Analysis

  • max time kernel
    135s
  • max time network
    220s
  • platform
    windows7_x64
  • resource
    win7-20220718-en
  • resource tags

    arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
  • submitted
    25-07-2022 17:21

General

  • Target

    54fe3fb46b47d290445662882ddf2e20b65306ff7d1ff1d9878b5b9ef5632422.exe

  • Size

    728KB

  • MD5

    cf5eaf5016b20b65c805de7e5e074a85

  • SHA1

    1b89c182e8421d1b28feec2308cfbb1ce455dd79

  • SHA256

    54fe3fb46b47d290445662882ddf2e20b65306ff7d1ff1d9878b5b9ef5632422

  • SHA512

    b3a6cb9d8d686ea1f4ce312ef6f0269cee5fa3df1eb773f672ff2aa2da6c6a0e1b40acedaa8e3fd1fb723304f0e61455886872fb0622368b64cc5a4e98d03158

Malware Config

Signatures

  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 1 IoCs
  • XpertRAT

    XpertRAT is a remote access trojan with various capabilities.

  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Windows security modification 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\54fe3fb46b47d290445662882ddf2e20b65306ff7d1ff1d9878b5b9ef5632422.exe
    "C:\Users\Admin\AppData\Local\Temp\54fe3fb46b47d290445662882ddf2e20b65306ff7d1ff1d9878b5b9ef5632422.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:996
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /SC HOURLY /MO 23 /TN "Forsamlingshusets" /TR "reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "\""Forsamlingshusets"\"" /f /t REG_SZ /d "\""C:\Users\Admin\AppData\Local\Temp\Borland8.exe\""
      2⤵
      • Creates scheduled task(s)
      PID:836
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /run /tn "Forsamlingshusets"
      2⤵
        PID:1444
      • C:\Users\Admin\AppData\Local\Temp\Borland8.exe
        "C:\Users\Admin\AppData\Local\Temp\Borland8.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1912
        • C:\Users\Admin\AppData\Local\Temp\Borland8.exe
          "C:\Users\Admin\AppData\Local\Temp\Borland8.exe"
          3⤵
          • UAC bypass
          • Windows security bypass
          • Executes dropped EXE
          • Windows security modification
          • Checks whether UAC is enabled
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          • System policy modification
          PID:320
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            C:\Users\Admin\AppData\Local\Temp\Borland8.exe
            4⤵
            • Adds policy Run key to start application
            • Adds Run key to start application
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:540
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {A1624953-5AC9-4971-B0FD-0B164C4E3352} S-1-5-21-3762437355-3468409815-1164039494-1000:TZEOUYSL\Admin:Interactive:[1]
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1036
      • C:\Windows\system32\reg.EXE
        C:\Windows\system32\reg.EXE add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "Forsamlingshusets" /f /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\Borland8.exe"
        2⤵
        • Adds Run key to start application
        • Modifies registry key
        PID:1528

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Registry Run Keys / Startup Folder

    2
    T1060

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Bypass User Account Control

    1
    T1088

    Scheduled Task

    1
    T1053

    Defense Evasion

    Bypass User Account Control

    1
    T1088

    Disabling Security Tools

    3
    T1089

    Modify Registry

    7
    T1112

    Discovery

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Borland8.exe
      Filesize

      728KB

      MD5

      ef41b5d8c942469a54c6bc3d7820f875

      SHA1

      cf3b1e9d07ea0046e0dbb2cc679165ab66bfd45c

      SHA256

      1ae554428c74e230e1b1e89b709630d36cc0e31d42a07c7555e5727809dfe85f

      SHA512

      68b06f59d290acabfbafad73558eb9229cb5f2b4a99723bf7b02e139b60fecec827a2d05c40229d1b63c0cd105fe0581dc282eb71f1f5c53b64b424679cafb7a

    • C:\Users\Admin\AppData\Local\Temp\Borland8.exe
      Filesize

      728KB

      MD5

      ef41b5d8c942469a54c6bc3d7820f875

      SHA1

      cf3b1e9d07ea0046e0dbb2cc679165ab66bfd45c

      SHA256

      1ae554428c74e230e1b1e89b709630d36cc0e31d42a07c7555e5727809dfe85f

      SHA512

      68b06f59d290acabfbafad73558eb9229cb5f2b4a99723bf7b02e139b60fecec827a2d05c40229d1b63c0cd105fe0581dc282eb71f1f5c53b64b424679cafb7a

