File name:

FuD-CryPteR.exe

Full analysis: https://app.any.run/tasks/3a2a2477-ab8c-4481-b8d1-3213b3211ea5
Verdict: Malicious activity
Threats:

AsyncRAT is a RAT that can monitor and remotely control infected systems. This malware was introduced on Github as a legitimate open-source remote administration software, but hackers use it for its many powerful malicious functions.

Analysis date: September 25, 2021, 13:07:13
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
trojan
rat
asyncrat
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

F569525615C7585C5E54720D11BC1AB7

SHA1:

C0F6869DB5365D4BE5C7F381F10175F18EB9B95C

SHA256:

E40DD437B2CAD30C5FA480CE932710E4121630D9D48ABA6C8527A3D6F006EA21

SSDEEP:

3072:0D32GhNvy+CFkUtzqJUtIFwl2BaxTXnY+nVugK0ia/Ch501GB2qwUxe0:U2GhN6bFkUtmloxBVvJK50kgqwU

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

      • FuD-CryPteR.exe (PID: 3760)
    • Application was dropped or rewritten from another process

      • WindowsShortcut.exe (PID: 2900)
      • WindowsSecurity.bat (PID: 1688)
    • ASYNCRAT was detected

      • WindowsShortcut.exe (PID: 2900)
    • Changes the autorun value in the registry

      • WindowsSecurity.bat (PID: 1688)
  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • FuD-CryPteR.exe (PID: 3760)
      • WindowsSecurity.bat (PID: 1688)
    • Suspicious files were dropped or overwritten

      • FuD-CryPteR.exe (PID: 3760)
    • Checks supported languages

      • FuD-CryPteR.exe (PID: 3760)
      • WindowsShortcut.exe (PID: 2900)
      • WindowsSecurity.bat (PID: 1688)
      • cmd.exe (PID: 2648)
    • Reads the computer name

      • FuD-CryPteR.exe (PID: 3760)
      • WindowsShortcut.exe (PID: 2900)
      • WindowsSecurity.bat (PID: 1688)
    • Reads Environment values

      • WindowsShortcut.exe (PID: 2900)
    • Starts application with an unusual extension

      • FuD-CryPteR.exe (PID: 3760)
    • Starts CMD.EXE for commands execution

      • WindowsSecurity.bat (PID: 1688)
  • INFO

    • Reads settings of System Certificates

      • WindowsShortcut.exe (PID: 2900)
    • Checks supported languages

      • timeout.exe (PID: 2748)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Generic CIL Executable (.NET, Mono, etc.) (82.9)
.dll | Win32 Dynamic Link Library (generic) (7.4)
.exe | Win32 Executable (generic) (5.1)
.exe | Generic Win/DOS Executable (2.2)
.exe | DOS Executable Generic (2.2)

EXIF

EXE

AssemblyVersion: 1.0.0.1
ProductVersion: 1.0.0.1
ProductName: Fud Crypter
OriginalFileName: FuD-CryPteR.exe
LegalTrademarks: Fud Crypter
LegalCopyright: Fud Crypter
InternalName: FuD-CryPteR.exe
FileVersion: 1.0.0.1
FileDescription: Fud Crypter
CompanyName: Fud Crypter
Comments: Fud Crypter
CharacterSet: Unicode
LanguageCode: Neutral
FileSubtype: -
ObjectFileType: Executable application
FileOS: Win32
FileFlags: (none)
FileFlagsMask: 0x003f
ProductVersionNumber: 1.0.0.1
FileVersionNumber: 1.0.0.1
Subsystem: Windows GUI
SubsystemVersion: 6
ImageVersion: -
OSVersion: 4
EntryPoint: 0x3f8ce
UninitializedDataSize: -
InitializedDataSize: 171008
CodeSize: 252416
LinkerVersion: 11
PEType: PE32
TimeStamp: 2021:09:24 14:48:44+02:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 24-Sep-2021 12:48:44
Debug artifacts:
  • c:\Users\21276\Documents\Visual Studio 2012\Projects\Sassikelb\Sassikelb\obj\Debug\FuD-CryPteR.pdb
Comments: Fud Crypter
CompanyName: Fud Crypter
FileDescription: Fud Crypter
FileVersion: 1.0.0.1
InternalName: FuD-CryPteR.exe
LegalCopyright: Fud Crypter
LegalTrademarks: Fud Crypter
OriginalFilename: FuD-CryPteR.exe
ProductName: Fud Crypter
ProductVersion: 1.0.0.1
Assembly Version: 1.0.0.1

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: 24-Sep-2021 12:48:44
Pointer to Symbol Table: 0x00000000
Number of symbols: 0
Size of Optional Header: 0x00E0
Characteristics:
  • IMAGE_FILE_32BIT_MACHINE
  • IMAGE_FILE_EXECUTABLE_IMAGE

Sections

Name
Virtual Address
Virtual Size
Raw Size
Charateristics
Entropy
.text
0x00002000
0x0003D8D4
0x0003DA00
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.24389
.rsrc
0x00040000
0x00029960
0x00029A00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
4.32308
.reloc
0x0006A000
0x0000000C
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
0.10191

Resources

Title
Entropy
Size
Codepage
Language
Type
1
5.00112
490
UNKNOWN
UNKNOWN
RT_MANIFEST
2
7.85258
6417
UNKNOWN
UNKNOWN
RT_ICON
3
3.33452
67624
UNKNOWN
UNKNOWN
RT_ICON
4
4.16983
38056
UNKNOWN
UNKNOWN
RT_ICON
5
4.07313
21640
UNKNOWN
UNKNOWN
RT_ICON
6
3.56941
16936
UNKNOWN
UNKNOWN
RT_ICON
7
4.42062
9640
UNKNOWN
UNKNOWN
RT_ICON
8
3.97302
4264
UNKNOWN
UNKNOWN
RT_ICON
9
4.75104
2440
UNKNOWN
UNKNOWN
RT_ICON
10
4.71016
1128
UNKNOWN
UNKNOWN
RT_ICON

