Analysis

  • max time kernel
    140s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/12/2023, 21:40

General

  • Target

    98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe

  • Size

    1.6MB

  • MD5

    343ff6d92d15dff020c065598bba7c57

  • SHA1

    1d5f119e3e78c1bd17408a20e9dce62014e30967

  • SHA256

    98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d

  • SHA512

    e14359e9621c0abf3ed8322fb0b34d2716354270e48dd2c0bb6a8845b5094bf720535ef3590ff2b339e18ba6cfe29190c8f73ea1742994a4788894a969c139de

  • 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\98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.exe
    "C:\Users\Admin\AppData\Local\Temp\98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d.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:3416
    • 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:2936
    • 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:4520
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3416 -s 1692
      2⤵
      • Program crash
      PID:912
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:4140
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:5080
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3416 -ip 3416
        1⤵
          PID:3680

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

                Filesize

                1.6MB

                MD5

                343ff6d92d15dff020c065598bba7c57

                SHA1

                1d5f119e3e78c1bd17408a20e9dce62014e30967

                SHA256

                98affda7cf20520a1b7219ee5397388ee7d61dd3a9ed209f0f03853e9c1be03d

                SHA512

                e14359e9621c0abf3ed8322fb0b34d2716354270e48dd2c0bb6a8845b5094bf720535ef3590ff2b339e18ba6cfe29190c8f73ea1742994a4788894a969c139de

              • C:\Users\Admin\AppData\Local\Temp\grandUIA3ZLeoeR7BGNJ9\information.txt

                Filesize

                3KB

                MD5

                8d6c3ee5ee841aa8d3b8af6b83253f51

                SHA1

                1fd5f7bef31d5c00f4b84041093f1110e9a7e775

                SHA256

                93e943eafb5e82899c12f9118944f6500d06774b6ae8cc06dd07429a119b8258

                SHA512

                0cb5fbe82c2137b6c36ba361bd8fba38d77c825562078e2fd5ed37ccaeecf7788f88a5836ca48413152f9573173b153e24b56a2327d4d0eca499019f3b242dd1

              • C:\Users\Admin\AppData\Local\Temp\posterBox3ZLeoeR7BGNJ9\QdX9ITDLyCRBWeb Data

                Filesize

                92KB

                MD5

                e970f07ab6cd9d0072e89d83267cc3d8

                SHA1

                ff5d0c393b555485c8ecd324dccef53bba061818

                SHA256

                5108fd709c712fb6279e6228c2decec833d9dfee5a34c846b3372e3e7e4f3a7e

                SHA512

                c25c645447e3eda6a9648223905f46a77615e9b6729aebb1d829b0278c20052b413e16f4326d57a0b64ab31bdfd691136bc4879d1ea380dbe6efbbefec11951f

              • C:\Users\Admin\AppData\Local\Temp\posterBox3ZLeoeR7BGNJ9\ZunTSaNJLBVfWeb Data

                Filesize

                116KB

                MD5

                f70aa3fa04f0536280f872ad17973c3d

                SHA1

                50a7b889329a92de1b272d0ecf5fce87395d3123

                SHA256

                8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

                SHA512

                30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84