Analysis

  • max time kernel
    119s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    13-12-2021 23:51

General

  • Target

    RT.msi

  • Size

    2.2MB

  • MD5

    55b75999aeba3ccfd5309b39d7880baa

  • SHA1

    293a2c7cd6ab5851563d868d549e9a2dfd00842c

  • SHA256

    e07e5f0295deb4c8a77519cf41d915046d6962db92b7e667f68267d30e0b8399

  • SHA512

    59a8bad2040260f13ec4171e5ce6f28b04b1d6705aed4d7c9a9270c472062095bd4ec8cdc38fe962a55b8f8bc0b8f5afc4565d99f3dffee87dc12b107f9fd76f

Malware Config

Signatures

  • Detect Numando Payload 3 IoCs
  • Numando

    Numando is a banking trojan/backdoor targeting Latin America which uses Youtube and Pastebin for C2 communications.

  • Blocklisted process makes network request 7 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 11 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 48 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops file in Windows directory 15 IoCs
  • Modifies Internet Explorer settings 1 TTPs 50 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 62 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\RT.msi
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1400
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:520
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 7DDEC1C2030F712422DC95A791188531
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:1480
    • C:\Windows\Installer\MSICEDE.tmp
      "C:\Windows\Installer\MSICEDE.tmp" /DontWait "C:\Users\Admin\AppData\Roaming\WEFHWE0-FWEUY-F9WUEFWWEF\BND0WEPWEJFC-9UEWFF\Object.exe"
      2⤵
      • Executes dropped EXE
      PID:776
  • C:\Users\Admin\AppData\Roaming\WEFHWE0-FWEUY-F9WUEFWWEF\BND0WEPWEJFC-9UEWFF\Object.exe
    "C:\Users\Admin\AppData\Roaming\WEFHWE0-FWEUY-F9WUEFWWEF\BND0WEPWEJFC-9UEWFF\Object.exe"
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" %1 "https://bit.ly/3DvoVCc"
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1012
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1012 CREDAT:275457 /prefetch:2
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:1676

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/776-77-0x00000000001E0000-0x00000000001E2000-memory.dmp

    Filesize

    8KB

  • memory/1400-54-0x000007FEFC521000-0x000007FEFC523000-memory.dmp

    Filesize

    8KB

  • memory/1480-57-0x0000000076C91000-0x0000000076C93000-memory.dmp

    Filesize

    8KB

  • memory/1740-81-0x00000000005B0000-0x0000000000EBF000-memory.dmp

    Filesize

    9.1MB

  • memory/1740-91-0x00000000001E0000-0x00000000001E1000-memory.dmp

    Filesize

    4KB