File name:

stochas_windows_installer.exe

Full analysis: https://app.any.run/tasks/d9c9870c-d727-488f-8828-24f4b4a8b224
Verdict: Malicious activity
Analysis date: June 27, 2022, 11:36:06
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
installer
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386, for MS Windows
MD5:

A50BAD534B4E0C0E3137B03B4311ADC4

SHA1:

A8198FDA1B12AEAE0A0A20A17DEC68871217D93A

SHA256:

2D0DB7558142D2FD9C6A357DE75554F925795C14123B8AB39DCC3B94F0CED1AB

SSDEEP:

98304:cSiX//YJj/vaD8Kt6qLAyZgvZtxhcAb+DidXvh6d204OOR5q0x:aaKDDffZgvZtxhPAgJ6M8YYs

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

  • MALICIOUS

    • Drops executable file immediately after starts

      • stochas_windows_installer.exe (PID: 2992)
      • stochas_windows_installer.exe (PID: 1168)
      • stochas_windows_installer.tmp (PID: 1504)

    • Application was dropped or rewritten from another process

      • Stochas.exe (PID: 2332)

  • SUSPICIOUS

    • Drops a file with a compile date too recent

      • stochas_windows_installer.exe (PID: 2992)
      • stochas_windows_installer.exe (PID: 1168)
      • stochas_windows_installer.tmp (PID: 1504)

    • Executable content was dropped or overwritten

      • stochas_windows_installer.exe (PID: 2992)
      • stochas_windows_installer.exe (PID: 1168)
      • stochas_windows_installer.tmp (PID: 1504)

    • Checks supported languages

      • stochas_windows_installer.tmp (PID: 3820)
      • stochas_windows_installer.exe (PID: 2992)
      • stochas_windows_installer.exe (PID: 1168)
      • stochas_windows_installer.tmp (PID: 1504)
      • Stochas.exe (PID: 2332)

    • Reads the computer name

      • stochas_windows_installer.tmp (PID: 3820)
      • stochas_windows_installer.tmp (PID: 1504)
      • Stochas.exe (PID: 2332)

    • Reads Windows owner or organization settings

      • stochas_windows_installer.tmp (PID: 1504)

    • Reads the Windows organization settings

      • stochas_windows_installer.tmp (PID: 1504)

    • Creates a directory in Program Files

      • stochas_windows_installer.tmp (PID: 1504)

    • Creates files in the user directory

      • Stochas.exe (PID: 2332)

  • INFO

    • Application was dropped or rewritten from another process

      • stochas_windows_installer.tmp (PID: 3820)
      • stochas_windows_installer.tmp (PID: 1504)

    • Creates a software uninstall entry

      • stochas_windows_installer.tmp (PID: 1504)

    • Manual execution by user

      • Stochas.exe (PID: 2332)

    • Creates files in the program directory

      • stochas_windows_installer.tmp (PID: 1504)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Inno Setup installer (51.8)
.exe | InstallShield setup (20.3)
.exe | Win32 EXE PECompact compressed (generic) (19.6)
.dll | Win32 Dynamic Link Library (generic) (3.1)
.exe | Win32 Executable (generic) (2.1)

EXIF

EXE

ProductVersion: 1.3.5.
ProductName: Stochas
OriginalFileName:
LegalCopyright:
FileVersion:
FileDescription: Stochas Setup
CompanyName: Open Source Software
Comments: This installation was built with Inno Setup.
CharacterSet: Unicode
LanguageCode: Neutral
FileSubtype: -
ObjectFileType: Executable application
FileOS: Win32
FileFlags: (none)
FileFlagsMask: 0x003f
ProductVersionNumber: 0.0.0.0
FileVersionNumber: 0.0.0.0
Subsystem: Windows GUI
SubsystemVersion: 6.1
ImageVersion: 6
OSVersion: 6.1
EntryPoint: 0xb5eec
UninitializedDataSize: -
InitializedDataSize: 38400
CodeSize: 741376
LinkerVersion: 2.25
PEType: PE32
TimeStamp: 2020:11:15 10:48:30+01:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 15-Nov-2020 09:48:30
Detected languages:
  • Dutch - Netherlands
  • English - United States
Comments: This installation was built with Inno Setup.
CompanyName: Open Source Software
FileDescription: Stochas Setup
FileVersion: -
LegalCopyright: -
OriginalFileName: -
ProductName: Stochas
ProductVersion: 1.3.5.

