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Windows
Analysis Report
file.exe
Overview
General Information
Detection
LummaC, Amadey, Credential Flusher, LummaC Stealer, Stealc
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Attempt to bypass Chrome Application-Bound Encryption
Detected unpacking (changes PE section rights)
Found malware configuration
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Suricata IDS alerts for network traffic
Yara detected Amadeys stealer DLL
Yara detected AntiVM3
Yara detected Credential Flusher
Yara detected LummaC Stealer
Yara detected Powershell download and execute
Yara detected Stealc
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
AI detected suspicious sample
Binary is likely a compiled AutoIt script file
C2 URLs / IPs found in malware configuration
Creates multiple autostart registry keys
Disable Windows Defender notifications (registry)
Disable Windows Defender real time protection (registry)
Disables Windows Defender Tamper protection
Drops VBS files to the startup folder
Drops large PE files
Encrypted powershell cmdline option found
Found many strings related to Crypto-Wallets (likely being stolen)
Hides threads from debuggers
Loading BitLocker PowerShell Module
LummaC encrypted strings found
Machine Learning detection for dropped file
Machine Learning detection for sample
Modifies windows update settings
PE file contains section with special chars
Potentially malicious time measurement code found
Query firmware table information (likely to detect VMs)
Sample uses string decryption to hide its real strings
Sigma detected: New RUN Key Pointing to Suspicious Folder
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: WScript or CScript Dropper
Tries to detect process monitoring tools (Task Manager, Process Explorer etc.)
Tries to detect sandboxes / dynamic malware analysis system (registry check)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect sandboxes and other dynamic analysis tools (window names)
Tries to detect virtualization through RDTSC time measurements
Tries to evade debugger and weak emulator (self modifying code)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Crypto Currency Wallets
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected Costura Assembly Loader
AV process strings found (often used to terminate AV products)
Allocates memory with a write watch (potentially for evading sandboxes)
Checks for debuggers (devices)
Checks if Antivirus/Antispyware/Firewall program is installed (via WMI)
Checks if the current process is being debugged
Contains capabilities to detect virtual machines
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to query CPU information (cpuid)
Contains functionality to read the PEB
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Creates a start menu entry (Start Menu\Programs\Startup)
Creates files inside the system directory
Creates job files (autostart)
Detected non-DNS traffic on DNS port
Detected potential crypto function
Downloads executable code via HTTP
Dropped file seen in connection with other malware
Drops PE files
Drops PE files to the application program directory (C:\ProgramData)
Enables debug privileges
Entry point lies outside standard sections
Found WSH timer for Javascript or VBS script (likely evasive script)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found dropped PE file which has not been started or loaded
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
One or more processes crash
PE file contains an invalid checksum
PE file contains sections with non-standard names
Queries disk information (often used to detect virtual machines)
Queries information about the installed CPU (vendor, model number etc)
