Analysis

  • max time kernel
    147s
  • max time network
    148s
  • 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, 23:55

General

  • Target

    35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe

  • Size

    1.6MB

  • MD5

    7372e9843646bb76f1e0dafa9577da52

  • SHA1

    c4b697f4a9bf0f8eaed5960903ba1c8880df93d1

  • SHA256

    35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5

  • SHA512

    9af3553399d11dec5744bdb9faf0adb96be21f7986e47c12aec83ed9206cf4d7d80e7f04e6548ea0e4d15df9b0a2387e1d8a60a581731f12c066cf826a172657

  • 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\35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.exe
    "C:\Users\Admin\AppData\Local\Temp\35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5.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:2200
    • 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:1436
    • 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:4556
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 1740
      2⤵
      • Program crash
      PID:196
  • \??\c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc
    1⤵
      PID:4588
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:4764

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

              Filesize

              1.6MB

              MD5

              7372e9843646bb76f1e0dafa9577da52

              SHA1

              c4b697f4a9bf0f8eaed5960903ba1c8880df93d1

              SHA256

              35cca66849f128ef5d2a4f25df97f866776e914c7b5783b93b74be63ba0aebe5

              SHA512

              9af3553399d11dec5744bdb9faf0adb96be21f7986e47c12aec83ed9206cf4d7d80e7f04e6548ea0e4d15df9b0a2387e1d8a60a581731f12c066cf826a172657

            • C:\Users\Admin\AppData\Local\Temp\grandUIAz9oqJw6h7PZGZ\information.txt

              Filesize

              3KB

              MD5

              2f9ec4705bfa49702d2b45891382a364

              SHA1

              11f7ed3f3887f65593bbbf867271130d9c2f25ce

              SHA256

              523bf27701cdcd2c7a8f93295e9c4c75bebd03a2e41537901eb5dc06da2600b6

              SHA512

              9e0d86f2d4ff84ee4750ea846be614d27694fb1a8bb6ec70b315fb1111108a37967327a6fd2282a6559275d5624f7cae65ecadae0263eeccfef5ff86da6ec6f9

            • C:\Users\Admin\AppData\Local\Temp\posterBoxz9oqJw6h7PZGZ\QdX9ITDLyCRBWeb Data

              Filesize

              92KB

              MD5

              4491efe9c997c2bb294866dab785b4a3

              SHA1

              655c178e979acf42eed324d2883b04ef9ba441c3

              SHA256

              197fb907775f182f8a8f6e00e5b514477a096988d10475a63385647c32b361e7

              SHA512

              57c135d0932dd1e11367d34af7808fd524c87507c263e3190105cbc69a4ac1ab730ed31631c860fbde125b99bd5995af797707fbc7063ceb5b1a1a708916d142