Overview

overview

10

Static

static

3

81ccbbfcfd...07.exe

windows7-x64

10

81ccbbfcfd...07.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-11-2024 09:54

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General

  • Target

    81ccbbfcfd5e8991632a16d6b4d28b36ef74409773b3e5622cf58cf43638ce07.exe

  • Size

    2.0MB

  • MD5

    31c844530d857c4266248543c40284cc

  • SHA1

    97f7aae6867695e025abdc5e1a7d446d7c5b875f

  • SHA256

    81ccbbfcfd5e8991632a16d6b4d28b36ef74409773b3e5622cf58cf43638ce07

  • SHA512

    8ea1e7b81251c07032a4d78eff745f316e7b9a28ca3e003de63ed4190589d85f8f25ae512e0f4f95b5388d92ed38da954c517b996c381f51c237a437123a482f

  • SSDEEP

    49152:/nNForSjuTyy880u4Ld2ZxkryOFAMsfcCNxvBdVl46Pu:/nNCrSjUvUuxEAMBSrVP

Score
10/10
stealctalecredential_accessdiscoveryevasionspywarestealer

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++.

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

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

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

    Tries to access configuration files associated with programs like FileZilla.

    spywarestealer
  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

    credential_accessstealer
  • Checks installed software on the system 1 TTPs

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

    discovery
  • 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.

    discovery
  • 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
    evasion
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\81ccbbfcfd5e8991632a16d6b4d28b36ef74409773b3e5622cf58cf43638ce07.exe
    "C:\Users\Admin\AppData\Local\Temp\81ccbbfcfd5e8991632a16d6b4d28b36ef74409773b3e5622cf58cf43638ce07.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks computer location settings
    • 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:2364
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\81ccbbfcfd5e8991632a16d6b4d28b36ef74409773b3e5622cf58cf43638ce07.exe" & del "C:\ProgramData\*.dll"" & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3868
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 5
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:1732

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\chrome.dll
    Filesize

    676KB

    MD5

    eda18948a989176f4eebb175ce806255

    SHA1

    ff22a3d5f5fb705137f233c36622c79eab995897

    SHA256

    81a4f37c5495800b7cc46aea6535d9180dadb5c151db6f1fd1968d1cd8c1eeb4

    SHA512

    160ed9990c37a4753fc0f5111c94414568654afbedc05308308197df2a99594f2d5d8fe511fd2279543a869ed20248e603d88a0b9b8fb119e8e6131b0c52ff85

    Download Submit

  • memory/2364-0-0x0000000000860000-0x0000000000F76000-memory.dmp

    Filesize

    7.1MB

    Download

  • memory/2364-1-0x0000000077C54000-0x0000000077C56000-memory.dmp

    Filesize

    8KB

    Download

  • memory/2364-2-0x0000000000861000-0x00000000008C9000-memory.dmp

    Filesize

    416KB

    Download

  • memory/2364-3-0x0000000000860000-0x0000000000F76000-memory.dmp

    Filesize

    7.1MB

    Download

  • memory/2364-10-0x0000000000860000-0x0000000000F76000-memory.dmp

    Filesize

    7.1MB

    Download