Windows Analysis Report
stub.exe

Overview

General Information

Sample name: stub.exe
Analysis ID: 1502470
MD5: 96c62ca985ed966d7c6d274caa5bb41a
SHA1: 97842b7b0d381ae027f8a92787ffff84eca2a698
SHA256: c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa
Tags: exeStealeriumStealeriumStealer
Infos:

Detection

Stealerium
Score: 100
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Antivirus / Scanner detection for submitted sample
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Stealerium
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Contains functionality to capture screen (.Net source)
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for sample
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected Costura Assembly Loader
Allocates memory with a write watch (potentially for evading sandboxes)
Binary contains a suspicious time stamp
Checks if the current process is being debugged
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Queries sensitive Operating System Information (via WMI, Win32_ComputerSystem, often done to detect virtual machines)
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Uses 32bit PE files
Uses taskkill to terminate processes
Yara detected Credential Stealer
Yara signature match

Classification

Name Description Attribution Blogpost URLs Link
Stealerium According to SecurityScorecard, Stealerium is an open-source stealer available on GitHub. The malware steals information from browsers, cryptocurrency wallets, and applications such as Discord, Pidgin, Outlook, Telegram, Skype, Element, Signal, Tox, Steam, Minecraft, and VPN clients. The binary also gathers data about the infected host, such as the running processes, Desktop and webcam screenshots, Wi-Fi networks, the Windows product key, and the public and private IP address. The stealer employs multiple anti-analysis techniques, such as detecting virtual machines, sandboxes, and malware analysis tools and checking if the process is being debugged. The malware also embedded a keylogger module and a clipper module that replaces cryptocurrency wallet addresses with the threat actors addresses if the victim makes a transaction. The stolen information is sent to a Discord channel using a Discord Webhook. No Attribution https://malpedia.caad.fkie.fraunhofer.de/details/win.stealerium

AV Detection
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Antivirus / Scanner detection for submitted sample
Source: stub.exe Avira: detected
Found malware configuration
Source: 00000000.00000000.1632374521.0000000000C72000.00000002.00000001.01000000.00000003.sdmp Malware Configuration Extractor: Stealerium {"C2 url": "https://discord.com/api/webhooks/1216977598710812722/eEJiGM8jVlIOF9WMbphPIuNdIEZhhSSu4T_LZSo0WE_S2YnMqS8z5lz1bmAKfC9V08aI"}
Multi AV Scanner detection for submitted file
Source: stub.exe Virustotal: Detection: 76% Perma Link
Source: stub.exe ReversingLabs: Detection: 91%
AI detected suspicious sample
Source: Submited Sample Integrated Neural Analysis Model: Matched 99.6% probability
Machine Learning detection for sample
Source: stub.exe Joe Sandbox ML: detected
Uses 32bit PE files
Source: stub.exe Static PE information: EXECUTABLE_IMAGE, LARGE_ADDRESS_AWARE, 32BIT_MACHINE
Source: unknown HTTPS traffic detected: 162.159.136.232:443 -> 192.168.2.4:49730 version: TLS 1.2
Source: stub.exe Static PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: Binary string: costura.polly.pdb.compressed|||Polly.pdb|FD65CB8378305DD2185A5847C599E82A6AA5AD7A|81672 source: stub.exe
Source: Binary string: D:\a\_work\1\s\corefx\bin\obj\AnyOS.AnyCPU.Release\System.Memory\netfx\System.Memory.pdb source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1717104214.00000000043C5000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1718394403.0000000006030000.00000004.08000000.00040000.00000000.sdmp
Source: Binary string: costura.dotnetzip.pdb.compressed source: stub.exe
Source: Binary string: mscorlib.pdb source: stub.exe, 00000000.00000002.1714379327.000000000356E000.00000004.00000800.00020000.00000000.sdmp
Source: Binary string: costura=costura.costura.dll.compressed=costura.costura.pdb.compressed-discord-webhook-client[costura.discord-webhook-client.dll.compressed source: stub.exe
Source: Binary string: costura.polly.pdb.compressed source: stub.exe
Source: Binary string: /_/artifacts/obj/System.Text.Json/Release/net462/System.Text.Json.pdb source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1718232203.0000000005FA0000.00000004.08000000.00040000.00000000.sdmp, stub.exe, 00000000.00000002.1717104214.00000000041F7000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1710686089.00000000014E1000.00000004.00000020.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp
Source: Binary string: costura.costura.pdb.compressed source: stub.exe
Source: Binary string: n0C:\Windows\mscorlib.pdb source: stub.exe, 00000000.00000002.1718750202.0000000006D2B000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: costura.dotnetzip.pdb.compressed|||DotNetZip.pdb|565BABCBCD978AF66FE1150CC58FDEAFC9815822|622080 source: stub.exe
Source: Binary string: dotnetzipAcostura.dotnetzip.dll.compressedAcostura.dotnetzip.pdb.compressed;microsoft.bcl.asyncinterfacesicostura.microsoft.bcl.asyncinterfaces.dll.compressed source: stub.exe
Source: Binary string: $^q costura.dotnetzip.pdb.compressed source: stub.exe, 00000000.00000002.1714379327.0000000003191000.00000004.00000800.00020000.00000000.sdmp
Source: Binary string: costura.costura.pdb.compressed|||Costura.pdb|6C6000A5EAF8579850AB82A89BD6268776EB51AD|2608 source: stub.exe
Source: Binary string: polly9costura.polly.dll.compressed9costura.polly.pdb.compressed source: stub.exe
Source: Binary string: /_/artifacts/obj/System.Text.Json/Release/net462/System.Text.Json.pdbSHA256Qb source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1718232203.0000000005FA0000.00000004.08000000.00040000.00000000.sdmp, stub.exe, 00000000.00000002.1717104214.00000000041F7000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1710686089.00000000014E1000.00000004.00000020.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp

