Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    04/08/2021, 16:07

General

  • Target
    htmlDefineFunc.jpg.dll
  • Size 254KB
  • Sample210804-2cgqvmlvlx
  • SHA256 d384dfdd90da4645a8d74956534cfcef7fcbbf4ed654e61b3d27384616b4bc4a
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Bazar Loader

    Detected loader normally used to deploy BazarBackdoor malware.

  • Bazar/Team9 Loader payload 2 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 1 IoCs

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

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\htmlDefineFunc.jpg.dll
    1⤵
      PID:636
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\htmlDefineFunc.jpg.dll,StartW 2207200445
      1⤵
        PID:3156

      Network

            MITRE ATT&CK Matrix

            Replay Monitor

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            Downloads

            memory/636-114-0x00000000027D0000-0x000000000295C000-memory.dmp

            memory/3156-115-0x0000020A45860000-0x0000020A459EC000-memory.dmp