| File name: | DBinstaller.exe |
| Full analysis: | https://app.any.run/tasks/3c296e10-c129-4678-9558-b3f3fccf92c5 |
| Verdict: | Malicious activity |
| Analysis date: | October 31, 2019, 16:33:50 |
| 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: | B33DA2AB1B8F8A0AB01BEE5147C22263 |
| SHA1: | E375DC792D4F353B7350109EC06204AC862C7417 |
| SHA256: | D49688BFB38579FF0E0F5FC1659E356ED6FC8D29F0F0130FA85234C0144B6855 |
| SSDEEP: | 12288:H/iSuWgJQQNHrfZA4lzI3Xc1KruEquZJ7WAFcvBJV503sHldphqzO:H/iygFNHBlzUXaEqs6ZJV5TleO |
MALICIOUS
Loads dropped or rewritten executable
- DropboxUpdate.exe (PID: 2764)
- DropboxUpdate.exe (PID: 3820)
- DropboxUpdate.exe (PID: 3424)
Loads the Task Scheduler DLL interface
- DropboxUpdate.exe (PID: 3424)
Application was dropped or rewritten from another process
- DropboxUpdate.exe (PID: 3820)
- DropboxUpdate.exe (PID: 3424)
- DropboxUpdate.exe (PID: 2764)
SUSPICIOUS
Executable content was dropped or overwritten
- DBinstaller.exe (PID: 1028)
- msiexec.exe (PID: 3576)
- DropboxUpdate.exe (PID: 3424)
Disables SEHOP
- DropboxUpdate.exe (PID: 3424)
Creates files in the program directory
- DropboxUpdate.exe (PID: 2764)
- DropboxUpdate.exe (PID: 3820)
- DropboxUpdate.exe (PID: 3424)
Creates files in the Windows directory
- DropboxUpdate.exe (PID: 3424)
Application launched itself
- DropboxUpdate.exe (PID: 3820)
Starts itself from another location
- DropboxUpdate.exe (PID: 3424)
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) (67.4) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (14.2) |
| .exe | | | Win32 Executable (generic) (9.7) |
| .exe | | | Generic Win/DOS Executable (4.3) |
| .exe | | | DOS Executable Generic (4.3) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2019:07:15 11:03:58+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 9 |
| CodeSize: | 48128 |
| InitializedDataSize: | 630784 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x4aac |
| OSVersion: | 5 |
| ImageVersion: | - |
| SubsystemVersion: | 5 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 1.3.241.1 |
| ProductVersionNumber: | 1.3.241.1 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Windows NT 32-bit |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Unicode |
| CompanyName: | Dropbox, Inc. |
| FileDescription: | Dropbox Update Setup |
| FileVersion: | 1.3.241.1 |
| InternalName: | Dropbox Update Setup |
| LegalCopyright: | Copyright: Dropbox, Inc. 2015 (Omaha Copyright Google Inc.) |
| OriginalFileName: | DropboxUpdateSetup.exe |
| ProductName: | Dropbox Update |
| ProductVersion: | 1.3.241.1 |
| LanguageId: | en |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 15-Jul-2019 09:03:58 |
| Detected languages: |
|
| Debug artifacts: |
|
| CompanyName: | Dropbox, Inc. |
| FileDescription: | Dropbox Update Setup |
| FileVersion: | 1.3.241.1 |
| InternalName: | Dropbox Update Setup |
| LegalCopyright: | Copyright: Dropbox, Inc. 2015 (Omaha Copyright Google Inc.) |
| OriginalFilename: | DropboxUpdateSetup.exe |
| ProductName: | Dropbox Update |
| ProductVersion: | 1.3.241.1 |
| LanguageId: | en |
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: | 0x000000E8 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 5 |
| Time date stamp: | 15-Jul-2019 09:03:58 |
| 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 | 0x0000BAC2 | 0x0000BC00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.6715 |
.rdata | 0x0000D000 | 0x00002A62 | 0x00002C00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 5.40524 |
