| File name: | krnl_bootstrapper_v3.exe |
| Full analysis: | https://app.any.run/tasks/7c92167c-e3de-4969-80bb-76dcc10f11fe |
| 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 25, 2020, 14:56:08 |
| 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: | FF28CAC84B1CFEAAE4457CEA2BEAF117 |
| SHA1: | D0D45BA39F45020879E404DF701470BDF0309A13 |
| SHA256: | B3A7EE4B2BB28E8532626CCEE4159B0991424F6CECC4799388AEF386B2717954 |
| SSDEEP: | 24576:yhY2gUfVH5XlVYzagW4/3rn0Y5zmzRf1P2MVMgnq5VrnHugIJ96FTx4XclQg:LENH5X3ngbrnL5yzpVM15VrnOgIqUXcD |
| .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) |
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2071:04:21 16:57:52+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 48 |
| CodeSize: | 1182208 |
| InitializedDataSize: | 190464 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x122916 |
| 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 |
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_CUI |
| Compilation Date: | 16-Mar-1935 08:29:36 |
| 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 |
| 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 |
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 3 |
| Time date stamp: | 16-Mar-1935 08:29:36 |
| Pointer to Symbol Table: | 0x00000000 |
| Number of symbols: | 0 |
| Size of Optional Header: | 0x00E0 |
| Characteristics: |
|
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
.text | 0x00002000 | 0x0012091C | 0x00120A00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.64392 |
.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 |
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 |
mscoree.dll |
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1204 | "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
| |||||||||||||||
| 2512 | "C:\Users\admin\AppData\Local\Temp\krnl_bootstrapper_v3.exe" | C:\Users\admin\AppData\Local\Temp\krnl_bootstrapper_v3.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: krnl_bootstrapper_v3 Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| (PID) Process: | (2512) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASAPI32 |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (2512) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASAPI32 |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
| (PID) Process: | (2512) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASAPI32 |
| Operation: | write | Name: | FileTracingMask |
Value: 4294901760 | |||
| (PID) Process: | (2512) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASAPI32 |
| Operation: | write | Name: | ConsoleTracingMask |
Value: 4294901760 | |||
| (PID) Process: | (2512) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASAPI32 |
| Operation: | write | Name: | MaxFileSize |
Value: 1048576 | |||
| (PID) Process: | (2512) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASAPI32 |
| Operation: | write | Name: | FileDirectory |
Value: %windir%\tracing | |||
| (PID) Process: | (2512) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASMANCS |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (2512) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASMANCS |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
| (PID) Process: | (2512) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASMANCS |
| Operation: | write | Name: | FileTracingMask |
Value: 4294901760 | |||
| (PID) Process: | (2512) krnl_bootstrapper_v3.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\krnl_bootstrapper_v3_RASMANCS |
| Operation: | write | Name: | ConsoleTracingMask |
Value: 4294901760 | |||
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2512 | krnl_bootstrapper_v3.exe | C:\Users\admin\AppData\Local\Temp\krnl\krnlss.exe | executable | |
MD5:— | SHA256:— | |||
| 2512 | krnl_bootstrapper_v3.exe | C:\Users\admin\AppData\Local\Temp\krnl_bootstrapper_v3.exe | executable | |
MD5:— | SHA256:— | |||
| 2512 | krnl_bootstrapper_v3.exe | C:\Users\admin\AppData\Local\Temp\krnl\bin\Monaco\vs\basic-languages\lua\lua.js | text | |
MD5:— | SHA256:— | |||
| 2512 | krnl_bootstrapper_v3.exe | C:\Users\admin\AppData\Local\Temp\krnl\bin\Monaco.zip | compressed | |
