| File name: | krnl_bootstrapper_v3.exe |
| Full analysis: | https://app.any.run/tasks/60666ddf-6396-4156-9c9e-ef63aa97b694 |
| Verdict: | Malicious activity |
| Threats: | A loader is malicious software that infiltrates devices to deliver malicious payloads. This malware is capable of infecting victims’ computers, analyzing their system information, and installing other types of threats, such as trojans or stealers. Criminals usually deliver loaders through phishing emails and links by relying on social engineering to trick users into downloading and running their executables. Loaders employ advanced evasion and persistence tactics to avoid detection. |
| Analysis date: | September 07, 2020, 08:43:51 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (console) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | 699478A1CA098EF74DEBBC71893E3814 |
| SHA1: | B246DE777E1FBF3F0731D4A2504719730A2E233D |
| SHA256: | 296A7F307E25F07CF13C2C75E6565B8D215949BF73B5AB99387A29E1D7DE6241 |
| SSDEEP: | 24576:OhY2gUfVH5XlVYzagW4/3rn0Y5zmzRf1P2MVMgnq5VrnHugIJ96FTx4XclQk:3ENH5X3ngbrnL5yzpVM15VrnOgIqUXc3 |
MALICIOUS
Loads dropped or rewritten executable
- SearchProtocolHost.exe (PID: 2568)
- krnlss.exe (PID: 3796)
Application was dropped or rewritten from another process
- 7za.exe (PID: 3132)
- krnlss.exe (PID: 3796)
Connects to CnC server
- krnl_bootstrapper_v3.exe (PID: 2496)
Downloads executable files from the Internet
- krnl_bootstrapper_v3.exe (PID: 2496)
SUSPICIOUS
Uses IPCONFIG.EXE to discover IP address
- krnl_bootstrapper_v3.exe (PID: 2496)
Executable content was dropped or overwritten
- krnl_bootstrapper_v3.exe (PID: 2496)
- 7za.exe (PID: 3132)
INFO
Reads the hosts file
- krnl_bootstrapper_v3.exe (PID: 2496)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (63.1) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (23.8) |
| .dll | | | Win32 Dynamic Link Library (generic) (5.6) |
| .exe | | | Win32 Executable (generic) (3.8) |
| .exe | | | Generic Win/DOS Executable (1.7) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2053:07:21 17:06:17+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 48 |
| CodeSize: | 1181696 |
| InitializedDataSize: | 190464 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x122702 |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows command line |
| FileVersionNumber: | 1.0.0.0 |
| ProductVersionNumber: | 1.0.0.0 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | krnl_bootstrapper_v3 |
| FileVersion: | 1.0.0.0 |
| InternalName: | krnl_bootstrapper_v3.exe |
| LegalCopyright: | Copyright © 2020 |
| LegalTrademarks: | - |
| OriginalFileName: | krnl_bootstrapper_v3.exe |
| ProductName: | krnl_bootstrapper_v3 |
| ProductVersion: | 1.0.0.0 |
| AssemblyVersion: | 1.0.0.0 |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_CUI |
| Compilation Date: | 15-Jun-1917 08:38:01 |
| Debug artifacts: |
|
| Comments: | - |
| CompanyName: | - |
| FileDescription: | krnl_bootstrapper_v3 |
| FileVersion: | 1.0.0.0 |
| InternalName: | krnl_bootstrapper_v3.exe |
| LegalCopyright: | Copyright © 2020 |
| LegalTrademarks: | - |
| OriginalFilename: | krnl_bootstrapper_v3.exe |
| ProductName: | krnl_bootstrapper_v3 |
| ProductVersion: | 1.0.0.0 |
| Assembly Version: | 1.0.0.0 |
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: | 0x00000080 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 3 |
| Time date stamp: | 15-Jun-1917 08:38:01 |
| 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 | 0x00002000 | 0x00120708 | 0x00120800 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.64379 |
.rsrc | 0x00124000 | 0x0002E4F0 | 0x0002E600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 1.24274 |
.reloc | 0x00154000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.10191 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.00112 | 490 | UNKNOWN | UNKNOWN | RT_MANIFEST |
