Analysis

  • max time kernel
    148s
  • max time network
    161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-03-2024 02:45

General

  • Target

    f6386e0d3724eb32912521c957a1108862892dcf473f5ab73cbbbaaf29955e9c.exe

  • Size

    645KB

  • MD5

    949ebdc21945246ac2ad1fc10802f102

  • SHA1

    6e1a52f3dfd76fb2f233ce96dc0404678d2d0059

  • SHA256

    f6386e0d3724eb32912521c957a1108862892dcf473f5ab73cbbbaaf29955e9c

  • SHA512

    479e9493102fdbd163a8aac0c5dce421a0290956d1f08df3fac00d258d593821ac3a279f8b9e93d8b7d321a6645205426b744a4ddecd4634572d84b9e444ba99

  • SSDEEP

    12288:JS4CMwbmLrlIz+jo3sbGwUuveksc4RojOUiPmW1/uXZZTrtdiA3HqoQc1ay7:JSOrW93sbGkWc4ajzTZZCA3qoQ

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.flying-fish-cn.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    hkk999@@@

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
  • Detects executables packed with SmartAssembly 1 IoCs
  • Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs
  • Detects executables referencing many file transfer clients. Observed in information stealers 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f6386e0d3724eb32912521c957a1108862892dcf473f5ab73cbbbaaf29955e9c.exe
    "C:\Users\Admin\AppData\Local\Temp\f6386e0d3724eb32912521c957a1108862892dcf473f5ab73cbbbaaf29955e9c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2396
    • C:\Users\Admin\AppData\Local\Temp\f6386e0d3724eb32912521c957a1108862892dcf473f5ab73cbbbaaf29955e9c.exe
      "C:\Users\Admin\AppData\Local\Temp\f6386e0d3724eb32912521c957a1108862892dcf473f5ab73cbbbaaf29955e9c.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3160

Network

MITRE ATT&CK Matrix ATT&CK v13

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Collection

Data from Local System

4
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2396-10-0x00000000749C0000-0x0000000075170000-memory.dmp
    Filesize

    7.7MB

  • memory/2396-17-0x00000000749C0000-0x0000000075170000-memory.dmp
    Filesize

    7.7MB

  • memory/2396-2-0x00000000051F0000-0x0000000005794000-memory.dmp
    Filesize

    5.6MB

  • memory/2396-3-0x0000000004B10000-0x0000000004BA2000-memory.dmp
    Filesize

    584KB

  • memory/2396-4-0x0000000004D80000-0x0000000004D90000-memory.dmp
    Filesize

    64KB

  • memory/2396-5-0x0000000004BC0000-0x0000000004BCA000-memory.dmp
    Filesize

    40KB

  • memory/2396-6-0x0000000004D70000-0x0000000004D82000-memory.dmp
    Filesize

    72KB

  • memory/2396-0-0x0000000000070000-0x0000000000118000-memory.dmp
    Filesize

    672KB

  • memory/2396-8-0x0000000006320000-0x00000000063A2000-memory.dmp
    Filesize

    520KB

  • memory/2396-1-0x00000000749C0000-0x0000000075170000-memory.dmp
    Filesize

    7.7MB

  • memory/2396-7-0x0000000004DC0000-0x0000000004DCC000-memory.dmp
    Filesize

    48KB

  • memory/2396-11-0x0000000004D80000-0x0000000004D90000-memory.dmp
    Filesize

    64KB

  • memory/2396-9-0x0000000007780000-0x000000000781C000-memory.dmp
    Filesize

    624KB

  • memory/3160-18-0x0000000006750000-0x00000000067A0000-memory.dmp
    Filesize

    320KB

  • memory/3160-15-0x0000000004F00000-0x0000000004F10000-memory.dmp
    Filesize

    64KB

  • memory/3160-16-0x0000000005210000-0x0000000005276000-memory.dmp
    Filesize

    408KB

  • memory/3160-14-0x00000000749C0000-0x0000000075170000-memory.dmp
    Filesize

    7.7MB

  • memory/3160-12-0x0000000000400000-0x0000000000440000-memory.dmp
    Filesize

    256KB

  • memory/3160-19-0x00000000749C0000-0x0000000075170000-memory.dmp
    Filesize

    7.7MB

  • memory/3160-20-0x0000000004F00000-0x0000000004F10000-memory.dmp
    Filesize

    64KB