Networking
barindex
C2 URLs / IPs found in malware configuration
Source: Malware configuration extractor URLs: https://discord.com/api/webhooks/1216977598710812722/eEJiGM8jVlIOF9WMbphPIuNdIEZhhSSu4T_LZSo0WE_S2YnMqS8z5lz1bmAKfC9V08aI
HTTP GET or POST without a user agent
Source: global traffic HTTP traffic detected: GET /api/webhooks/1216977598710812722/eEJiGM8jVlIOF9WMbphPIuNdIEZhhSSu4T_LZSo0WE_S2YnMqS8z5lz1bmAKfC9V08aI HTTP/1.1Host: discord.comConnection: Keep-Alive
IP address seen in connection with other malware
Source: Joe Sandbox View IP Address: 162.159.136.232 162.159.136.232
Internet Provider seen in connection with other malware
Source: Joe Sandbox View ASN Name: CLOUDFLARENETUS CLOUDFLARENETUS
JA3 SSL client fingerprint seen in connection with other malware
Source: Joe Sandbox View JA3 fingerprint: 3b5074b1b5d032e5620f69f9f700ff0e
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: global traffic HTTP traffic detected: GET /api/webhooks/1216977598710812722/eEJiGM8jVlIOF9WMbphPIuNdIEZhhSSu4T_LZSo0WE_S2YnMqS8z5lz1bmAKfC9V08aI HTTP/1.1Host: discord.comConnection: Keep-Alive
Source: global traffic DNS traffic detected: DNS query: discord.com
Source: global traffic HTTP traffic detected: HTTP/1.1 404 Not FoundDate: Sun, 01 Sep 2024 16:09:53 GMTContent-Type: application/jsonContent-Length: 45Connection: closeset-cookie: __dcfduid=9fa9e5be687c11efa2ff2e0ac1bafc8d; Expires=Fri, 31-Aug-2029 16:09:53 GMT; Max-Age=157680000; Secure; HttpOnly; Path=/; SameSite=Laxstrict-transport-security: max-age=31536000; includeSubDomains; preloadx-ratelimit-bucket: 3d2712a9e4fe17cc9d3fed4a8e672e5fx-ratelimit-limit: 5x-ratelimit-remaining: 4x-ratelimit-reset: 1725206994x-ratelimit-reset-after: 1via: 1.1 googlealt-svc: h3=":443"; ma=86400CF-Cache-Status: MISSExpires: Sun, 01 Sep 2024 20:09:53 GMTCache-Control: public, max-age=14400Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=TQlxRCUtIYXRlkKVdgg2Vs1N%2F6xsBEYGrAuryfnRy0LM8G%2FfNKROjA4Jyg%2BOsLU4Hf2%2FTeKjEU64P20%2Bc2zMcf17WqVYdAco7HT8H2wZ7fnRLaBHV371MwtLDGOj"}],"group":"cf-nel","max_age":604800}NEL: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}X-Content-Type-Options: nosniffContent-Security-Policy: frame-ancestors 'none'; default-src 'none'Set-Cookie: __sdcfduid=9fa9e5be687c11efa2ff2e0ac1bafc8dd571a141d5614895aa2bfadae526d02924b726e9d5a1b5271d4ff6ad1090086d; Expires=Fri, 31-Aug-2029 16:09:53 GMT; Max-Age=157680000; Secure; HttpOnly; Path=/; SameSite=Lax
Source: stub.exe, 00000000.00000002.1714379327.0000000003541000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: http://discord.com
Source: stub.exe, 00000000.00000002.1714379327.0000000003541000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: http://discord.comd
Source: stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name
Source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1718232203.0000000005FA0000.00000004.08000000.00040000.00000000.sdmp, stub.exe, 00000000.00000002.1717104214.00000000041F7000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: https://aka.ms/binaryformatter
Source: stub.exe, 00000000.00000002.1717104214.00000000041F7000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: https://aka.ms/dotnet-warnings/
