Analysis

  • max time kernel
    145s
  • max time network
    147s
  • 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, 22:15

General

  • Target

    38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.exe

  • Size

    1.6MB

  • MD5

    e76510d9e8d607a7b5d3788bf40efcc2

  • SHA1

    e99fd54d9b68b69a7dabbd1bcbab286fbd32199e

  • SHA256

    38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8

  • SHA512

    33f1e3206996c621bf491348ac5251382254c4abe173667a547f4dc0757f1498f0ea637251a61b3998e73c62244c8f5e056a65fb9ef7039120aeafed37c42c98

  • 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\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.exe
    "C:\Users\Admin\AppData\Local\Temp\38ff52c88b59d6b8ab2777bb67a44bb35a72cd9b68aaac77b613a462ddf19eb8.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:4048
    • 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:2476
    • 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:4700
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4048 -s 1620
      2⤵
      • Program crash
      PID:4836
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:2472
    • \??\c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc
      1⤵
        PID:4604

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

              Filesize

              1.1MB

              MD5

              17a1ef6fb792b61e5fc080c748eec520

              SHA1

              6b8686eb204358a8d3419cfd63a1eafe88c619f1

              SHA256

              ab367ba5b058797ef3b90bebe273aa298f9c0f9934848b40eb566fc003b2f95a

              SHA512

              b2a282e313b80f8db8b748c457f51c115513c156c11f34e8c38cc413621ff89f6e15030ec4dd531ec1059d104cb8403ee245ef24cb6683152d83fa4fecab6d96

            • C:\Users\Admin\AppData\Local\Temp\grandUIAF04mooeKi3OSz\information.txt

              Filesize

              3KB

              MD5

              e05aabe4efe7c2fd86896fb04e4f8610

              SHA1

              82d4d8ed4067033832df9f6b548363391eafbabe

              SHA256

              9c2a35565e2abec181fb8255f8e1c56169574ff0a04514c4a052a2070a5e3087

              SHA512

              b442b6cc1fa4786a3a607182b03d924b9a8358bfebde6faffe7166e328437dae1210721ad8df6ade275beb7edcb08e80b58f754715da3029900298bb0664bf96

            • C:\Users\Admin\AppData\Local\Temp\posterBoxF04mooeKi3OSz\QdX9ITDLyCRBWeb Data

              Filesize

              92KB

              MD5

              8e8e7137325b5aa4e1206f338a7ccde7

              SHA1

              23a2d46d2812f664d8fff942d493e85afe5f6a27

              SHA256

              bbbd94e3e65b0cf446d3f651f1a557e479c2adc8c0c955a18addd89fcd7ffe25

              SHA512

              1512bc6ad27b5b794d44b2599ace04a325b32726a1c96e2f8a6f75d55c494e65a4cdd1ea241027d693cd54dc049ad4a23b2147bb1a49450b7949cc71dba06233