Resubmissions

23/02/2024, 14:43

240223-r3j4macb7110

23/02/2024, 14:22

240223-rp3ntaba2910

23/02/2024, 11:10

240223-m9t5ysff6310

Analysis

  • max time kernel
    22s
  • max time network
    21s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/02/2024, 14:43

General

  • Target
    2024-02-23_ead34dbd568dab561004d36d88990158_virlock.exe
  • Size 565KB
  • Sample240223-r3j4macb71
  • SHA256 43664f03b4fb5ceb748682c4c8313e45096405b9f6f6ae113d952d104d651736
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • UAC bypass 3 TTPs 1 IoCs
  • Executes dropped EXE 3 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 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Modifies registry key 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 21 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-23_ead34dbd568dab561004d36d88990158_virlock.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-23_ead34dbd568dab561004d36d88990158_virlock.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1052
    • C:\Users\Admin\QgkUMsMw\QCMAogAM.exe
      "C:\Users\Admin\QgkUMsMw\QCMAogAM.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      PID:2980
    • C:\ProgramData\PKgsYQcw\hYAQEcEM.exe
      "C:\ProgramData\PKgsYQcw\hYAQEcEM.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      PID:3196
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\setup.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4648
      • C:\Users\Admin\AppData\Local\Temp\setup.exe
        C:\Users\Admin\AppData\Local\Temp\setup.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:1856
    • C:\Windows\SysWOW64\reg.exe
      reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v HideFileExt /t REG_DWORD /d 1
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies registry key
      PID:3136
    • C:\Windows\SysWOW64\reg.exe
      reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /d 0 /t REG_DWORD /f
      2⤵
      • UAC bypass
      • Modifies registry key
      PID:2452
    • C:\Windows\SysWOW64\reg.exe
      reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v Hidden /t REG_DWORD /d 2
      2⤵
      • Modifies registry key
      PID:736
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4256

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        guest.bmp.exe

        • Path C:\ProgramData\Microsoft\User Account Pictures\guest.bmp.exe
        • Size 698KB
        • SHA256 519b6fa861447bdbdc4c56d64c0afd508e3bf582834dd899016d69db755f6593
        • MD5 SHA1 SHA512 SSDEEP

        user-32.png.exe

        • Path C:\ProgramData\Microsoft\User Account Pictures\user-32.png.exe
        • Size 113KB
        • SHA256 7b53afaae1cd5d8d697b883ad046be38913131b358633b6490cb70cdf3034fff
        • MD5 SHA1 SHA512 SSDEEP

        user-48.png.exe

        • Path C:\ProgramData\Microsoft\User Account Pictures\user-48.png.exe
        • Size 110KB
        • SHA256 781e3a5e071c2820a68d4f49bbcc95497d725d468834f2fcb4422926bd24ce9f
        • MD5 SHA1 SHA512 SSDEEP

        user.bmp.exe

        • Path C:\ProgramData\Microsoft\User Account Pictures\user.bmp.exe
        • Size 700KB
        • SHA256 4ee6c92fb5a2d18a29382d9cf530ee2e63f3e18956c7f6d3705d56518b4606d3
        • MD5 SHA1 SHA512 SSDEEP

        user.png.exe

        • Path C:\ProgramData\Microsoft\User Account Pictures\user.png.exe
        • Size 117KB
        • SHA256 4c5521c348735fd543558bcf067c39df429b6a1f21236bd839d6966ce677eefd
        • MD5 SHA1 SHA512 SSDEEP

        hYAQEcEM.exe

        • Path C:\ProgramData\PKgsYQcw\hYAQEcEM.exe
        • Size 110KB
        • SHA256 1e365ec41eaec79b58631f676771c82d6284a5906cb92e4aaa7a1e812e806713
        • MD5 SHA1 SHA512 SSDEEP

        vcredist_x86.exe

        • Path C:\ProgramData\Package Cache\{33d1fd90-4274-48a1-9bc1-97e33d9c2d6f}\vcredist_x86.exe
        • Size 556KB
        • SHA256 b6800196d370944550737a7736342e04f832667b2ff3a4d66fd5a5f4093e8b09
        • MD5 SHA1 SHA512 SSDEEP