Source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1718232203.0000000005FA0000.00000004.08000000.00040000.00000000.sdmp, stub.exe, 00000000.00000002.1717104214.00000000041F7000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: https://aka.ms/serializationformat-binary-obsolete
Source: stub.exe, 00000000.00000002.1714379327.0000000003538000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: https://discord.com
Source: stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: https://discord.com/api/webhooks/1216977598710812722/eEJiGM8jVlIOF9WMbphPIuNdIEZhhSSu4T_LZSo0WE_S2Yn
Source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1717104214.00000000043C5000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1718394403.0000000006030000.00000004.08000000.00040000.00000000.sdmp String found in binary or memory: https://github.com/dotnet/corefx/tree/32b491939fbd125f304031c35038b1e14b4e3958
Source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1717104214.00000000043C5000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1718394403.0000000006030000.00000004.08000000.00040000.00000000.sdmp String found in binary or memory: https://github.com/dotnet/corefx/tree/32b491939fbd125f304031c35038b1e14b4e39588
Source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1718232203.0000000005FA0000.00000004.08000000.00040000.00000000.sdmp, stub.exe, 00000000.00000002.1717104214.00000000041F7000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: https://github.com/dotnet/roslyn/issues/46646
Source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1718232203.0000000005FA0000.00000004.08000000.00040000.00000000.sdmp, stub.exe, 00000000.00000002.1717104214.00000000041F7000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: https://github.com/dotnet/roslyn/issues/46646~
Source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1718232203.0000000005FA0000.00000004.08000000.00040000.00000000.sdmp, stub.exe, 00000000.00000002.1717104214.00000000041F7000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: https://github.com/dotnet/runtime
Source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1718232203.0000000005FA0000.00000004.08000000.00040000.00000000.sdmp, stub.exe, 00000000.00000002.1717104214.00000000041F7000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: https://github.com/dotnet/runtime/issues/73124.
Source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1718232203.0000000005FA0000.00000004.08000000.00040000.00000000.sdmp, stub.exe, 00000000.00000002.1717104214.00000000041F7000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: https://github.com/dotnet/runtime8
Source: stub.exe String found in binary or memory: https://github.com/kgnfth
Source: stub.exe, 00000000.00000002.1714379327.0000000003191000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: https://user-images.githubusercontent.com/73314940/227717196-0165bb7f-c33a-4985-8be8-2bd898eacc2b.pn
Source: unknown Network traffic detected: HTTP traffic on port 443 -> 49730
Source: unknown Network traffic detected: HTTP traffic on port 49730 -> 443
Source: unknown HTTPS traffic detected: 162.159.136.232:443 -> 192.168.2.4:49730 version: TLS 1.2

