| File name: | !UVNCPFT-ytb.exe |
| Full analysis: | https://app.any.run/tasks/d5854aea-b82c-45d6-b462-059307d5fb8a |
| Verdict: | Malicious activity |
| Analysis date: | March 20, 2019, 15:28:39 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows |
| MD5: | 2AAA2E4488722E0F34C78DF4ACC186E6 |
| SHA1: | 0BEF1310F60192B2D97B85BF42A3F2B953ADED83 |
| SHA256: | 390BA9FB3741E0A571EB20B230B49DB472C7A2EA4DE2B068F9B1EA49B9BFE62E |
| SSDEEP: | 12288:rC2Z7lSBz5t+95zh37m81uIZynVGcQmr6Y8ij65kJQ:rTCYZ37myZo6Gj6yO |
MALICIOUS
Application was dropped or rewritten from another process
- YSearchUtilSvc.exe (PID: 1944)
- YSearchSetTool.exe (PID: 2304)
- YSearchUtilSvc.exe (PID: 4084)
- YSearchSetTool.exe (PID: 3476)
Loads dropped or rewritten executable
- !UVNCPFT-ytb.exe (PID: 2320)
- YSearchSetTool.exe (PID: 2304)
- YSearchSetTool.exe (PID: 3476)
Changes settings of System certificates
- !UVNCPFT-ytb.exe (PID: 2320)
SUSPICIOUS
Creates a software uninstall entry
- !UVNCPFT-ytb.exe (PID: 2320)
Creates files in the program directory
- !UVNCPFT-ytb.exe (PID: 2320)
Adds / modifies Windows certificates
- !UVNCPFT-ytb.exe (PID: 2320)
Executable content was dropped or overwritten
- !UVNCPFT-ytb.exe (PID: 2320)
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 MS Visual C++ (generic) (42.2) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (37.3) |
| .dll | | | Win32 Dynamic Link Library (generic) (8.8) |
| .exe | | | Win32 Executable (generic) (6) |
| .exe | | | Generic Win/DOS Executable (2.7) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2011:09:26 15:21:28+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 10 |
| CodeSize: | 28160 |
| InitializedDataSize: | 445952 |
| UninitializedDataSize: | 16896 |
| EntryPoint: | 0x3883 |
| OSVersion: | 5 |
| ImageVersion: | 6 |
| SubsystemVersion: | 5 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 2016.8.30.1 |
| ProductVersionNumber: | 2016.8.30.1 |
| FileFlagsMask: | 0x0000 |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| CompanyName: | Yahoo! Inc. |
| FileDescription: | Yahoo Search Set Setup |
| FileVersion: | 2016.08.30.01 |
| LegalCopyright: | Copyright (c) 2012 Yahoo! Inc. |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 26-Sep-2011 13:21:28 |
| Detected languages: |
|
| CompanyName: | Yahoo! Inc. |
| FileDescription: | Yahoo Search Set Setup |
| FileVersion: | 2016.08.30.01 |
| LegalCopyright: | Copyright (c) 2012 Yahoo! Inc. |
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: | 0x000000D0 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 6 |
| Time date stamp: | 26-Sep-2011 13:21:28 |
| 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 | 0x00001000 | 0x00006DAE | 0x00006E00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.50853 |
.rdata | 0x00008000 | 0x00002A62 | 0x00002C00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.39054 |
.data | 0x0000B000 | 0x00067EBC | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 1.43086 |
.ndata | 0x00073000 | 0x000AD000 | 0x00000000 | IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0 |
.rsrc | 0x00120000 | 0x00002108 | 0x00002200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 5.47484 |
.reloc | 0x00123000 | 0x00000F32 | 0x00001000 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 4.92676 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.21712 | 968 | UNKNOWN | English - United States | RT_MANIFEST |
2 | 5.31854 | 1128 | UNKNOWN | English - United States | RT_ICON |
103 | 2.21059 | 34 | UNKNOWN | English - United States | RT_GROUP_ICON |
105 | 2.73893 | 514 | UNKNOWN | English - United States | RT_DIALOG |
106 | 2.91148 | 248 | UNKNOWN | English - United States | RT_DIALOG |