        vcredist_x86.exe

        • Path C:\ProgramData\Package Cache\{61087a79-ac85-455c-934d-1fa22cc64f36}\vcredist_x86.exe
        • Size 565KB
        • SHA256 d0fc29f7d18e2fc364c195c5e808e28a3705327bcf969bbc1ddb7e17aaf5128b
        • MD5 SHA1 SHA512 SSDEEP

        vcredist_x64.exe

        • Path C:\ProgramData\Package Cache\{ca67548a-5ebe-413a-b50c-4b9ceb6d66c6}\vcredist_x64.exe
        • Size 556KB
        • SHA256 6096caebc19112de20b2cc911fef7dcd087ebb42151eeddf1b8e22804964ea96
        • MD5 SHA1 SHA512 SSDEEP

        vcredist_x64.exe

        • Path C:\ProgramData\Package Cache\{ef6b00ec-13e1-4c25-9064-b2f383cb8412}\vcredist_x64.exe
        • Size 566KB
        • SHA256 d0fffa53ff2fdab381131259120e082428c75926197bb907511063e6a69a52e6
        • MD5 SHA1 SHA512 SSDEEP

        AppBlue.png.exe

        • Path C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\AppBlue.png.exe
        • Size 115KB
        • SHA256 77d9442e961a4add9e728e8933cd5873a9182218241abd15b86ac79347443db7
        • MD5 SHA1 SHA512 SSDEEP

        AppErrorWhite.png.exe

        • Path C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\AppErrorWhite.png.exe
        • Size 119KB
        • SHA256 59c155336d21c7c4a7ab7c79b439e1586c91ff20d5e224cd6a326b7273f127d0
        • MD5 SHA1 SHA512 SSDEEP

        alertIcon.png.exe

        • Path C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\alertIcon.png.exe
        • Size 111KB
        • SHA256 124521713c4f98d83a465c98edba43296867858466482d6d42dd6232c450c8e4
        • MD5 SHA1 SHA512 SSDEEP

        blurrect.png.exe

        • Path C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\images\blurrect.png.exe
        • Size 110KB
        • SHA256 c2d3404acf51451b9274567f8cfdfa6c0b8c46a92dabccbb86dffde1423a8930
        • MD5 SHA1 SHA512 SSDEEP

        AIck.exe

        • Path C:\Users\Admin\AppData\Local\Temp\AIck.exe
        • Size 139KB
        • SHA256 6eb1ec94d3bff72f9cedf703315bbf6946fb35983cca651f69e36add735eb17a
        • MD5 SHA1 SHA512 SSDEEP

        CMES.exe

        • Path C:\Users\Admin\AppData\Local\Temp\CMES.exe
        • Size 114KB
        • SHA256 c1a1720bb8a7c06676e41ea2977f0e3842e5b963e59f64ea7626f477414c71ce
        • MD5 SHA1 SHA512 SSDEEP

        Doga.exe

        • Path C:\Users\Admin\AppData\Local\Temp\Doga.exe
        • Size 114KB
        • SHA256 a991042a13285a0fa99e230073d3a61b72fa15c6d75249842b9042cfb4282254
        • MD5 SHA1 SHA512 SSDEEP

        IMIu.exe

        • Path C:\Users\Admin\AppData\Local\Temp\IMIu.exe
        • Size 115KB
        • SHA256 1274768ecc4fe9767e3a7e9e616e0a4ebc999fd3726a7aafa1fb868b0834796a
        • MD5 SHA1 SHA512 SSDEEP

        IQwu.exe

        • Path C:\Users\Admin\AppData\Local\Temp\IQwu.exe
        • Size 121KB
        • SHA256 38e924575dc706963fda8fbe302d5c46b6f7bd93c844e2d707931e686e2fb413
        • MD5 SHA1 SHA512 SSDEEP

        OMAQ.exe

        • Path C:\Users\Admin\AppData\Local\Temp\OMAQ.exe
        • Size 720KB
        • SHA256 1d6ae3f8a373d3bbccf6e2e90893d8ae7ef2dd438965c695cbdbc85aa57abe02
        • MD5 SHA1 SHA512 SSDEEP

