Analysis

  • max time kernel
    138s
  • max time network
    149s
  • 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, 21:42

General

  • Target

    8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe

  • Size

    1.6MB

  • MD5

    26fba4d45045cd4843f4da044783ed47

  • SHA1

    c75049051c0160f0cc1b08ec73c0914a9fac7400

  • SHA256

    8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2

  • SHA512

    f1a6d2a5606834b139cf8b7282fb07cdbf81ec2c0a63e2dbbbd2f281b71029d5b1f3a0a8b1ffc94d450fae9632987a420c94ed1ae66b0ef8f49d163c4bc3f200

  • 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\8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.exe
    "C:\Users\Admin\AppData\Local\Temp\8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2.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:3544
    • 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:1264
    • 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:4092
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3544 -s 1684
      2⤵
      • Program crash
      PID:1060
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
    1⤵
      PID:1916
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:3560
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3544 -ip 3544
        1⤵
          PID:2336

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

                Filesize

                1.6MB

                MD5

                26fba4d45045cd4843f4da044783ed47

                SHA1

                c75049051c0160f0cc1b08ec73c0914a9fac7400

                SHA256

                8bbe56e2eef6db7f63f12779f40d894e384e749535fad9dcf390544604c80fa2

                SHA512

                f1a6d2a5606834b139cf8b7282fb07cdbf81ec2c0a63e2dbbbd2f281b71029d5b1f3a0a8b1ffc94d450fae9632987a420c94ed1ae66b0ef8f49d163c4bc3f200

              • C:\Users\Admin\AppData\Local\Temp\grandUIAXk_EI0z0kRWQe\information.txt

                Filesize

                3KB

                MD5

                716919b16349092602130594cb68e03e

                SHA1

                f80d35637e9251b35b50fb5de01e6b953273993b

                SHA256

                ab04bff77dfe4c5acc9625f23b19bd81e36f227cc4457f8ebcd9b92a6fc121a4

                SHA512

                287837c142446fc725fecfaf83bcf1eb5350054c536c53d8275041ddcec009262347dee5848a247261653ef94ce06660d1e25c1846e299e6a092083713e76fea

              • C:\Users\Admin\AppData\Local\Temp\posterBoxXk_EI0z0kRWQe\QdX9ITDLyCRBWeb Data

                Filesize

                92KB

                MD5

                5bca7f96843d97e2c39afbb8b5f9865b

                SHA1

                e64666a5d705a768e2351621577a386400111251

                SHA256

                e25c46923271e687a972edfcf511d7685c24ce2e509a5b10d0ba4cd6f2bfeab2

                SHA512

                40771d495b407c0ede8ad3e5d8e77cf588a607426f0597f0c10a81ec7b2614f28a66a1c5ff36bf8bf6905bdc6b537d8cc5a749725adfc57f72ec3c9ee17f76d3

              • C:\Users\Admin\AppData\Local\Temp\posterBoxXk_EI0z0kRWQe\ZunTSaNJLBVfWeb Data

                Filesize

                116KB

                MD5

                f70aa3fa04f0536280f872ad17973c3d

                SHA1

                50a7b889329a92de1b272d0ecf5fce87395d3123

                SHA256

                8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

                SHA512

                30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84