MD5:— | SHA256:— | |||
| 2512 | krnl_bootstrapper_v3.exe | C:\Users\admin\AppData\Local\Temp\krnl\krnl.dll | executable | |
MD5:— | SHA256:— | |||
| 2512 | krnl_bootstrapper_v3.exe | C:\Users\admin\AppData\Local\Temp\krnl\7za.exe | executable | |
MD5:43141E85E7C36E31B52B22AB94D5E574 | SHA256:EA308C76A2F927B160A143D94072B0DCE232E04B751F0C6432A94E05164E716D | |||
| 2512 | krnl_bootstrapper_v3.exe | C:\Users\admin\AppData\Local\Temp\krnl\bin\ScintillaNET.dll | executable | |
MD5:9166536C31F4E725E6BEFE85E2889A4B | SHA256:AD0CC5A4D4A6AAE06EE360339C851892B74B8A275CE89C1B48185672179F3163 | |||
| 2512 | krnl_bootstrapper_v3.exe | C:\Users\admin\AppData\Local\Temp\krnl\bin\Bunifu_UI_v1.5.3.dll | executable | |
MD5:2ECB51AB00C5F340380ECF849291DBCF | SHA256:F1B3E0F2750A9103E46A6A4A34F1CF9D17779725F98042CC2475EC66484801CF | |||
| 2512 | krnl_bootstrapper_v3.exe | C:\Users\admin\AppData\Local\Temp\krnl\bin\Monaco\vs\editor\contrib\suggest\media\String_16x.svg | image | |
MD5:48E754CB54C78A85DCC9AAEA9A27847E | SHA256:D1AA361F33564E8F9D527A01A66C7CE35D73F23417432E80DDF51F562770EE79 | |||
| 2512 | krnl_bootstrapper_v3.exe | C:\Users\admin\AppData\Local\Temp\krnl\bin\Monaco\vs\editor\contrib\suggest\media\String_inverse_16x.svg | image | |
MD5:6E5C0CE7EC09969F07EA6EE078EF8AD6 | SHA256:7D23C0F30CB9C05C81BB15785A3299772AE3CFBE51F3E04895AA1F23FFBEBA5B | |||
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
2512 | krnl_bootstrapper_v3.exe | GET | — | 172.67.204.205:8080 | http://cdn.krnl.rocks:8080/files/krnl.dll | US | — | — | malicious |
2512 | krnl_bootstrapper_v3.exe | GET | — | 172.67.204.205:8080 | http://cdn.krnl.rocks:8080/files/bin/Bunifu_UI_v1.5.3.dll | US | — | — | malicious |
2512 | krnl_bootstrapper_v3.exe | GET | — | 172.67.204.205:8080 | http://cdn.krnl.rocks:8080/files/krnlss.exe.config | US | — | — | malicious |
2512 | krnl_bootstrapper_v3.exe | GET | — | 172.67.204.205:8080 | http://cdn.krnl.rocks:8080/files/bin/ScintillaNET.dll | US | — | — | malicious |
2512 | krnl_bootstrapper_v3.exe | GET | 200 | 172.67.204.205:8080 | http://cdn.krnl.rocks:8080/bootstrapper | US | executable | 1.31 Mb | malicious |
2512 | krnl_bootstrapper_v3.exe | GET | 200 | 172.67.204.205:8080 | http://cdn.krnl.rocks:8080/files | US | text | 109 b | malicious |
2512 | krnl_bootstrapper_v3.exe | GET | 200 | 172.67.204.205:8080 | http://cdn.krnl.rocks:8080/hashes | US | text | 324 b | malicious |
2512 | krnl_bootstrapper_v3.exe | GET | 200 | 172.67.204.205:8080 | http://cdn.krnl.rocks:8080/files/bin/Monaco.zip | US | compressed | 641 Kb | malicious |
2512 | krnl_bootstrapper_v3.exe | GET | 200 | 172.67.204.205:8080 | http://cdn.krnl.rocks:8080/files/krnlss.exe | US | executable | 1.21 Mb | malicious |
2512 | krnl_bootstrapper_v3.exe | GET | 200 | 172.67.204.205:8080 | http://cdn.krnl.rocks:8080/files/bin/src.7z | US | executable | 1.30 Mb | malicious |
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
2512 | krnl_bootstrapper_v3.exe | 172.67.204.205:8080 | cdn.krnl.rocks | — | US | malicious |
Domain | IP | Reputation |
|---|---|---|
cdn.krnl.rocks |
| malicious |
PID | Process | Class | Message |
|---|---|---|---|
2512 | krnl_bootstrapper_v3.exe | Potential Corporate Privacy Violation | ET POLICY PE EXE or DLL Windows file download HTTP |
2512 | krnl_bootstrapper_v3.exe | Potentially Bad Traffic | ET INFO Executable Retrieved With Minimal HTTP Headers - Potential Second Stage Download |
2512 | krnl_bootstrapper_v3.exe | Misc activity | ET INFO EXE - Served Attached HTTP |
2512 | krnl_bootstrapper_v3.exe | Potential Corporate Privacy Violation | ET POLICY PE EXE or DLL Windows file download HTTP |
2512 | krnl_bootstrapper_v3.exe | Potentially Bad Traffic | ET INFO Executable Retrieved With Minimal HTTP Headers - Potential Second Stage Download |
2512 | krnl_bootstrapper_v3.exe | Misc activity | ET INFO EXE - Served Attached HTTP |
2512 | krnl_bootstrapper_v3.exe | Misc activity | ET INFO Packed Executable Download |
2512 | krnl_bootstrapper_v3.exe | Misc activity | ET INFO Packed Executable Download |