Overview

overview

10

Static

static

b8223eef91...c3.exe

windows7_x64

10

b8223eef91...c3.exe

windows10_x64

10

Analysis

  • max time kernel
    146s
  • max time network
    148s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    16/12/2020, 07:35

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General

  • Target
    b8223eef9170e19727391ffec8b7dec3.exe
  • Size 2.6MB
  • Sample201216-t4yj4tbp46
  • SHA256 586db73f0c9c8a852533d500b667211da84f2621c79c2cf19f471655db0cd64f
  • MD5 SHA1 SHA512
Score
10/10
persistencespyware

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Loads dropped DLL 1 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.

    spyware
  • Reads user/profile data of web browsers 2 TTPs

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

    spyware
  • Suspicious use of NtSetInformationThreadHideFromDebugger 27 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b8223eef9170e19727391ffec8b7dec3.exe
    "C:\Users\Admin\AppData\Local\Temp\b8223eef9170e19727391ffec8b7dec3.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1048
    • C:\Users\Admin\AppData\Local\Temp\b8223eef9170e19727391ffec8b7dec3.exe
      -a "C:\Users\Admin\AppData\Local\492d3d62\plg\7Dajypko.json"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:3108
      • C:\Users\Admin\AppData\Local\Temp\b8223eef9170e19727391ffec8b7dec3.exe
        -b -m -d -f -e -r -o -w "C:\Users\Admin\AppData\Local\Temp\unk.xml"
        3⤵
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2124

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/2124-8-0x0000000000400000-0x00000000006EC000-memory.dmp
        Download

        memory/2124-9-0x0000000000400000-0x00000000006EC000-memory.dmp
        Download

        memory/2124-6-0x0000000000400000-0x00000000006EC000-memory.dmp
        Download

        memory/3108-2-0x0000000000400000-0x00000000008D4000-memory.dmp
        Download

        memory/3108-5-0x0000000000400000-0x00000000008D4000-memory.dmp
        Download

        memory/3108-4-0x0000000000400000-0x00000000008D4000-memory.dmp
        Download