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Windows
Analysis Report
YrxiR3yCLm.exe
Overview
General Information
Sample name: | YrxiR3yCLm.exerenamed because original name is a hash value |
Original sample name: | 8e9ea8e0e87ddaecdbb57823ead16033.exe |
Analysis ID: | 1581234 |
MD5: | 8e9ea8e0e87ddaecdbb57823ead16033 |
SHA1: | 55a9f08b8cb50a2712f74ade216571f823c0a1fd |
SHA256: | aea1e74825e2d187e04a81bb5ce56593f5769c4b86218e5fc820d900801abdb4 |
Tags: | exeuser-abuse_ch |
Infos: | |
Detection
LummaC
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Detected unpacking (changes PE section rights)
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Yara detected LummaC Stealer
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Hides threads from debuggers
Leaks process information
LummaC encrypted strings found
Machine Learning detection for dropped file
Machine Learning detection for sample
PE file contains section with special chars
Sample uses string decryption to hide its real strings
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)
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 the current process is being debugged
Contains capabilities to detect virtual machines
Contains functionality for read data from the clipboard
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to read the clipboard data
Contains functionality to record screenshots
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Dropped file seen in connection with other malware
Drops PE files
Entry point lies outside standard sections
Found inlined nop instructions (likely shell or obfuscated code)
Found potential string decryption / allocating functions
HTTP GET or POST without a user agent
IP address seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
PE file contains an invalid checksum
PE file contains sections with non-standard names
Queries the volume information (name, serial number etc) of a device
Sample file is different than original file name gathered from version info
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w10x64
- YrxiR3yCLm.exe (PID: 6508 cmdline:
"C:\Users\ user\Deskt op\YrxiR3y CLm.exe" MD5: 8E9EA8E0E87DDAECDBB57823EAD16033) - LummaC2.exe (PID: 4480 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\LummaC 2.exe" MD5: 607000C61FCB5A41B8D511B5ED7625D4) - Set-up.exe (PID: 2364 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\Set-up .exe" MD5: 2A99036C44C996CEDEB2042D389FE23C)
- 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 |
{"C2 url": ["censeractersj.click", "slipperyloo.lat", "talkynicer.lat", "wordyfindy.lat", "bashfulacid.lat", "curverpluch.lat", "tentabatte.lat", "manyrestro.lat", "shapestickyr.lat"], "Build id": "Fppr10--Indus2"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_LummaCStealer_2 | Yara detected LummaC Stealer | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
MALWARE_Win_DLInjector04 | Detects downloader / injector | ditekSHen |
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⊘No Sigma rule has matched
⊘No Suricata rule has matched
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Virustotal: | Perma Link | ||
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Source: | String decryptor: |
Source: | Binary or memory string: | memstr_8622a720-6 |
Source: | Static PE information: |
Source: | Code function: | 1_2_002FC59C | |
Source: | Code function: | 1_2_002FEEC0 | |
Source: | Code function: | 1_2_002FEEC0 | |
Source: | Code function: | 1_2_002FA800 | |
Source: | Code function: | 1_2_002FA800 | |
Source: | Code function: | 1_2_002FA800 | |
Source: | Code function: | 1_2_002FA800 | |
Source: | Code function: | 1_2_002FB813 | |
Source: | Code function: | 1_2_002EB078 | |
Source: | Code function: | 1_2_002FF040 | |
Source: | Code function: | 1_2_002FF040 | |
Source: | Code function: | 1_2_002E90B0 | |
Source: | Code function: | 1_2_002E90B0 | |
Source: | Code function: | 1_2_002D8095 | |
Source: | Code function: | 1_2_002EC894 | |
Source: | Code function: | 1_2_002E10F3 | |
Source: | Code function: | 1_2_002FE8D0 | |
Source: | Code function: | 1_2_002DD172 | |
Source: | Code function: | 1_2_002FD140 | |
Source: | Code function: | 1_2_002E59B0 | |
Source: | Code function: | 1_2_002DD189 | |
Source: | Code function: | 1_2_002EC984 | |
Source: | Code function: | 1_2_002EC9E9 | |
Source: | Code function: | 1_2_002EC9DA | |
Source: | Code function: | 1_2_002C8A20 | |
Source: | Code function: | 1_2_002E6230 | |
Source: | Code function: | 1_2_002D720B | |
Source: | Code function: | 1_2_002D720B | |
Source: | Code function: | 1_2_002D4A50 | |
Source: | Code function: | 1_2_002D4A50 | |
Source: | Code function: | 1_2_002D4A50 | |
Source: | Code function: | 1_2_002D4A50 | |
Source: | Code function: | 1_2_002D4A50 | |
Source: | Code function: | 1_2_002FDAA0 | |
Source: | Code function: | 1_2_002E8290 | |
Source: | Code function: | 1_2_002D92C0 | |
Source: | Code function: | 1_2_002CD35C | |
Source: | Code function: | 1_2_002FDBB0 | |
Source: | Code function: | 1_2_002FBC14 | |
Source: | Code function: | 1_2_002FBC14 | |
Source: | Code function: | 1_2_002FB46A | |
Source: | Code function: | 1_2_002DCC60 | |
Source: | Code function: | 1_2_002C7440 | |
Source: | Code function: | 1_2_002C7440 | |
Source: | Code function: | 1_2_002F7D00 | |
Source: | Code function: | 1_2_002DD560 | |
Source: | Code function: | 1_2_002D6D52 | |
Source: | Code function: | 1_2_002E9DA0 | |
Source: | Code function: | 1_2_002CEDB4 | |
Source: | Code function: | 1_2_002CEDB4 | |
Source: | Code function: | 1_2_002DAD81 | |
Source: | Code function: | 1_2_002FBCDB | |
Source: | Code function: | 1_2_002E8640 | |
Source: | Code function: | 1_2_002D46C0 | |
Source: | Code function: | 1_2_002E66C0 | |
Source: | Code function: | 1_2_002E26D3 | |
Source: | Code function: | 1_2_002EBF45 | |
Source: | Code function: | 1_2_002F7790 | |
Source: | Code function: | 1_2_002F7790 |
Networking |
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