| File name: | subst.exe |
| Full analysis: | https://app.any.run/tasks/c69d1333-3cbe-436f-89d3-98bf4008ff26 |
| Verdict: | Malicious activity |
| Analysis date: | January 24, 2020, 13:31:00 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | MS-DOS executable, MZ for MS-DOS |
| MD5: | B41020AB32BEAF22B2FE6455D58E6BCC |
| SHA1: | B7088F71FDF5CECC89FAC0EFDB56ABAE3E127C28 |
| SHA256: | 2DFFDA6637BBA3BDB934C22B8C3C3907CBF21CFFA4EB250B97AA69A0BFE46218 |
| SSDEEP: | 49152:h9aFKP+m2qPiyAVPpJ36/n3MDTPQS8yhiJUb:h9TWuPiyoPXmnEVkJUb |
MALICIOUS
Loads the Task Scheduler COM API
- subst.exe (PID: 1504)
- DeviceFlows.DataModel.exe (PID: 1520)
SUSPICIOUS
Executable content was dropped or overwritten
- subst.exe (PID: 1504)
Starts CMD.EXE for commands execution
- subst.exe (PID: 1504)
Uses ICACLS.EXE to modify access control list
- cmd.exe (PID: 3728)
Executed via Task Scheduler
- DeviceFlows.DataModel.exe (PID: 1520)
- DeviceFlows.DataModel.exe (PID: 332)
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 (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: | 2020:01:23 19:09:17+01:00 |
| PEType: | PE32 |
| LinkerVersion: | 12 |
| CodeSize: | 581632 |
| InitializedDataSize: | 3835904 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x43d3f8 |
| OSVersion: | 5.1 |
| ImageVersion: | - |
| SubsystemVersion: | 5.1 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 8.1.2.4 |
| ProductVersionNumber: | 8.1.2.4 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (British) |
| CharacterSet: | Unicode |
| Comments: | 7yB49X9P3DSgSXpiVdnxpUB4Pvg4X1hVvb4iskRLk3fZXbW63X3uwolq6v1 |
| CompanyName: | Advanced Windows 32 Base API |
| FileDescription: | BitLocker Certificates Library |
| InternalName: | subst.exe |
| OriginalFileName: | subst.exe |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 23-Jan-2020 18:09:17 |
| Detected languages: |
|
| Comments: | 7yB49X9P3DSgSXpiVdnxpUB4Pvg4X1hVvb4iskRLk3fZXbW63X3uwolq6v1 |
| CompanyName: | Advanced Windows 32 Base API |
| FileDescription: | BitLocker Certificates Library |
| InternalName: | subst.exe |
| OriginalFilename: | subst.exe |
DOS Header
| Magic number: | MZ |
|---|---|
| Bytes on last page of file: | 0x0040 |
| Pages in file: | 0x0001 |
| Relocations: | 0x0000 |
| Size of header: | 0x0002 |
| 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: | 0xB400 |
| OEM information: | 0xCD09 |
| Address of NE header: | 0x00000040 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 3 |
| Time date stamp: | 23-Jan-2020 18:09:17 |
| 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 |
|---|---|---|---|---|---|
.MPRESS1 | 0x00001000 | 0x0043C000 | 0x00216C00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 7.99992 |
.MPRESS2b\x0f | 0x0043D000 | 0x00000F62 | 0x00001000 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 5.85995 |
.rsrc | 0x0043E000 | 0x0001E91C | 0x0001EA00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 5.64817 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.40026 | 1007 | Latin 1 / Western European | English - United Kingdom | RT_MANIFEST |
7 | 0 | 1428 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
8 | 0 | 1674 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
9 | 0 | 1168 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
10 | 0 | 1532 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
