File name: | csrss.exe |
Full analysis: | https://app.any.run/tasks/cebd9e47-9f57-457c-8e31-f43aae0d66f8 |
Verdict: | Malicious activity |
Threats: | Quasar is a very popular RAT in the world thanks to its code being available in open-source. This malware can be used to control the victim’s computer remotely. |
Analysis date: | March 21, 2019, 15:21:01 |
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: | 1702EC9EE5F0B96169FEAA299D116B0C |
SHA1: | 2E16C0C4DB50EC7E781AC0F0CF3F7FBA8C8D49A4 |
SHA256: | 27C8E82152F2E6FB820A43D00A1DB17B04BD9210CC35D2157F6A80D38B061BCA |
SSDEEP: | 12288:lrg1oKbWdecWhjzEbcrPIcd+h7vVmgCxksjrdrZ116EStU4iO/htDNNbBujZtXQ:By/O7Wa8PF0nEXj116XtiO5tnbBOQ |
.exe | | | Win32 Executable Delphi generic (37.4) |
---|---|---|
.scr | | | Windows screen saver (34.5) |
.exe | | | Win32 Executable (generic) (11.9) |
.exe | | | Win16/32 Executable Delphi generic (5.4) |
.exe | | | Generic Win/DOS Executable (5.2) |
MachineType: | Intel 386 or later, and compatibles |
---|---|
TimeStamp: | 1992:04:08 17:43:39+02:00 |
PEType: | PE32 |
LinkerVersion: | 2.25 |
CodeSize: | 499712 |
InitializedDataSize: | 622592 |
UninitializedDataSize: | - |
EntryPoint: | 0x7af84 |
OSVersion: | 4 |
ImageVersion: | - |
SubsystemVersion: | 4 |
Subsystem: | Windows GUI |
Architecture: | IMAGE_FILE_MACHINE_I386 |
---|---|
Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
Compilation Date: | 08-Apr-1992 15:43:39 |
Detected languages: |
|
Magic number: | MZ |
---|---|
Bytes on last page of file: | 0x0050 |
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: | 0x00B8 |
Checksum: | 0x0000 |
Initial IP value: | 0x0000 |
Initial CS value: | 0x0000 |
Overlay number: | 0x001A |
OEM identifier: | 0x0000 |
OEM information: | 0x0000 |
Address of NE header: | 0x00000100 |
Signature: | PE |
---|---|
Machine: | IMAGE_FILE_MACHINE_I386 |
Number of sections: | 8 |
Time date stamp: | 08-Apr-1992 15:43:39 |
Pointer to Symbol Table: | 0x00000000 |
Number of symbols: | 0 |
Size of Optional Header: | 0x00E0 |
Characteristics: |
|
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
---|---|---|---|---|---|
CODE | 0x00001000 | 0x00079FCC | 0x0007A000 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.54919 |
DATA | 0x0007B000 | 0x0000F2EC | 0x0000F400 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 3.39797 |
BSS | 0x0008B000 | 0x00000EED | 0x00000000 | IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0 |
.idata | 0x0008C000 | 0x00002544 | 0x00002600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 4.9886 |
.tls | 0x0008F000 | 0x00000010 | 0x00000000 | IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0 |
.rdata | 0x00090000 | 0x00000018 | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_SHARED | 0.191963 |
.reloc | 0x00091000 | 0x00009780 | 0x00009800 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_SHARED | 6.64943 |
.rsrc | 0x0009B000 | 0x0007CA8C | 0x0007CC00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_SHARED | 7.15465 |
Title | Entropy | Size | Codepage | Language | Type |
---|---|---|---|---|---|
1 | 2.6633 | 308 | Latin 1 / Western European | UNKNOWN | RT_CURSOR |
2 | 2.80231 | 308 | Latin 1 / Western European | UNKNOWN | RT_CURSOR |
3 | 3.00046 | 308 | Latin 1 / Western European | UNKNOWN | RT_CURSOR |
4 | 2.56318 | 308 | Latin 1 / Western European | UNKNOWN | RT_CURSOR |
5 | 2.6949 | 308 | Latin 1 / Western European | UNKNOWN | RT_CURSOR |
6 | 2.62527 | 308 | Latin 1 / Western European | UNKNOWN | RT_CURSOR |
7 | 2.91604 | 308 | Latin 1 / Western European | UNKNOWN | RT_CURSOR |
1000 | 5.11605 | 163 | Latin 1 / Western European | English - United States | RT_STRING |
1091 | 7.35273 | 5899 | Latin 1 / Western European | English - United States | RT_BITMAP |
1092 | 7.49201 | 5899 | Latin 1 / Western European | English - United States | RT_BITMAP |
advapi32.dll |
comctl32.dll |
comdlg32.dll |
gdi32.dll |
kernel32.dll |
ole32.dll |
oleaut32.dll |
user32.dll |
version.dll |
PID | CMD | Path | Indicators | Parent process |
---|---|---|---|---|
588 | "C:\Users\admin\AppData\Local\Temp\csrss.exe" | C:\Users\admin\AppData\Local\Temp\csrss.exe | — | explorer.exe |
User: admin Integrity Level: MEDIUM Exit code: 0 | ||||
2096 | "C:\Users\admin\AppData\Local\Temp\csrss.exe" | C:\Users\admin\AppData\Local\Temp\csrss.exe | csrss.exe | |
User: admin Integrity Level: MEDIUM Exit code: 0 |
(PID) Process: | (2096) csrss.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\csrss_RASAPI32 |
Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
(PID) Process: | (2096) csrss.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\csrss_RASAPI32 |
Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
(PID) Process: | (2096) csrss.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\csrss_RASAPI32 |
Operation: | write | Name: | FileTracingMask |
Value: 4294901760 | |||
(PID) Process: | (2096) csrss.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\csrss_RASAPI32 |
Operation: | write | Name: | ConsoleTracingMask |
Value: 4294901760 | |||
(PID) Process: | (2096) csrss.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\csrss_RASAPI32 |
Operation: | write | Name: | MaxFileSize |
Value: 1048576 | |||
(PID) Process: | (2096) csrss.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\csrss_RASAPI32 |
Operation: | write | Name: | FileDirectory |
Value: %windir%\tracing | |||
(PID) Process: | (2096) csrss.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\csrss_RASMANCS |
Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
(PID) Process: | (2096) csrss.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\csrss_RASMANCS |
Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
(PID) Process: | (2096) csrss.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\csrss_RASMANCS |
Operation: | write | Name: | FileTracingMask |
Value: 4294901760 | |||
(PID) Process: | (2096) csrss.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\csrss_RASMANCS |
Operation: | write | Name: | ConsoleTracingMask |
Value: 4294901760 |
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
---|---|---|---|---|---|---|---|---|---|
2096 | csrss.exe | GET | 200 | 185.194.141.58:80 | http://ip-api.com/json/ | DE | text | 253 b | shared |
PID | Process | IP | Domain | ASN | CN | Reputation |
---|---|---|---|---|---|---|
2096 | csrss.exe | 185.194.141.58:80 | ip-api.com | netcup GmbH | DE | unknown |
Domain | IP | Reputation |
---|---|---|
ip-api.com |
| shared |
PID | Process | Class | Message |
---|---|---|---|
2096 | csrss.exe | Potential Corporate Privacy Violation | ET POLICY External IP Lookup ip-api.com |
2096 | csrss.exe | A Network Trojan was detected | MALWARE [PTsecurity] Quasar 1.3 RAT IP Lookup ip-api.com (HTTP headeer) |