agenttesla

General

Target

Archive.zip
Size

25.8MB
Sample

240912-cvfznswere
MD5

83671dbfab2418604f11993fdc392094
SHA1

5386d1fb94ec2974736a4d8895a2218855ffda69
SHA256

60b290310f67adb0ae186b4b938ca466a6b55653b2519261fa425127f5500a1f
SHA512

9cf982c9b2949f05ea4ab7d27b369924334cb9f8a0b85c374cf08ac059281ecf96c97088bb983f74033a1a8fba01f09c2f3f41ae3a60e7c79db8b6312edd5138
SSDEEP

786432:+r/Da8WA3C5BENmtAWzdVTkvq+GY8NEXcJap4DFEME/:4/W8WAS5BENmtZ1kvq+GYi8pw+T

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
XClient.exe
pastebin_url
https://pastebin.com/raw/2jTT3Lnj

Extracted

Family

revengerat

Botnet

system

C2

yj233.e1.luyouxia.net:20645

Mutex

RV_MUTEX-GeVqDyMpzZJHO

Extracted

Path

C:\Program Files\7-Zip\DECRYPT_YOUR_FILES.HTML

Ransom Note

<html> <head> <style> body{ background-color: #3366CC; } h1 { background-color: RGB(249, 201, 16); } p { background-color: maroon; color: white; } </style> </head> <body> <center> <h1><b> Attention ! All your files </b> have been encrypted. </h1></br> <p> Due encrypting was used algoritm RSA-4096 and AES-256, used for protection military secrets.</br> That means > RESTORE YOU DATA POSIBLE ONLY BUYING decryption passwords from us.</br> Getting a decryption of your files is - SIMPLY task.</br></br> That all what you need:</br> 1. Sent Your ID_KEY on mailbox [email protected] or [email protected] </br> 2. For test, decrypt 2 small files, to be sure that we can decrypt you files.</br> 3. Pay our services. </br> 4. GET software with passwords for decrypt you files.</br> 5. Make measures to prevent this type situations again.</br></br> IMPORTANT(1)</br> Do not try restore files without our help, this is useless, and can destroy you data permanetly.</br></br> IMPORTANT(2) </br> We Cant hold you decryption passwords forever. </br>ALL DECRYPTION PASSWORDS, for what wasn`t we receive reward, will destroy after week of moment of encryption. </p> <p> Your ID_KEY: <br> </p> <table width="1024" border="0"> <tbody> <tr> <td><p>TrEx/K0mZG7CkRIYYz35iwBcBdBcigykhfeQcWnzgVBXGms6gqADEsxFWp6PVUDsc9xZdyGWDKotQ6jgny+RQQCq6qU/NPqU6RxWED3ANLOugZh0+L9so5qeFQdBu8wkHlBCN+cZb4tjBRDiO7Q5c31qW4t4aVn5aPoqygSC/8qZAwq5g4q03YyoSLMuwuouo9kJstb9y3Cq56783ckbEG1/DMCkpZyJB8QZwl5SQ+dboXwaLoChq9ILyii3bqdvV0mC4CWmsUVhu4DelhS8Pr4CBqgGt8mE2AUDC4yu1ja2z//k/53dzaukewGlDYvPsUkliPJw3a+cPcAMZuILKw==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>

Emails

[email protected]

Targets

- Target
  
  Archive.zip
- Size
  
  25.8MB
- MD5
  
  83671dbfab2418604f11993fdc392094
- SHA1
  
  5386d1fb94ec2974736a4d8895a2218855ffda69
- SHA256
  
  60b290310f67adb0ae186b4b938ca466a6b55653b2519261fa425127f5500a1f
- SHA512
  
  9cf982c9b2949f05ea4ab7d27b369924334cb9f8a0b85c374cf08ac059281ecf96c97088bb983f74033a1a8fba01f09c2f3f41ae3a60e7c79db8b6312edd5138
- SSDEEP
  
  786432:+r/Da8WA3C5BENmtAWzdVTkvq+GY8NEXcJap4DFEME/:4/W8WAS5BENmtZ1kvq+GYi8pw+T
Score

10^/10

agenttesla blackmoon modiloader smokeloader xworm agilenet backdoor banker cryptone defense_evasion discovery evasion execution impact keylogger packer persistence ransomware rat spyware stealer trojan upx
- Adds autorun key to be loaded by Explorer.exe on startup
  persistence
- AgentTesla
  Agent Tesla is a remote access tool (RAT) written in visual basic.
  keylogger trojan stealer spyware agenttesla
- Blackmoon, KrBanker
  Blackmoon also known as KrBanker is banking trojan first discovered in early 2014.
  trojan banker blackmoon
- Detect Blackmoon payload
- Detect Xworm Payload
- Disables service(s)
  evasion execution
- ModiLoader, DBatLoader
  ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
  trojan modiloader
- SmokeLoader
  Modular backdoor trojan in use since 2014.
  trojan backdoor smokeloader
- Xworm
  Xworm is a remote access trojan written in C#.
  trojan rat xworm
- AgentTesla payload
- CryptOne packer
  Detects CryptOne packer defined in NCC blogpost.
  cryptone packer
- Deletes shadow copies
  Ransomware often targets backup files to inhibit system recovery.
  ransomware defense_evasion impact execution
- ModiLoader Second Stage
- Stops running service(s)
  evasion execution
- Executes dropped EXE
- Modifies file permissions
  discovery
- Obfuscated with Agile.Net obfuscator
  Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
  agilenet
- UPX packed file
  Detects executables packed with UPX/modified UPX open source packer.
  upx
- Uses the VBS compiler for execution
- Legitimate hosting services abused for malware hosting/C2
- Looks up external IP address via web service
  Uses a legitimate IP lookup service to find the infected system's external IP.
- Drops file in System32 directory
- Suspicious use of SetThreadContext
behavioral1