| File name: | mbrcheck.exe |
| Full analysis: | https://app.any.run/tasks/437e8fdc-697f-437f-82e7-5bc931d96b6c |
| Verdict: | Malicious activity |
| Analysis date: | July 22, 2024, 07:09:57 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (console) Intel 80386, for MS Windows |
| MD5: | 36CFE1D793273923CD2CEC731A3B594E |
| SHA1: | 68F8F45B68AE6068F2DF09AAD4881B73E8CD6876 |
| SHA256: | E26832D5FAD6578AA87D05124680C7575046E4817B55AAB6A59DF9AA3DF7171C |
| SSDEEP: | 384:OpN6JdpG6bpBosusWJG2q9827glWO7ExJ:OEdpG6bpBoscJ3/37KJ |
| .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) |
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2024:07:22 07:03:23+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 14.4 |
| CodeSize: | 11264 |
| InitializedDataSize: | 8704 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x2c3d |
| OSVersion: | 6 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows command line |
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1032 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | mbrcheck.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 1328 | C:\WINDOWS\system32\reg.exe QUERY HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\http\UserChoice /v ProgId | C:\Windows\SysWOW64\reg.exe | — | Skype.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Registry Console Tool Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2116 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | reg.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2360 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | reg.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2648 | "C:\Users\admin\Desktop\mbrcheck.exe" | C:\Users\admin\Desktop\mbrcheck.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 2860 | "C:\Program Files (x86)\Microsoft\Skype for Desktop\Skype.exe" --type=renderer --user-data-dir="C:\Users\admin\AppData\Roaming\Microsoft\Skype for Desktop" --app-user-model-id=Microsoft.Skype.SkypeDesktop --app-path="C:\Program Files (x86)\Microsoft\Skype for Desktop\resources\app.asar" --no-sandbox --no-zygote --autoplay-policy=no-user-gesture-required --disable-background-timer-throttling --ms-disable-indexeddb-transaction-timeout --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=4 --mojo-platform-channel-handle=2808 --field-trial-handle=2172,i,9684529185201972620,2032936423004902593,131072 --enable-features=WinUseBrowserSpellChecker,WinUseHybridSpellChecker,WinrtGeolocationImplementation --disable-features=SpareRendererForSitePerProcess,WinRetrieveSuggestionsOnlyOnDemand --skype-process-type=Main --skype-window-id=__MAIN_ROOT_VIEW_ID__ /prefetch:1 | C:\Program Files (x86)\Microsoft\Skype for Desktop\Skype.exe | — | Skype.exe | |||||||||||
User: admin Company: Skype Technologies S.A. Integrity Level: MEDIUM Description: Skype Version: 8.104.0.207 Modules
| |||||||||||||||
| 2996 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | reg.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 3152 | "C:\Program Files (x86)\Microsoft\Skype for Desktop\Skype.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --user-data-dir="C:\Users\admin\AppData\Roaming\Microsoft\Skype for Desktop" --mojo-platform-channel-handle=2468 --field-trial-handle=2172,i,9684529185201972620,2032936423004902593,131072 --enable-features=WinUseBrowserSpellChecker,WinUseHybridSpellChecker,WinrtGeolocationImplementation --disable-features=SpareRendererForSitePerProcess,WinRetrieveSuggestionsOnlyOnDemand /prefetch:8 | C:\Program Files (x86)\Microsoft\Skype for Desktop\Skype.exe | Skype.exe | ||||||||||||
User: admin Company: Skype Technologies S.A. Integrity Level: MEDIUM Description: Skype Version: 8.104.0.207 Modules
| |||||||||||||||
