Overview

overview

10

Static

static

3

760132f8e1...79.exe

windows7-x64

10

760132f8e1...79.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-05-2024 23:26

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General

  • Target

    760132f8e1db40b450e994fd7c4815632154b64efbce5f5d2630f8e132c01b79.exe

  • Size

    2.4MB

  • MD5

    303835ac2f30cfb546615279301b8747

  • SHA1

    af5be0dc5d93d0fb6280af079da93367b40ae716

  • SHA256

    760132f8e1db40b450e994fd7c4815632154b64efbce5f5d2630f8e132c01b79

  • SHA512

    c41b582cde40e9352a9906d021ca65a9fc6a2de212a3db82e2b032ae27b217a6fb5caafbbe611fb7485aae674f591744426728436e4e789851b3bed530601f3a

  • SSDEEP

    49152:jxIRJF1HL+VdX68kUOJtTF+TxMoxc1TU+j+dAzGwlrh:jEJF16dX68dOtIuoITsdZ

Score
10/10
stealcvidardiscoveryspywarestealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin
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 12 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. 10 IoCs
  • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 10 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 12 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 10 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 12 IoCs
  • Detects executables containing potential Windows Defender anti-emulation checks 12 IoCs
  • Downloads MZ/PE file
  • 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
  • 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 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\760132f8e1db40b450e994fd7c4815632154b64efbce5f5d2630f8e132c01b79.exe
    "C:\Users\Admin\AppData\Local\Temp\760132f8e1db40b450e994fd7c4815632154b64efbce5f5d2630f8e132c01b79.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2004
    • C:\Users\Admin\AppData\Local\Temp\kat4779.tmp
      C:\Users\Admin\AppData\Local\Temp\kat4779.tmp
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2052
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4779.tmp" & rd /s /q "C:\ProgramData\CBKJJEHCBAKF" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4000
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:808

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

4
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Data from Local System

4
T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\kat4779.tmp
    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

    Download Submit
  • memory/2004-9-0x0000000000400000-0x0000000000678000-memory.dmp
    Filesize

    2.5MB

    Download
  • memory/2004-0-0x00007FFE78D90000-0x00007FFE78F85000-memory.dmp
    Filesize

    2.0MB

    Download
  • memory/2052-22-0x0000000025FF0000-0x000000002624F000-memory.dmp
    Filesize

    2.4MB

    Download
  • memory/2052-37-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2052-3-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2052-18-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2052-19-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2052-7-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2052-36-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2052-8-0x00007FFE78D90000-0x00007FFE78F85000-memory.dmp
    Filesize

    2.0MB

    Download
  • memory/2052-53-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2052-54-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2052-65-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2052-66-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2052-67-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2052-70-0x00007FFE78D90000-0x00007FFE78F85000-memory.dmp
    Filesize

    2.0MB

    Download
  • memory/2052-68-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download