Resubmissions

29/07/2021, 08:36

210729-5h67qwvrd210

27/07/2021, 14:54

210727-v3d6d2mxcs7

Analysis

  • max time kernel
    88s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    27/07/2021, 14:54

General

  • Target
    iCoreBr.jpg.dll
  • Size 1.3MB
  • Sample210727-v3d6d2mxcs
  • SHA256 c882f778e40b276c90d467816deda7605d9955e4302aa6ab7467aeae3f155048
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Bazar Loader

    Detected loader normally used to deploy BazarBackdoor malware.

  • Bazar/Team9 Loader payload 2 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\iCoreBr.jpg.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:468
    • C:\Windows\system32\cmd.exe
      cmd /c ping 127.0.0.1 -n 8 & "C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\iCoreBr.jpg.dll" mscp ahis & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1604
      • C:\Windows\system32\PING.EXE
        ping 127.0.0.1 -n 8
        3⤵
        • Runs ping.exe
        PID:1520
      • C:\Windows\system32\regsvr32.exe
        "C:\Windows\system32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\iCoreBr.jpg.dll" mscp ahis
        3⤵
        • Suspicious behavior: CmdExeWriteProcessMemorySpam
        PID:692

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/468-59-0x000007FEFB531000-0x000007FEFB533000-memory.dmp

        memory/468-60-0x0000000027340000-0x00000000273A4000-memory.dmp

        memory/692-65-0x0000000002010000-0x0000000002074000-memory.dmp