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, 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)
Searches for user specific document files
Sigma detected: Browser Started with Remote Debugging
Sigma detected: CurrentVersion Autorun Keys Modification
Sigma detected: Suspicious Execution of Powershell with Base64
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Stores files to the Windows start menu directory
Suricata IDS alerts with low severity for network traffic
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Uses taskkill to terminate processes
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara detected Credential Stealer
Classification
- System is w10x64
- file.exe (PID: 6780 cmdline:
"C:\Users\ user\Deskt op\file.ex e" MD5: 1E33E63C356AC4032505C4A3F7157786) - skotes.exe (PID: 4192 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\abc3bc 1985\skote s.exe" MD5: 1E33E63C356AC4032505C4A3F7157786)
- skotes.exe (PID: 3220 cmdline:
C:\Users\u ser\AppDat a\Local\Te mp\abc3bc1 985\skotes .exe MD5: 1E33E63C356AC4032505C4A3F7157786)
- skotes.exe (PID: 5844 cmdline:
C:\Users\u ser\AppDat a\Local\Te mp\abc3bc1 985\skotes .exe MD5: 1E33E63C356AC4032505C4A3F7157786) - Fwkdsz.exe (PID: 1748 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\100333 4001\Fwkds z.exe" MD5: 54F4EBCE5C56BF86C5948D89BA8C875F) - powershell.exe (PID: 1720 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -enc QQBkA GQALQBNAHA AUAByAGUAZ gBlAHIAZQB uAGMAZQAgA C0ARQB4AGM AbAB1AHMAa QBvAG4AUAB hAHQAaAAgA EMAOgBcAFU AcwBlAHIAc wBcAGoAbwB uAGUAcwBcA EEAcABwAEQ AYQB0AGEAX ABMAG8AYwB hAGwAXABUA GUAbQBwAFw AMQAwADAAM wAzADMANAA wADAAMQBcA EYAdwBrAGQ AcwB6AC4AZ QB4AGUAOwA gAEEAZABkA C0ATQBwAFA AcgBlAGYAZ QByAGUAbgB jAGUAIAAtA EUAeABjAGw AdQBzAGkAb wBuAFAAcgB vAGMAZQBzA HMAIABDADo AXABVAHMAZ QByAHMAXAB qAG8AbgBlA HMAXABBAHA AcABEAGEAd ABhAFwATAB vAGMAYQBsA FwAVABlAG0 AcABcADEAM AAwADMAMwA zADQAMAAwA DEAXABGAHc AawBkAHMAe gAuAGUAeAB lADsAQQBkA GQALQBNAHA AUAByAGUAZ gBlAHIAZQB uAGMAZQAgA C0ARQB4AGM AbAB1AHMAa QBvAG4AUAB hAHQAaAAgA EMAOgBcAFU AcwBlAHIAc wBcAGoAbwB uAGUAcwBcA EEAcABwAEQ AYQB0AGEAX ABSAG8AYQB tAGkAbgBnA FwARABpAGE AZwBUAHIAY QBjAGsALgB lAHgAZQA7A CAAQQBkAGQ ALQBNAHAAU AByAGUAZgB lAHIAZQBuA GMAZQAgAC0 ARQB4AGMAb AB1AHMAaQB vAG4AUAByA G8AYwBlAHM AcwAgAEMAO gBcAFUAcwB lAHIAcwBcA GoAbwBuAGU AcwBcAEEAc ABwAEQAYQB 0AGEAXABSA G8AYQBtAGk AbgBnAFwAR ABpAGEAZwB UAHIAYQBjA GsALgBlAHg AZQA= MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 3448 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - WmiPrvSE.exe (PID: 1308 cmdline:
C:\Windows \system32\ wbem\wmipr vse.exe -s ecured -Em bedding MD5: 60FF40CFD7FB8FE41EE4FE9AE5FE1C51) - MSBuild.exe (PID: 5856 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\MSB uild.exe" MD5: 8FDF47E0FF70C40ED3A17014AEEA4232) - WerFault.exe (PID: 1228 cmdline:
C:\Windows \SysWOW64\ WerFault.e xe -u -p 5 856 -s 114 4 MD5: C31336C1EFC2CCB44B4326EA793040F2) - 24da741fb6.exe (PID: 1236 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\100334 3001\24da7 41fb6.exe" MD5: 53014E825FFABBC0AC8A0AB1AEC76EE7) - 33QCBA038D3K2VF7AVBGWF5K.exe (PID: 8016 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\33QCBA 038D3K2VF7 AVBGWF5K.e xe" MD5: 01DDF9CC770BC558B2FAFFA43B9B5B12) - 0d8313073f.exe (PID: 4136 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\100334 4001\0d831 3073f.exe" MD5: 90CD56BFD041977B953EC0D6AC7F665C) - chrome.exe (PID: 6368 cmdline:
"C:\\Progr am Files\\ Google\\Ch rome\\Appl ication\\c hrome.exe" --remote- debugging- port=9229 --profile- directory= "Default" MD5: 45DE480806D1B5D462A7DDE4DCEFC4E4) - chrome.exe (PID: 2104 cmdline:
