Analysis

  • max time kernel
    121s
  • max time network
    114s
  • platform
    windows10-1703_x64
  • resource
    win10-20231020-en
  • resource tags

    arch:x64arch:x86image:win10-20231020-enlocale:en-usos:windows10-1703-x64system
  • submitted
    13/12/2023, 21:36

General

  • Target

    bb98ddfc569c38ba2d52a7b6da60129fa9a01f1198c7adbd4c12e0a4eb2f780d.exe

  • Size

    1.6MB

  • MD5

    1bd531249f2fa052c371f72ac7e1d034

  • SHA1

    3265f546c36a50d21aaf65e765702e895608f72d

  • SHA256

    bb98ddfc569c38ba2d52a7b6da60129fa9a01f1198c7adbd4c12e0a4eb2f780d

  • SHA512

    aed88bc161b4c9a7e3335dc0ba90c600f46a96a3f4ba01a915d76639f3f3b2b1ffc2ba7ab76130bce89888ce57b0966bd697e2ed20cf0eb53d7729bc43b489ce

  • 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 1 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\bb98ddfc569c38ba2d52a7b6da60129fa9a01f1198c7adbd4c12e0a4eb2f780d.exe
    "C:\Users\Admin\AppData\Local\Temp\bb98ddfc569c38ba2d52a7b6da60129fa9a01f1198c7adbd4c12e0a4eb2f780d.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:4252
    • 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:2996
    • 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:4536
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4252 -s 1584
      2⤵
      • Program crash
      PID:5076
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:4572
    • \??\c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc
      1⤵
        PID:3076

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

              Filesize

              1.6MB

              MD5

              1bd531249f2fa052c371f72ac7e1d034

              SHA1

              3265f546c36a50d21aaf65e765702e895608f72d

              SHA256

              bb98ddfc569c38ba2d52a7b6da60129fa9a01f1198c7adbd4c12e0a4eb2f780d

              SHA512

              aed88bc161b4c9a7e3335dc0ba90c600f46a96a3f4ba01a915d76639f3f3b2b1ffc2ba7ab76130bce89888ce57b0966bd697e2ed20cf0eb53d7729bc43b489ce

            • C:\Users\Admin\AppData\Local\Temp\grandUIAhCBR9tdLjvOKz\information.txt

              Filesize

              3KB

              MD5

              2d910440dd2c1501d46f16f31080b695

              SHA1

              fc716d36c31090215c1b08592085a2fc82f5a2e6

              SHA256

              2d15bdd51539d3d01d3432b0689879a7647996dfbf0794897864b8edd49d9576

              SHA512

              f5f6584caa6cc78e9d34f744bfda7f91d32e1727e07644910b5d2475444e5800abd19213d30534c3c003e761b4ceec09f4065b6f045acce480ace31886ac8b1c

            • C:\Users\Admin\AppData\Local\Temp\posterBoxhCBR9tdLjvOKz\QdX9ITDLyCRBWeb Data

              Filesize

              92KB

              MD5

              3f194152deb86dd24c32d81e7749d57e

              SHA1

              b1c3b2d10013dfd65ef8d44fd475ac76e1815203

              SHA256

              9cad93e2e9da675749e0e07f1b61d65ab1333b17a82b9daeaac035646dcbc5aa

              SHA512

              c4e922f8c3a304d2faf7148c47f202e5062c419ff0d1330b1626f3e2077642e850377a531fe7ac7f935f22b1b64cfab5169305d6ad79fc8bda49dbff37f98fbf