Key, Mouse, Clipboard, Microphone and Screen Capturing
barindex
Contains functionality to capture screen (.Net source)
Source: stub.exe, DesktopScreenshot.cs .Net Code: Make
Contains functionality to log keystrokes (.Net Source)
Source: stub.exe, Keylogger.cs .Net Code: SetHook
Source: stub.exe, Keylogger.cs .Net Code: KeyboardLayout

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: stub.exe, type: SAMPLE Matched rule: Detects executables referencing Discord tokens regular expressions Author: ditekSHen
Source: stub.exe, type: SAMPLE Matched rule: Detects executables referencing many VPN software clients. Observed in infosteslers Author: ditekSHen
Source: 0.0.stub.exe.c70000.0.unpack, type: UNPACKEDPE Matched rule: Detects executables referencing Discord tokens regular expressions Author: ditekSHen
Source: 0.0.stub.exe.c70000.0.unpack, type: UNPACKEDPE Matched rule: Detects executables referencing many VPN software clients. Observed in infosteslers Author: ditekSHen
Source: 00000000.00000000.1632374521.0000000000C72000.00000002.00000001.01000000.00000003.sdmp, type: MEMORY Matched rule: Detects executables referencing Discord tokens regular expressions Author: ditekSHen
Detected potential crypto function
Source: C:\Users\user\Desktop\stub.exe Code function: 0_2_01424550 0_2_01424550
Source: C:\Users\user\Desktop\stub.exe Code function: 0_2_01427429 0_2_01427429
Source: C:\Users\user\Desktop\stub.exe Code function: 0_2_01424E20 0_2_01424E20
Source: C:\Users\user\Desktop\stub.exe Code function: 0_2_01424208 0_2_01424208
Sample file is different than original file name gathered from version info
Source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: OriginalFilenameSystem.Text.Json.dll@ vs stub.exe
Source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: OriginalFilenameSystem.Memory.dllT vs stub.exe
Source: stub.exe, 00000000.00000002.1718232203.0000000005FA0000.00000004.08000000.00040000.00000000.sdmp Binary or memory string: OriginalFilenameSystem.Text.Json.dll@ vs stub.exe
Source: stub.exe, 00000000.00000002.1717104214.00000000041F7000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: OriginalFilenameSystem.Text.Json.dll@ vs stub.exe
Source: stub.exe, 00000000.00000002.1710686089.00000000014E1000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: OriginalFilenameSystem.Text.Json.dll@ vs stub.exe
Source: stub.exe, 00000000.00000002.1717104214.00000000043C5000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: OriginalFilenameSystem.Memory.dllT vs stub.exe
Source: stub.exe, 00000000.00000002.1710686089.000000000145E000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: OriginalFilenameclr.dllT vs stub.exe
Source: stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: OriginalFilenameSystem.Text.Json.dll@ vs stub.exe
Source: stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: OriginalFilenameSystem.Memory.dllT vs stub.exe
Source: stub.exe, 00000000.00000002.1718394403.0000000006030000.00000004.08000000.00040000.00000000.sdmp Binary or memory string: OriginalFilenameSystem.Memory.dllT vs stub.exe
Uses 32bit PE files
Source: stub.exe Static PE information: EXECUTABLE_IMAGE, LARGE_ADDRESS_AWARE, 32BIT_MACHINE
Yara signature match
Source: stub.exe, type: SAMPLE Matched rule: INDICATOR_SUSPICIOUS_EXE_Discord_Regex author = ditekSHen, description = Detects executables referencing Discord tokens regular expressions
Source: stub.exe, type: SAMPLE Matched rule: INDICATOR_SUSPICIOUS_EXE_References_VPN author = ditekSHen, description = Detects executables referencing many VPN software clients. Observed in infosteslers
Source: 0.0.stub.exe.c70000.0.unpack, type: UNPACKEDPE Matched rule: INDICATOR_SUSPICIOUS_EXE_Discord_Regex author = ditekSHen, description = Detects executables referencing Discord tokens regular expressions
Source: 0.0.stub.exe.c70000.0.unpack, type: UNPACKEDPE Matched rule: INDICATOR_SUSPICIOUS_EXE_References_VPN author = ditekSHen, description = Detects executables referencing many VPN software clients. Observed in infosteslers
Source: 00000000.00000000.1632374521.0000000000C72000.00000002.00000001.01000000.00000003.sdmp, type: MEMORY Matched rule: INDICATOR_SUSPICIOUS_EXE_Discord_Regex author = ditekSHen, description = Detects executables referencing Discord tokens regular expressions
Source: stub.exe Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: classification engine Classification label: mal100.troj.spyw.evad.winEXE@10/1@1/1
Source: C:\Users\user\Desktop\stub.exe File created: C:\Users\user\AppData\Local\cdce37eb5392dda50c9d36846d9a361b Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Mutant created: NULL
Source: C:\Users\user\Desktop\stub.exe Mutant created: \Sessions\1\BaseNamedObjects\J2HAC7I0JMZ4NW61EGKI
Source: C:\Windows\System32\conhost.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:2188:120:WilError_03
Source: C:\Users\user\Desktop\stub.exe File created: C:\Users\user\AppData\Local\Temp\tmp5F.tmp Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process created: C:\Windows\SysWOW64\cmd.exe "C:\Windows\System32\cmd.exe" /C C:\Users\user\AppData\Local\Temp\tmp5F.tmp.bat
Source: stub.exe Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: stub.exe Static file information: TRID: Win32 Executable (generic) Net Framework (10011505/4) 49.80%
