Overview

overview

10

Static

static

3

77bd239bad...61.exe

windows7-x64

3

77bd239bad...61.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 01:39

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General

  • Target

    77bd239badeeadd23bb4b87349f1a086a4f4cd6739e7eac2a5713b0003334761.exe

  • Size

    355KB

  • MD5

    fa06e79c2af1d2a9f006fabfed4c0fa2

  • SHA1

    88024c59188a4d45abee7c062dea04c61ce9cdd6

  • SHA256

    77bd239badeeadd23bb4b87349f1a086a4f4cd6739e7eac2a5713b0003334761

  • SHA512

    f3c7405eb47d475d5f6d8dc4193180292ac2b45a6ebc3bc09f480da749d9bc94774eb342cd17ead5e70ed41baacba6d6edd8d99d99c90e48266a15e646ac95f9

  • SSDEEP

    6144:7Suze0A9T1ApHSIZUFfZXBzY5N5PgtuKxO7ME3sssfR+c294Y2q6up:7Tze0A95j385Ntgsf778V+c26up

Score
10/10
stealcvidardiscoveryspywarestealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

  • Detect Vidar Stealer 11 IoCs
    stealer
  • Stealc

    Stealc is an infostealer written in C++.

    stealerstealc
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

    stealervidar
  • Detect binaries embedding considerable number of MFA browser extension IDs. 8 IoCs
  • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 8 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 11 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 8 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 11 IoCs
  • Detects executables containing potential Windows Defender anti-emulation checks 11 IoCs
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

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

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

    spywarestealer
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
    spyware
  • 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 SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 1 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 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\77bd239badeeadd23bb4b87349f1a086a4f4cd6739e7eac2a5713b0003334761.exe
    "C:\Users\Admin\AppData\Local\Temp\77bd239badeeadd23bb4b87349f1a086a4f4cd6739e7eac2a5713b0003334761.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1624
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Checks computer location settings
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4984
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\DHIEHIIEHIEH" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4956
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:3188

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/1624-0-0x00000000009C0000-0x00000000009C1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1624-1-0x00000000009C0000-0x00000000009C1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1624-3-0x00000000009C0000-0x00000000009C1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4984-2-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/4984-7-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/4984-5-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/4984-11-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/4984-12-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/4984-14-0x000000001B270000-0x000000001B4CF000-memory.dmp
    Filesize

    2.4MB

    Download
  • memory/4984-29-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/4984-30-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/4984-46-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/4984-47-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/4984-61-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/4984-62-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download