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, 21:44

General

  • Target

    411534e91037b2a3fe2af9d41b55d8b3c7f1eb3c3cc4d0efb5dec9e3054da489.exe

  • Size

    1.6MB

  • MD5

    c1a7c7faf7f611311cf47eed7e44dad2

  • SHA1

    c41740115fcb67bbbd35c0e1bb00a715f9e818b5

  • SHA256

    411534e91037b2a3fe2af9d41b55d8b3c7f1eb3c3cc4d0efb5dec9e3054da489

  • SHA512

    2e8af9e68df4690b14f66110e3bcb692e772e059d25f7dc7595cbd869644dadb51a32e9ca1a1a3b683702352b852dac1af4784cd1c2569d02db10adc96cbc3bb

  • 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\411534e91037b2a3fe2af9d41b55d8b3c7f1eb3c3cc4d0efb5dec9e3054da489.exe
    "C:\Users\Admin\AppData\Local\Temp\411534e91037b2a3fe2af9d41b55d8b3c7f1eb3c3cc4d0efb5dec9e3054da489.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:4964
    • 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:1072
    • 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:5000
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4964 -s 1560
      2⤵
      • Program crash
      PID:2188
  • \??\c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc
    1⤵
      PID:4648
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:4668

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

              Filesize

              1.6MB

              MD5

              c1a7c7faf7f611311cf47eed7e44dad2

              SHA1

              c41740115fcb67bbbd35c0e1bb00a715f9e818b5

              SHA256

              411534e91037b2a3fe2af9d41b55d8b3c7f1eb3c3cc4d0efb5dec9e3054da489

              SHA512

              2e8af9e68df4690b14f66110e3bcb692e772e059d25f7dc7595cbd869644dadb51a32e9ca1a1a3b683702352b852dac1af4784cd1c2569d02db10adc96cbc3bb

            • C:\Users\Admin\AppData\Local\Temp\grandUIAs3tbbEsipaDiD\information.txt

              Filesize

              3KB

              MD5

              6de1a00fcc1cf69614ace360c6485c68

              SHA1

              4bef6401872cfb989d2bb35b680618d6d737b36a

              SHA256

              4e38823d631fe790b4cdf073a4efcd337494e4f8956a1358071a4595124d020f

              SHA512

              fb841a69c94fb8a1e38b4c543296a1620e8910b8bf313e4662f1df6be72fe3edb9b799e08dac0b76e09106b78b0f972e2356c3a1b25b791612479a06ad56a6b4

            • C:\Users\Admin\AppData\Local\Temp\posterBoxs3tbbEsipaDiD\QdX9ITDLyCRBWeb Data

              Filesize

              92KB

              MD5

              908cc2dad5eb4412aaa2a85beb5f6341

              SHA1

              a5f1b88092d219e71e8969d01ee2a3ae669a5600

              SHA256

              210fc747617b64d2430897b4c11cd5dc81bc3a991d7c622b90918ce4d112baa4

              SHA512

              38729498bd42d999c38dc769cc79057917a933080d608574460fe7ba7c9409db4e01979044151bc0922b1a9816398e25b7be59976bd318b1202b5d13fcf03cd9