Source: C:\Users\user\Desktop\stub.exe WMI Queries: IWbemServices::ExecQuery - root\CIMV2 : SELECT * FROM Win32_Processor
Source: C:\Users\user\Desktop\stub.exe WMI Queries: IWbemServices::ExecQuery - root\CIMV2 : SELECT * FROM Win32_Processor
Source: C:\Users\user\Desktop\stub.exe WMI Queries: IWbemServices::ExecQuery - root\CIMV2 : SELECT * FROM Win32_Processor
Source: C:\Windows\SysWOW64\taskkill.exe WMI Queries: IWbemServices::ExecQuery - root\cimv2 : SELECT __PATH, ProcessId, CSName, Caption, SessionId, ThreadCount, WorkingSetSize, KernelModeTime, UserModeTime, ParentProcessId FROM Win32_Process WHERE ( ProcessId = 1732)
Source: C:\Users\user\Desktop\stub.exe File read: C:\Users\user\Desktop\desktop.ini Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: stub.exe Virustotal: Detection: 76%
Source: stub.exe ReversingLabs: Detection: 91%
Source: stub.exe String found in binary or memory: /C -StartDelay : Sleeping ISetFileCreationDate : Changing file
Source: C:\Users\user\Desktop\stub.exe File read: C:\Users\user\Desktop\stub.exe Jump to behavior
Source: unknown Process created: C:\Users\user\Desktop\stub.exe "C:\Users\user\Desktop\stub.exe"
Source: C:\Users\user\Desktop\stub.exe Process created: C:\Windows\SysWOW64\cmd.exe "C:\Windows\System32\cmd.exe" /C C:\Users\user\AppData\Local\Temp\tmp5F.tmp.bat
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\chcp.com chcp 65001
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\taskkill.exe TaskKill /F /IM 1732
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\timeout.exe Timeout /T 2 /Nobreak
Source: C:\Users\user\Desktop\stub.exe Process created: C:\Windows\SysWOW64\cmd.exe "C:\Windows\System32\cmd.exe" /C C:\Users\user\AppData\Local\Temp\tmp5F.tmp.bat Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\chcp.com chcp 65001 Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\taskkill.exe TaskKill /F /IM 1732 Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\timeout.exe Timeout /T 2 /Nobreak Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: mscoree.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: apphelp.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: kernel.appcore.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: version.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: vcruntime140_clr0400.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: ucrtbase_clr0400.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: ucrtbase_clr0400.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: sspicli.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: windows.storage.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: wldp.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: wbemcomn.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: amsi.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: userenv.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: profapi.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: cryptsp.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: rsaenh.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: cryptbase.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: iphlpapi.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: dnsapi.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: dhcpcsvc6.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: dhcpcsvc.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: winnsi.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: msasn1.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: gpapi.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: rasapi32.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: rasman.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: rtutils.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: mswsock.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: winhttp.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: ondemandconnroutehelper.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: rasadhlp.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: fwpuclnt.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: secur32.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: schannel.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: mskeyprotect.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: ntasn1.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: ncrypt.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: ncryptsslp.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: uxtheme.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: propsys.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: edputil.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: urlmon.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: iertutil.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: srvcli.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: netutils.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: windows.staterepositoryps.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: wintypes.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: appresolver.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: bcp47langs.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: slc.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: sppc.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: onecorecommonproxystub.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Section loaded: onecoreuapcommonproxystub.dll Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Section loaded: cmdext.dll Jump to behavior