| 3444 | "C:\Program Files (x86)\Microsoft\Skype for Desktop\Skype.exe" --type=renderer --user-data-dir="C:\Users\admin\AppData\Roaming\Microsoft\Skype for Desktop" --app-user-model-id=Microsoft.Skype.SkypeDesktop --app-path="C:\Program Files (x86)\Microsoft\Skype for Desktop\resources\app.asar" --no-sandbox --no-zygote --enable-blink-features --disable-blink-features --autoplay-policy=no-user-gesture-required --disable-background-timer-throttling --ms-disable-indexeddb-transaction-timeout --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=4144 --field-trial-handle=2172,i,9684529185201972620,2032936423004902593,131072 --enable-features=WinUseBrowserSpellChecker,WinUseHybridSpellChecker,WinrtGeolocationImplementation --disable-features=SpareRendererForSitePerProcess,WinRetrieveSuggestionsOnlyOnDemand /prefetch:1 | C:\Program Files (x86)\Microsoft\Skype for Desktop\Skype.exe | — | Skype.exe | |||||||||||
User: admin Company: Skype Technologies S.A. Integrity Level: MEDIUM Description: Skype Version: 8.104.0.207 Modules
| |||||||||||||||
| 4752 | C:\WINDOWS\system32\reg.exe ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "Skype for Desktop" /t REG_SZ /d "C:\Program Files (x86)\Microsoft\Skype for Desktop\Skype.exe" /f | C:\Windows\SysWOW64\reg.exe | Skype.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Registry Console Tool Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| (PID) Process: | (4752) reg.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | Skype for Desktop |
Value: C:\Program Files (x86)\Microsoft\Skype for Desktop\Skype.exe | |||
| (PID) Process: | (7036) Skype.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Spelling\Dictionaries |
| Operation: | delete value | Name: | en-US |
Value: | |||
| (PID) Process: | (7036) Skype.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Spelling\Dictionaries |
| Operation: | delete value | Name: | en |
Value: | |||
| (PID) Process: | (7036) Skype.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Spelling\Dictionaries |
| Operation: | delete value | Name: | _Global_ |
Value: | |||
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 7036 | Skype.exe | C:\USERS\ADMIN\APPDATA\ROAMING\MICROSOFT\SPELLING\EN-US\DEFAULT.DIC | text | |
MD5:F3B25701FE362EC84616A93A45CE9998 | SHA256:B3D510EF04275CA8E698E5B3CBB0ECE3949EF9252F0CDC839E9EE347409A2209 | |||
| 7036 | Skype.exe | C:\USERS\ADMIN\APPDATA\ROAMING\MICROSOFT\SKYPE FOR DESKTOP\CRASHPAD\SETTINGS.DAT | binary | |
MD5:9D0439A794AA96ABD6AFF504C86C7F31 | SHA256:5DBC3A5DAF431973E245D83AB51B128E9C4CC2F3ECD61C45C88DB161ACC25B7B | |||
| 7036 | Skype.exe | C:\Users\admin\AppData\Roaming\Microsoft\Skype for Desktop\Local Storage\leveldb\LOG.old | text | |
MD5:46EED8B7CAAD25F7F453617DA0FB0857 | SHA256:5BC1DE0E32F2969386351B2BE088F13B6CC3DF7693EE9E92FEEF59DB6AF1FB92 | |||
| 7036 | Skype.exe | C:\USERS\ADMIN\APPDATA\ROAMING\MICROSOFT\SPELLING\EN-US\DEFAULT.ACL | text | |
MD5:F3B25701FE362EC84616A93A45CE9998 | SHA256:B3D510EF04275CA8E698E5B3CBB0ECE3949EF9252F0CDC839E9EE347409A2209 | |||
| 7036 | Skype.exe | C:\Users\admin\AppData\Roaming\Microsoft\Skype for Desktop\Partitions\bab1a59a-1368-4bb6-ae84-fcbd2f3053ac\Code Cache\wasm\index-dir\the-real-index | binary | |
MD5:4A07E0AC1CAD97D4EFEC3C89452C2879 | SHA256:7F8307817EB08F41D5EF1A49A7337D74F12613A4E4F8E83B0E1DF061381A9FA5 | |||
| 7036 | Skype.exe | C:\USERS\ADMIN\APPDATA\ROAMING\MICROSOFT\SPELLING\EN-US\DEFAULT.EXC | text | |
MD5:F3B25701FE362EC84616A93A45CE9998 | SHA256:B3D510EF04275CA8E698E5B3CBB0ECE3949EF9252F0CDC839E9EE347409A2209 | |||
| 7036 | Skype.exe | C:\Users\admin\AppData\Roaming\Microsoft\Skype for Desktop\Partitions\bab1a59a-1368-4bb6-ae84-fcbd2f3053ac\Code Cache\wasm\index | binary | |
MD5:54CB446F628B2EA4A5BCE5769910512E | SHA256:FBCFE23A2ECB82B7100C50811691DDE0A33AA3DA8D176BE9882A9DB485DC0F2D | |||
| 2860 | Skype.exe | C:\Users\admin\AppData\Roaming\Microsoft\Skype for Desktop\CS_skylib\CS_shared.tmp | binary | |
MD5:99914B932BD37A50B983C5E7C90AE93B | SHA256:44136FA355B3678A1146AD16F7E8649E94FB4FC21FE77E8310C060F61CAAFF8A | |||
| 7036 | Skype.exe | C:\USERS\ADMIN\APPDATA\ROAMING\MICROSOFT\SKYPE FOR DESKTOP\SETTINGS.JSON | binary | |
MD5:95D3A9F5B2C5989A3E6A174FB3E21820 | SHA256:5961A7DCBB98937F89DA58A47266F3E90DF340B8D255050312EB98356A006E70 | |||
| 7036 | Skype.exe | C:\Users\admin\AppData\Roaming\Microsoft\Skype for Desktop\Partitions\bab1a59a-1368-4bb6-ae84-fcbd2f3053ac\Code Cache\js\index | binary | |