DOS Header

Magic number: MZ
Bytes on last page of file: 0x0050
Pages in file: 0x0002
Relocations: 0x0000
Size of header: 0x0004
Min extra paragraphs: 0x000F
Max extra paragraphs: 0xFFFF
Initial SS value: 0x0000
Initial SP value: 0x00B8
Checksum: 0x0000
Initial IP value: 0x0000
Initial CS value: 0x0000
Overlay number: 0x001A
OEM identifier: 0x0000
OEM information: 0x0000
Address of NE header: 0x00000100

PE Headers

Signature: PE
Machine: IMAGE_FILE_MACHINE_I386
Number of sections: 10
Time date stamp: 15-Nov-2020 09:48:30
Pointer to Symbol Table: 0x00000000
Number of symbols: 0
Size of Optional Header: 0x00E0
Characteristics:
  • IMAGE_FILE_32BIT_MACHINE
  • IMAGE_FILE_BYTES_REVERSED_HI
  • IMAGE_FILE_BYTES_REVERSED_LO
  • IMAGE_FILE_EXECUTABLE_IMAGE
  • IMAGE_FILE_LINE_NUMS_STRIPPED
  • IMAGE_FILE_LOCAL_SYMS_STRIPPED
  • IMAGE_FILE_RELOCS_STRIPPED

Sections

Name
Virtual Address
Virtual Size
Raw Size
Charateristics
Entropy
.text
0x00001000
0x000B361C
0x000B3800
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
6.35606
.itext
0x000B5000
0x00001688
0x00001800
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.97275
.data
0x000B7000
0x000037A4
0x00003800
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
5.0444
.bss
0x000BB000
0x00006DE8
0x00000000
IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
0
.idata
0x000C2000
0x00000F36
0x00001000
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
4.8987
.didata
0x000C3000
0x000001A4
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
2.75636
.edata
0x000C4000
0x0000009A
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
1.87222
.tls
0x000C5000
0x00000018
0x00000000
IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
0
.rdata
0x000C6000
0x0000005D
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
1.38389
.rsrc
0x000C7000
0x00004800
0x00004800
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
4.41466

Resources

Title
Entropy
Size
Codepage
Language
Type
1
5.18295
1830
UNKNOWN
English - United States
RT_MANIFEST
2
3.47151
1384
UNKNOWN
Dutch - Netherlands
RT_ICON
3
3.91708
744
UNKNOWN
Dutch - Netherlands
RT_ICON
4
3.91366
2216
UNKNOWN
Dutch - Netherlands
RT_ICON
4086
3.16547
864
UNKNOWN
UNKNOWN
RT_STRING
4087
3.40938
608
UNKNOWN
UNKNOWN
RT_STRING
4088
3.31153
1116
UNKNOWN
UNKNOWN
RT_STRING
4089
3.33977
1036
UNKNOWN
UNKNOWN
RT_STRING
4090
3.36723
724
UNKNOWN
UNKNOWN
RT_STRING
4091
3.33978
184
UNKNOWN
UNKNOWN
RT_STRING

Imports

advapi32.dll
comctl32.dll
kernel32.dll
kernel32.dll (delay-loaded)
netapi32.dll
oleaut32.dll
user32.dll
version.dll

Exports

Title
Ordinal
Address
dbkFCallWrapperAddr
1
0x000BE63C
__dbk_fcall_wrapper
2
0x0000D0A0
TMethodImplementationIntercept
3
0x00054060
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
41
Monitored processes
5
Malicious processes
3
Suspicious processes
2

Behavior graph

Click at the process to see the details
drop and start start drop and start stochas_windows_installer.exe stochas_windows_installer.tmp no specs stochas_windows_installer.exe stochas_windows_installer.tmp stochas.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
1168"C:\Users\admin\AppData\Local\Temp\stochas_windows_installer.exe" /SPAWNWND=$20130 /NOTIFYWND=$20138 C:\Users\admin\AppData\Local\Temp\stochas_windows_installer.exe
stochas_windows_installer.tmp
User:
admin
Company:
Open Source Software
Integrity Level:
HIGH
Description:
Stochas Setup
Exit code:
0
Version:
Modules
Images
c:\users\admin\appdata\local\temp\stochas_windows_installer.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.24483_none_2b200f664577e14b\comctl32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
1504"C:\Users\admin\AppData\Local\Temp\is-U1B32.tmp\stochas_windows_installer.tmp" /SL5="$2013C,3220606,780800,C:\Users\admin\AppData\Local\Temp\stochas_windows_installer.exe" /SPAWNWND=$20130 /NOTIFYWND=$20138 C:\Users\admin\AppData\Local\Temp\is-U1B32.tmp\stochas_windows_installer.tmp
stochas_windows_installer.exe
User:
admin
Company:
Open Source Software
Integrity Level:
HIGH
Description:
Setup/Uninstall
Exit code:
0
Version:
51.1052.0.0
Modules
Images
c:\users\admin\appdata\local\temp\is-u1b32.tmp\stochas_windows_installer.tmp
c:\windows\system32\ntdll.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\mpr.dll
c:\windows\system32\comdlg32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
2332"C:\Program Files\Stochas\Stochas.exe" C:\Program Files\Stochas\Stochas.exe—Explorer.EXE
User:
admin
Company:
Surge Synth Team
Integrity Level:
MEDIUM
Description:
Stochas
Exit code:
0
Version:
1.3.5
Modules
Images
c:\program files\stochas\stochas.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
c:\windows\system32\usp10.dll
c:\windows\system32\lpk.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shlwapi.dll
2992"C:\Users\admin\AppData\Local\Temp\stochas_windows_installer.exe" C:\Users\admin\AppData\Local\Temp\stochas_windows_installer.exe
Explorer.EXE
User:
admin
Company:
Open Source Software
Integrity Level:
MEDIUM
Description:
Stochas Setup
Exit code:
0
Version:
Modules
Images
c:\users\admin\appdata\local\temp\stochas_windows_installer.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.24483_none_2b200f664577e14b\comctl32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\version.dll
3820"C:\Users\admin\AppData\Local\Temp\is-6TPC5.tmp\stochas_windows_installer.tmp" /SL5="$20138,3220606,780800,C:\Users\admin\AppData\Local\Temp\stochas_windows_installer.exe" C:\Users\admin\AppData\Local\Temp\is-6TPC5.tmp\stochas_windows_installer.tmp—stochas_windows_installer.exe
User:
admin
Company:
Open Source Software
Integrity Level:
MEDIUM
Description:
Setup/Uninstall
Exit code:
0
Version:
51.1052.0.0
Modules
Images
c:\windows\system32\ntdll.dll
c:\users\admin\appdata\local\temp\is-6tpc5.tmp\stochas_windows_installer.tmp
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\mpr.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\comdlg32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
Total events
1 493
Read events
1 460
Write events
27
Delete events
6

