Overview

overview

10

Static

static

3

9bf701fa1b...9d.exe

windows7-x64

10

9bf701fa1b...9d.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    134s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 02:01

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General

  • Target

    9bf701fa1bfe9f06c262e262bd6e32fce87d195c6e0ede25dd1e8339bde1b39d.exe

  • Size

    2.1MB

  • MD5

    cce7a4c98202476cb31c37b50e93dae9

  • SHA1

    6547c6de2a4256ec3e5409ea31fee6106fd17d2c

  • SHA256

    9bf701fa1bfe9f06c262e262bd6e32fce87d195c6e0ede25dd1e8339bde1b39d

  • SHA512

    3ae818bf483833725e5cf2a8f15e1a4449f21233d71fec581d470527853b256a18a475ef7b33ec3d46624af9e8e59271fcf84bea27eb3ac3f3ccd08814d017f1

  • SSDEEP

    49152:N6uDuaS9refukJtTF+TxMoxc1TU+j+dAzGwlrh:N6uKb9TktIuoITsdZ

Score
10/10
stealcvidardiscoveryspywarestealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

  • Detect Vidar Stealer 8 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. 4 IoCs
  • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 4 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 7 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 4 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 7 IoCs
  • Detects executables containing potential Windows Defender anti-emulation checks 7 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • 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
  • Checks processor information in registry 2 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9bf701fa1bfe9f06c262e262bd6e32fce87d195c6e0ede25dd1e8339bde1b39d.exe
    "C:\Users\Admin\AppData\Local\Temp\9bf701fa1bfe9f06c262e262bd6e32fce87d195c6e0ede25dd1e8339bde1b39d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2156
    • C:\Users\Admin\AppData\Local\Temp\kat440E.tmp
      C:\Users\Admin\AppData\Local\Temp\kat440E.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:2720

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\kat440E.tmp
    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

    Download Submit

  • memory/2156-0-0x0000000002370000-0x0000000002371000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2156-2-0x0000000003FF0000-0x0000000004139000-memory.dmp

    Filesize

    1.3MB

    Download

  • memory/2156-9-0x0000000000400000-0x000000000061C000-memory.dmp

    Filesize

    2.1MB

    Download

  • memory/2720-4-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2720-10-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2720-8-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2720-14-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2720-15-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2720-17-0x000000001B740000-0x000000001B99F000-memory.dmp

    Filesize

    2.4MB

    Download

  • memory/2720-32-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2720-33-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download