111 | 2.92787 | 238 | UNKNOWN | English - United States | RT_DIALOG |
Imports
ADVAPI32.dll |
COMCTL32.dll |
GDI32.dll |
KERNEL32.dll |
SHELL32.dll |
USER32.dll |
VERSION.dll |
ole32.dll |
Total processes
40
Monitored processes
6
Malicious processes
3
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1944 | "C:\Program Files\Yahoo!\yset\{49E751B9-FB6F-2346-A736-E84C797D5122}\YSearchUtilSvc.exe" -install | C:\Program Files\Yahoo!\yset\{49E751B9-FB6F-2346-A736-E84C797D5122}\YSearchUtilSvc.exe | !UVNCPFT-ytb.exe | ||||||||||||
User: admin Company: Yahoo Inc. Integrity Level: HIGH Description: YSearchUtilSvc Exit code: 1053 Version: 1, 0, 0, 103 Modules
| |||||||||||||||
| 2304 | "C:\Program Files\Yahoo!\yset\{49E751B9-FB6F-2346-A736-E84C797D5122}\YSearchSetTool.exe" | C:\Program Files\Yahoo!\yset\{49E751B9-FB6F-2346-A736-E84C797D5122}\YSearchSetTool.exe | !UVNCPFT-ytb.exe | ||||||||||||
User: admin Company: Yahoo Inc. Integrity Level: HIGH Description: YSearchSetTool Exit code: 0 Version: 2016, 08, 30, 01 Modules
| |||||||||||||||
| 2320 | "C:\Users\admin\AppData\Local\Temp\!UVNCPFT-ytb.exe" | C:\Users\admin\AppData\Local\Temp\!UVNCPFT-ytb.exe | explorer.exe | ||||||||||||
User: admin Company: Yahoo! Inc. Integrity Level: HIGH Description: Yahoo Search Set Setup Exit code: 0 Version: 2016.08.30.01 Modules
| |||||||||||||||
| 3476 | "C:\Program Files\Yahoo!\yset\{49E751B9-FB6F-2346-A736-E84C797D5122}\YSearchSetTool.exe" /senderrping= | C:\Program Files\Yahoo!\yset\{49E751B9-FB6F-2346-A736-E84C797D5122}\YSearchSetTool.exe | YSearchUtilSvc.exe | ||||||||||||
User: admin Company: Yahoo Inc. Integrity Level: HIGH Description: YSearchSetTool Exit code: 0 Version: 2016, 08, 30, 01 Modules
| |||||||||||||||
| 3576 | "C:\Users\admin\AppData\Local\Temp\!UVNCPFT-ytb.exe" | C:\Users\admin\AppData\Local\Temp\!UVNCPFT-ytb.exe | — | explorer.exe | |||||||||||
User: admin Company: Yahoo! Inc. Integrity Level: MEDIUM Description: Yahoo Search Set Setup Exit code: 3221226540 Version: 2016.08.30.01 Modules
| |||||||||||||||
| 4084 | "C:\Program Files\Yahoo!\yset\{49E751B9-FB6F-2346-A736-E84C797D5122}\YSearchUtilSvc.exe" | C:\Program Files\Yahoo!\yset\{49E751B9-FB6F-2346-A736-E84C797D5122}\YSearchUtilSvc.exe | services.exe | ||||||||||||
User: SYSTEM Company: Yahoo Inc. Integrity Level: SYSTEM Description: YSearchUtilSvc Exit code: 0 Version: 1, 0, 0, 103 Modules
| |||||||||||||||
Total events
458
Read events
396
Write events
62
Delete events
0
Modification events
| (PID) Process: | (2320) !UVNCPFT-ytb.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Yahoo\ss |
| Operation: | write | Name: | clientID |
Value: {49E751B9-FB6F-2346-A736-E84C797D5122} | |||
| (PID) Process: | (2320) !UVNCPFT-ytb.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Yahoo\ss |
| Operation: | write | Name: | firstRun |
Value: 1 | |||
| (PID) Process: | (2320) !UVNCPFT-ytb.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Yahoo\ss |
| Operation: | write | Name: | INSTDIR |
Value: C:\Program Files\Yahoo!\yset\{49E751B9-FB6F-2346-A736-E84C797D5122} | |||
| (PID) Process: | (1944) YSearchUtilSvc.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Yahoo\ss |
| Operation: | write | Name: | userDefBrowser |
Value: Internet Explorer | |||
| (PID) Process: | (1944) YSearchUtilSvc.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Yahoo\ss |
| Operation: | write | Name: | chromeUserPath |
Value: C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default | |||
| (PID) Process: | (1944) YSearchUtilSvc.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Yahoo\ss |
| Operation: | write | Name: | svcNextCheckTime |
Value: 1553182139 | |||
| (PID) Process: | (1944) YSearchUtilSvc.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Yahoo\ss |
