Overview

overview

10

Static

static

10

e1e998d2a1...77.exe

windows7-x64

10

e1e998d2a1...77.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2024, 04:10

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General

  • Target
    e1e998d2a1344541e0dae824f53098b12dba805abb9ae462bd7d2165f9480e77.exe
  • Size 91KB
  • Sample240530-erwxtsfa42
  • SHA256 e1e998d2a1344541e0dae824f53098b12dba805abb9ae462bd7d2165f9480e77
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
evasionpersistenceupx

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
    persistence
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
    evasion
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
    evasion
  • UPX dump on OEP (original entry point) 18 IoCs
  • Disables RegEdit via registry modification 2 IoCs
    evasion
  • Disables use of System Restore points 1 TTPs
    evasion
  • Executes dropped EXE 7 IoCs
  • Modifies system executable filetype association 2 TTPs 13 IoCs
    persistence
  • UPX packed file 18 IoCs

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

    upx
  • Adds Run key to start application 2 TTPs 5 IoCs
    persistence
  • Drops file in System32 directory 6 IoCs
  • Drops file in Windows directory 2 IoCs
  • Modifies Control Panel 4 IoCs
    evasion
  • Modifies registry class 15 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • System policy modification 1 TTPs 4 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\e1e998d2a1344541e0dae824f53098b12dba805abb9ae462bd7d2165f9480e77.exe
    "C:\Users\Admin\AppData\Local\Temp\e1e998d2a1344541e0dae824f53098b12dba805abb9ae462bd7d2165f9480e77.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Modifies visibility of file extensions in Explorer
    • Modifies visiblity of hidden/system files in Explorer
    • Disables RegEdit via registry modification
    • Modifies system executable filetype association
    • Adds Run key to start application
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:680
    • C:\Windows\xk.exe
      C:\Windows\xk.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:1824
    • C:\Windows\SysWOW64\IExplorer.exe
      C:\Windows\system32\IExplorer.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:1228
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:2812
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:4936
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:1400
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:440
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:1260

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        CSRSS.EXE
        • Path C:\Users\Admin\AppData\Local\WINDOWS\CSRSS.EXE
        • Size 91KB
        • SHA256 631d28674af0dea1fd00d5d590b567de9a000dda092b86bd2545f9616d777ab1
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        LSASS.EXE
        • Path C:\Users\Admin\AppData\Local\WINDOWS\LSASS.EXE
        • Size 91KB
        • SHA256 72d7b80ad2783d8ff89f4726760a90d9d94a18a3f2172396bcd259dc1eba969b
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        SERVICES.EXE
        • Path C:\Users\Admin\AppData\Local\WINDOWS\SERVICES.EXE
        • Size 91KB
        • SHA256 ff981d3180ea7924d792d4f4cf22d3673730b4f88459d4823f566549657f1204
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        SMSS.EXE
        • Path C:\Users\Admin\AppData\Local\WINDOWS\SMSS.EXE
        • Size 91KB
        • SHA256 990fcd0960539ac38a02c29a852a6753d7c49b40962fe001f8428fe17fa1d1c0
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        winlogon.exe
        • Path C:\Users\Admin\AppData\Local\winlogon.exe
        • Size 91KB
        • SHA256 e1e998d2a1344541e0dae824f53098b12dba805abb9ae462bd7d2165f9480e77
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        WINLOGON.EXE
        • Path C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE
        • Size 91KB
        • SHA256 0e9edca7deeece9e3afae98773d54b6fc3bb707a9e50e62c03c53f7cf1e2050f
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        IExplorer.exe
        • Path C:\Windows\SysWOW64\IExplorer.exe
        • Size 91KB
        • SHA256 c9fbe754fee35e7cd2c883565fa40d2f702f5aa00911c778790410d89015c781
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        xk.exe
        • Path C:\Windows\xk.exe
        • Size 91KB
        • SHA256 eb4d1f87f2108073bf8848c5e3e436495ec3724fcdbeecf0e326aa2afcb9bd86
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/440-146-0x0000000000400000-0x000000000042F000-memory.dmp
        Download

        memory/680-155-0x0000000000400000-0x000000000042F000-memory.dmp
        Download

        memory/680-0-0x0000000000400000-0x000000000042F000-memory.dmp
        Download

        memory/1228-120-0x0000000000400000-0x000000000042F000-memory.dmp
        Download

        memory/1228-115-0x0000000000400000-0x000000000042F000-memory.dmp
        Download

        memory/1260-153-0x0000000000400000-0x000000000042F000-memory.dmp
        Download

        memory/1400-140-0x0000000000400000-0x000000000042F000-memory.dmp
        Download

        memory/1824-114-0x0000000000400000-0x000000000042F000-memory.dmp
        Download

        memory/2812-126-0x0000000000400000-0x000000000042F000-memory.dmp
        Download

        memory/4936-132-0x0000000000400000-0x000000000042F000-memory.dmp
        Download