Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    11/05/2026, 01:57

General

  • Target
    2026-05-11_c95eade21a0cbfa21a98c861353896ac_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
  • Size 1.4MB
  • Sample260511-cdbzdsc18q
  • SHA256 a4a27c8626092469f08194349a21904499bb7e78a0e3874d996f82a4a848eec2
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • UPX dump on OEP (original entry point) 7 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 5 IoCs
  • UPX packed file 7 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 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-05-11_c95eade21a0cbfa21a98c861353896ac_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-11_c95eade21a0cbfa21a98c861353896ac_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:4640
  • C:\Windows\Syswow64\f1555111
    C:\Windows\Syswow64\f1555111
    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
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:864

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        f1555111

        • Path C:\Windows\SysWOW64\f1555111
        • Size 1.4MB
        • SHA256 ba909383d8b489c50d8f6b0df722208f0614a1a2f1dbfe227963c9a4ee9dcebc
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/864-4-0x0000000000780000-0x0000000000809000-memory.dmp

        memory/864-12-0x0000000000780000-0x0000000000809000-memory.dmp

        memory/864-22-0x0000000000780000-0x0000000000809000-memory.dmp

        memory/4640-0-0x0000000000380000-0x0000000000409000-memory.dmp

        memory/4640-10-0x0000000000380000-0x0000000000409000-memory.dmp

        memory/4640-21-0x0000000000380000-0x0000000000409000-memory.dmp