Analysis

  • max time kernel
    20s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    27-07-2021 21:27

General

  • Target

    mixazed_20210727-123659(1).exe

  • Size

    587KB

  • MD5

    cf0e22b94c52719fe9ea4bf41a78bacd

  • SHA1

    b3065e236f7084da9648fd6e7d835746b9697ef7

  • SHA256

    29f1fb21f3d56e989819a03d69270f700adcc6112f15d63c61bc8b950d08bfbd

  • SHA512

    4174f0b3f45b49cbdc84bedddc18b108394a08d46bbfa6271999d1156ddb9689967742abb63ebdf1de44d3494a832f5afcc7d4d45585bf991028c95406791f82

Malware Config

Signatures

  • Downloads MZ/PE file
  • Deletes itself 1 IoCs
  • Loads dropped DLL 7 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Delays execution with timeout.exe 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\mixazed_20210727-123659(1).exe
    "C:\Users\Admin\AppData\Local\Temp\mixazed_20210727-123659(1).exe"
    1⤵
    • Loads dropped DLL
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:1936
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\mixazed_20210727-123659(1).exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:928
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:1760

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1936-60-0x0000000075201000-0x0000000075203000-memory.dmp

    Filesize

    8KB

  • memory/1936-61-0x0000000000720000-0x00000000007B3000-memory.dmp

    Filesize

    588KB

  • memory/1936-62-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB