Resubmissions

01-11-2021 12:31

211101-pp5r3ahha4 10

31-10-2021 09:03

211031-k1bwxacfaq 10

14-10-2021 01:44

211014-b6aflafeg4 10

Analysis

  • max time kernel
    3843s
  • max time network
    3896s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    31-10-2021 09:03

General

  • Target

    029b714502283599a5efb86d41c48fd46751ab727b707bde620e517ec3aa3c39.dll

  • Size

    288KB

  • MD5

    6baeb5a0cd83e3a9878dc4d6d7a5509c

  • SHA1

    93e655f671e4485473f0803787097e1f6a48a64c

  • SHA256

    029b714502283599a5efb86d41c48fd46751ab727b707bde620e517ec3aa3c39

  • SHA512

    dacd268b6bfad43f6c800a4c133b2e9d59477b77a93018d4c1c1cbf7086d5cdb400073bcc06a55a88fa80dd49d4e214332695ef9ed2ff6ea323c26441c8531b8

Malware Config

Signatures

  • Bazar Loader

    Detected loader normally used to deploy BazarBackdoor malware.

  • BazarBackdoor

    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

  • Bazar/Team9 Backdoor payload 3 IoCs
  • Bazar/Team9 Loader payload 3 IoCs
  • Tries to connect to .bazar domain 64 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 5 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\029b714502283599a5efb86d41c48fd46751ab727b707bde620e517ec3aa3c39.dll
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1648
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k UnistackSvcGroup
      2⤵
        PID:620
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\029b714502283599a5efb86d41c48fd46751ab727b707bde620e517ec3aa3c39.dll,StartW {A047C2EB-823A-4085-8024-CFC47A789586}
      1⤵
        PID:672
      • C:\Windows\System32\rundll32.exe
        C:\Windows\System32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\029b714502283599a5efb86d41c48fd46751ab727b707bde620e517ec3aa3c39.dll,StartW {A047C2EB-823A-4085-8024-CFC47A789586}
        1⤵
          PID:3312

        Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/620-120-0x00007FF6565B0000-0x00007FF656602000-memory.dmp

          Filesize

          328KB

        • memory/620-124-0x00007FF6565B0000-0x00007FF656602000-memory.dmp

          Filesize

          328KB

        • memory/672-119-0x000001EE3CBE0000-0x000001EE3CCBC000-memory.dmp

          Filesize

          880KB

        • memory/1648-118-0x0000000002060000-0x000000000213C000-memory.dmp

          Filesize

          880KB

        • memory/3312-126-0x0000018B35020000-0x0000018B350FC000-memory.dmp

          Filesize

          880KB