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| File name: | csrss.exe |
| Full analysis: | https://app.any.run/tasks/60ad5b2f-ae41-413d-9ddd-a88112b40b74 |
| Verdict: | Malicious activity |
| Threats: | Ransomware is a type of malicious software that locks users out of their system or data using different methods to force them to pay a ransom. Most often, such programs encrypt files on an infected machine and demand a fee to be paid in exchange for the decryption key. Additionally, such programs can be used to steal sensitive information from the compromised computer and even conduct DDoS attacks against affected organizations to pressure them into paying. |
| Analysis date: | April 15, 2019, 12:51:43 |
| 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: | B82B82BEB62AC4EB418482D9BCB517C2 |
| SHA1: | 3FCBF6EE4A4C917F985ACC78A7B1C05374992E20 |
| SHA256: | 90333748EE4E4C42BBC72B4317AFAF62CA23FF018B356FB0B92CAC1648B1144D |
| SSDEEP: | 24576:6Dbt4YcxdNDjJQqRTE0cZLx4bcWS5PcQV3D14EAKXtRutF3dF7D:61yDNXS2T+4c9cQVxnXtIr3T |
MALICIOUS
Changes the autorun value in the registry
- csrss.exe (PID: 1928)
TROLDESH was detected
- csrss.exe (PID: 1928)
SUSPICIOUS
Executable content was dropped or overwritten
- csrss.exe (PID: 1928)
Creates files in the program directory
- csrss.exe (PID: 1928)
INFO
No info indicators.
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win64 Executable (generic) (64.6) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (15.4) |
| .exe | | | Win32 Executable (generic) (10.5) |
| .exe | | | Generic Win/DOS Executable (4.6) |
| .exe | | | DOS Executable Generic (4.6) |
EXIF
EXE
| ProductVersion: | 7.0.40.20 |
|---|---|
| ProductName: | Java(TM) Platform SE 7 U4 |
| OriginalFileName: | kinit.exe |
| LegalCopyright: | Copyright © 2012 |
| InternalName: | kinit |
| FullVersion: | 1.7.0_04-b20 |
| FileVersion: | 7.0.40.20 |
| FileDescription: | Java(TM) Platform SE binary |
| CompanyName: | Oracle Corporation |
| CharacterSet: | Unicode |
| LanguageCode: | Neutral |
| FileSubtype: | - |
| ObjectFileType: | Executable application |
| FileOS: | Win32 |
| FileFlags: | (none) |
| FileFlagsMask: | 0x003f |
| ProductVersionNumber: | 7.0.40.20 |
| FileVersionNumber: | 7.0.40.20 |
| Subsystem: | Windows GUI |
| SubsystemVersion: | 5 |
| ImageVersion: | - |
| OSVersion: | 5 |
| EntryPoint: | 0x1f20 |
| UninitializedDataSize: | - |
| InitializedDataSize: | 42496 |
| CodeSize: | 1123328 |
| LinkerVersion: | 9 |
| PEType: | PE32 |
| TimeStamp: | 2019:03:19 00:10:42+01:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 18-Mar-2019 23:10:42 |
| Detected languages: |
|
| CompanyName: | Oracle Corporation |
| FileDescription: | Java(TM) Platform SE binary |
| FileVersion: | 7.0.40.20 |
| Full Version: | 1.7.0_04-b20 |
| InternalName: | kinit |
| LegalCopyright: | Copyright © 2012 |
| OriginalFilename: | kinit.exe |
| ProductName: | Java(TM) Platform SE 7 U4 |
| ProductVersion: | 7.0.40.20 |
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: | 0x000000D0 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 4 |
| Time date stamp: | 18-Mar-2019 23:10:42 |
| 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 | 0x001122B1 | 0x00112400 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.97007 |
.rdata | 0x00114000 | 0x000094A0 | 0x00009600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 3.36523 |
.data | 0x0011E000 | 0x0000058C | 0x00000600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 3.66374 |
.rsrc | 0x0011F000 | 0x000E8948 | 0x00000A00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.74115 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 3.43701 | 816 | UNKNOWN | UNKNOWN | RT_VERSION |
Imports
ADVAPI32.dll |
KERNEL32.dll |
SHELL32.dll |
USER32.dll |
Total processes
32
Monitored processes
1
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 1928 | "C:\Users\admin\AppData\Local\Temp\csrss.exe" | C:\Users\admin\AppData\Local\Temp\csrss.exe | explorer.exe | |
User: admin Company: Oracle Corporation Integrity Level: MEDIUM Description: Java(TM) Platform SE binary Version: 7.0.40.20 | ||||
Total events
31
Read events
28
Write events
3
Delete events
0
Modification events
| (PID) Process: | (1928) csrss.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\System32\Configuration |
| Operation: | write | Name: | xi |
Value: 906D0F2E2F604F839E04 | |||
| (PID) Process: | (1928) csrss.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | Client Server Runtime Subsystem |
Value: "C:\ProgramData\Windows\csrss.exe" | |||
| (PID) Process: | (1928) csrss.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\System32\Configuration |
| Operation: | write | Name: | xVersion |
Value: 4.0.0.1 | |||
Executable files
1
Suspicious files
0
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 1928 | csrss.exe | C:\Users\admin\AppData\Local\Temp\6893A5D897\state.tmp | — | |
MD5:— | SHA256:— | |||
| 1928 | csrss.exe | C:\ProgramData\Windows\csrss.exe | executable | |
MD5:B82B82BEB62AC4EB418482D9BCB517C2 | SHA256:90333748EE4E4C42BBC72B4317AFAF62CA23FF018B356FB0B92CAC1648B1144D | |||
| 1928 | csrss.exe | C:\Users\admin\AppData\Local\Temp\6893A5~1\state | text | |
MD5:E549846F8F0E533C9D1F523074425993 | SHA256:AC02B627AA78726387F00EDF2F6731B0E0A7C5FE427C96F6A425C7A996770C25 | |||
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HTTP(S) requests
0
TCP/UDP connections
1
DNS requests
0
Threats
0
HTTP requests
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Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
1928 | csrss.exe | 154.35.32.5:443 | — | Rethem Hosting LLC | US | suspicious |