.data | 0x00010000 | 0x0000191C | 0x00000E00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 2.47997 |
.rsrc | 0x00012000 | 0x00094ED4 | 0x00095000 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 7.93813 |
.reloc | 0x000A7000 | 0x00001502 | 0x00001600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 3.82527 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.13392 | 756 | Latin 1 / Western European | UNKNOWN | RT_MANIFEST |
2 | 1.58427 | 5160 | Latin 1 / Western European | English - United States | RT_ICON |
3 | 1.32226 | 11560 | Latin 1 / Western European | English - United States | RT_ICON |
4 | 7.83684 | 7394 | Latin 1 / Western European | English - United States | RT_ICON |
101 | 2.49052 | 62 | Latin 1 / Western European | English - United States | RT_GROUP_ICON |
102 | 7.9997 | 571193 | Latin 1 / Western European | UNKNOWN | B |
1321 | 3.18214 | 540 | Latin 1 / Western European | Spanish - Spain (International sort) | RT_STRING |
Imports
ADVAPI32.dll |
KERNEL32.dll |
SHLWAPI.dll |
USER32.dll |
ole32.dll |
Total processes
41
Monitored processes
5
Malicious processes
4
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1028 | "C:\Users\admin\AppData\Local\Temp\DBinstaller.exe" | C:\Users\admin\AppData\Local\Temp\DBinstaller.exe | explorer.exe | ||||||||||||
User: admin Company: Dropbox, Inc. Integrity Level: MEDIUM Description: Dropbox Update Setup Exit code: 0 Version: 1.3.241.1 Modules
| |||||||||||||||
| 2764 | "C:\Program Files\Dropbox\Update\DropboxUpdate.exe" /regsvc | C:\Program Files\Dropbox\Update\DropboxUpdate.exe | — | DropboxUpdate.exe | |||||||||||
User: admin Company: Dropbox, Inc. Integrity Level: HIGH Description: Dropbox Update Exit code: 0 Version: 1.3.27.73 Modules
| |||||||||||||||
| 3424 | "C:\Users\admin\AppData\Local\Temp\GUMA5B0.tmp\DropboxUpdate.exe" /installsource taggedmi /install "appguid={CC46080E-4C33-4981-859A-BBA2F780F31E}&appname=Dropbox&needsadmin=Prefers&dropbox_data=eyJUQUdTIjoiREJQUkVBVVRIOjpjaHJvbWU6OmVKd055OHNLZ2tBVUFOQmZrVmxIM0tmamJSa0lFUlVVV1V2cElUbEVZekdHUWZUdnVUcXI4M1duZDlfV2ZYZHZvcHRsN29DWG00WHoyZ19INmpVZnlud2I0bVBfM0MybDBzWG1zNXFpZWxKbUkzU1R6S1VtcGRERk9sekhUR3hpaFJtU0FpTjVKZ0FyUUZYQVpNU3pva0QtLXdNTHZ4XzRATUVUQSJ9" /installelevated | C:\Users\admin\AppData\Local\Temp\GUMA5B0.tmp\DropboxUpdate.exe | DropboxUpdate.exe | ||||||||||||
User: admin Company: Dropbox, Inc. Integrity Level: HIGH Description: Dropbox Update Exit code: 0 Version: 1.3.27.73 Modules
| |||||||||||||||
| 3576 | C:\Windows\system32\msiexec.exe /V | C:\Windows\system32\msiexec.exe | services.exe | ||||||||||||
User: SYSTEM Company: Microsoft Corporation Integrity Level: SYSTEM Description: Windows® installer Exit code: 0 Version: 5.0.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3820 | C:\Users\admin\AppData\Local\Temp\GUMA5B0.tmp\DropboxUpdate.exe /installsource taggedmi /install "appguid={CC46080E-4C33-4981-859A-BBA2F780F31E}&appname=Dropbox&needsadmin=Prefers&dropbox_data=eyJUQUdTIjoiREJQUkVBVVRIOjpjaHJvbWU6OmVKd055OHNLZ2tBVUFOQmZrVmxIM0tmamJSa0lFUlVVV1V2cElUbEVZekdHUWZUdnVUcXI4M1duZDlfV2ZYZHZvcHRsN29DWG00WHoyZ19INmpVZnlud2I0bVBfM0MybDBzWG1zNXFpZWxKbUkzU1R6S1VtcGRERk9sekhUR3hpaFJtU0FpTjVKZ0FyUUZYQVpNU3pva0QtLXdNTHZ4XzRATUVUQSJ9" | C:\Users\admin\AppData\Local\Temp\GUMA5B0.tmp\DropboxUpdate.exe | — | DBinstaller.exe | |||||||||||
User: admin Company: Dropbox, Inc. Integrity Level: MEDIUM Description: Dropbox Update Exit code: 0 Version: 1.3.27.73 Modules
| |||||||||||||||
Total events
619
Read events
553
Write events
65
Delete events
1
Modification events