Modification events

(PID) Process:(1504) stochas_windows_installer.tmpKey:HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
Operation:writeName:Owner
Value:
E005000028965C1B1A8AD801
(PID) Process:(1504) stochas_windows_installer.tmpKey:HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
Operation:writeName:SessionHash
Value:
9E7B231A282317AAFDACC68D4D47FF13FC0124539E9ED91E4934C356C8D814BD
(PID) Process:(1504) stochas_windows_installer.tmpKey:HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
Operation:writeName:Sequence
Value:
1
(PID) Process:(1504) stochas_windows_installer.tmpKey:HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
Operation:writeName:RegFiles0000
Value:
C:\Program Files\Stochas\Stochas.exe
(PID) Process:(1504) stochas_windows_installer.tmpKey:HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
Operation:writeName:RegFilesHash
Value:
1A370110BFA3FEEB61481B4C5D064C659270F9026A2BE8AD6B43C748C64F4E6E
(PID) Process:(1504) stochas_windows_installer.tmpKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{18D03379-6956-4365-BDA3-33D3CBBA991E}_is1
Operation:writeName:Inno Setup: Setup Version
Value:
6.1.2
(PID) Process:(1504) stochas_windows_installer.tmpKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{18D03379-6956-4365-BDA3-33D3CBBA991E}_is1
Operation:writeName:Inno Setup: App Path
Value:
C:\Users\admin\AppData\Local\Temp\stochas
(PID) Process:(1504) stochas_windows_installer.tmpKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{18D03379-6956-4365-BDA3-33D3CBBA991E}_is1
Operation:writeName:InstallLocation
Value:
C:\Users\admin\AppData\Local\Temp\stochas\
(PID) Process:(1504) stochas_windows_installer.tmpKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{18D03379-6956-4365-BDA3-33D3CBBA991E}_is1
Operation:writeName:Inno Setup: Icon Group
Value:
Surge Synth Team
(PID) Process:(1504) stochas_windows_installer.tmpKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{18D03379-6956-4365-BDA3-33D3CBBA991E}_is1
Operation:writeName:Inno Setup: User
Value:
admin
Executable files
6
Suspicious files
0
Text files
4
Unknown types
3

Dropped files

PID
Process
Filename
Type
1504stochas_windows_installer.tmpC:\ProgramData\Microsoft\Windows\Start Menu\Programs\Surge Synth Team\Stochas (32 bit).lnklnk
MD5:—
SHA256:—
1504stochas_windows_installer.tmpC:\Program Files\Stochas\Stochas.exeexecutable
MD5:—
SHA256:—
1504stochas_windows_installer.tmpC:\Program Files\Stochas\stochas_uninst\unins000.exeexecutable
MD5:—
SHA256:—
1504stochas_windows_installer.tmpC:\Program Files\Stochas\stochas_uninst\is-6I73C.tmpexecutable
MD5:—
SHA256:—
1504stochas_windows_installer.tmpC:\ProgramData\Microsoft\Windows\Start Menu\Programs\Surge Synth Team\Uninstall Stochas (32 bit).lnklnk
MD5:—
SHA256:—
1168stochas_windows_installer.exeC:\Users\admin\AppData\Local\Temp\is-U1B32.tmp\stochas_windows_installer.tmpexecutable
MD5:—
SHA256:—
2332Stochas.exeC:\Users\admin\AppData\Roaming\Stochas\Stochas_temp334c1c71.settingsxml
MD5:—
SHA256:—
2332Stochas.exeC:\Users\admin\AppData\Roaming\AudioVitamins\stochas_tempd1a63edd.cfgxml
MD5:—
SHA256:—
2332Stochas.exeC:\Users\admin\AppData\Roaming\Stochas\Stochas.settingsxml
MD5:—
SHA256:—
2332Stochas.exeC:\Users\admin\AppData\Roaming\AudioVitamins\stochas.cfgxml
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

No HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

No data

DNS requests

No data

Threats

No threats detected
No debug info
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Reports
stochas_windows_installer.exe