Analysis

  • max time kernel
    145s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-01-2024 13:31

General

  • Target

    40fddbbfbb45012b7bf00985547d70fe.dll

  • Size

    1.2MB

  • MD5

    40fddbbfbb45012b7bf00985547d70fe

  • SHA1

    23e0b6b8db4f2d4479df7dd51867474567d480bf

  • SHA256

    bb42fe3d20e3fae9bf0e1be683134b526386cf36e99a6aaed14a08bbfc627294

  • SHA512

    ceda59bcc7c7ae695050419278f6710645d452845bd70f60c3a1f9867e58baf6614852dd22b05f8c49e88a70bf8afe0ef0dae429c31f91431425ded7ba7b072f

  • SSDEEP

    24576:0Wpc+G43nwqthqmmldpXoQ5IyXdLrgvHmrR:8+n3Hthqm9qgkR

Malware Config

Signatures

  • Bazar Loader

    Detected loader normally used to deploy BazarBackdoor malware.

  • Bazar/Team9 Loader payload 3 IoCs
  • Blocklisted process makes network request 14 IoCs
  • Tries to connect to .bazar domain 5 IoCs

    Attempts to lookup or connect to a .bazar domain, used by BazarBackdoor, Trickbot, and potentially others.

  • Unexpected DNS network traffic destination 5 IoCs

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

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\40fddbbfbb45012b7bf00985547d70fe.dll,#1
    1⤵
    • Blocklisted process makes network request
    PID:3344

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3344-0-0x0000012949410000-0x000001294944B000-memory.dmp

    Filesize

    236KB

  • memory/3344-1-0x00007FF9B8860000-0x00007FF9B89E2000-memory.dmp

    Filesize

    1.5MB

  • memory/3344-3-0x0000012949410000-0x000001294944B000-memory.dmp

    Filesize

    236KB