| (PID) Process: | (3424) DropboxUpdate.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\12B\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (2764) DropboxUpdate.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\{96D1EED3-701E-4FE5-B996-A543A8465897} |
| Operation: | write | Name: | |
Value: ServiceModule | |||
| (PID) Process: | (2764) DropboxUpdate.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\DropboxUpdate.exe |
| Operation: | write | Name: | AppID |
Value: {96D1EED3-701E-4FE5-B996-A543A8465897} | |||
| (PID) Process: | (2764) DropboxUpdate.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\{96D1EED3-701E-4FE5-B996-A543A8465897} |
| Operation: | write | Name: | LocalService |
Value: dbupdate | |||
| (PID) Process: | (2764) DropboxUpdate.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\{96D1EED3-701E-4FE5-B996-A543A8465897} |
| Operation: | write | Name: | ServiceParameters |
Value: /comsvc | |||
| (PID) Process: | (2764) DropboxUpdate.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Classes\DropboxUpdate.Update3COMClassService.1.0 |
| Operation: | write | Name: | |
Value: Update3COMClass | |||
| (PID) Process: | (2764) DropboxUpdate.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Classes\DropboxUpdate.Update3COMClassService.1.0\CLSID |
| Operation: | write | Name: | |
Value: {96D1EED3-701E-4FE5-B996-A543A8465897} | |||
| (PID) Process: | (2764) DropboxUpdate.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Classes\DropboxUpdate.Update3COMClassService |
| Operation: | write | Name: | |
Value: Update3COMClass | |||
| (PID) Process: | (2764) DropboxUpdate.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Classes\DropboxUpdate.Update3COMClassService\CLSID |
| Operation: | write | Name: | |
Value: {96D1EED3-701E-4FE5-B996-A543A8465897} | |||
| (PID) Process: | (2764) DropboxUpdate.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Classes\DropboxUpdate.Update3COMClassService\CurVer |
| Operation: | write | Name: | |
Value: DropboxUpdate.Update3COMClassService.1.0 | |||
Executable files
62
Suspicious files
2
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 1028 | DBinstaller.exe | C:\Users\admin\AppData\Local\Temp\GUMA5B0.tmp\DropboxUpdateBroker.exe | executable | |
MD5:— | SHA256:— | |||
| 1028 | DBinstaller.exe | C:\Users\admin\AppData\Local\Temp\GUMA5B0.tmp\DropboxUpdateHelper.msi | executable | |
MD5:— | SHA256:— | |||
| 1028 | DBinstaller.exe | C:\Users\admin\AppData\Local\Temp\GUMA5B0.tmp\DropboxUpdateOnDemand.exe | executable | |
MD5:— | SHA256:— | |||
| 1028 | DBinstaller.exe | C:\Users\admin\AppData\Local\Temp\GUMA5B0.tmp\psmachine.dll | executable | |
MD5:— | SHA256:— | |||
| 1028 | DBinstaller.exe | C:\Users\admin\AppData\Local\Temp\GUMA5B0.tmp\psuser.dll | executable | |
MD5:— | SHA256:— | |||
| 1028 | DBinstaller.exe | C:\Users\admin\AppData\Local\Temp\GUMA5B0.tmp\goopdateres_en.dll | executable | |
MD5:— | SHA256:— | |||
| 1028 | DBinstaller.exe | C:\Users\admin\AppData\Local\Temp\GUMA5B0.tmp\goopdateres_da.dll | executable | |
MD5:— | SHA256:— | |||
| 1028 | DBinstaller.exe | C:\Users\admin\AppData\Local\Temp\GUMA5B0.tmp\goopdateres_es.dll | executable | |
MD5:— | SHA256:— | |||
| 1028 | DBinstaller.exe | C:\Users\admin\AppData\Local\Temp\GUMA5B0.tmp\goopdateres_de.dll | executable | |
MD5:— | SHA256:— | |||
| 1028 | DBinstaller.exe | C:\Users\admin\AppData\Local\Temp\GUMA5B0.tmp\npDropboxUpdate3.dll | executable | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
0
DNS requests
0
Threats
0
HTTP requests
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