MD5:54CB446F628B2EA4A5BCE5769910512E | SHA256:FBCFE23A2ECB82B7100C50811691DDE0A33AA3DA8D176BE9882A9DB485DC0F2D | |||
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
— | — | POST | — | 40.126.31.73:443 | https://login.live.com/RST2.srf | unknown | — | — | — |
— | — | POST | — | 40.126.32.140:443 | https://login.live.com/RST2.srf | unknown | — | — | — |
— | — | POST | 200 | 20.199.58.43:443 | https://arc.msn.com/v4/api/register?asid=8C907AFB82D34E96BA48F4260CE6A5FF&placement=cdmdevreg&country=US&locale=en-US&poptin=0&fmt=json&arch=AMD64&chassis=1&concp=0&d3dfl=D3D_FEATURE_LEVEL_12_1&devfam=Windows.Desktop&devosver=10.0.19045.4046&dinst=1661339444&dmret=0&flightbranch=&flightring=Retail&icluc=0&localid=w%3AAC7699B0-48EA-FD22-C8DC-06A02098A0F0&oem=DELL&osbranch=vb_release&oslocale=en-US&osret=1&ossku=Professional&osskuid=48&prccn=4&prccs=3094&prcmf=AuthenticAMD&procm=Intel%28R%29%20Core%28TM%29%20i5-6400%20CPU%20%40%202.70GHz&ram=4096&tinst=Client&tl=1&pat=0&smc=0&sac=0&disphorzres=1280&dispsize=15.3&dispvertres=720&ldisphorzres=1280&ldispvertres=720&moncnt=1&cpdsk=260281&frdsk=218542&lo=3614349&tsu=1004879 | unknown | — | — | — |
— | — | POST | 500 | 40.91.76.224:443 | https://activation-v2.sls.microsoft.com/SLActivateProduct/SLActivateProduct.asmx?configextension=Retail | unknown | xml | 512 b | — |
— | — | POST | — | 40.126.32.140:443 | https://login.live.com/RST2.srf | unknown | — | — | — |
— | — | GET | 200 | 95.101.27.77:443 | https://www.bing.com/client/config?cc=US&setlang=en-US | unknown | binary | 2.15 Kb | — |
— | — | POST | — | 40.126.32.72:443 | https://login.live.com/RST2.srf | unknown | — | — | — |
— | — | GET | 200 | 150.171.22.254:443 | https://ln-ring.msedge.net/apc/trans.gif?6c2b324023e93b347bd13b831ba7650c | unknown | image | 43 b | — |
— | — | POST | 204 | 95.101.27.77:443 | https://www.bing.com/threshold/xls.aspx | unknown | — | — | — |
— | — | GET | 200 | 95.101.27.88:443 | https://www.bing.com/AS/API/WindowsCortanaPane/V2/Suggestions?qry=cmd&setlang=en-US&cc=US&nohs=1&qfm=1&cp=3&cvid=e4eec2e5b82443df85d01c9866fceddc&ig=00e5c2de5f264eaf9d03a24d2fd85cff | unknown | binary | 6.47 Kb | — |
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
4716 | svchost.exe | 20.190.159.64:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
5620 | MoUsoCoreWorker.exe | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
7856 | svchost.exe | 4.209.33.156:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | US | unknown |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
4032 | svchost.exe | 239.255.255.250:1900 | — | — | — | whitelisted |
2720 | slui.exe | 20.83.72.98:443 | activation-v2.sls.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
2760 | svchost.exe | 40.113.103.199:443 | client.wns.windows.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
6556 | backgroundTaskHost.exe | 20.223.35.26:443 | arc.msn.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
5252 | RUXIMICS.exe | 51.124.78.146:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
Domain | IP | Reputation |
|---|---|---|
login.live.com |
| whitelisted |
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
activation-v2.sls.microsoft.com |
| whitelisted |
arc.msn.com |
| whitelisted |
www.bing.com |
| whitelisted |
fd.api.iris.microsoft.com |
| whitelisted |
ln-ring.msedge.net |
| unknown |
client.wns.windows.com |
| whitelisted |
arm-ring.msedge.net |
| unknown |
PID | Process | Class | Message |
|---|---|---|---|
— | — | Generic Protocol Command Decode | SURICATA HTTP Request unrecognized authorization method |
— | — | Potential Corporate Privacy Violation | ET CHAT Skype User-Agent detected |
— | — | Potential Corporate Privacy Violation | ET CHAT Skype User-Agent detected |
— | — | Potential Corporate Privacy Violation | ET CHAT Skype User-Agent detected |
— | — | Potential Corporate Privacy Violation | ET CHAT Skype User-Agent detected |
— | — | Potential Corporate Privacy Violation | ET CHAT Skype User-Agent detected |
— | — | Potential Corporate Privacy Violation | ET CHAT Skype User-Agent detected |