Analysis

  • max time kernel
    124s
  • max time network
    130s
  • platform
    windows10-1703_x64
  • resource
    win10-20231023-en
  • resource tags

    arch:x64arch:x86image:win10-20231023-enlocale:en-usos:windows10-1703-x64system
  • submitted
    13/12/2023, 21:35

General

  • Target

    88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe

  • Size

    1.6MB

  • MD5

    98a8b379d7fdbecec19bd05d63f84e93

  • SHA1

    b6aa54bf7c0d2248258a0c7bb2df9fb7febd7a0f

  • SHA256

    88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6

  • SHA512

    fe04553cc807ed67b3cfd50dc7a678d553a417daccff390400c583c9d1d4e3909b1c679220908781988df1acf7a731caa2907bd3a24c80065b4d0e61f77c7691

  • 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\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.exe
    "C:\Users\Admin\AppData\Local\Temp\88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6.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:2336
    • 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:3544
    • 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:4192
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2336 -s 1672
      2⤵
      • Program crash
      PID:3496
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:4968
    • \??\c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc
      1⤵
        PID:4540

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

              Filesize

              1.6MB

              MD5

              98a8b379d7fdbecec19bd05d63f84e93

              SHA1

              b6aa54bf7c0d2248258a0c7bb2df9fb7febd7a0f

              SHA256

              88bba2aec938e9f12907218015e5437069bf45993d7b32bb3d5ad5cf0462bfb6

              SHA512

              fe04553cc807ed67b3cfd50dc7a678d553a417daccff390400c583c9d1d4e3909b1c679220908781988df1acf7a731caa2907bd3a24c80065b4d0e61f77c7691

            • C:\Users\Admin\AppData\Local\Temp\grandUIAwwAsG1b5PlO04\information.txt

              Filesize

              3KB

              MD5

              3d5b7cc0717deaccf7c2cc00a77eb15f

              SHA1

              eb117c6a48c5b7211ed98443b8a07358645b583c

              SHA256

              cbcd1c3a3955b9655752c28207c709e2d4df8f616eb98da82a61c2495a986cae

              SHA512

              8714f779302827c7eb1ee993515675daa86b01e38cb477c68c16cdbf70b0a434722ecef3744d34f2dda9f65f8c36154eb0f99e6f3d4ed22aed1f74ab102dfb07

            • C:\Users\Admin\AppData\Local\Temp\posterBoxwwAsG1b5PlO04\QdX9ITDLyCRBWeb Data

              Filesize

              92KB

              MD5

              90a4e3db168e5bdc6b5e562ce7f41a06

              SHA1

              2bf235c33b3395caefc1b9f1a280f83422f94d40

              SHA256

              fdd37b06f981e619d6690edeaa17ba8d86c66cec9331632f3d9922bb2c6eabf5

              SHA512

              e30f0a67bbdc6507ac5babaa5fe1e0db7cde6b62812f6365fe83293e5fbba3f62db43c80c635a43b3b0ffb2e08ac2faf79eff0d3bea8e2aaaca6c55fb0833c0b