Overview

overview

10

Static

static

3

86354354ab...25.exe

windows7-x64

10

86354354ab...25.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    51s
  • max time network
    51s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-06-2024 23:45

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General

  • Target

    86354354ab1f40b0483999181cae6b5e5a23c71c686694862ebc8083ad871525.exe

  • Size

    2.1MB

  • MD5

    6f43cd7d7cfde706c6f66ff53b68a6fc

  • SHA1

    596fc5c3a32dfa00772b008ce4c33ee17681195f

  • SHA256

    86354354ab1f40b0483999181cae6b5e5a23c71c686694862ebc8083ad871525

  • SHA512

    5cfbbd6de72738512fe438b17fdfaec151826a5fa91b6995eeb7cab27cf91c92df6b032d521ce4dccaa7e41c72bf0a85e3b8b294c30467f8f71156b676f4aeea

  • SSDEEP

    24576:Ub4m+sws1qLVNMIlJl6DRKbAlcNRfCKtUfMxVVtes12FxwojKr98YGeGG9iO:UZXOjt6DuAwCKtUkxVVChjHZQs

Score
10/10
stealcvidardiscoveryspywarestealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/r8z0l

https://steamcommunity.com/profiles/76561199698764354
Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Signatures

  • Detect Vidar Stealer 9 IoCs
    stealer
  • Stealc

    Stealc is an infostealer written in C++.

    stealerstealc
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

    stealervidar
  • Detects Windows executables referencing non-Windows User-Agents 8 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 8 IoCs
  • Detects executables containing potential Windows Defender anti-emulation checks 8 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

    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
  • 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 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\86354354ab1f40b0483999181cae6b5e5a23c71c686694862ebc8083ad871525.exe
    "C:\Users\Admin\AppData\Local\Temp\86354354ab1f40b0483999181cae6b5e5a23c71c686694862ebc8083ad871525.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1892
    • C:\Users\Admin\AppData\Local\Temp\kat566D.tmp
      C:\Users\Admin\AppData\Local\Temp\kat566D.tmp
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2280
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat566D.tmp" & rd /s /q "C:\ProgramData\DHIJEHJDHJKE" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2052
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:3592

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\kat566D.tmp
    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

    Download Submit
  • memory/1892-0-0x0000000002390000-0x0000000002391000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1892-1-0x0000000004060000-0x0000000004170000-memory.dmp
    Filesize

    1.1MB

    Download
  • memory/1892-10-0x0000000000400000-0x0000000000629000-memory.dmp
    Filesize

    2.2MB

    Download
  • memory/2280-4-0x0000000000400000-0x0000000000648000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2280-8-0x0000000000400000-0x0000000000648000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2280-9-0x0000000000400000-0x0000000000648000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2280-11-0x0000000000400000-0x0000000000648000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2280-12-0x0000000000400000-0x0000000000648000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2280-14-0x0000000000400000-0x0000000000648000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2280-13-0x0000000000400000-0x0000000000648000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2280-17-0x0000000000400000-0x0000000000648000-memory.dmp
    Filesize

    2.3MB

    Download