| File name: | Byr723V3Cq1.exe |
| Full analysis: | https://app.any.run/tasks/fc6fed77-03ae-43b3-a582-c4b664f8c091 |
| Verdict: | Malicious activity |
| Analysis date: | March 30, 2024, 20:24:05 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | MS-DOS executable PE32 executable (GUI) Intel 80386, for MS Windows, MZ for MS-DOS |
| MD5: | EFF464FFCDEC7985E2912C4C92112580 |
| SHA1: | 686A648D5C02178E8452FBEB244D225C4DF27FF7 |
| SHA256: | 0998E0635C6E9E3159025204BF37907DE577A44A3B7E1F813B73F6B4AC90240A |
| SSDEEP: | 98304:XW4f/XiMRtiakiJRrIqvybgD4MfyBk7dq48sSs5Y48mmyIiBceWNP/X+0+YzJXXG:vj8qYSkc0oPL |
MALICIOUS
Drops the executable file immediately after the start
- Byr723V3Cq1.exe (PID: 2292)
- icsys.icn.exe (PID: 2420)
- explorer.exe (PID: 2208)
- spoolsv.exe (PID: 3488)
Changes the autorun value in the registry
- svchost.exe (PID: 1348)
- explorer.exe (PID: 2208)
Changes appearance of the Explorer extensions
- explorer.exe (PID: 2208)
- svchost.exe (PID: 1348)
SUSPICIOUS
Reads the BIOS version
- Byr723V3Cq1.exe (PID: 2292)
- icsys.icn.exe (PID: 2420)
- spoolsv.exe (PID: 3488)
- svchost.exe (PID: 1348)
- explorer.exe (PID: 2208)
- spoolsv.exe (PID: 1824)
Starts itself from another location
- Byr723V3Cq1.exe (PID: 2292)
- icsys.icn.exe (PID: 2420)
- spoolsv.exe (PID: 3488)
- explorer.exe (PID: 2208)
- svchost.exe (PID: 1348)
The process creates files with name similar to system file names
- icsys.icn.exe (PID: 2420)
- spoolsv.exe (PID: 3488)
INFO
Checks supported languages
- Byr723V3Cq1.exe (PID: 2292)
- icsys.icn.exe (PID: 2420)
- spoolsv.exe (PID: 3488)
- svchost.exe (PID: 1348)
- explorer.exe (PID: 2208)
- spoolsv.exe (PID: 1824)
Process checks whether UAC notifications are on
- Byr723V3Cq1.exe (PID: 2292)
- icsys.icn.exe (PID: 2420)
- svchost.exe (PID: 1348)
- spoolsv.exe (PID: 3488)
- explorer.exe (PID: 2208)
- spoolsv.exe (PID: 1824)
Reads the machine GUID from the registry
- Byr723V3Cq1.exe (PID: 2292)
- icsys.icn.exe (PID: 2420)
- spoolsv.exe (PID: 3488)
- explorer.exe (PID: 2208)
- spoolsv.exe (PID: 1824)
- svchost.exe (PID: 1348)
Create files in a temporary directory
- Byr723V3Cq1.exe (PID: 2292)
- icsys.icn.exe (PID: 2420)
- spoolsv.exe (PID: 3488)
- explorer.exe (PID: 2208)
- spoolsv.exe (PID: 1824)
- svchost.exe (PID: 1348)
Reads the computer name
- svchost.exe (PID: 1348)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win32 Executable (generic) (52.9) |
|---|---|---|
| .exe | | | Generic Win/DOS Executable (23.5) |
| .exe | | | DOS Executable Generic (23.5) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2013:04:01 07:08:22+00:00 |
| ImageFileCharacteristics: | No relocs, Executable, No line numbers, No symbols, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 6 |
| CodeSize: | 106496 |
| InitializedDataSize: | 12288 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x3d8058 |
| OSVersion: | 4 |
| ImageVersion: | 1 |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 1.0.0.0 |
| ProductVersionNumber: | 1.0.0.0 |
| FileFlagsMask: | 0x0000 |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Unicode |
| ProductName: | Project1 |
| FileVersion: | 1 |
| ProductVersion: | 1 |
| InternalName: | TJprojMain |
| OriginalFileName: | TJprojMain.exe |
Total processes
47
Monitored processes
8
Malicious processes
5
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1348 | c:\windows\resources\svchost.exe | C:\Windows\resources\svchost.exe | spoolsv.exe | ||||||||||||
User: admin Integrity Level: HIGH Version: 1.00 Modules
| |||||||||||||||
| 1824 | c:\windows\resources\spoolsv.exe PR | C:\Windows\resources\spoolsv.exe | — | svchost.exe | |||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Version: 1.00 Modules
| |||||||||||||||
| 1928 | schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 20:26 /f | C:\Windows\System32\schtasks.exe | — | svchost.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
| |||||||||||||||
