Analysis

  • max time kernel
    120s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/12/2023, 22:13

General

  • Target

    16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe

  • Size

    1.6MB

  • MD5

    9a1ae9149c28fbdda8c9500fecf85240

  • SHA1

    515549ad978a0ae5690cab33aec8022992cd5cc3

  • SHA256

    16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df

  • SHA512

    4c09e40641b0cf8966cba5b21e740fa94529962a5f0a8b7be1e050fc569e5e39058242f17894bc07f57ee7f6c7437475ed046c1908ca6732a8f60b819bc1d88a

  • 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\16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.exe
    "C:\Users\Admin\AppData\Local\Temp\16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df.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:2784
    • 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:4120
    • 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:2012
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2784 -s 1768
      2⤵
      • Program crash
      PID:3280
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:3408
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:3952
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2784 -ip 2784
        1⤵
          PID:4248

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

                Filesize

                1.6MB

                MD5

                9a1ae9149c28fbdda8c9500fecf85240

                SHA1

                515549ad978a0ae5690cab33aec8022992cd5cc3

                SHA256

                16b1740d2d77fc92f8a2084372f373f465279c08fc90146981302a140db2b8df

                SHA512

                4c09e40641b0cf8966cba5b21e740fa94529962a5f0a8b7be1e050fc569e5e39058242f17894bc07f57ee7f6c7437475ed046c1908ca6732a8f60b819bc1d88a

              • C:\Users\Admin\AppData\Local\Temp\grandUIA91Jj9tVlsgIxg\information.txt

                Filesize

                3KB

                MD5

                a6eba5f0dcb4231987a9592e6513924a

                SHA1

                4f95c3e83f690df0328a9c51ecd72f2b0810ae33

                SHA256

                54f298c122612a0e682ccd233e59394c8b96b7bf53ca94bfdd5733ddd9fefc44

                SHA512

                272839cf469111c4b2d4e31577fa28ccc64ab251b95fdc993440db4f0266afda932489b2e4a09c5d8e9ca6b703ec939eb96fb19327a05230be22f99d3e25ea8c

              • C:\Users\Admin\AppData\Local\Temp\posterBox91Jj9tVlsgIxg\QdX9ITDLyCRBWeb Data

                Filesize

                92KB

                MD5

                64e37b091c8b6c589857ba1adfcfd3c6

                SHA1

                fe3b230fea7286918504d9f57b2d6acb9d01e6ca

                SHA256

                563d8b77316228d681f2e490b1e99d267f4d22aa8c6711ba2ed7f66e6bfbd974

                SHA512

                06668ffebf5f0b9662c8f8814075331933b3225a0eaddea010831cbbb4a7f72cb53274308c0cfe2cb0505ef3997f8e4b5424260a37ba6f069456932dc670fc86

              • C:\Users\Admin\AppData\Local\Temp\posterBox91Jj9tVlsgIxg\ZunTSaNJLBVfWeb Data

                Filesize

                116KB

                MD5

                f70aa3fa04f0536280f872ad17973c3d

                SHA1

                50a7b889329a92de1b272d0ecf5fce87395d3123

                SHA256

                8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

                SHA512

                30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84