Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    09/09/2026, 04:49

General

  • Target
    2026-09-07_2bb1a22f9196d5780693a0e0baef1677_amadey_coinminer_cryptolocker_elex_smoke-loader_stealc_stop_tofsee.exe
  • Size 1.1MB
  • Sample260909-ffrdms1zb1
  • SHA256 0b1f74c4487f8d081ae01eae6efa68fd5ff1f19c46f356ffbe40486472b40278
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Stealc

    Stealc is an infostealer written in C++.

  • Detects Stealc stealer Version 3 1 IoCs
  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • UPX dump on OEP (original entry point) 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Unexpected DNS network traffic destination 4 IoCs

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

  • Drops file in System32 directory 17 IoCs
  • UPX packed file 6 IoCs

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

  • 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.

  • Modifies data under HKEY_USERS 9 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-09-07_2bb1a22f9196d5780693a0e0baef1677_amadey_coinminer_cryptolocker_elex_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-07_2bb1a22f9196d5780693a0e0baef1677_amadey_coinminer_cryptolocker_elex_smoke-loader_stealc_stop_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:1912
  • C:\Windows\Syswow64\f74be76d
    C:\Windows\Syswow64\f74be76d
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4708

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        f74be76d

        • Path C:\Windows\SysWOW64\f74be76d
        • Size 1.1MB
        • SHA256 8a4918a5adf27737776a120ffe6e6048d329a766e1dedd37b24950dab48ac73c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1912-0-0x0000000000F70000-0x0000000000FFC000-memory.dmp

        memory/1912-10-0x0000000000F70000-0x0000000000FFC000-memory.dmp

        memory/4708-4-0x0000000000470000-0x00000000004FC000-memory.dmp

        memory/4708-11-0x0000000000470000-0x00000000004FC000-memory.dmp

        memory/4708-32-0x0000000000470000-0x00000000004FC000-memory.dmp