Analysis

  • max time kernel
    4294211s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • submitted
    02-03-2022 02:36

General

  • Target

    a5f51f376a2c7a84ff6220a95302f777e9f234b163bcc886f88fd0c223adeb13.exe

  • Size

    243KB

  • MD5

    6cf7f288325e1e49d6b936b8a8eaff9e

  • SHA1

    2f49f2b04147b91e20966ac82fd64f1f340854a7

  • SHA256

    a5f51f376a2c7a84ff6220a95302f777e9f234b163bcc886f88fd0c223adeb13

  • SHA512

    9152e5437dfea3117d29624929cbfce5ab2dda96838d1236e59c30b5934505a67fc136ebe2586161290d07ef90339355cab78cd6248f8d5e15abf7232d3dcdbd

Malware Config

Signatures

  • Bazar Loader 3 IoCs

    Detected loader normally used to deploy BazarBackdoor malware.

  • BazarBackdoor 3 IoCs

    Stealthy backdoor targeting corporate networks, believed to be developed by Trickbot's authors.

  • suricata: ET MALWARE Possible Compromised Host AnubisNetworks Sinkhole Cookie Value Snkz

    suricata: ET MALWARE Possible Compromised Host AnubisNetworks Sinkhole Cookie Value Snkz

  • Tries to connect to .bazar domain 1 IoCs

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

  • Looks up external IP address via web service 2 IoCs

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

  • Modifies system certificate store 2 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a5f51f376a2c7a84ff6220a95302f777e9f234b163bcc886f88fd0c223adeb13.exe
    "C:\Users\Admin\AppData\Local\Temp\a5f51f376a2c7a84ff6220a95302f777e9f234b163bcc886f88fd0c223adeb13.exe"
    1⤵
    • Bazar Loader
    • BazarBackdoor
    • Modifies system certificate store
    PID:1676

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1676-54-0x000007FEFC4B1000-0x000007FEFC4B3000-memory.dmp
    Filesize

    8KB