"C:\Progra m Files\Go ogle\Chrom e\Applicat ion\chrome .exe" --ty pe=utility --utility -sub-type= network.mo jom.Networ kService - -lang=en-U S --servic e-sandbox- type=none --mojo-pla tform-chan nel-handle =2528 --fi eld-trial- handle=225 2,i,122472 5429258022 2694,14534 5724862048 27192,2621 44 /prefet ch:8 MD5: 45DE480806D1B5D462A7DDE4DCEFC4E4) - 203f60e481.exe (PID: 5300 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\100334 5001\203f6 0e481.exe" MD5: C1FA8AC639C1D531A4C7CF311C056AB0) - taskkill.exe (PID: 5848 cmdline:
taskkill / F /IM fire fox.exe /T MD5: CA313FD7E6C2A778FFD21CFB5C1C56CD) - conhost.exe (PID: 2696 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - taskkill.exe (PID: 2908 cmdline:
taskkill / F /IM chro me.exe /T MD5: CA313FD7E6C2A778FFD21CFB5C1C56CD) - conhost.exe (PID: 3608 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - taskkill.exe (PID: 5416 cmdline:
taskkill / F /IM msed ge.exe /T MD5: CA313FD7E6C2A778FFD21CFB5C1C56CD) - conhost.exe (PID: 5740 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - taskkill.exe (PID: 6280 cmdline:
taskkill / F /IM oper a.exe /T MD5: CA313FD7E6C2A778FFD21CFB5C1C56CD) - conhost.exe (PID: 940 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - taskkill.exe (PID: 6404 cmdline:
taskkill / F /IM brav e.exe /T MD5: CA313FD7E6C2A778FFD21CFB5C1C56CD) - conhost.exe (PID: 6472 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - firefox.exe (PID: 6868 cmdline:
"C:\Progra m Files\Mo zilla Fire fox\firefo x.exe" --k iosk "http s://youtub e.com/acco unt?=https ://account s.google.c om/v3/sign in/challen ge/pwd" -- no-default -browser-c heck --dis able-popup -blocking MD5: C86B1BE9ED6496FE0E0CBE73F81D8045) - 8a0ff7e068.exe (PID: 5652 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\100334 6001\8a0ff 7e068.exe" MD5: 01DDF9CC770BC558B2FAFFA43B9B5B12)
- wscript.exe (PID: 3812 cmdline:
"C:\Window s\System32 \WScript.e xe" "C:\Us ers\user\A ppData\Roa ming\Micro soft\Windo ws\Start M enu\Progra ms\Startup \DiagTrack .vbs" MD5: A47CBE969EA935BDD3AB568BB126BC80)
- firefox.exe (PID: 6844 cmdline:
"C:\Progra m Files\Mo zilla Fire fox\firefo x.exe" --k iosk https ://youtube .com/accou nt?=https: //accounts .google.co m/v3/signi n/challeng e/pwd --no -default-b rowser-che ck --disab le-popup-b locking -- attempting -deelevati on MD5: C86B1BE9ED6496FE0E0CBE73F81D8045) - firefox.exe (PID: 6864 cmdline:
"C:\Progra m Files\Mo zilla Fire fox\firefo x.exe" --k iosk https ://youtube .com/accou nt?=https: //accounts .google.co m/v3/signi n/challeng e/pwd --no -default-b rowser-che ck --disab le-popup-b locking MD5: C86B1BE9ED6496FE0E0CBE73F81D8045) - firefox.exe (PID: 6128 cmdline:
"C:\Progra m Files\Mo zilla Fire fox\firefo x.exe" -co ntentproc --channel= 2324 -pare ntBuildID 2023092723 2528 -pref sHandle 22 72 -prefMa pHandle 22 64 -prefsL en 25359 - prefMapSiz e 237879 - win32kLock edDown -ap pDir "C:\P rogram Fil es\Mozilla Firefox\b rowser" - {81e41cdf- 9cd7-4e6b- 84b6-f4048 2f74e4a} 6 864 "\\.\p ipe\gecko- crash-serv er-pipe.68 64" 253dc7 6dd10 sock et MD5: C86B1BE9ED6496FE0E0CBE73F81D8045) - firefox.exe (PID: 6564 cmdline:
"C:\Progra m Files\Mo zilla Fire fox\firefo x.exe" -co ntentproc --channel= 4036 -pare ntBuildID 2023092723 2528 -pref sHandle 44 00 -prefMa pHandle 38 16 -prefsL en 26374 - prefMapSiz e 237879 - appDir "C: \Program F iles\Mozil la Firefox \browser" - {67daa88 9-b47a-41d 1-9d91-f60 d147d808b} 6864 "\\. \pipe\geck o-crash-se rver-pipe. 6864" 253e e211110 rd d MD5: C86B1BE9ED6496FE0E0CBE73F81D8045)