2 | 2.10543 | 2440 | UNKNOWN | UNKNOWN | RT_ICON |
3 | 1.9881 | 4264 | UNKNOWN | UNKNOWN | RT_ICON |
4 | 1.69507 | 9640 | UNKNOWN | UNKNOWN | RT_ICON |
5 | 1.07419 | 170248 | UNKNOWN | UNKNOWN | RT_ICON |
32512 | 2.88636 | 76 | UNKNOWN | UNKNOWN | RT_GROUP_ICON |
Imports
mscoree.dll |
Total processes
52
Monitored processes
5
Malicious processes
3
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2496 | "C:\Users\admin\Desktop\krnl_bootstrapper_v3.exe" | C:\Users\admin\Desktop\krnl_bootstrapper_v3.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: krnl_bootstrapper_v3 Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 2568 | "C:\Windows\system32\SearchProtocolHost.exe" Global\UsGthrFltPipeMssGthrPipe3_ Global\UsGthrCtrlFltPipeMssGthrPipe3 1 -2147483646 "Software\Microsoft\Windows Search" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT; MS Search 4.0 Robot)" "C:\ProgramData\Microsoft\Search\Data\Temp\usgthrsvc" "DownLevelDaemon" | C:\Windows\System32\SearchProtocolHost.exe | — | SearchIndexer.exe | |||||||||||
User: SYSTEM Company: Microsoft Corporation Integrity Level: SYSTEM Description: Microsoft Windows Search Protocol Host Exit code: 0 Version: 7.00.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3000 | "C:\Windows\System32\ipconfig.exe" /flushdns | C:\Windows\System32\ipconfig.exe | — | krnl_bootstrapper_v3.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: IP Configuration Utility Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3132 | "C:\Users\admin\Desktop\krnl\7za.exe" x "C:\Users\admin\Desktop\krnl\bin\src.7z" -y -o"C:\Users\admin\Desktop\krnl\bin" | C:\Users\admin\Desktop\krnl\7za.exe | krnl_bootstrapper_v3.exe | ||||||||||||
User: admin Company: Igor Pavlov Integrity Level: MEDIUM Description: 7-Zip Standalone Console Exit code: 0 Version: 19.00 Modules
| |||||||||||||||
| 3796 | "C:\Users\admin\Desktop\krnl\krnlss.exe" | C:\Users\admin\Desktop\krnl\krnlss.exe | — | krnl_bootstrapper_v3.exe | |||||||||||
User: admin Integrity Level: MEDIUM Description: krnlss Exit code: 1 Version: 1.0.0.0 Modules
| |||||||||||||||
Total events
475
Read events
442
Write events
33
Delete events
0
Modification events
| (PID) Process: | (2496) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASAPI32 |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (2496) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASAPI32 |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
| (PID) Process: | (2496) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASAPI32 |
| Operation: | write | Name: | FileTracingMask |
Value: 4294901760 | |||
| (PID) Process: | (2496) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASAPI32 |
| Operation: | write | Name: | ConsoleTracingMask |
Value: 4294901760 | |||
| (PID) Process: | (2496) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASAPI32 |
| Operation: | write | Name: | MaxFileSize |
Value: 1048576 | |||
| (PID) Process: | (2496) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASAPI32 |
| Operation: | write | Name: | FileDirectory |
Value: %windir%\tracing | |||
| (PID) Process: | (2496) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASMANCS |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (2496) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASMANCS |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
| (PID) Process: | (2496) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASMANCS |
| Operation: | write | Name: | FileTracingMask |
Value: 4294901760 | |||
| (PID) Process: | (2496) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASMANCS |
| Operation: | write | Name: | ConsoleTracingMask |
Value: 4294901760 | |||
Executable files
136
Suspicious files
3
Text files
42
Unknown types
66
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2496 | krnl_bootstrapper_v3.exe | C:\Users\admin\Desktop\krnl\bin\Monaco\vs\basic-languages\lua\lua.js | text | |