Source: C:\Windows\SysWOW64\chcp.com Section loaded: ulib.dll Jump to behavior
Source: C:\Windows\SysWOW64\chcp.com Section loaded: fsutilext.dll Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Section loaded: version.dll Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Section loaded: mpr.dll Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Section loaded: framedynos.dll Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Section loaded: dbghelp.dll Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Section loaded: sspicli.dll Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Section loaded: srvcli.dll Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Section loaded: netutils.dll Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Section loaded: sspicli.dll Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Section loaded: kernel.appcore.dll Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Section loaded: wbemcomn.dll Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Section loaded: winsta.dll Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Section loaded: amsi.dll Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Section loaded: userenv.dll Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Section loaded: profapi.dll Jump to behavior
Source: C:\Windows\SysWOW64\timeout.exe Section loaded: version.dll Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CF4CC405-E2C5-4DDD-B3CE-5E7582D8C9FA}\InprocServer32 Jump to behavior
Source: C:\Users\user\Desktop\stub.exe File opened: C:\Windows\Microsoft.NET\Framework\v4.0.30319\mscorrc.dll Jump to behavior
Source: stub.exe Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR
Source: stub.exe Static PE information: Virtual size of .text is bigger than: 0x100000
Source: stub.exe Static file information: File size 1628160 > 1048576
Source: stub.exe Static PE information: Raw size of .text is bigger than: 0x100000 < 0x18c000
Source: stub.exe Static PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE
Source: stub.exe Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG
Source: Binary string: costura.polly.pdb.compressed|||Polly.pdb|FD65CB8378305DD2185A5847C599E82A6AA5AD7A|81672 source: stub.exe
Source: Binary string: D:\a\_work\1\s\corefx\bin\obj\AnyOS.AnyCPU.Release\System.Memory\netfx\System.Memory.pdb source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1717104214.00000000043C5000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1718394403.0000000006030000.00000004.08000000.00040000.00000000.sdmp
Source: Binary string: costura.dotnetzip.pdb.compressed source: stub.exe
Source: Binary string: mscorlib.pdb source: stub.exe, 00000000.00000002.1714379327.000000000356E000.00000004.00000800.00020000.00000000.sdmp
Source: Binary string: costura=costura.costura.dll.compressed=costura.costura.pdb.compressed-discord-webhook-client[costura.discord-webhook-client.dll.compressed source: stub.exe
Source: Binary string: costura.polly.pdb.compressed source: stub.exe
Source: Binary string: /_/artifacts/obj/System.Text.Json/Release/net462/System.Text.Json.pdb source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1718232203.0000000005FA0000.00000004.08000000.00040000.00000000.sdmp, stub.exe, 00000000.00000002.1717104214.00000000041F7000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1710686089.00000000014E1000.00000004.00000020.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp
Source: Binary string: costura.costura.pdb.compressed source: stub.exe
Source: Binary string: n0C:\Windows\mscorlib.pdb source: stub.exe, 00000000.00000002.1718750202.0000000006D2B000.00000004.00000010.00020000.00000000.sdmp
Source: Binary string: costura.dotnetzip.pdb.compressed|||DotNetZip.pdb|565BABCBCD978AF66FE1150CC58FDEAFC9815822|622080 source: stub.exe
Source: Binary string: dotnetzipAcostura.dotnetzip.dll.compressedAcostura.dotnetzip.pdb.compressed;microsoft.bcl.asyncinterfacesicostura.microsoft.bcl.asyncinterfaces.dll.compressed source: stub.exe
Source: Binary string: $^q costura.dotnetzip.pdb.compressed source: stub.exe, 00000000.00000002.1714379327.0000000003191000.00000004.00000800.00020000.00000000.sdmp
Source: Binary string: costura.costura.pdb.compressed|||Costura.pdb|6C6000A5EAF8579850AB82A89BD6268776EB51AD|2608 source: stub.exe
Source: Binary string: polly9costura.polly.dll.compressed9costura.polly.pdb.compressed source: stub.exe
Source: Binary string: /_/artifacts/obj/System.Text.Json/Release/net462/System.Text.Json.pdbSHA256Qb source: stub.exe, 00000000.00000002.1717104214.000000000430F000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1718232203.0000000005FA0000.00000004.08000000.00040000.00000000.sdmp, stub.exe, 00000000.00000002.1717104214.00000000041F7000.00000004.00000800.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1710686089.00000000014E1000.00000004.00000020.00020000.00000000.sdmp, stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp

