Overview

overview

10

Static

static

10

2026-08-30...ee.exe

windows10-2004-x64

10

2026-08-30...ee.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    31/08/2026, 12:17

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General

  • Target
    2026-08-30_41e7e9e5b6184cc8ba35ff1c722f0bc6_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
  • Size 768KB
  • Sample260831-pgcrbatyay
  • SHA256 4b2ac334b1f81d425885ba42f63c30bbf0b430b282defd8e361e7af651ecb793
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoverystealcstealerupx

Malware Config

Signatures

  • Family: Stealc

    Stealc is an infostealer written in C++.

    stealerstealc
  • Detects Stealc stealer Version 3 5 IoCs
  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • UPX dump on OEP (original entry point) 11 IoCs
  • Executes dropped EXE 1 IoCs
  • Unexpected DNS network traffic destination 18 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Drops file in System32 directory 13 IoCs
  • UPX packed file 11 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Drops file in Windows directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Modifies data under HKEY_USERS 9 IoCs
  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-30_41e7e9e5b6184cc8ba35ff1c722f0bc6_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-30_41e7e9e5b6184cc8ba35ff1c722f0bc6_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe"
    1⤵
    • Unexpected DNS network traffic destination
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2932
  • C:\Windows\Syswow64\faf9b7bb
    C:\Windows\Syswow64\faf9b7bb
    1⤵
    • Executes dropped EXE
    • Unexpected DNS network traffic destination
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:5312

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        faf9b7bb
        • Path C:\Windows\SysWOW64\faf9b7bb
        • Size 768KB
        • SHA256 1454e309234978f944efcd5c455d880389fcb3a82868188624e21bd5ce11fc16
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/2932-0-0x0000000000540000-0x00000000005C9000-memory.dmp
        Download

        memory/2932-16-0x0000000000540000-0x00000000005C9000-memory.dmp
        Download

        memory/2932-41-0x0000000000540000-0x00000000005C9000-memory.dmp
        Download

        memory/2932-45-0x0000000000540000-0x00000000005C9000-memory.dmp
        Download

        memory/2932-53-0x0000000000540000-0x00000000005C9000-memory.dmp
        Download

        memory/2932-65-0x0000000000540000-0x00000000005C9000-memory.dmp
        Download

        memory/5312-3-0x0000000000950000-0x00000000009D9000-memory.dmp
        Download

        memory/5312-18-0x0000000000950000-0x00000000009D9000-memory.dmp
        Download

        memory/5312-42-0x0000000000950000-0x00000000009D9000-memory.dmp
        Download

        memory/5312-46-0x0000000000950000-0x00000000009D9000-memory.dmp
        Download