Analysis

  • max time kernel
    120s
  • max time network
    150s
  • platform
    windows10-1703_x64
  • resource
    win10-20231129-en
  • resource tags

    arch:x64arch:x86image:win10-20231129-enlocale:en-usos:windows10-1703-x64system
  • submitted
    13/12/2023, 23:32

General

  • Target

    4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe

  • Size

    1.6MB

  • MD5

    02dc5249be8e536161a443a119aa781b

  • SHA1

    8f808253f7a6451b76fb9e8f3515572868992002

  • SHA256

    4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8

  • SHA512

    b3fd530ae5c7f8f9fc09d9c39dae5304a83ea9ee021d5e8a5bf1ffe1e1e33dda9d5eddd119bbfc32b3c9bcb1ee81206876cd1bc2a4eec780196239405c5c482a

  • 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\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.exe
    "C:\Users\Admin\AppData\Local\Temp\4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8.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:400
    • 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:4532
    • 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:3140
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 400 -s 1564
      2⤵
      • Program crash
      PID:3572
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:4136
    • \??\c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc
      1⤵
        PID:4620

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

              Filesize

              1.6MB

              MD5

              02dc5249be8e536161a443a119aa781b

              SHA1

              8f808253f7a6451b76fb9e8f3515572868992002

              SHA256

              4a4d0d6d93ceaa7cf5854267a616ae0297b9a11ad45541f5f954dbabecb02dd8

              SHA512

              b3fd530ae5c7f8f9fc09d9c39dae5304a83ea9ee021d5e8a5bf1ffe1e1e33dda9d5eddd119bbfc32b3c9bcb1ee81206876cd1bc2a4eec780196239405c5c482a

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

              Filesize

              3KB

              MD5

              e1ce00097c882afa32aa61fef7a4e8f1

              SHA1

              abbe19e445653472d7266248c55d90c164da3461

              SHA256

              ade308efb098b889ced8070ecf4f4423ce1771f342f74f295ef156f4bbcc627e

              SHA512

              badb7a724b94a0e1a408a94e930dbd5a172cfa0047e292f26aa5941e37c0d558a250c19f64e3c6cf46b0337ac7ce28ee031a649c13976330f92f8d8bb6b2e024

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

              Filesize

              92KB

              MD5

              d540e45d4e0edb6aab5ed14cc52f1fa5

              SHA1

              0c9279b204416dfa86ee22993bd3325b5bc762b1

              SHA256

              ddd7cbb13ec9dca8859d1a0f54d3f326c0097a8d2809636d96d2e4d9cfa86153

              SHA512

              3dc3b50b4948f522f4746a0ef63cdc40995dad3a3ac901b277a37296a33eee2977121f7aa529d9ef7f0cb878c6e15fac6c5570f1e5f73e73b5379633bd0caf9f