Analysis

  • max time kernel
    145s
  • max time network
    149s
  • 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, 21:43

General

  • Target

    3d9056fdb45a687b98b3ff51a26d28c5e8ad751107db6381d55450e116f59c68.exe

  • Size

    1.6MB

  • MD5

    4f3b219c3bb5858bf47880a2c9639cfe

  • SHA1

    e98d92ef494988bd143c7667de6fe9d5ba1878a3

  • SHA256

    3d9056fdb45a687b98b3ff51a26d28c5e8ad751107db6381d55450e116f59c68

  • SHA512

    cdc0d9217a1003e751b56c443dfddc3323e0f50bdb94571f5646b61608ed83392dfd42f4deb88fb449cf580aef2e80237a9a08b35871cb23027429260f335cf3

  • 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\3d9056fdb45a687b98b3ff51a26d28c5e8ad751107db6381d55450e116f59c68.exe
    "C:\Users\Admin\AppData\Local\Temp\3d9056fdb45a687b98b3ff51a26d28c5e8ad751107db6381d55450e116f59c68.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:3584
    • 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:5084
    • 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:4812
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3584 -s 1668
      2⤵
      • Program crash
      PID:4924
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:2452
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:4440
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3584 -ip 3584
        1⤵
          PID:3780

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

                Filesize

                1.6MB

                MD5

                4f3b219c3bb5858bf47880a2c9639cfe

                SHA1

                e98d92ef494988bd143c7667de6fe9d5ba1878a3

                SHA256

                3d9056fdb45a687b98b3ff51a26d28c5e8ad751107db6381d55450e116f59c68

                SHA512

                cdc0d9217a1003e751b56c443dfddc3323e0f50bdb94571f5646b61608ed83392dfd42f4deb88fb449cf580aef2e80237a9a08b35871cb23027429260f335cf3

              • C:\Users\Admin\AppData\Local\Temp\grandUIAenS5HjbtFXmN6\information.txt

                Filesize

                3KB

                MD5

                ca745b8704abb2d1be19d61774ea77b7

                SHA1

                36705afc6a40186c935015ce7c1fe5778fd8364d

                SHA256

                c6d7dd6cff02722e27fad9b275ec132b86e1963742f9ae677f08897fa6e14c78

                SHA512

                618468d35430d1836606962da0afa15e65e814dbefad62f8dd108d9d189244a5144f658f2cab866130b7afa55880d781e029ced12cae3386ac3adfc99448be3d

              • C:\Users\Admin\AppData\Local\Temp\posterBoxenS5HjbtFXmN6\QdX9ITDLyCRBWeb Data

                Filesize

                92KB

                MD5

                ce7f99b32cf0d8473697dfcf8fdcc1d7

                SHA1

                001451a4f514f593a55bcf2c50a3a22a926a7231

                SHA256

                8a57ebc2f09a2c28da6e9bfd41e48953d06c99dddc7103df08fefe90d446d350

                SHA512

                20be27aec29b8666654a8ff2ec43738e2727073611fa085a26c672f36c04e42b0688b1c146b23c3d188a2f9a5483b9a057064ae7a293064caba2dbd55bf81767

              • C:\Users\Admin\AppData\Local\Temp\posterBoxenS5HjbtFXmN6\ZunTSaNJLBVfWeb Data

                Filesize

                116KB

                MD5

                f70aa3fa04f0536280f872ad17973c3d

                SHA1

                50a7b889329a92de1b272d0ecf5fce87395d3123

                SHA256

                8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

                SHA512

                30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84