11 | 0 | 1628 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
12 | 0 | 1126 | Latin 1 / Western European | English - United Kingdom | RT_STRING |
13 | 5.68058 | 9640 | UNKNOWN | English - United Kingdom | RT_ICON |
14 | 5.59612 | 4264 | UNKNOWN | English - United Kingdom | RT_ICON |
15 | 5.57894 | 1128 | UNKNOWN | English - United Kingdom | RT_ICON |
Imports
ADVAPI32.dll |
COMCTL32.dll |
COMDLG32.dll |
GDI32.dll |
IPHLPAPI.DLL |
KERNEL32.DLL |
MPR.dll |
OLEAUT32.dll |
PSAPI.DLL |
SHELL32.dll |
Total processes
41
Monitored processes
7
Malicious processes
0
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 304 | icacls "C:\ProgramData\amd64_usbxhci.inf.resources_31bf3856ad364e35_10.0.18362.1_ru-ru_91961581a40f83fa" /inheritance:e /deny "*S-1-5-7:(R,REA,RA,RD)" | C:\Windows\system32\icacls.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 332 | C:\ProgramData\amd64_usbxhci.inf.resources_31bf3856ad364e35_10.0.18362.1_ru-ru_91961581a40f83fa\DeviceFlows.DataModel.exe | C:\ProgramData\amd64_usbxhci.inf.resources_31bf3856ad364e35_10.0.18362.1_ru-ru_91961581a40f83fa\DeviceFlows.DataModel.exe | — | taskeng.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 816 | icacls "C:\ProgramData\amd64_usbxhci.inf.resources_31bf3856ad364e35_10.0.18362.1_ru-ru_91961581a40f83fa" /inheritance:e /deny "*S-1-1-0:(R,REA,RA,RD)" | C:\Windows\system32\icacls.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 1504 | "C:\Users\admin\AppData\Local\Temp\subst.exe" | C:\Users\admin\AppData\Local\Temp\subst.exe | explorer.exe | ||||||||||||
User: admin Company: Advanced Windows 32 Base API Integrity Level: MEDIUM Description: BitLocker Certificates Library Exit code: 0 Modules
| |||||||||||||||
| 1520 | C:\ProgramData\amd64_usbxhci.inf.resources_31bf3856ad364e35_10.0.18362.1_ru-ru_91961581a40f83fa\DeviceFlows.DataModel.exe | C:\ProgramData\amd64_usbxhci.inf.resources_31bf3856ad364e35_10.0.18362.1_ru-ru_91961581a40f83fa\DeviceFlows.DataModel.exe | — | taskeng.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 3728 | C:\Windows\system32\cmd.exe /c icacls "C:\ProgramData\amd64_usbxhci.inf.resources_31bf3856ad364e35_10.0.18362.1_ru-ru_91961581a40f83fa" /inheritance:e /deny "*S-1-1-0:(R,REA,RA,RD)" & icacls "C:\ProgramData\amd64_usbxhci.inf.resources_31bf3856ad364e35_10.0.18362.1_ru-ru_91961581a40f83fa" /inheritance:e /deny "*S-1-5-7:(R,REA,RA,RD)" & icacls "C:\ProgramData\amd64_usbxhci.inf.resources_31bf3856ad364e35_10.0.18362.1_ru-ru_91961581a40f83fa" /inheritance:e /deny "admin:(R,REA,RA,RD)" | C:\Windows\system32\cmd.exe | — | subst.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
| |||||||||||||||
| 4068 | icacls "C:\ProgramData\amd64_usbxhci.inf.resources_31bf3856ad364e35_10.0.18362.1_ru-ru_91961581a40f83fa" /inheritance:e /deny "admin:(R,REA,RA,RD)" | C:\Windows\system32\icacls.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
Total events
12
Read events
12
Write events
0
Delete events
0
Modification events
Executable files
1
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 1504 | subst.exe | C:\ProgramData\amd64_usbxhci.inf.resources_31bf3856ad364e35_10.0.18362.1_ru-ru_91961581a40f83fa\DeviceFlows.DataModel.exe | executable | |
MD5:— | SHA256:— | |||
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HTTP(S) requests
0
TCP/UDP connections
0
DNS requests
0
Threats
0
HTTP requests
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