File name:

crypted.exe

Full analysis: https://app.any.run/tasks/94582416-4003-45bd-966d-8c26da384fcb
Verdict: Malicious activity
Threats:

Stealc is a stealer malware that targets victims’ sensitive data, which it exfiltrates from browsers, messaging apps, and other software. The malware is equipped with advanced features, including fingerprinting, control panel, evasion mechanisms, string obfuscation, etc. Stealc establishes persistence and communicates with its C2 server through HTTP POST requests.

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Analysis date: August 07, 2023, 14:11:45
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
stealc
stealer
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (console) Intel 80386, for MS Windows
MD5:

97EC989085E99D2DF0426B73620812B0

SHA1:

3E0F2934165679DD59094E75915A222D5788F381

SHA256:

3D54F10E6726B1828AC0252C4BD80E0C4777BBA4B34486C217BF2E629B8E67A8

SSDEEP:

12288:wL1Gr7+TspeaV64tA0sMdrl3xWzWF+ZuIXW3GAuk2RxRSzG:Vr7+TspeaV64yIlB472CZRxa

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

    • Connects to the CnC server

      • InstallUtil.exe (PID: 3580)

    • STEALC was detected

      • InstallUtil.exe (PID: 3580)

  • SUSPICIOUS

    • Connects to the server without a host name

      • InstallUtil.exe (PID: 3580)

    • Reads the Internet Settings

      • InstallUtil.exe (PID: 3580)

  • INFO

    • Checks proxy server information

      • InstallUtil.exe (PID: 3580)

    • The process checks LSA protection

      • InstallUtil.exe (PID: 3580)

    • Checks supported languages

      • crypted.exe (PID: 2880)
      • InstallUtil.exe (PID: 3580)

    • Reads the computer name

      • InstallUtil.exe (PID: 3580)

    • Reads the machine GUID from the registry

      • InstallUtil.exe (PID: 3580)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

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

Subsystem: Windows command line
SubsystemVersion: 6
ImageVersion: -
OSVersion: 6
EntryPoint: 0x501cc
UninitializedDataSize: -
InitializedDataSize: 270848
CodeSize: 721920
LinkerVersion: 14.34
PEType: PE32
ImageFileCharacteristics: Executable, 32-bit
TimeStamp: 2023:08:05 09:56:50+00:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_CUI
Compilation Date: 05-Aug-2023 09:56:50
Detected languages:
  • English - United States

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: 0x000000F8

PE Headers

Signature: PE
Machine: IMAGE_FILE_MACHINE_I386
Number of sections: 10
Time date stamp: 05-Aug-2023 09:56:50
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
.textbss7\xed\x04
0x00001000
0x0004ED37
0x00000000
IMAGE_SCN_CNT_CODE, IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
0
.text
0x00050000
0x000B03F4
0x000B0400
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.81774
.rdata
0x00101000
0x00018E83
0x00019000
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
4.16983
.data
0x0011A000
0x0002230C
0x00020800
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
7.12199
.idata
0x0013D000
0x00000CF6
0x00000E00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
4.38855
.00cfg
0x0013E000
0x0000010E
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
0.110557
.rsrc
0x0013F000
0x0000043C
0x00000600
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
2.14297
.reloc
0x00140000
0x00005783
0x00005800
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
5.97034
.Putya
0x00190000
0x000497C8
0x00049800
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_TYPE_COPY
0.00319034

Resources

Title
Entropy
Size
Codepage
Language
Type
1
4.91161
381
UNKNOWN
English - United States
RT_MANIFEST

Imports

COMCTL32.dll
GDI32.dll
KERNEL32.dll
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
37
Monitored processes
2
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
start crypted.exe no specs #STEALC installutil.exe

Process information

PID
CMD
Path
Indicators
Parent process
2880"C:\Users\admin\AppData\Local\Temp\crypted.exe" C:\Users\admin\AppData\Local\Temp\crypted.exe—explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\crypted.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\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\advapi32.dll
3580"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
crypted.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
.NET Framework installation utility
Exit code:
0
Version:
4.0.30319.34209 built by: FX452RTMGDR
Modules
Images
c:\windows\microsoft.net\framework\v4.0.30319\installutil.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
Total events
293
Read events
281
Write events
12
Delete events
0

Modification events

(PID) Process:(3580) InstallUtil.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies
Operation:writeName:CachePrefix
Value:
Cookie:
(PID) Process:(3580) InstallUtil.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History
Operation:writeName:CachePrefix
Value:
Visited:
(PID) Process:(3580) InstallUtil.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
Operation:writeName:ProxyEnable
Value:
0
(PID) Process:(3580) InstallUtil.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections
Operation:writeName:SavedLegacySettings
Value:
460000004E010000090000000000000000000000000000000400000000000000C0E333BBEAB1D3010000000000000000000000000100000002000000C0A8016B000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
(PID) Process:(3580) InstallUtil.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:ProxyBypass
Value:
1
(PID) Process:(3580) InstallUtil.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:IntranetName
Value:
1
(PID) Process:(3580) InstallUtil.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:UNCAsIntranet
Value:
1
(PID) Process:(3580) InstallUtil.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:AutoDetect
Value:
0
Executable files
0
Suspicious files
0
Text files
0
Unknown types
0

Dropped files

No data
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
1
TCP/UDP connections
4
DNS requests
0
Threats
2

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
3580
InstallUtil.exe
POST
200
94.131.107.238:80
http://94.131.107.238/3aa13fff14e398a1.php
NL
text
8 b
malicious
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
4
System
192.168.100.255:138
—
—
—
whitelisted
4
System
192.168.100.255:137
—
—
—
whitelisted
2640
svchost.exe
239.255.255.250:1900
—
—
—
whitelisted
3580
InstallUtil.exe
94.131.107.238:80
—
Stark Industries Solutions Ltd
NL
malicious

DNS requests

No data

Threats

PID
Process
Class
Message
3580
InstallUtil.exe
Malware Command and Control Activity Detected
ET MALWARE [SEKOIA.IO] Win32/Stealc C2 Check-in
3580
InstallUtil.exe
Malware Command and Control Activity Detected
STEALER [ANY.RUN] Stealc
No debug info
Interactive malware hunting service ANY.RUN
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Reports
crypted.exe