Analysis

  • max time kernel
    120s
  • max time network
    106s
  • 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, 23:39

General

  • Target

    e3f5fe0194472c9a2f38eb69d0a532701586fad07de6d94f39dfa060e219ee6e.exe

  • Size

    1.6MB

  • MD5

    0f80fb0884759cc8bf8e74b9bc7c9d75

  • SHA1

    1544e4d4912523fc7a19f16f5ecaab701007d742

  • SHA256

    e3f5fe0194472c9a2f38eb69d0a532701586fad07de6d94f39dfa060e219ee6e

  • SHA512

    4675dd854898d876136701b8364200e58a70ff61c32461a653ae9a46205162433d6745ae86ddfdf4d3a6932c04de479ccf7fbd3216bad3de82b8ae85397f0176

  • 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\e3f5fe0194472c9a2f38eb69d0a532701586fad07de6d94f39dfa060e219ee6e.exe
    "C:\Users\Admin\AppData\Local\Temp\e3f5fe0194472c9a2f38eb69d0a532701586fad07de6d94f39dfa060e219ee6e.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:4960
    • 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:2272
    • 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:1600
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4960 -s 1796
      2⤵
      • Program crash
      PID:3368
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:4184
    • \??\c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc
      1⤵
        PID:3028

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

              Filesize

              1.6MB

              MD5

              0f80fb0884759cc8bf8e74b9bc7c9d75

              SHA1

              1544e4d4912523fc7a19f16f5ecaab701007d742

              SHA256

              e3f5fe0194472c9a2f38eb69d0a532701586fad07de6d94f39dfa060e219ee6e

              SHA512

              4675dd854898d876136701b8364200e58a70ff61c32461a653ae9a46205162433d6745ae86ddfdf4d3a6932c04de479ccf7fbd3216bad3de82b8ae85397f0176

            • C:\Users\Admin\AppData\Local\Temp\grandUIA_QrKbJQLQz6VG\information.txt

              Filesize

              3KB

              MD5

              b3ec0b0f067d88b2193d1f4f5ae1457c

              SHA1

              4464a4346abcdb5cbafa7ad5aa70b6011151f5d7

              SHA256

              530b1e5aa588f29288cd750775356bd568c9eb98ea04bee0d27ba64225fdb540

              SHA512

              c429bbd0c4ae8cb354cb917382e336500568ea8997414bf55d4e9230d2278a27eb0178f6afa6e154d4a68cd7dc3cf7aa8dd7caee810548c60e0cf4dd1eab99a9

            • C:\Users\Admin\AppData\Local\Temp\posterBox_QrKbJQLQz6VG\QdX9ITDLyCRBWeb Data

              Filesize

              92KB

              MD5

              4491efe9c997c2bb294866dab785b4a3

              SHA1

              655c178e979acf42eed324d2883b04ef9ba441c3

              SHA256

              197fb907775f182f8a8f6e00e5b514477a096988d10475a63385647c32b361e7

              SHA512

              57c135d0932dd1e11367d34af7808fd524c87507c263e3190105cbc69a4ac1ab730ed31631c860fbde125b99bd5995af797707fbc7063ceb5b1a1a708916d142