MD5:— | SHA256:— | |||
| 2496 | krnl_bootstrapper_v3.exe | C:\Users\admin\Desktop\krnl\krnl.dll | executable | |
MD5:— | SHA256:— | |||
| 2496 | krnl_bootstrapper_v3.exe | C:\Users\admin\Desktop\krnl\bin\Monaco.zip | compressed | |
MD5:— | SHA256:— | |||
| 2496 | krnl_bootstrapper_v3.exe | C:\Users\admin\Desktop\krnl\bin\Bunifu_UI_v1.5.3.dll | executable | |
MD5:2ECB51AB00C5F340380ECF849291DBCF | SHA256:F1B3E0F2750A9103E46A6A4A34F1CF9D17779725F98042CC2475EC66484801CF | |||
| 2496 | krnl_bootstrapper_v3.exe | C:\Users\admin\Desktop\krnl\bin\Monaco\Monaco.html | html | |
MD5:F872D6BB3D3364428DB47E8DB7050D43 | SHA256:0F4292152A1F55A75E7DE8A5DEF919A7DDACFB9A774FD02C4B82C8FA99715E96 | |||
| 2496 | krnl_bootstrapper_v3.exe | C:\Users\admin\Desktop\krnl\bin\Monaco\vs\editor\contrib\suggest\media\String_inverse_16x.svg | image | |
MD5:6E5C0CE7EC09969F07EA6EE078EF8AD6 | SHA256:7D23C0F30CB9C05C81BB15785A3299772AE3CFBE51F3E04895AA1F23FFBEBA5B | |||
| 2496 | krnl_bootstrapper_v3.exe | C:\Users\admin\Desktop\krnl\7za.exe | executable | |
MD5:43141E85E7C36E31B52B22AB94D5E574 | SHA256:EA308C76A2F927B160A143D94072B0DCE232E04B751F0C6432A94E05164E716D | |||
| 2496 | krnl_bootstrapper_v3.exe | C:\Users\admin\Desktop\krnl\bin\Monaco\vs\editor\editor.main.nls.es.js | text | |
MD5:B371235F971BAA51F58F123F40C4435A | SHA256:203FF3591E02EB7B55A591E53919CC337F8DEA73E6446FC3493227761C0794BA | |||
| 2496 | krnl_bootstrapper_v3.exe | C:\Users\admin\Desktop\krnl\bin\Monaco\vs\base\worker\workerMain.js | text | |
MD5:27EAD90C7702154755785E0E53398755 | SHA256:BDF9433692A08851E13DD58504EEF19F51BD2EC7241923A68EDF5772E0E53AF5 | |||
| 2496 | krnl_bootstrapper_v3.exe | C:\Users\admin\Desktop\krnl\bin\src.7z | — | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
6
TCP/UDP connections
2
DNS requests
1
Threats
8
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
2496 | krnl_bootstrapper_v3.exe | GET | — | 104.31.91.85:8080 | http://cdn.krnl.rocks:8080/files/bin/Bunifu_UI_v1.5.3.dll | US | — | — | malicious |
2496 | krnl_bootstrapper_v3.exe | GET | 200 | 104.31.91.85:8080 | http://cdn.krnl.rocks:8080/files | US | text | 109 b | malicious |
2496 | krnl_bootstrapper_v3.exe | GET | 200 | 104.31.91.85:8080 | http://cdn.krnl.rocks:8080/bootstrapper | US | executable | 1.31 Mb | malicious |
2496 | krnl_bootstrapper_v3.exe | GET | 200 | 104.31.91.85:8080 | http://cdn.krnl.rocks:8080/hashes | US | text | 324 b | malicious |
2496 | krnl_bootstrapper_v3.exe | GET | — | 104.31.91.85:8080 | http://cdn.krnl.rocks:8080/files/krnl.dll | US | — | — | malicious |
2496 | krnl_bootstrapper_v3.exe | GET | 200 | 104.31.91.85:8080 | http://cdn.krnl.rocks:8080/files/bin/Monaco.zip | US | compressed | 641 Kb | malicious |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
2496 | krnl_bootstrapper_v3.exe | 104.31.91.85:8080 | cdn.krnl.rocks | Cloudflare Inc | US | malicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
cdn.krnl.rocks |
| malicious |
Threats
PID | Process | Class | Message |
|---|---|---|---|
2496 | krnl_bootstrapper_v3.exe | Misc activity | ET INFO Packed Executable Download |
2496 | krnl_bootstrapper_v3.exe | Potential Corporate Privacy Violation | ET POLICY PE EXE or DLL Windows file download HTTP |
2496 | krnl_bootstrapper_v3.exe | Potentially Bad Traffic | ET INFO Executable Retrieved With Minimal HTTP Headers - Potential Second Stage Download |
2496 | krnl_bootstrapper_v3.exe | Misc activity | ET INFO EXE - Served Attached HTTP |
2496 | krnl_bootstrapper_v3.exe | Potential Corporate Privacy Violation | ET POLICY PE EXE or DLL Windows file download HTTP |
2496 | krnl_bootstrapper_v3.exe | Potentially Bad Traffic | ET INFO Executable Retrieved With Minimal HTTP Headers - Potential Second Stage Download |
2496 | krnl_bootstrapper_v3.exe | Misc activity | ET INFO EXE - Served Attached HTTP |
1 ETPRO signatures available at the full report