- svchost.exe (PID: 2044 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p -s B ITS MD5: B7F884C1B74A263F746EE12A5F7C9F6A)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Lumma Stealer, LummaC2 Stealer | Lumma Stealer (aka LummaC2 Stealer) is an information stealer written in C language that has been available through a Malware-as-a-Service (MaaS) model on Russian-speaking forums since at least August 2022. It is believed to have been developed by the threat actor "Shamel", who goes by the alias "Lumma". Lumma Stealer primarily targets cryptocurrency wallets and two-factor authentication (2FA) browser extensions, before ultimately stealing sensitive information from the victim's machine. Once the targeted data is obtained, it is exfiltrated to a C2 server via HTTP POST requests using the user agent "TeslaBrowser/5.5"." The stealer also features a non-resident loader that is capable of delivering additional payloads via EXE, DLL, and PowerShell. | No Attribution |
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Amadey | Amadey is a botnet that appeared around October 2018 and is being sold for about $500 on Russian-speaking hacking forums. It periodically sends information about the system and installed AV software to its C2 server and polls to receive orders from it. Its main functionality is that it can load other payloads (called "tasks") for all or specifically targeted computers compromised by the malware. | No Attribution |
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Stealc | Stealc is an information stealer advertised by its presumed developer Plymouth on Russian-speaking underground forums and sold as a Malware-as-a-Service since January 9, 2023. According to Plymouth's statement, stealc is a non-resident stealer with flexible data collection settings and its development is relied on other prominent stealers: Vidar, Raccoon, Mars and Redline.Stealc is written in C and uses WinAPI functions. It mainly targets date from web browsers, extensions and Desktop application of cryptocurrency wallets, and from other applications (messengers, email clients, etc.). The malware downloads 7 legitimate third-party DLLs to collect sensitive data from web browsers, including sqlite3.dll, nss3.dll, vcruntime140.dll, mozglue.dll, freebl3.dll, softokn3.dll and msvcp140.dll. It then exfiltrates the collected information file by file to its C2 server using HTTP POST requests. | No Attribution |
{"C2 url": "http://185.215.113.206/6c4adf523b719729.php", "Botnet": "tale"}
{"C2 url": ["founpiuer.store", "navygenerayk.store", "fadehairucw.store", "necklacedmny.store", "crisiwarny.store", "scriptyprefej.store", "presticitpo.store", "thumbystriw.store"], "Build id": "4SD0y4--legendaryy"}
{"C2 url": "185.215.113.43/Zu7JuNko/index.php", "Version": "4.42", "Install Folder": "abc3bc1985", "Install File": "skotes.exe"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Stealc_1 | Yara detected Stealc | Joe Security | ||
JoeSecurity_LummaCStealer_3 | Yara detected LummaC Stealer | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Amadey_2 | Yara detected Amadey\'s stealer DLL | Joe Security | ||
JoeSecurity_Amadey_2 | Yara detected Amadey\'s stealer DLL | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_Stealc | Yara detected Stealc | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
Click to see the 20 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_Amadey_2 | Yara detected Amadey\'s stealer DLL | Joe Security | ||
JoeSecurity_Amadey_2 | Yara detected Amadey\'s stealer DLL | Joe Security | ||
JoeSecurity_Amadey_2 | Yara detected Amadey\'s stealer DLL | Joe Security | ||
Click to see the 2 entries |
System Summary |
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Source: | Author: Florian Roth (Nextron Systems), Markus Neis, Sander Wiebing: |
Source: | Author: Florian Roth (Nextron Systems): |