Overview

overview

10

Static

static

3

8657e3df34...db.exe

windows7-x64

10

8657e3df34...db.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    135s
  • max time network
    103s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-05-2024 00:19

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General

  • Target

    8657e3df341135059bc2ee1bd83a650b4621a8f66619c54e7db843dff46a05db.exe

  • Size

    2.4MB

  • MD5

    0898e7dae093d703034b7690c620a1d4

  • SHA1

    eb101867cdac2af77892276f44e92a7927663e0c

  • SHA256

    8657e3df341135059bc2ee1bd83a650b4621a8f66619c54e7db843dff46a05db

  • SHA512

    2b0408620d70819998c45c3faab421c12f981f20f94847ad6e31add14bb264eadb0c7ba66e1a91c1e65da6389c54136301342f3609879393107a62b209c09fca

  • SSDEEP

    49152:jxIRJF1HL+VdX68kU6JtTF+TxMoxc1TU+j+dAzGwlrh:jEJF16dX68d6tIuoITsdZ

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 14 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 13 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 13 IoCs
  • Detects executables containing potential Windows Defender anti-emulation checks 13 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\8657e3df341135059bc2ee1bd83a650b4621a8f66619c54e7db843dff46a05db.exe
    "C:\Users\Admin\AppData\Local\Temp\8657e3df341135059bc2ee1bd83a650b4621a8f66619c54e7db843dff46a05db.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2724
    • C:\Users\Admin\AppData\Local\Temp\kat51C9.tmp
      C:\Users\Admin\AppData\Local\Temp\kat51C9.tmp
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1704
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat51C9.tmp" & rd /s /q "C:\ProgramData\DHJECFCGHIDG" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3960
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:4692

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\kat51C9.tmp
    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

    Download Submit
  • memory/1704-15-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/1704-61-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/1704-17-0x000000001B7D0000-0x000000001BA2F000-memory.dmp
    Filesize

    2.4MB

    Download
  • memory/1704-10-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/1704-32-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/1704-64-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/1704-14-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/1704-33-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/1704-8-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/1704-4-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/1704-63-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/1704-49-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/1704-50-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/1704-62-0x0000000000400000-0x0000000000646000-memory.dmp
    Filesize

    2.3MB

    Download
  • memory/2724-1-0x0000000004050000-0x0000000004199000-memory.dmp
    Filesize

    1.3MB

    Download
  • memory/2724-0-0x00000000022F0000-0x00000000022F1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/2724-9-0x0000000000400000-0x0000000000678000-memory.dmp
    Filesize

    2.5MB

    Download