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Windows
Analysis Report
xlSzrIs5h6.exe
Overview
General Information
Sample name: | xlSzrIs5h6.exerenamed because original name is a hash value |
Original sample name: | 5ee792f4291c31ae596479784dd0d507.exe |
Analysis ID: | 1579982 |
MD5: | 5ee792f4291c31ae596479784dd0d507 |
SHA1: | d3a7db9aba578c58a04effc0a4a7c10a079fccff |
SHA256: | f6721cb88520e593737ba3687fea22820413a46299376ed65496a49d21b491dc |
Tags: | exeuser-abuse_ch |
Infos: | |
Detection
LummaC, Stealc
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
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
Suricata IDS alerts for network traffic
Yara detected LummaC Stealer
Yara detected Powershell download and execute
Yara detected Stealc
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Disable Windows Defender notifications (registry)
Disable Windows Defender real time protection (registry)
Disables Windows Defender Tamper protection
Found many strings related to Crypto-Wallets (likely being stolen)
Hides threads from debuggers
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
Query firmware table information (likely to detect VMs)
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 (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
AV process strings found (often used to terminate AV products)
Abnormal high CPU Usage
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 access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Contains long sleeps (>= 3 min)
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 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
Found large amount of non-executed APIs
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
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
PE file contains an invalid checksum
PE file contains sections with non-standard names
PE file does not import any functions
PE file overlay found
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)
Sample file is different than original file name gathered from version info
Searches for user specific document files
Shows file infection / information gathering behavior (enumerates multiple directory for files)
Sigma detected: Browser Started with Remote Debugging
Suricata IDS alerts with low severity for network traffic
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Yara detected Credential Stealer
Classification
- System is w10x64
- xlSzrIs5h6.exe (PID: 7476 cmdline:
"C:\Users\ user\Deskt op\xlSzrIs 5h6.exe" MD5: 5EE792F4291C31AE596479784DD0D507) - NUQYJTDBZXD8O0ONZO5OO3XW2SFXCQ2.exe (PID: 5408 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\NUQYJT DBZXD8O0ON ZO5OO3XW2S FXCQ2.exe" MD5: 631FDAD3FF8BC1E42A72D22EB14037E9) - 6P8TKH837G2NNHC33ZCWXP9T6IAZH3W.exe (PID: 7292 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\6P8TKH 837G2NNHC3 3ZCWXP9T6I AZH3W.exe" MD5: 54CC74B54E416B5B99BA11FE90829DE2) - chrome.exe (PID: 5444 cmdline:
"C:\Progra m Files\Go ogle\Chrom e\Applicat ion\chrome .exe" --re mote-debug ging-port= 9229 --pro file-direc tory="" MD5: 45DE480806D1B5D462A7DDE4DCEFC4E4) - chrome.exe (PID: 7904 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 =2452 --fi eld-trial- handle=198 0,i,114743 3969558400 8211,80583 8319394092 2979,26214 4 /prefetc h:8 MD5: 45DE480806D1B5D462A7DDE4DCEFC4E4)
- 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 |
---|---|---|---|---|
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/c4becf79229cb002.php"}
{"C2 url": ["slipperyloo.lat", "tentabatte.lat", "observerfry.lat", "talkynicer.lat", "manyrestro.lat", "wordyfindy.lat", "bashfulacid.lat", "curverpluch.lat", "shapestickyr.lat"], "Build id": "PsFKDg--pablo"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Stealc_1 | Yara detected Stealc | Joe Security | ||
JoeSecurity_LummaCStealer_3 | Yara detected LummaC Stealer | Joe Security | ||
JoeSecurity_LummaCStealer_2 | Yara detected LummaC Stealer | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Stealc | Yara detected Stealc | Joe Security | ||
JoeSecurity_Stealc | Yara detected Stealc | Joe Security | ||
JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
JoeSecurity_Stealc | Yara detected Stealc | Joe Security | ||
