Analysis

  • max time kernel
    145s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    12-03-2024 23:11

General

  • Target

    c457e8760ba768b3a9746831c366ac1a.dll

  • Size

    1.2MB

  • MD5

    c457e8760ba768b3a9746831c366ac1a

  • SHA1

    94fec4b344f00e5f890c6c850743c80f98659a72

  • SHA256

    85a19656e73c4a3343b476bc823437a58df84e25a631fb543eb7bf876a9aef31

  • SHA512

    830bdd275b1d929e892ff4e474cde20550b88f82ac59354f40ecb007eebc04492a512044783559020016002bb81665d5162c638934af95d8ad9aa4566d885dbd

  • SSDEEP

    24576:0Wpc+G43nwqthqmmldpXoQ5IyXdLrgvHmrM:8+n3Hthqm9qgkM

Malware Config

Signatures

  • Bazar Loader

    Detected loader normally used to deploy BazarBackdoor malware.

  • Bazar/Team9 Loader payload 3 IoCs
  • Blocklisted process makes network request 13 IoCs
  • Tries to connect to .bazar domain 3 IoCs

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

  • Unexpected DNS network traffic destination 3 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.

  • Modifies system certificate store 2 TTPs 2 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\c457e8760ba768b3a9746831c366ac1a.dll,#1
    1⤵
    • Blocklisted process makes network request
    • Modifies system certificate store
    PID:2904

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2904-0-0x0000000001DD0000-0x0000000001E0B000-memory.dmp
    Filesize

    236KB

  • memory/2904-1-0x000007FEF5D00000-0x000007FEF5E82000-memory.dmp
    Filesize

    1.5MB

  • memory/2904-3-0x0000000001DD0000-0x0000000001E0B000-memory.dmp
    Filesize

    236KB