Analysis

  • max time kernel
    145s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/12/2023, 22:15

General

  • Target

    68b90c296d7d3a9e57d7791ca1a800be26e1b8469a12e3cc6c3f68020b805e5a.exe

  • Size

    1.6MB

  • MD5

    b991c96def9c2535aa07413e4ddede9a

  • SHA1

    5bb261e16b3d1c877e57742c87312fdfa25ac297

  • SHA256

    68b90c296d7d3a9e57d7791ca1a800be26e1b8469a12e3cc6c3f68020b805e5a

  • SHA512

    fafc373ee0f03ad8f22f8a3177a6659d66afb436c2d165e4f58d3ea9bf1aedf33aee74d7be9d345c4ebe037201d203f36ad31d5d5e70c4e74e2896d214f0e45e

  • 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\68b90c296d7d3a9e57d7791ca1a800be26e1b8469a12e3cc6c3f68020b805e5a.exe
    "C:\Users\Admin\AppData\Local\Temp\68b90c296d7d3a9e57d7791ca1a800be26e1b8469a12e3cc6c3f68020b805e5a.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:2212
    • 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:4032
    • 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:2232
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2212 -s 1808
      2⤵
      • Program crash
      PID:4580
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
    1⤵
      PID:2760
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:1088
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2212 -ip 2212
        1⤵
          PID:3752

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

                Filesize

                1.6MB

                MD5

                b991c96def9c2535aa07413e4ddede9a

                SHA1

                5bb261e16b3d1c877e57742c87312fdfa25ac297

                SHA256

                68b90c296d7d3a9e57d7791ca1a800be26e1b8469a12e3cc6c3f68020b805e5a

                SHA512

                fafc373ee0f03ad8f22f8a3177a6659d66afb436c2d165e4f58d3ea9bf1aedf33aee74d7be9d345c4ebe037201d203f36ad31d5d5e70c4e74e2896d214f0e45e

              • C:\Users\Admin\AppData\Local\Temp\grandUIArguLPR8U6IfaB\information.txt

                Filesize

                3KB

                MD5

                1fc51370c1abaaf64a06d4e1fc494dd3

                SHA1

                29b3a16fc06ac4d9a170f6f27ea5015f4b4cd036

                SHA256

                053f8033e5549c114cd9f06575af5c33b7304e5f7e4e919324622b7238eee94f

                SHA512

                0e0f293c24d2e37a559aa17ed28f528c3be88aa1b1e688998105eee707485373a791971c9fa8d2c8e39b6799fe1ca13750f11f44b8002c1f84d92531a10ee8cb

              • C:\Users\Admin\AppData\Local\Temp\posterBoxrguLPR8U6IfaB\QdX9ITDLyCRBWeb Data

                Filesize

                92KB

                MD5

                15b15858232eb73939154fa51070f7d9

                SHA1

                c5d442be8afd48c12f3e10324d74c274ebad25d8

                SHA256

                415b5d95ff3e636716deaa385106694fcc257f82be4fe831fdaed420bba50cf2

                SHA512

                8477c2a94ecbecff9d79d3f73713d568ab29260cd51397f54939629531aa84eeaaffc742bef744da071718b597b15e8870c547cf1dfeb122686bb9e59a7dfd86

              • C:\Users\Admin\AppData\Local\Temp\posterBoxrguLPR8U6IfaB\ZunTSaNJLBVfWeb Data

                Filesize

                116KB

                MD5

                f70aa3fa04f0536280f872ad17973c3d

                SHA1

                50a7b889329a92de1b272d0ecf5fce87395d3123

                SHA256

                8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

                SHA512

                30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84