: | 0x00C0 |
| 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: | 8 |
| Time date stamp: | 01-Jan-1970 03:25:45 |
| 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 | 0x00001000 | 0x000066F8 | 0x00000000 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 0 |
.data | 0x00008000 | 0x00000E58 | 0x00000000 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0 |
.link | 0x00009000 | 0x00000B70 | 0x00000000 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0 |
.UPX0 | 0x0000A000 | 0x000133E6 | 0x00000000 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0 |
.tls | 0x0001E000 | 0x00000018 | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0 |
.UPX1 | 0x0001F000 | 0x00156CB9 | 0x00156E00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 7.8213 |
.rloc | 0x00176000 | 0x00000124 | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 3.53049 |
.rsrc | 0x00177000 | 0x00115098 | 0x00000600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 2.89083 |
Imports
COMCTL32.DLL |
GDI32.DLL |
KERNEL32.DLL |
OLE32.DLL |
OLEAUT32.DLL |
USER32.DLL |
VERSION.DLL |
Total processes
51
Monitored processes
12
Malicious processes
4
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 3092 | "C:\Users\admin\AppData\Local\Temp\RKSvr.exe" | C:\Users\admin\AppData\Local\Temp\RKSvr.exe | explorer.exe | |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: ODBC Administrator Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 284 | C:\Windows\Explorer.EXE | C:\Windows\explorer.exe | — | |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Explorer Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 3540 | C:\Windows\system32\DllHost.exe /Processid:{3AD05575-8857-4850-9277-11B85BDB8E09} | C:\Windows\system32\DllHost.exe | svchost.exe | |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: COM Surrogate Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 2540 | "C:\Windows\System32\sysprep\ComputerDefaults.exe" -Start "C:\Users\admin\AppData\Local\Temp\RKSvr.exe" | C:\Windows\System32\sysprep\ComputerDefaults.exe | — | explorer.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Set Program Access and Computer Defaults Control Panel Exit code: 3221226540 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 2976 | "C:\Windows\System32\sysprep\ComputerDefaults.exe" -Start "C:\Users\admin\AppData\Local\Temp\RKSvr.exe" | C:\Windows\System32\sysprep\ComputerDefaults.exe | explorer.exe | |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Set Program Access and Computer Defaults Control Panel Exit code: 4294967227 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 3828 | C:\Users\admin\AppData\Local\Temp\RKSvr.exe | C:\Users\admin\AppData\Local\Temp\RKSvr.exe | ComputerDefaults.exe | |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: ODBC Administrator Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 2464 | cmd /c C:\Users\admin\AppData\Local\Temp\\51FADBE.bat | C:\Windows\system32\cmd.exe | — | RKSvr.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) | ||||
| 3248 | net stop wmiapsrv | C:\Windows\system32\net.exe | — | RKSvr.exe |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Net Command Exit code: 2 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 1864 | C:\Windows\system32\net1 stop wmiapsrv | C:\Windows\system32\net1.exe | — | net.exe |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Net Command Exit code: 2 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) | ||||
| 3088 | net start wmiapsrv | C:\Windows\system32\net.exe | — | RKSvr.exe |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Net Command Exit code: 2 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
Total events
61
Read events
61
Write events
0
Delete events
0
Modification events
Executable files
4
Suspicious files
0
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3828 | RKSvr.exe | C:\Users\admin\AppData\Local\Temp\51FADBE.bat | — | |
MD5:— | SHA256:— | |||
| 3828 | RKSvr.exe | C:\Windows\system32\wbem\loadperf.dll | executable | |
MD5:211EDA15468537FBB29049428FD30131 | SHA256:944769DE07F8599FBF4EC1651900D119D5896C85D8AABD694922AC71EBD4FD6F | |||
| 3092 | RKSvr.exe | C:\Users\admin\AppData\Local\Temp\51FADBE.bat | text | |
MD5:55C868FC4E27499D6AC01E9D7DE778E9 | SHA256:5DE4DAEA158EF8491F2D3E5D4C1802D4D9274020E50FACC4B5AE1FE22FBB1292 | |||
| 3092 | RKSvr.exe | C:\Users\admin\AppData\Local\Temp\5etjjJ.Dll | executable | |
MD5:70DA3CC7D0EE2C308D13C0634814D307 | SHA256:28569D1A4E855983EDED8C1E0D83EE9C3D801B8A3DE8FA983027495CA44608E9 | |||
| 3540 | DllHost.exe | C:\Windows\System32\sysprep\dui70.dll | executable | |
MD5:70DA3CC7D0EE2C308D13C0634814D307 | SHA256:28569D1A4E855983EDED8C1E0D83EE9C3D801B8A3DE8FA983027495CA44608E9 | |||
| 3540 | DllHost.exe | C:\Windows\System32\sysprep\ComputerDefaults.exe | executable | |
MD5:7620C8CEB498649D489F6DFF8FA411CB | SHA256:7B44DCD534D38EF2685C4522D301568662CA6E0434E2CE95C0F9D139A2A327B0 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
0
DNS requests
0
Threats
0
HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report