Analysis

  • max time kernel
    127s
  • max time network
    135s
  • platform
    windows10-1703_x64
  • resource
    win10-20231025-en
  • resource tags

    arch:x64arch:x86image:win10-20231025-enlocale:en-usos:windows10-1703-x64system
  • submitted
    13/12/2023, 21:37

General

  • Target

    b02b8ac5bc8420a269b0a43a0e792e59f4c6d2c6c0cd8825558c59ce3b74b86b.exe

  • Size

    1.6MB

  • MD5

    47d99588a42bd1fb9d272c449c4ab9cc

  • SHA1

    d2461d29500a220e26a7408420c191b8c4eed3eb

  • SHA256

    b02b8ac5bc8420a269b0a43a0e792e59f4c6d2c6c0cd8825558c59ce3b74b86b

  • SHA512

    11c31f3947e60bd9e4c7c98cf8057ae701d91f8958b86a0d0d33abccae198a84c70c22762b0d153ea21a6b8142969f45934a2351003abb20d6ec202076710138

  • 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\b02b8ac5bc8420a269b0a43a0e792e59f4c6d2c6c0cd8825558c59ce3b74b86b.exe
    "C:\Users\Admin\AppData\Local\Temp\b02b8ac5bc8420a269b0a43a0e792e59f4c6d2c6c0cd8825558c59ce3b74b86b.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:1828
    • 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:4528
    • 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:4376
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1828 -s 1600
      2⤵
      • Program crash
      PID:2164
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:224
    • \??\c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc
      1⤵
        PID:920

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

              Filesize

              1.6MB

              MD5

              47d99588a42bd1fb9d272c449c4ab9cc

              SHA1

              d2461d29500a220e26a7408420c191b8c4eed3eb

              SHA256

              b02b8ac5bc8420a269b0a43a0e792e59f4c6d2c6c0cd8825558c59ce3b74b86b

              SHA512

              11c31f3947e60bd9e4c7c98cf8057ae701d91f8958b86a0d0d33abccae198a84c70c22762b0d153ea21a6b8142969f45934a2351003abb20d6ec202076710138

            • C:\Users\Admin\AppData\Local\Temp\grandUIAvLUxZOvIIqqf7\information.txt

              Filesize

              3KB

              MD5

              3d7497924c74cd6ec70469ae33a5208c

              SHA1

              c46b09121c86d19396039bb7613700a3f521bb3a

              SHA256

              8e86f5542ff3f2d1c870be0a7f65c958f46432383999bd79ca9af07ce6d04f9c

              SHA512

              dc4d4905869355037aa7ba433f96d55ac6b3cbf42497fb7ccf7ba4bb5de89ed31fcef510bd11716ee487f7bef9354ece751629abb20d677d01b90a871e365a8c

            • C:\Users\Admin\AppData\Local\Temp\posterBoxvLUxZOvIIqqf7\QdX9ITDLyCRBWeb Data

              Filesize

              92KB

              MD5

              5962032f5f9ef10ad7afb6c595abf5c6

              SHA1

              fe47554bacd8ac1f3b9c249eb36c50aa0a8fd241

              SHA256

              0a5f892414b30f17d2a99466c400da50eef364501550d1835578042b084baa1e

              SHA512

              c4fb5d51f9b973f331a381577c7e5df57a92547d8192dfa100f41d0e1f5c1075dc04709372f7de929d433ac2a2b8c432c876744a41718b2005fc3453d2260f8e