        OkII.exe

        • Path C:\Users\Admin\AppData\Local\Temp\OkII.exe
        • Size 237KB
        • SHA256 6af78a1cf913e2e378bf980b28846cfb343889ce55507220e2b078ad885f1c0c
        • MD5 SHA1 SHA512 SSDEEP

        QosU.exe

        • Path C:\Users\Admin\AppData\Local\Temp\QosU.exe
        • Size 119KB
        • SHA256 f1e838f2cda6b74ada2890383e17b761c0f1938109bf954693e8d9f142392b71
        • MD5 SHA1 SHA512 SSDEEP

        WsAe.exe

        • Path C:\Users\Admin\AppData\Local\Temp\WsAe.exe
        • Size 149KB
        • SHA256 0b38d7b484061bbede6f81ab435b9543ac39b5101de81d05ac22213111735bbb
        • MD5 SHA1 SHA512 SSDEEP

        XgAK.exe

        • Path C:\Users\Admin\AppData\Local\Temp\XgAK.exe
        • Size 744KB
        • SHA256 77f08bdef88cd2cdfb67fa275abcc2289ceeae905a15117ddeb6c5f976849dfe
        • MD5 SHA1 SHA512 SSDEEP

        aUAs.exe

        • Path C:\Users\Admin\AppData\Local\Temp\aUAs.exe
        • Size 155KB
        • SHA256 c4fd998911a0f55895b42c4ad692114563bd554b8d71b2af9278abdab9d463c8
        • MD5 SHA1 SHA512 SSDEEP

        aoIA.exe

        • Path C:\Users\Admin\AppData\Local\Temp\aoIA.exe
        • Size 122KB
        • SHA256 55336c3f60713796d031f7f599fc020004fb9d67e289abdf196370a0c57afdc9
        • MD5 SHA1 SHA512 SSDEEP

        cEwC.exe

        • Path C:\Users\Admin\AppData\Local\Temp\cEwC.exe
        • Size 115KB
        • SHA256 2dbd85907607ec6a5a5e13c49dc06252d38ecc4ee1b8f2b5e634856b8e46cb13
        • MD5 SHA1 SHA512 SSDEEP

        fUkw.exe

        • Path C:\Users\Admin\AppData\Local\Temp\fUkw.exe
        • Size 120KB
        • SHA256 98008b62b9c735ca8c13f5d3bf4df1befbfc9bdf98fdd04969e0248ce3b5570f
        • MD5 SHA1 SHA512 SSDEEP

        jUky.ico

        • Path C:\Users\Admin\AppData\Local\Temp\jUky.ico
        • Size 4KB
        • SHA256 57e72b9591e318a17feb74efa1262e9222814ad872437094734295700f669563
        • MD5 SHA1 SHA512 SSDEEP

        mQIS.exe

        • Path C:\Users\Admin\AppData\Local\Temp\mQIS.exe
        • Size 235KB
        • SHA256 34fe26a443d8b5ebd3823d28f11c3bd2f823ad2a7ce819bfe875309cd68cb4b1
        • MD5 SHA1 SHA512 SSDEEP

        rcws.exe

        • Path C:\Users\Admin\AppData\Local\Temp\rcws.exe
        • Size 721KB
        • SHA256 6a6c3984be6a18966f179f03e7b8d48e684b66596c1a0b206df1e82b3e546f0f
        • MD5 SHA1 SHA512 SSDEEP

        sIIu.exe

        • Path C:\Users\Admin\AppData\Local\Temp\sIIu.exe
        • Size 484KB
        • SHA256 ca552a7da2adfb6e9602768caefa7b85d278420b859bb49dbe32891456086c49
        • MD5 SHA1 SHA512 SSDEEP

        setup.exe

        • Path C:\Users\Admin\AppData\Local\Temp\setup.exe
        • Size 453KB
        • SHA256 d2893c55259772b554cb887d3e2e1f9c67f5cd5abac2ab9f4720dec507cdd290
        • MD5 SHA1 SHA512 SSDEEP

