Analysis

  • max time kernel
    147s
  • 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, 23:19

General

  • Target

    6522c4c9094c3423fd31c235d71bec2c1c018c1143436732169fe171c28aabb6.exe

  • Size

    1.6MB

  • MD5

    5a1949aa5f4f51bf6239f79551622bce

  • SHA1

    88d4c0954ec11bf580870321f63f3f766c816dc5

  • SHA256

    6522c4c9094c3423fd31c235d71bec2c1c018c1143436732169fe171c28aabb6

  • SHA512

    3852d05d01cedd3244611856b577a9d777759233794e35b9c0486fccbb9702f9e978d9430a8106702ca4543b7b4117e1b6b3aaaa7a5b04b9f9d365b22fa26e8d

  • 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\6522c4c9094c3423fd31c235d71bec2c1c018c1143436732169fe171c28aabb6.exe
    "C:\Users\Admin\AppData\Local\Temp\6522c4c9094c3423fd31c235d71bec2c1c018c1143436732169fe171c28aabb6.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:3748
    • 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:3620
    • 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:4380
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 1784
      2⤵
      • Program crash
      PID:2252
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
    1⤵
      PID:1552
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:5020
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3748 -ip 3748
        1⤵
          PID:1640

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe

                Filesize

                1.6MB

                MD5

                5a1949aa5f4f51bf6239f79551622bce

                SHA1

                88d4c0954ec11bf580870321f63f3f766c816dc5

                SHA256

                6522c4c9094c3423fd31c235d71bec2c1c018c1143436732169fe171c28aabb6

                SHA512

                3852d05d01cedd3244611856b577a9d777759233794e35b9c0486fccbb9702f9e978d9430a8106702ca4543b7b4117e1b6b3aaaa7a5b04b9f9d365b22fa26e8d

              • C:\Users\Admin\AppData\Local\Temp\grandUIA4ezjpQszjOGNn\information.txt

                Filesize

                3KB

                MD5

                9842ef514806e9e89c7d994310da66a7

                SHA1

                80ef240993b4a2c35f1bd88f985839faf2cb3a48

                SHA256

                7c03742e06aa16a9041e714645f5db264098570393c2817e768c8ca5297ba0c9

                SHA512

                788a2743ff03e45b7e87e8934d2e26527f48a794a37ec9f44fd95719daf8ba0b1fdc4c1cd5d1883739056f2b064c40e33115ddcb83ca2934c8e915a3b6a0b35a

              • C:\Users\Admin\AppData\Local\Temp\posterBox4ezjpQszjOGNn\QdX9ITDLyCRBWeb Data

                Filesize

                92KB

                MD5

                5bca7f96843d97e2c39afbb8b5f9865b

                SHA1

                e64666a5d705a768e2351621577a386400111251

                SHA256

                e25c46923271e687a972edfcf511d7685c24ce2e509a5b10d0ba4cd6f2bfeab2

                SHA512

                40771d495b407c0ede8ad3e5d8e77cf588a607426f0597f0c10a81ec7b2614f28a66a1c5ff36bf8bf6905bdc6b537d8cc5a749725adfc57f72ec3c9ee17f76d3

              • C:\Users\Admin\AppData\Local\Temp\posterBox4ezjpQszjOGNn\ZunTSaNJLBVfWeb Data

                Filesize

                116KB

                MD5

                f70aa3fa04f0536280f872ad17973c3d

                SHA1

                50a7b889329a92de1b272d0ecf5fce87395d3123

                SHA256

                8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

                SHA512

                30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84