JoeSecurity_LummaCStealer_3 | Yara detected LummaC Stealer | Joe Security | ||
Click to see the 5 entries |
System Summary |
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Source: | Author: pH-T (Nextron Systems), Nasreddine Bencherchali (Nextron Systems): |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-23T17:39:58.062283+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49730 | 104.21.36.201 | 443 | TCP |
2024-12-23T17:40:00.197739+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49731 | 104.21.36.201 | 443 | TCP |
2024-12-23T17:40:03.144349+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49732 | 104.21.36.201 | 443 | TCP |
2024-12-23T17:40:05.387065+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49733 | 104.21.36.201 | 443 | TCP |
2024-12-23T17:40:08.070456+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49734 | 104.21.36.201 | 443 | TCP |
2024-12-23T17:40:11.167335+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49735 | 104.21.36.201 | 443 | TCP |
2024-12-23T17:40:58.172816+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49764 | 104.21.36.201 | 443 | TCP |
2024-12-23T17:41:13.963342+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49805 | 104.21.36.201 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-23T17:39:58.940816+0100 | 2054653 | 1 | A Network Trojan was detected | 192.168.2.4 | 49730 | 104.21.36.201 | 443 | TCP |
2024-12-23T17:40:01.233995+0100 | 2054653 | 1 | A Network Trojan was detected | 192.168.2.4 | 49731 | 104.21.36.201 | 443 | TCP |
2024-12-23T17:41:15.008656+0100 | 2054653 | 1 | A Network Trojan was detected | 192.168.2.4 | 49805 | 104.21.36.201 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-23T17:39:58.940816+0100 | 2049836 | 1 | A Network Trojan was detected | 192.168.2.4 | 49730 | 104.21.36.201 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-23T17:40:01.233995+0100 | 2049812 | 1 | A Network Trojan was detected | 192.168.2.4 | 49731 | 104.21.36.201 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-23T17:41:16.476182+0100 | 2019714 | 2 | Potentially Bad Traffic | 192.168.2.4 | 49811 | 185.215.113.16 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-23T17:41:34.247018+0100 | 2044245 | 1 | Malware Command and Control Activity Detected | 185.215.113.206 | 80 | 192.168.2.4 | 49848 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-23T17:41:33.934168+0100 | 2044244 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49848 | 185.215.113.206 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-23T17:41:34.568179+0100 | 2044246 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49848 | 185.215.113.206 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-23T17:41:36.051514+0100 | 2044248 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49848 | 185.215.113.206 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-23T17:41:34.689547+0100 | 2044247 | 1 | Malware Command and Control Activity Detected | 185.215.113.206 | 80 | 192.168.2.4 | 49848 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-23T17:40:56.471644+0100 | 2048094 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49735 | 104.21.36.201 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-23T17:41:33.481160+0100 | 2044243 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49848 | 185.215.113.206 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-23T17:41:36.794712+0100 | 2803304 | 3 | Unknown Traffic | 192.168.2.4 | 49848 | 185.215.113.206 | 80 | TCP |
2024-12-23T17:41:52.921138+0100 | 2803304 | 3 | Unknown Traffic | 192.168.2.4 | 49896 | 185.215.113.206 | 80 | TCP |
2024-12-23T17:41:54.933727+0100 | 2803304 | 3 | Unknown Traffic | 192.168.2.4 | 49896 | 185.215.113.206 | 80 | TCP |
2024-12-23T17:41:56.274406+0100 | 2803304 | 3 | Unknown Traffic | 192.168.2.4 | 49896 | 185.215.113.206 | 80 | TCP |
2024-12-23T17:41:57.481213+0100 | 2803304 | 3 | Unknown Traffic | 192.168.2.4 | 49896 | 185.215.113.206 | 80 | TCP |
2024-12-23T17:42:01.066778+0100 | 2803304 | 3 | Unknown Traffic | 192.168.2.4 | 49896 | 185.215.113.206 | 80 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Networking |
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