| 2120 | "C:\Users\admin\AppData\Local\Temp\Byr723V3Cq1.exe" | C:\Users\admin\AppData\Local\Temp\Byr723V3Cq1.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 3221226540 Version: 1.00 Modules
| |||||||||||||||
| 2208 | c:\windows\resources\themes\explorer.exe | C:\Windows\resources\Themes\explorer.exe | icsys.icn.exe | ||||||||||||
User: admin Integrity Level: HIGH Version: 1.00 Modules
| |||||||||||||||
| 2292 | "C:\Users\admin\AppData\Local\Temp\Byr723V3Cq1.exe" | C:\Users\admin\AppData\Local\Temp\Byr723V3Cq1.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Version: 1.00 Modules
| |||||||||||||||
| 2420 | C:\Windows\Resources\Themes\icsys.icn.exe | C:\Windows\Resources\Themes\icsys.icn.exe | — | Byr723V3Cq1.exe | |||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Version: 1.00 Modules
| |||||||||||||||
| 3488 | c:\windows\resources\spoolsv.exe SE | C:\Windows\resources\spoolsv.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Version: 1.00 Modules
| |||||||||||||||
Total events
447
Read events
434
Write events
9
Delete events
4
Modification events
| (PID) Process: | (2292) Byr723V3Cq1.exe | Key: | HKEY_CURRENT_USER\Software\VB and VBA Program Settings\Explorer\Process |
| Operation: | write | Name: | LO |
Value: 1 | |||
| (PID) Process: | (2420) icsys.icn.exe | Key: | HKEY_CURRENT_USER\Software\VB and VBA Program Settings\Explorer\Process |
| Operation: | write | Name: | LO |
Value: 1 | |||
| (PID) Process: | (2208) explorer.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce |
| Operation: | write | Name: | Explorer |
Value: c:\windows\resources\themes\explorer.exe RO | |||
| (PID) Process: | (2208) explorer.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce |
| Operation: | write | Name: | Svchost |
Value: c:\windows\resources\svchost.exe RO | |||
| (PID) Process: | (2208) explorer.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | delete value | Name: | Explorer |
Value: | |||
| (PID) Process: | (2208) explorer.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | delete value | Name: | Svchost |
Value: | |||
| (PID) Process: | (1348) svchost.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce |
| Operation: | write | Name: | Explorer |
Value: c:\windows\resources\themes\explorer.exe RO | |||
| (PID) Process: | (1348) svchost.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce |
| Operation: | write | Name: | Svchost |
Value: c:\windows\resources\svchost.exe RO | |||
| (PID) Process: | (1348) svchost.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | delete value | Name: | Explorer |
Value: | |||
| (PID) Process: | (1348) svchost.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | delete value | Name: | Svchost |
Value: | |||
Executable files
5
Suspicious files
0
Text files
0
Unknown types
3
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2292 | Byr723V3Cq1.exe | C:\Windows\Resources\Themes\icsys.icn.exe | executable | |
MD5:— | SHA256:— | |||
| 2292 | Byr723V3Cq1.exe | C:\users\admin\appdata\local\temp\byr723v3cq1.exe | executable | |
MD5:— | SHA256:— | |||
| 2420 | icsys.icn.exe | C:\windows\resources\themes\explorer.exe | executable | |
MD5:— | SHA256:— | |||
| 2208 | explorer.exe | C:\windows\resources\spoolsv.exe | executable | |
MD5:— | SHA256:— | |||
| 3488 | spoolsv.exe | C:\windows\resources\svchost.exe | executable | |
MD5:— | SHA256:— | |||
| 1824 | spoolsv.exe | C:\Users\admin\AppData\Local\Temp\~DFEE8EE0BF24DD8F8B.TMP | binary | |
MD5:— | SHA256:— | |||
| 3488 | spoolsv.exe | C:\Users\admin\AppData\Local\Temp\~DF4EF0EB668DFB5ADF.TMP | — | |
MD5:— | SHA256:— | |||
| 2420 | icsys.icn.exe | C:\Users\admin\AppData\Local\Temp\~DF12E4E188487E7401.TMP | binary | |
MD5:— | SHA256:— | |||
| 2292 | Byr723V3Cq1.exe | C:\Users\admin\AppData\Local\Temp\~DF4C88BEE8C985C2D9.TMP | binary | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
4
DNS requests
0
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 |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
— | — | 224.0.0.252:5355 | — | — | — | unknown |
1080 | svchost.exe | 224.0.0.252:5355 | — | — | — | unknown |