        sgwC.exe

        • Path C:\Users\Admin\AppData\Local\Temp\sgwC.exe
        • Size 110KB
        • SHA256 7ec6de5cd1c2bc3a41d9e3d666edd26a9d8b004d0426090fd52fd83a758ea309
        • MD5 SHA1 SHA512 SSDEEP

        tYwA.exe

        • Path C:\Users\Admin\AppData\Local\Temp\tYwA.exe
        • Size 743KB
        • SHA256 ac35054ad25f2c55f7107b71c9945d573a7ad6f65e3705a3b045eacca8cbd7a0
        • MD5 SHA1 SHA512 SSDEEP

        twMi.exe

        • Path C:\Users\Admin\AppData\Local\Temp\twMi.exe
        • Size 129KB
        • SHA256 a786b9798aa9778cceba9a2fc053a36547d0eca036f93dda84981816f5bdc69a
        • MD5 SHA1 SHA512 SSDEEP

        wYIW.exe

        • Path C:\Users\Admin\AppData\Local\Temp\wYIW.exe
        • Size 122KB
        • SHA256 5616eed8ef1daaabd77496f84c694c32d6c2c18bb70c13f7568e61d05b41bdb8
        • MD5 SHA1 SHA512 SSDEEP

        wkUC.ico

        • Path C:\Users\Admin\AppData\Local\Temp\wkUC.ico
        • Size 4KB
        • SHA256 701a17a9ee5c9340bae4f0810f103d1f0ca5c03141e0da826139d5b7397a6fb3
        • MD5 SHA1 SHA512 SSDEEP

        yEUe.exe

        • Path C:\Users\Admin\AppData\Local\Temp\yEUe.exe
        • Size 1.1MB
        • SHA256 8970d864ee4b9d236aa6c8d781c8319e8df16a4e46fea1e0b797cc5c0ef55afb
        • MD5 SHA1 SHA512 SSDEEP

        yIgI.exe

        • Path C:\Users\Admin\AppData\Local\Temp\yIgI.exe
        • Size 142KB
        • SHA256 4f5521a38f3690b9ec88eec9d690ec89f3f8918168bc666ce760f7f27fc6f14c
        • MD5 SHA1 SHA512 SSDEEP

        zMoi.exe

        • Path C:\Users\Admin\AppData\Local\Temp\zMoi.exe
        • Size 563KB
        • SHA256 4925a4becef95cc3843f29095eac39cabcccfd5928877f228bd0fb12a18e6350
        • MD5 SHA1 SHA512 SSDEEP

        QCMAogAM.exe

        • Path C:\Users\Admin\QgkUMsMw\QCMAogAM.exe
        • Size 111KB
        • SHA256 7c35adc1d0490297cae58c274d471f6f904148e6371ac5157fae71feb2901713
        • MD5 SHA1 SHA512 SSDEEP

        memory/1052-17-0x0000000000400000-0x000000000048F000-memory.dmp

        memory/1052-0-0x0000000000400000-0x000000000048F000-memory.dmp

        memory/2980-5-0x0000000000400000-0x000000000041D000-memory.dmp

        memory/3196-14-0x0000000000400000-0x000000000041D000-memory.dmp

        memory/4256-60-0x000001948BA70000-0x000001948BA71000-memory.dmp

        memory/4256-56-0x000001948BA70000-0x000001948BA71000-memory.dmp

        memory/4256-49-0x000001948BA70000-0x000001948BA71000-memory.dmp

        memory/4256-51-0x000001948BA70000-0x000001948BA71000-memory.dmp

        memory/4256-52-0x000001948BA70000-0x000001948BA71000-memory.dmp

        memory/4256-59-0x000001948BA70000-0x000001948BA71000-memory.dmp

        memory/4256-58-0x000001948BA70000-0x000001948BA71000-memory.dmp

        memory/4256-57-0x000001948BA70000-0x000001948BA71000-memory.dmp

        memory/4256-61-0x000001948BA70000-0x000001948BA71000-memory.dmp

        memory/4256-62-0x000001948BA70000-0x000001948BA71000-memory.dmp