Imports

mscoree.dll
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
39
Monitored processes
5
Malicious processes
2
Suspicious processes
1

Behavior graph

Click at the process to see the details
drop and start start fud-crypter.exe windowssecurity.bat cmd.exe no specs timeout.exe no specs #ASYNCRAT windowsshortcut.exe

Process information

PID
CMD
Path
Indicators
Parent process
1688"C:\Users\admin\AppData\Local\Temp\WindowsSecurity.bat" C:\Users\admin\AppData\Local\Temp\WindowsSecurity.bat
FuD-CryPteR.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Version:
1.0.0.0
Modules
Images
c:\users\admin\appdata\local\temp\windowssecurity.bat
c:\windows\system32\ntdll.dll
c:\windows\system32\mscoree.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\microsoft.net\framework\v4.0.30319\mscoreei.dll
2648C:\Windows\system32\cmd.exe /c ""C:\Users\admin\AppData\Local\Temp\tmp4548.tmp.bat""C:\Windows\system32\cmd.exeWindowsSecurity.bat
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Command Processor
Exit code:
1
Version:
6.1.7601.17514 (win7sp1_rtm.101119-1850)
Modules
Images
c:\windows\system32\cmd.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\winbrand.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
2748timeout 3 C:\Windows\system32\timeout.execmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
timeout - pauses command processing
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\timeout.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\ws2_32.dll
2900"C:\Users\admin\AppData\Local\Temp\WindowsShortcut.exe" C:\Users\admin\AppData\Local\Temp\WindowsShortcut.exe
cmd.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Version:
1.0.0.0
Modules
Images
c:\users\admin\appdata\local\temp\windowsshortcut.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\mscoree.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\microsoft.net\framework\v4.0.30319\mscoreei.dll
3760"C:\Users\admin\AppData\Local\Temp\FuD-CryPteR.exe" C:\Users\admin\AppData\Local\Temp\FuD-CryPteR.exe
Explorer.EXE
User:
admin
Company:
Fud Crypter
Integrity Level:
MEDIUM
Description:
Fud Crypter
Exit code:
0
Version:
1.0.0.1
Modules
Images
c:\users\admin\appdata\local\temp\fud-crypter.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\mscoree.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\microsoft.net\framework\v4.0.30319\mscoreei.dll
c:\windows\system32\rpcrt4.dll
Total events
5 260
Read events
5 227
Write events
33
Delete events
0

Modification events

(PID) Process:(3760) FuD-CryPteR.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:ProxyBypass
Value:
1
(PID) Process:(3760) FuD-CryPteR.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:IntranetName
Value:
1
(PID) Process:(3760) FuD-CryPteR.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:UNCAsIntranet
Value:
1
(PID) Process:(3760) FuD-CryPteR.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:AutoDetect
Value:
0
(PID) Process:(1688) WindowsSecurity.batKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\171\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
(PID) Process:(1688) WindowsSecurity.batKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:WindowsShortcut
Value:
"C:\Users\admin\AppData\Local\Temp\WindowsShortcut.exe"
(PID) Process:(2900) WindowsShortcut.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\171\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
Executable files
2
Suspicious files
3
Text files
1
Unknown types
1

Dropped files

PID
Process
Filename
Type
2900WindowsShortcut.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\77EC63BDA74BD0D0E0426DC8F8008506compressed
MD5:
SHA256:
3760FuD-CryPteR.exeC:\Users\admin\AppData\Local\Temp\WindowsSecurity.batexecutable
MD5:2C24055F43F371DBF0E7A3FF2C43DFD4
SHA256:6DDF626B13E883AD07C72FF1F135015D47FF81DC82E0C9759690D4448636178D
2900WindowsShortcut.exeC:\Users\admin\AppData\Local\Temp\Cab6A35.tmpcompressed
MD5:
SHA256:
2900WindowsShortcut.exeC:\Users\admin\AppData\Local\Temp\Tar6A36.tmpcat
MD5:
SHA256:
1688WindowsSecurity.batC:\Users\admin\AppData\Local\Temp\tmp4548.tmp.battext
MD5:
SHA256:
2900WindowsShortcut.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506binary
MD5:
SHA256:
1688WindowsSecurity.batC:\Users\admin\AppData\Local\Temp\WindowsShortcut.exeexecutable
MD5:2C24055F43F371DBF0E7A3FF2C43DFD4
SHA256:6DDF626B13E883AD07C72FF1F135015D47FF81DC82E0C9759690D4448636178D
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
1
TCP/UDP connections
2
DNS requests
2
Threats
3

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2900
WindowsShortcut.exe
GET
200
209.197.3.8:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?bdb216aeeeb79a6d
US
compressed
59.7 Kb
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
2900
WindowsShortcut.exe
209.197.3.8:80
ctldl.windowsupdate.com
Highwinds Network Group, Inc.
US
whitelisted
2900
WindowsShortcut.exe
160.176.228.165:5552
pornox.ddns.net
MT-MPLS
MA
malicious

DNS requests

Domain
IP
Reputation
pornox.ddns.net
  • 160.176.228.165
malicious
ctldl.windowsupdate.com
  • 209.197.3.8
whitelisted

Threats

PID
Process
Class
Message
Potentially Bad Traffic
ET POLICY DNS Query to DynDNS Domain *.ddns .net
2900
WindowsShortcut.exe
A Network Trojan was detected
ET TROJAN Observed Malicious SSL Cert (AsyncRAT Server)
1 ETPRO signatures available at the full report
No debug info