| File name: | UClient.exe |
| Full analysis: | https://app.any.run/tasks/fa503abe-8570-4be3-b2d9-03418ea3a5fc |
| 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 28, 2020, 01:14:20 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows |
| MD5: | 96BEA80FC8FBD848B43B62EA3F7FCA4A |
| SHA1: | 5CAD0D39485340AF832CD34F7E0E365885B0050B |
| SHA256: | 2DD60EBB77BD1AE025F2770D965568E21A97648653FEFCC9C9569DF96423098E |
| SSDEEP: | 98304:dzC/zOvXXoZORJ8+6Q5iSnvjWr3fTudki09+VfeDT:5ZX17npiJrb7ibiT |
MALICIOUS
Changes the autorun value in the registry
- UClient.exe (PID: 2084)
SUSPICIOUS
Starts itself from another location
- UClient.exe (PID: 2520)
Modifies the open verb of a shell class
- UClient.exe (PID: 2084)
Changes IE settings (feature browser emulation)
- UClient.exe (PID: 2084)
Executable content was dropped or overwritten
- UClient.exe (PID: 2084)
- UClient.exe (PID: 2520)
Creates files in the user directory
- UClient.exe (PID: 2084)
Reads Internet Cache Settings
- UClient.exe (PID: 2084)
INFO
Reads settings of System Certificates
- UClient.exe (PID: 2084)
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: | 2018:11:16 07:29:24+01:00 |
| PEType: | PE32 |
| LinkerVersion: | 14 |
| CodeSize: | 3596800 |
| InitializedDataSize: | 2660864 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x2d06ac |
| OSVersion: | 5.1 |
| ImageVersion: | - |
| SubsystemVersion: | 5.1 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 2.0.0.1046 |
| ProductVersionNumber: | 2.0.0.1046 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Windows NT 32-bit |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Unicode |
| CompanyName: | Yonyou Network Co., Ltd |
| FileDescription: | Yonyou UClient Application |
| FileVersion: | 2.0.0-build+201811161420 |
| InternalName: | UClient.exe |
| LegalCopyright: | Copyright (C) 2015 Yonyou Network Co., Ltd |
| OriginalFileName: | UClient.exe |
| ProductName: | UClient |
| ProductVersion: | 2.0.0-build+201811161420 |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 16-Nov-2018 06:29:24 |
| Detected languages: |
|
| TLS Callbacks: | 1 callback(s) detected. |
| Debug artifacts: |
|
| CompanyName: | Yonyou Network Co., Ltd |
| FileDescription: | Yonyou UClient Application |
| FileVersion: | 2.0.0-build+201811161420 |
| InternalName: | UClient.exe |
| LegalCopyright: | Copyright (C) 2015 Yonyou Network Co., Ltd |
| OriginalFilename: | UClient.exe |
| ProductName: | UClient |
| ProductVersion: | 2.0.0-build+201811161420 |
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: | 0x00000120 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 7 |
| Time date stamp: | 16-Nov-2018 06:29:24 |
| 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 | 0x0036E0DF | 0x0036E200 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.50299 |
.rdata | 0x00370000 | 0x000B8AF0 | 0x000B8C00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.88657 |
.data | 0x00429000 | 0x000306B0 | 0x00028A00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 5.08608 |
.gfids | 0x0045A000 | 0x000011DC | 0x00001200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.10732 |
.tls | 0x0045C000 | 0x00000009 | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0.0203931 |
.rsrc | 0x0045D000 | 0x00166860 | 0x00166A00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 7.99094 |
.reloc | 0x005C4000 | 0x000387B0 | 0x00038800 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 6.55722 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 4.91161 | 381 | UNKNOWN | English - United States | RT_MANIFEST |
2 | 5.22348 | 4264 | UNKNOWN | English - United States | RT_ICON |
3 | 5.41509 | 1128 | UNKNOWN | English - United States | RT_ICON |
4 | 5.44302 | 1128 | UNKNOWN | English - United States | RT_ICON |
7 | 1.80331 | 60 | UNKNOWN | English - United States | RT_STRING |
103 | 3.48122 | 348 | UNKNOWN | English - United States | RT_DIALOG |
107 | 2.45849 | 48 | UNKNOWN | English - United States | RT_GROUP_ICON |
108 | 1.9815 | 20 | UNKNOWN | English - United States | RT_GROUP_ICON |
109 | 1.79879 | 16 | UNKNOWN | English - United States | RT_ACCELERATOR |
129 | 7.99738 | 1448386 | UNKNOWN | UNKNOWN | RT_RCDATA |
Imports
ADVAPI32.dll |
COMDLG32.dll |
GDI32.dll |
IPHLPAPI.DLL |
KERNEL32.dll |
PSAPI.DLL |
SHELL32.dll |
SHLWAPI.dll |
USER32.dll |
VERSION.dll |
Total processes
41
Monitored processes
2
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2084 | "C:\Users\admin\Desktop\UClient.exe" /t 2520 | C:\Users\admin\Desktop\UClient.exe | UClient.exe | ||||||||||||
