Analysis

  • max time kernel
    142s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/12/2023, 21:38

General

  • Target

    6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe

  • Size

    1.6MB

  • MD5

    b03f6d41e1ead18e1877cfe0caa8abc0

  • SHA1

    7aa39c03f631018aebe4947cab6e849cb20b498f

  • SHA256

    6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea

  • SHA512

    b5dd7206ea7e0a72ca1c7f42934f5addc0bc57be11e5e075c77bbe56e9d48dad1b7501f2d88c5310f83a95b5f55417c0df01f8a49b4a880b8a2055fef32790d2

  • SSDEEP

    49152:80ceOGgUYYEmluRKYoFh4kGWusbQnIyDi1E1uonTKi/OjCCNG:1XOGgUYC4RKXFhrusbaDkE1u

Malware Config

Signatures

  • Drops startup file 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.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Looks up external IP address via web service 2 IoCs

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

  • Drops file in System32 directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe
    "C:\Users\Admin\AppData\Local\Temp\6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea.exe"
    1⤵
    • Drops startup file
    • Accesses Microsoft Outlook profiles
    • Adds Run key to start application
    • Drops file in System32 directory
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:1872
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 HR" /sc HOURLY /rl HIGHEST
      2⤵
      • Creates scheduled task(s)
      PID:936
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 LG" /sc ONLOGON /rl HIGHEST
      2⤵
      • Creates scheduled task(s)
      PID:4464
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1872 -s 1716
      2⤵
      • Program crash
      PID:3076
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
    1⤵
      PID:2352
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:3044
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1872 -ip 1872
        1⤵
          PID:708

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

                Filesize

                1.6MB

                MD5

                b03f6d41e1ead18e1877cfe0caa8abc0

                SHA1

                7aa39c03f631018aebe4947cab6e849cb20b498f

                SHA256

                6f39494069b3176cea8f2e351afbf885a2d94bb6211da2168f827939f8f8c3ea

                SHA512

                b5dd7206ea7e0a72ca1c7f42934f5addc0bc57be11e5e075c77bbe56e9d48dad1b7501f2d88c5310f83a95b5f55417c0df01f8a49b4a880b8a2055fef32790d2

              • C:\Users\Admin\AppData\Local\Temp\grandUIAJfmGyuZ0vaSYv\information.txt

                Filesize

                3KB

                MD5

                1e97084400d1f590fe2f5f8ffc2c523c

                SHA1

                de97565d367ef2b41eb14428c7d663cd1e5f13ae

                SHA256

                1fac184ad04ed0fe7962481636364345509c2b2d7c2a0f1307706694e58e72cc

                SHA512

                436f1cfdf823a4e569528e9d0842feb794b81af70fc8ffd5b656ea0135bde22b55fc83244bd4c464de130906fe67d5267d1d98fdeef25bbeec41083b8ee2ce7d

              • C:\Users\Admin\AppData\Local\Temp\posterBoxJfmGyuZ0vaSYv\QdX9ITDLyCRBWeb Data

                Filesize

                92KB

                MD5

                21363921c6943b0ba12e8c3cbd47a7fd

                SHA1

                03bb94c70b12783c4d1962cc7cb9f752ff8a9a54

                SHA256

                2f023e72c5bc9804a60441c14980fa8de30d3118e3d7ce67d8951989b1d90c4a

                SHA512

                3749d95295a281e18f7eca6bdecc45d0d08bc98a4da5d5b8ab21cd5022eed125b1b7a4b96c70ed486750be4eabd4da325ab9a7a1fb497dda4c4f30f9adf8da43

              • C:\Users\Admin\AppData\Local\Temp\posterBoxJfmGyuZ0vaSYv\ZunTSaNJLBVfWeb Data

                Filesize

                116KB

                MD5

                f70aa3fa04f0536280f872ad17973c3d

                SHA1

                50a7b889329a92de1b272d0ecf5fce87395d3123

                SHA256

                8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

                SHA512

                30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84