Analysis

  • max time kernel
    126s
  • max time network
    131s
  • 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, 23:22

General

  • Target

    6a8d0215a7bf8a9209a99043b37c4aebf297783bda9afe4fd6f9cf21fc5796a3.exe

  • Size

    1.6MB

  • MD5

    7906e4a5942864c963dcff50b305b794

  • SHA1

    6111f7bed3b998cbacc86e0137e8ba06110073ba

  • SHA256

    6a8d0215a7bf8a9209a99043b37c4aebf297783bda9afe4fd6f9cf21fc5796a3

  • SHA512

    4def7613aee78caccbba9947a98253f1b04a87a1ad22eab7332eb90d9795f11a6ae34c60105b7cceb10573bbbfede9eb9bfc079c5f584b0caacedbc8dea33ecd

  • 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\6a8d0215a7bf8a9209a99043b37c4aebf297783bda9afe4fd6f9cf21fc5796a3.exe
    "C:\Users\Admin\AppData\Local\Temp\6a8d0215a7bf8a9209a99043b37c4aebf297783bda9afe4fd6f9cf21fc5796a3.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:4564
    • 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:4900
    • 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:2088
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4564 -s 1564
      2⤵
      • Program crash
      PID:4828
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:4816
    • \??\c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc
      1⤵
        PID:2248

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

              Filesize

              1.3MB

              MD5

              ba26ad99a055ce8e3cc59a5b277959b5

              SHA1

              dd92623e722287761d2b5a5d09f915e770d19611

              SHA256

              e1c08a2fb6a550bcfe121255b419836ac85b068691ffb865e63e1e8257903f3b

              SHA512

              dde7d0bd6bf4af44cc68b872ba8ec6dcc6aca6c263b36a3869cd221f42f80560074c843cb7ea390bcf31815d2f41eb9be5d128e149d3d7e8b4f7dbbc6e55a480

            • C:\Users\Admin\AppData\Local\Temp\grandUIAYbSuqyVzH3mKC\information.txt

              Filesize

              3KB

              MD5

              ab12dd6915a6f92d541a5ffc8b9c4fb8

              SHA1

              f2be770b8686bcfa649243309eb2ec2d7fe65d15

              SHA256

              80d60b5982d837cae18a849e4ba4b99145d9c21dc6eb0080a01200b60d33fe14

              SHA512

              45be32cbda8ceec2194627e4e2083fbf9b5645a1523bc45c92e8da0ff69bdcecfbf94c77251b3f8c1464efc5ddb8e6cab187d0d23fc42482e62d64964dcf10ef

            • C:\Users\Admin\AppData\Local\Temp\posterBoxYbSuqyVzH3mKC\QdX9ITDLyCRBWeb Data

              Filesize

              92KB

              MD5

              5be96e311859379e2bf53d4ca9b3292c

              SHA1

              7da91b40529fcba8bc68442aa06ea9491fdbb824

              SHA256

              c46a65bf3fc90038a2d876d103dbe658259594e90fddc223951cddb9ac9af99c

              SHA512

              a39d3c2c45deb0509ffeab971b096a90748f0fa6e3f1bacea6f8c9dfcae985ad1b45d5d48306ce06d065e92063e8156fea44c0a87e9ca99bae6838fd53edb057