Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/09/2026, 09:16

General

  • Target
    2026-09-10_e9dbb161618e47d0159fd511588bf94a_elex_wannacry.exe
  • Size 429KB
  • Sample260910-k8psqstydw
  • SHA256 e024feee2643da191684e68f5e185df0bba1e44cfee39e5304fa7e0aaddfd53e
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • berbew

C2
  • http://crutop.nu/index.php

  • http://devx.nm.ru/index.php

  • http://ros-neftbank.ru/index.php

  • http://master-x.com/index.php

  • http://www.redline.ru/index.php

  • http://cvv.ru/index.php

  • http://hackers.lv/index.php

  • http://fethard.biz/index.php

  • http://crutop.ru/index.php

  • http://kaspersky.ru/index.php

  • http://color-bank.ru/index.php

  • http://adult-empire.com/index.php

  • http://virus-list.com/index.php

  • http://trojan.ru/index.php

  • http://xware.cjb.net/index.htm

  • http://konfiskat.org/index.htm

  • http://parex-bank.ru/index.htm

  • http://fethard.biz/index.htm

  • http://ldark.nm.ru/index.htm

  • http://gaz-prom.ru/index.htm

Signatures

  • Family: Berbew

    Berbew is a backdoor written in C++.

  • Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 3 IoCs
  • Program crash 1 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 registry class 6 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-09-10_e9dbb161618e47d0159fd511588bf94a_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-10_e9dbb161618e47d0159fd511588bf94a_elex_wannacry.exe"
    1⤵
    • Adds autorun key to be loaded by Explorer.exe on startup
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4128
    • C:\Windows\SysWOW64\Ecefjckj.exe
      C:\Windows\system32\Ecefjckj.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3524
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3524 -s 448
        3⤵
        • Program crash
        PID:2212
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3524 -ip 3524
    1⤵
      PID:5492

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          Ecefjckj.exe

          • Path C:\Windows\SysWOW64\Ecefjckj.exe
          • Size 429KB
          • SHA256 002bdc7d73580054e6a303d6c247c56446d01557e79baf483820b6e968f4e01e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/3524-7-0x0000000000400000-0x000000000046D000-memory.dmp

          memory/3524-12-0x0000000000400000-0x000000000046D000-memory.dmp

          memory/4128-0-0x0000000000400000-0x000000000046D000-memory.dmp

          memory/4128-3-0x0000000000432000-0x0000000000433000-memory.dmp

          memory/4128-11-0x0000000000400000-0x000000000046D000-memory.dmp