User: admin Company: Yonyou Network Co., Ltd Integrity Level: MEDIUM Description: Yonyou UClient Application Exit code: 0 Version: 2.0.0-build+201811161420 Modules
| |||||||||||||||
| 2520 | "C:\Users\admin\AppData\Local\Temp\UClient.exe" | C:\Users\admin\AppData\Local\Temp\UClient.exe | explorer.exe | ||||||||||||
User: admin Company: Yonyou Network Co., Ltd Integrity Level: MEDIUM Description: Yonyou UClient Application Exit code: 0 Version: 2.0.0-build+201811161420 Modules
| |||||||||||||||
Total events
341
Read events
305
Write events
36
Delete events
0
Modification events
| (PID) Process: | (2520) UClient.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (2520) UClient.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
| (PID) Process: | (2084) UClient.exe | Key: | HKEY_CLASSES_ROOT\uclient |
| Operation: | write | Name: | (default) |
Value: URL:uclient protocol handler | |||
| (PID) Process: | (2084) UClient.exe | Key: | HKEY_CLASSES_ROOT\uclient |
| Operation: | write | Name: | URL Protocol |
Value: | |||
| (PID) Process: | (2084) UClient.exe | Key: | HKEY_CLASSES_ROOT\uclient\DefaultIcon |
| Operation: | write | Name: | (default) |
Value: C:\Users\admin\Desktop\UClient.exe | |||
| (PID) Process: | (2084) UClient.exe | Key: | HKEY_CLASSES_ROOT\uclient\shell\open\command |
| Operation: | write | Name: | (default) |
Value: C:\Users\admin\Desktop\UClient.exe "%1" | |||
| (PID) Process: | (2084) UClient.exe | Key: | HKEY_CLASSES_ROOT\.esc |
| Operation: | write | Name: | (default) |
Value: uclient | |||
| (PID) Process: | (2084) UClient.exe | Key: | HKEY_CLASSES_ROOT\.esc\DefaultIcon |
| Operation: | write | Name: | (default) |
Value: C:/Users/admin/Desktop/UClient.exe | |||
| (PID) Process: | (2084) UClient.exe | Key: | HKEY_CLASSES_ROOT\.esc\shell\open\command |
| Operation: | write | Name: | (default) |
Value: C:/Users/admin/Desktop/UClient.exe "%1" | |||
| (PID) Process: | (2084) UClient.exe | Key: | HKEY_CLASSES_ROOT\.escr |
| Operation: | write | Name: | (default) |
Value: uclient | |||
Executable files
2
Suspicious files
1
Text files
5
Unknown types
4
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2084 | UClient.exe | C:\Users\admin\AppData\Local\UClient\UClient.db-journal | — | |
MD5:— | SHA256:— | |||
| 2520 | UClient.exe | C:\Users\admin\Desktop\UClient.exe | executable | |
MD5:— | SHA256:— | |||
| 2084 | UClient.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\UClient\卸载UClient.lnk | lnk | |
MD5:— | SHA256:— | |||
| 2084 | UClient.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\UClient\UClient.lnk | lnk | |
MD5:— | SHA256:— | |||
| 2084 | UClient.exe | C:\Users\admin\AppData\Local\UClient\temp\UClient_2.0.0-build+201904031420.exe | executable | |
MD5:— | SHA256:— | |||
| 2520 | UClient.exe | C:\Users\admin\AppData\Local\UClient\log\main.log | text | |
MD5:— | SHA256:— | |||
| 2084 | UClient.exe | C:\Users\admin\AppData\Local\UClient\share\.l | compressed | |
MD5:— | SHA256:— | |||
| 2084 | UClient.exe | C:\Users\admin\AppData\Local\UClient\UClient.db | sqlite | |
MD5:— | SHA256:— | |||
| 2084 | UClient.exe | C:\Users\admin\AppData\Local\UClient\appgroup.xml | xml | |
MD5:8258C3FB494764B7E4D1DFA6F98B5249 | SHA256:27B2F8BAB527C849AAA7B7742614E64BFE7BC72EFE34BC020DF20019F19258D3 | |||
| 2084 | UClient.exe | C:\Users\admin\AppData\Local\UClient\apporder.xml | xml | |
MD5:BAC02EBF3111D51121A9D094E148A690 | SHA256:B3126694D4041C8D808D33AA9AE6E8199798CEB40B527E27DC5846BED21A5D5B | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
2
TCP/UDP connections
6
DNS requests
3
Threats
1
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
— | — | GET | — | 47.94.79.19:80 | http://umessage.yonyou.com/eventbus/websocket | CN | — | — | unknown |
2084 | UClient.exe | GET | 200 | 47.246.43.230:80 | http://cdn.yonyoucloud.com/pro/uclient/uclients/2.0.0-build_201904031420_Windows/UClient.exe | US | executable | 5.99 Mb | malicious |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
2084 | UClient.exe | 59.110.247.93:443 | uclient.yonyoucloud.com | Hangzhou Alibaba Advertising Co.,Ltd. | CN | unknown |
2084 | UClient.exe | 47.246.43.230:80 | cdn.yonyoucloud.com | — | US | malicious |
— | — | 47.94.79.19:80 | umessage.yonyou.com | Hangzhou Alibaba Advertising Co.,Ltd. | CN | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
uclient.yonyoucloud.com |
| unknown |
cdn.yonyoucloud.com |
| malicious |
umessage.yonyou.com |
| unknown |
Threats
PID | Process | Class | Message |
|---|---|---|---|
2084 | UClient.exe | Potential Corporate Privacy Violation | ET POLICY PE EXE or DLL Windows file download HTTP |