Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    16-11-2024 23:30

General

  • Target

    4857eea4cdb38f5a705744faa7a99a13f69cec9f07e2fbdf1fbfc25c32c731a7.exe

  • Size

    2.0MB

  • MD5

    95f58f03abe966d7541f2b73f4e6ba6e

  • SHA1

    09ccd41084a1560f5dba038378e4b07f9ce62798

  • SHA256

    4857eea4cdb38f5a705744faa7a99a13f69cec9f07e2fbdf1fbfc25c32c731a7

  • SHA512

    c4914809c91e806262c1352516a76f1fab5dbfed1432f451d648cd9993f8922198af26a419b89fa2a928b0045b9ccb3f4c063508e0d0ecbc4758094a99b2aeb3

  • SSDEEP

    49152:JvX4dktpeMxOWbPC4A97cdP+fMXQaVYa:JvX4K80B7C/MXQ

Malware Config

Extracted

Family

stealc

Botnet

tale

C2

http://185.215.113.206

Attributes
  • url_path

    /6c4adf523b719729.php

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

  • Stealc family
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Deletes itself 1 IoCs
  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Loads dropped DLL 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4857eea4cdb38f5a705744faa7a99a13f69cec9f07e2fbdf1fbfc25c32c731a7.exe
    "C:\Users\Admin\AppData\Local\Temp\4857eea4cdb38f5a705744faa7a99a13f69cec9f07e2fbdf1fbfc25c32c731a7.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2980
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\4857eea4cdb38f5a705744faa7a99a13f69cec9f07e2fbdf1fbfc25c32c731a7.exe" & del "C:\ProgramData\*.dll"" & exit
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2696
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 5
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2816

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \ProgramData\chrome.dll

    Filesize

    676KB

    MD5

    eda18948a989176f4eebb175ce806255

    SHA1

    ff22a3d5f5fb705137f233c36622c79eab995897

    SHA256

    81a4f37c5495800b7cc46aea6535d9180dadb5c151db6f1fd1968d1cd8c1eeb4

    SHA512

    160ed9990c37a4753fc0f5111c94414568654afbedc05308308197df2a99594f2d5d8fe511fd2279543a869ed20248e603d88a0b9b8fb119e8e6131b0c52ff85

  • memory/2980-0-0x00000000008A0000-0x0000000000FC6000-memory.dmp

    Filesize

    7.1MB

  • memory/2980-1-0x0000000077B50000-0x0000000077B52000-memory.dmp

    Filesize

    8KB

  • memory/2980-2-0x00000000008A1000-0x0000000000909000-memory.dmp

    Filesize

    416KB

  • memory/2980-3-0x00000000008A0000-0x0000000000FC6000-memory.dmp

    Filesize

    7.1MB

  • memory/2980-7-0x00000000008A0000-0x0000000000FC6000-memory.dmp

    Filesize

    7.1MB