Analysis

  • max time kernel
    145s
  • max time network
    146s
  • 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, 23:15

General

  • Target

    d357332a9cc50a2602a8669a8d2f8e6a7ce26e5d6d3dd06380106e59a350fbf6.exe

  • Size

    1.6MB

  • MD5

    0345b6dfd16c3444533bb1453a8d8bd7

  • SHA1

    05fbef04ea7eec45ae7c516a1484a1ec1a63ba6c

  • SHA256

    d357332a9cc50a2602a8669a8d2f8e6a7ce26e5d6d3dd06380106e59a350fbf6

  • SHA512

    6aeac99ea4946b9eb7f8f0c64c7b587ff21c6e2c31177e4ceab6713b317c46765b130eb4df8cd6ad263345636100fe2c62e192265b9d18fe71b0bf37c817d272

  • 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\d357332a9cc50a2602a8669a8d2f8e6a7ce26e5d6d3dd06380106e59a350fbf6.exe
    "C:\Users\Admin\AppData\Local\Temp\d357332a9cc50a2602a8669a8d2f8e6a7ce26e5d6d3dd06380106e59a350fbf6.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:1628
    • 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:4656
    • 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:1484
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 1100
      2⤵
      • Program crash
      PID:4308
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
    1⤵
      PID:4320
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:4396
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1628 -ip 1628
        1⤵
          PID:1020

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

                Filesize

                1.6MB

                MD5

                0345b6dfd16c3444533bb1453a8d8bd7

                SHA1

                05fbef04ea7eec45ae7c516a1484a1ec1a63ba6c

                SHA256

                d357332a9cc50a2602a8669a8d2f8e6a7ce26e5d6d3dd06380106e59a350fbf6

                SHA512

                6aeac99ea4946b9eb7f8f0c64c7b587ff21c6e2c31177e4ceab6713b317c46765b130eb4df8cd6ad263345636100fe2c62e192265b9d18fe71b0bf37c817d272

              • C:\Users\Admin\AppData\Local\Temp\grandUIAjTc6AnWvqiu7M\information.txt

                Filesize

                3KB

                MD5

                3be96cd011724afa65293d4dcaf34d5b

                SHA1

                43bdaf96b74778738f2abde877c70d37ef15ece4

                SHA256

                d34e62a308f74855c1114572ae4b0c8334ee72c4f5301b933b503f81f44bf0e5

                SHA512

                b3bab517c9fc4943390de8e0303366986ba78659ee1df410bcda02c473d1839c21b2fec92f9dfa8eef4a64f110db4068ded548a8fb52677eb1f8cbe629a60cb5

              • C:\Users\Admin\AppData\Local\Temp\posterBoxjTc6AnWvqiu7M\QdX9ITDLyCRBWeb Data

                Filesize

                92KB

                MD5

                506305b81ca2e2c270c8cc550edee2df

                SHA1

                370f5306fde08801c87244eac61f9716c863e8f5

                SHA256

                d14e92ff6924f3a4b2b97a83d3016d84377c0cf34c3e59a87d77cbd7ccbe12f6

                SHA512

                a63b5a7c3f89f642978f27017c3428500e43da3f9f94447b3779c90f4b7844b10727a3795a446de8641e3753925df209eb9cab016f2d941e5863e2c8be0903e8

              • C:\Users\Admin\AppData\Local\Temp\posterBoxjTc6AnWvqiu7M\ZunTSaNJLBVfWeb Data

                Filesize

                116KB

                MD5

                f70aa3fa04f0536280f872ad17973c3d

                SHA1

                50a7b889329a92de1b272d0ecf5fce87395d3123

                SHA256

                8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

                SHA512

                30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84