Data Obfuscation
barindex
.NET source code contains potential unpacker
Source: stub.exe, AssemblyLoader.cs .Net Code: ReadFromEmbeddedResources System.Reflection.Assembly.Load(byte[])
Yara detected Costura Assembly Loader
Source: Yara match File source: stub.exe, type: SAMPLE
Source: Yara match File source: 0.0.stub.exe.c70000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000000.00000000.1632374521.0000000000C72000.00000002.00000001.01000000.00000003.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.1714379327.0000000003191000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: stub.exe PID: 1732, type: MEMORYSTR
Binary contains a suspicious time stamp
Source: stub.exe Static PE information: 0xAC1F6259 [Mon Jul 4 21:25:45 2061 UTC]
Source: stub.exe Static PE information: section name: .text entropy: 7.936689660662959
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

Malware Analysis System Evasion
barindex
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Source: C:\Users\user\Desktop\stub.exe WMI Queries: IWbemServices::ExecQuery - root\CIMV2 : SELECT * FROM Win32_VideoController
Source: C:\Users\user\Desktop\stub.exe WMI Queries: IWbemServices::ExecQuery - root\CIMV2 : SELECT * FROM Win32_VideoController
Source: C:\Users\user\Desktop\stub.exe WMI Queries: IWbemServices::ExecQuery - root\CIMV2 : SELECT * FROM Win32_VideoController
Source: C:\Users\user\Desktop\stub.exe WMI Queries: IWbemServices::ExecQuery - root\CIMV2 : SELECT * FROM Win32_VideoController
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Source: stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: SBIEDLL.DLL
Allocates memory with a write watch (potentially for evading sandboxes)
Source: C:\Users\user\Desktop\stub.exe Memory allocated: 1420000 memory reserve | memory write watch Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Memory allocated: 3190000 memory reserve | memory write watch Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Memory allocated: 5190000 memory reserve | memory write watch Jump to behavior
Contains long sleeps (>= 3 min)
Source: C:\Users\user\Desktop\stub.exe Thread delayed: delay time: 922337203685477 Jump to behavior
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Source: C:\Users\user\Desktop\stub.exe Window / User API: threadDelayed 706 Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Window / User API: threadDelayed 1461 Jump to behavior
May sleep (evasive loops) to hinder dynamic analysis
Source: C:\Users\user\Desktop\stub.exe TID: 2424 Thread sleep time: -4611686018427385s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\stub.exe TID: 2424 Thread sleep time: -100000s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\stub.exe TID: 2200 Thread sleep count: 706 > 30 Jump to behavior
Source: C:\Users\user\Desktop\stub.exe TID: 2200 Thread sleep count: 1461 > 30 Jump to behavior
Source: C:\Users\user\Desktop\stub.exe TID: 2424 Thread sleep time: -99875s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\stub.exe TID: 2424 Thread sleep time: -99765s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\stub.exe TID: 2424 Thread sleep time: -99656s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\stub.exe TID: 2424 Thread sleep time: -99546s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\stub.exe TID: 2424 Thread sleep time: -99320s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\stub.exe TID: 2424 Thread sleep time: -99218s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\stub.exe TID: 2424 Thread sleep time: -99108s >= -30000s Jump to behavior
Source: C:\Users\user\Desktop\stub.exe TID: 2424 Thread sleep time: -98953s >= -30000s Jump to behavior
Queries sensitive Operating System Information (via WMI, Win32_ComputerSystem, often done to detect virtual machines)
Source: C:\Users\user\Desktop\stub.exe WMI Queries: IWbemServices::ExecQuery - root\cimv2 : Select * from Win32_ComputerSystem
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Source: C:\Users\user\Desktop\stub.exe WMI Queries: IWbemServices::ExecQuery - root\CIMV2 : SELECT * FROM Win32_Processor
Source: C:\Users\user\Desktop\stub.exe WMI Queries: IWbemServices::ExecQuery - root\CIMV2 : SELECT * FROM Win32_Processor
Source: C:\Users\user\Desktop\stub.exe WMI Queries: IWbemServices::ExecQuery - root\CIMV2 : SELECT * FROM Win32_Processor
Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Windows\System32\conhost.exe Last function: Thread delayed
Source: C:\Users\user\Desktop\stub.exe Thread delayed: delay time: 922337203685477 Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Thread delayed: delay time: 100000 Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Thread delayed: delay time: 99875 Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Thread delayed: delay time: 99765 Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Thread delayed: delay time: 99656 Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Thread delayed: delay time: 99546 Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Thread delayed: delay time: 99320 Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Thread delayed: delay time: 99218 Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Thread delayed: delay time: 99108 Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Thread delayed: delay time: 98953 Jump to behavior
Source: stub.exe, 00000000.00000002.1714379327.00000000033E7000.00000004.00000800.00020000.00000000.sdmp Binary or memory string: VMware
Source: stub.exe, 00000000.00000002.1717731651.00000000059F0000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: \??\SCSI#CdRom&Ven_NECVMWar&Prod_VMware_SATA_CD00#4&224f42ef&0&000000#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}
Source: stub.exe Binary or memory string: vmware
Source: stub.exe, 00000000.00000002.1717731651.00000000059F0000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: \??\SCSI#CdRom&Ven_NECVMWar&Prod_VMware_SATA_CD00#4&224f42ef&0&000000#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}\
Source: stub.exe, 00000000.00000002.1717997877.0000000005AF0000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Hyper-V RAW%SystemRoot%\system32\mswsock.dll'=
Source: stub.exe Binary or memory string: VMwareVBox
Source: stub.exe Binary or memory string: VirtualMachine:
Source: C:\Users\user\Desktop\stub.exe Process information queried: ProcessInformation Jump to behavior

