Overview

overview

10

Static

static

keygen-step-4.exe

windows7_x64

10

keygen-step-4.exe

windows10_x64

10

Analysis

  • max time kernel
    133s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    07-05-2021 01:18

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General

  • Target

    keygen-step-4.exe

  • Size

    3.3MB

  • MD5

    c679be2fa8a3ab7a239aa742471ba852

  • SHA1

    73ba03c525f2d759bf3c3d60c4a6e1d75cf33031

  • SHA256

    b67bbcbde3ed2da03e506745e4288ef3d328964dbc8eb22f1f198a973020e5b6

  • SHA512

    9f163dd544ee782dfa98a3d5fe2c3b7e85f92e58052b7eaf36989b07bb1eb31890e9ede07a3b990728f815860aa4ae6212c0df8fd91088d3d52eaa34530c2f9b

Score
10/10
plugxdiscoverypersistencespywarestealertrojanupx

Malware Config

Signatures

  • PlugX

    PlugX is a RAT (Remote Access Trojan) that has been around since 2008.

    trojanplugx
  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Executes dropped EXE 6 IoCs
  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Loads dropped DLL 24 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Checks installed software on the system 1 TTPs

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

    discovery
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

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

  • Drops file in System32 directory 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Kills process with taskkill 1 IoCs
    evasion
  • Modifies data under HKEY_USERS 30 IoCs
  • Modifies registry class 10 IoCs
  • Modifies system certificate store 2 TTPs 7 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 38 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Windows\system32\services.exe
    C:\Windows\system32\services.exe
    1⤵
      PID:468
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k netsvcs
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Suspicious use of SetThreadContext
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:872
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k SystemNetworkService
        2⤵
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        • Modifies registry class
        PID:1516
    • C:\Users\Admin\AppData\Local\Temp\keygen-step-4.exe
      "C:\Users\Admin\AppData\Local\Temp\keygen-step-4.exe"
      1⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1944
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\jg6_6asg.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\jg6_6asg.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:1676
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\askinstall20.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\askinstall20.exe"
        2⤵
        • Executes dropped EXE
        • Modifies system certificate store
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:532
        • C:\Windows\SysWOW64\cmd.exe
          cmd.exe /c taskkill /f /im chrome.exe
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1964
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /f /im chrome.exe
            4⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1084
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Full Version.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Full Version.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1672
        • C:\Windows\SysWOW64\rundll32.exe
          "C:\Windows\System32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\install.dll",install
          3⤵
          • Loads dropped DLL
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:996
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\gcttt.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\gcttt.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Modifies system certificate store
        • Suspicious use of WriteProcessMemory
        PID:696
        • C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe
          C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe /scookiestxt C:\Users\Admin\AppData\Local\Temp\fj4ghga23_fsa.txt
          3⤵
          • Executes dropped EXE
          PID:628
        • C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe
          C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe /scookiestxt C:\Users\Admin\AppData\Local\Temp\fj4ghga23_fsa.txt
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          PID:1076

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/872-113-0x00000000007E0000-0x000000000082B000-memory.dmp

      Filesize

      300KB

      Download

    • memory/872-114-0x0000000000EA0000-0x0000000000F10000-memory.dmp

      Filesize

      448KB

      Download

    • memory/996-111-0x00000000008F0000-0x00000000009F1000-memory.dmp

      Filesize

      1.0MB

      Download

    • memory/996-112-0x0000000000A00000-0x0000000000A5C000-memory.dmp

      Filesize

      368KB

      Download

    • memory/996-110-0x0000000010000000-0x0000000010002000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1516-116-0x00000000004A0000-0x0000000000510000-memory.dmp

      Filesize

      448KB

      Download

    • memory/1516-126-0x000007FEFBFB1000-0x000007FEFBFB3000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1516-127-0x00000000027D0000-0x00000000028D1000-memory.dmp

      Filesize

      1.0MB

      Download

    • memory/1944-60-0x0000000076691000-0x0000000076693000-memory.dmp

      Filesize

      8KB

      Download