| Operation: | write | Name: | svcNextCheckSetTime |
Value: 1553099339 | |||
| (PID) Process: | (1944) YSearchUtilSvc.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Yahoo\ss |
| Operation: | write | Name: | svcDestructTime |
Value: 1553700539 | |||
| (PID) Process: | (1944) YSearchUtilSvc.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Yahoo\SSP |
| Operation: | write | Name: | installCount |
Value: 1 | |||
| (PID) Process: | (1944) YSearchUtilSvc.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Yahoo\ss |
| Operation: | write | Name: | installedVer |
Value: 1.0.0.103 | |||
Executable files
7
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2320 | !UVNCPFT-ytb.exe | C:\Users\admin\AppData\Local\Temp\nsiCF3.tmp\nsjDDF.tmp.htm | — | |
MD5:— | SHA256:— | |||
| 2320 | !UVNCPFT-ytb.exe | C:\Program Files\Yahoo!\yset\{49E751B9-FB6F-2346-A736-E84C797D5122}\YSearchSetTool.exe | executable | |
MD5:— | SHA256:— | |||
| 2320 | !UVNCPFT-ytb.exe | C:\Program Files\Yahoo!\yset\{49E751B9-FB6F-2346-A736-E84C797D5122}\YSearchUtilSVC.exe | executable | |
MD5:— | SHA256:— | |||
| 2320 | !UVNCPFT-ytb.exe | C:\Program Files\Yahoo!\yset\{49E751B9-FB6F-2346-A736-E84C797D5122}\unset.exe | executable | |
MD5:— | SHA256:— | |||
| 2320 | !UVNCPFT-ytb.exe | C:\Program Files\Yahoo!\yset\{49E751B9-FB6F-2346-A736-E84C797D5122}\YSearchUtil.dll | executable | |
MD5:— | SHA256:— | |||
| 2320 | !UVNCPFT-ytb.exe | C:\Users\admin\AppData\Local\Temp\nsiCF3.tmp\System.dll | executable | |
MD5:AE182DC797CD9AD2C025066692FC041B | SHA256:B214F6D6C4D27F749105F7E8846A7C2D475DBCC966876370B5A7DAB6E4B8A471 | |||
| 2320 | !UVNCPFT-ytb.exe | C:\Users\admin\AppData\Local\Temp\nsiCF3.tmp\nsisProcMgr_U.dll | executable | |
MD5:C4D19CD1DC5AF2E7D045605F3F27B565 | SHA256:657FB9D2407E65EB4F8EA74EC97CBCFD2C85C2E06422836DDBF3688B3C4DA0FE | |||
| 2320 | !UVNCPFT-ytb.exe | C:\Users\admin\AppData\Local\Temp\nsiCF3.tmp\inetc.dll | executable | |
MD5:F5B4F4D3EA501F029CD0C1B984167E40 | SHA256:0351B7ECD6A61ACCA50E1B5135DFD5A6FEE30C674D377DC404DE7DF98FD3EF56 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
2
DNS requests
2
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 |
|---|---|---|---|---|---|---|
2304 | YSearchSetTool.exe | 212.82.100.150:443 | toolbar.yahoo.com | Yahoo! UK Services Limited | CH | shared |
2320 | !UVNCPFT-ytb.exe | 188.125.72.139:443 | geo.yahoo.com | — | CH | suspicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
geo.yahoo.com |
| whitelisted |
toolbar.yahoo.com |
| whitelisted |
Threats
Process | Message |
|---|---|
YSearchSetTool.exe | 3-20-2019 15:28:59.390[2304,2312]: YSearchSetUtil called w/params: "C:\Program Files\Yahoo!\yset\{49E751B9-FB6F-2346-A736-E84C797D5122}\YSearchSetTool.exe"
|
YSearchUtilSvc.exe | 3-20-2019 15:28:59.421[1944,1964]: UtilInstallService: YSearchUtilSvc installed.
|
YSearchUtilSvc.exe | 3-20-2019 15:28:59.437[1944,1964]: Initializing settings at install time
|
YSearchUtilSvc.exe | 3-20-2019 15:28:59.437[1944,1964]: INSIDE SERVICE-- Sucessfully write default browser into registry
|
YSearchUtilSvc.exe | 3-20-2019 15:28:59.452[1944,1964]: --INSIDE SERVICE-- Successfully read Chrome's local state JSON file
|
YSearchUtilSvc.exe | 3-20-2019 15:28:59.484[1944,1964]: --INSIDE SERVICE-- Successfully parsed Chrome's local state JSON file
|
YSearchSetTool.exe | 3-20-2019 15:28:59.624[2304,2312]: RedirectKeysToInteractiveUser - successfully redirected!
|
YSearchUtilSvc.exe | ---YSearchUtilSvc started. Fresh boot: 0 (1052484)--- |
YSearchSetTool.exe | 3-20-2019 15:28:59.671[2304,2312]: YSearchSetUtil successfully loaded YSearchUtil.dll
|
YSearchUtilSvc.exe | 3-20-2019 15:28:59.671[1944,1964]: Starting YSearchUtilSvc
|