Anti Debugging
barindex
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Source: C:\Users\user\Desktop\stub.exe Code function: 0_2_01428F90 CheckRemoteDebuggerPresent, 0_2_01428F90
Checks if the current process is being debugged
Source: C:\Users\user\Desktop\stub.exe Process queried: DebugPort Jump to behavior
Enables debug privileges
Source: C:\Users\user\Desktop\stub.exe Process token adjusted: Debug Jump to behavior
Source: C:\Windows\SysWOW64\taskkill.exe Process token adjusted: Debug Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Memory allocated: page read and write | page guard Jump to behavior

HIPS / PFW / Operating System Protection Evasion
barindex
.NET source code references suspicious native API functions
Source: stub.exe, Keylogger.cs Reference to suspicious API methods: MapVirtualKey(vkCode, 0u)
Source: stub.exe, Decryptor.cs Reference to suspicious API methods: WinApi.LoadLibrary(sPath + "\\mozglue.dll")
Source: stub.exe, Decryptor.cs Reference to suspicious API methods: WinApi.GetProcAddress(_hNss3, "NSS_Init")
Creates a process in suspended mode (likely to inject code)
Source: C:\Users\user\Desktop\stub.exe Process created: C:\Windows\SysWOW64\cmd.exe "C:\Windows\System32\cmd.exe" /C C:\Users\user\AppData\Local\Temp\tmp5F.tmp.bat Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\chcp.com chcp 65001 Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\taskkill.exe TaskKill /F /IM 1732 Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\timeout.exe Timeout /T 2 /Nobreak Jump to behavior
Uses taskkill to terminate processes
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\taskkill.exe TaskKill /F /IM 1732 Jump to behavior
Queries the volume information (name, serial number etc) of a device
Source: C:\Users\user\Desktop\stub.exe Queries volume information: C:\Users\user\Desktop\stub.exe VolumeInformation Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.ValueTuple\v4.0_4.0.0.0__cc7b13ffcd2ddd51\System.ValueTuple.dll VolumeInformation Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Users\user\Desktop\stub.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuid Jump to behavior

Stealing of Sensitive Information
barindex
Yara detected Stealerium
Source: Yara match File source: stub.exe, type: SAMPLE
Source: Yara match File source: 0.0.stub.exe.c70000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000000.00000000.1632374521.0000000000C72000.00000002.00000001.01000000.00000003.sdmp, type: MEMORY
Found many strings related to Crypto-Wallets (likely being stolen)
Source: stub.exe String found in binary or memory: Electrum#\Electrum\wallets
Source: stub.exe String found in binary or memory: \bytecoinJaxxk\com.liberty.jaxx\IndexedDB\file__0.indexeddb.leveldb
Source: stub.exe String found in binary or memory: Exodus+\Exodus\exodus.wallet
Source: stub.exe String found in binary or memory: Ethereum%\Ethereum\keystore
Source: stub.exe String found in binary or memory: Exodus+\Exodus\exodus.wallet
Source: stub.exe String found in binary or memory: Ethereum%\Ethereum\keystore
Source: stub.exe String found in binary or memory: Coinomi1\Coinomi\Coinomi\wallets
Source: stub.exe String found in binary or memory: Ethereum%\Ethereum\keystore
Yara detected Credential Stealer
Source: Yara match File source: stub.exe, type: SAMPLE
Source: Yara match File source: 0.0.stub.exe.c70000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000000.00000000.1632374521.0000000000C72000.00000002.00000001.01000000.00000003.sdmp, type: MEMORY

Remote Access Functionality
barindex
Yara detected Stealerium
Source: Yara match File source: stub.exe, type: SAMPLE
Source: Yara match File source: 0.0.stub.exe.c70000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000000.00000000.1632374521.0000000000C72000.00000002.00000001.01000000.00000003.sdmp, type: MEMORY
windows-stand
Hide Legend

Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Is Windows Process
  • Number of created Registry Values
  • Number of created Files
  • Visual Basic
  • Delphi
  • Java
  • .Net C# or VB.NET
  • C, C++ or other language
  • Is malicious
  • Internet
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1502470 Sample: stub.exe Startdate: 01/09/2024 Architecture: WINDOWS Score: 100 22 discord.com 2->22 26 Found malware configuration 2->26 28 Malicious sample detected (through community Yara rule) 2->28 30 Antivirus / Scanner detection for submitted sample 2->30 32 11 other signatures 2->32 8 stub.exe 15 10 2->8         started        signatures3 process4 dnsIp5 24 discord.com 162.159.136.232, 443, 49730 CLOUDFLARENETUS United States 8->24 34 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 8->34 36 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->36 38 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 8->38 12 cmd.exe 1 8->12         started        signatures6 process7 process8 14 taskkill.exe 1 12->14         started        16 conhost.exe 12->16         started        18 timeout.exe 1 12->18         started        20 chcp.com 1 12->20         started       
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
162.159.136.232
 discord.com United States
13335 CLOUDFLARENETUS true

Contacted Domains

Name IP Active
discord.com 162.159.136.232 true

Contacted URLs

Name Malicious Antivirus Detection Reputation
https://discord.com/api/webhooks/1216977598710812722/eEJiGM8jVlIOF9WMbphPIuNdIEZhhSSu4T_LZSo0WE_S2YnMqS8z5lz1bmAKfC9V08aI true
  • 2%, Virustotal, Browse
  • Avira URL Cloud: safe
 unknown