    • C:\Users\Admin\AppData\Local\Temp\Borland8.exe
      Filesize

      728KB

      MD5

      ef41b5d8c942469a54c6bc3d7820f875

      SHA1

      cf3b1e9d07ea0046e0dbb2cc679165ab66bfd45c

      SHA256

      1ae554428c74e230e1b1e89b709630d36cc0e31d42a07c7555e5727809dfe85f

      SHA512

      68b06f59d290acabfbafad73558eb9229cb5f2b4a99723bf7b02e139b60fecec827a2d05c40229d1b63c0cd105fe0581dc282eb71f1f5c53b64b424679cafb7a

    • \Users\Admin\AppData\Local\Temp\Borland8.exe
      Filesize

      728KB

      MD5

      ef41b5d8c942469a54c6bc3d7820f875

      SHA1

      cf3b1e9d07ea0046e0dbb2cc679165ab66bfd45c

      SHA256

      1ae554428c74e230e1b1e89b709630d36cc0e31d42a07c7555e5727809dfe85f

      SHA512

      68b06f59d290acabfbafad73558eb9229cb5f2b4a99723bf7b02e139b60fecec827a2d05c40229d1b63c0cd105fe0581dc282eb71f1f5c53b64b424679cafb7a

    • \Users\Admin\AppData\Local\Temp\Borland8.exe
      Filesize

      728KB

      MD5

      ef41b5d8c942469a54c6bc3d7820f875

      SHA1

      cf3b1e9d07ea0046e0dbb2cc679165ab66bfd45c

      SHA256

      1ae554428c74e230e1b1e89b709630d36cc0e31d42a07c7555e5727809dfe85f

      SHA512

      68b06f59d290acabfbafad73558eb9229cb5f2b4a99723bf7b02e139b60fecec827a2d05c40229d1b63c0cd105fe0581dc282eb71f1f5c53b64b424679cafb7a

    • \Users\Admin\AppData\Local\Temp\Borland8.exe
      Filesize

      728KB

      MD5

      ef41b5d8c942469a54c6bc3d7820f875

      SHA1

      cf3b1e9d07ea0046e0dbb2cc679165ab66bfd45c

      SHA256

      1ae554428c74e230e1b1e89b709630d36cc0e31d42a07c7555e5727809dfe85f

      SHA512

      68b06f59d290acabfbafad73558eb9229cb5f2b4a99723bf7b02e139b60fecec827a2d05c40229d1b63c0cd105fe0581dc282eb71f1f5c53b64b424679cafb7a

    • memory/320-72-0x00000000004010B8-mapping.dmp
    • memory/320-71-0x0000000000400000-0x000000000042C000-memory.dmp
      Filesize

      176KB

    • memory/320-80-0x0000000000400000-0x000000000042C000-memory.dmp
      Filesize

      176KB

    • memory/320-79-0x0000000000400000-0x000000000042C000-memory.dmp
      Filesize

      176KB

    • memory/836-59-0x0000000000000000-mapping.dmp
    • memory/996-58-0x00000000760F1000-0x00000000760F3000-memory.dmp
      Filesize

      8KB

    • memory/996-56-0x0000000077C10000-0x0000000077DB9000-memory.dmp
      Filesize

      1.7MB

    • memory/996-57-0x0000000077DF0000-0x0000000077F70000-memory.dmp
      Filesize

      1.5MB

    • memory/996-67-0x0000000077DF0000-0x0000000077F70000-memory.dmp
      Filesize

      1.5MB

    • memory/1444-60-0x0000000000000000-mapping.dmp
    • memory/1528-81-0x0000000000000000-mapping.dmp
    • memory/1912-75-0x0000000077C10000-0x0000000077DB9000-memory.dmp
      Filesize

      1.7MB

    • memory/1912-76-0x0000000077DF0000-0x0000000077F70000-memory.dmp
      Filesize

      1.5MB

    • memory/1912-63-0x0000000000000000-mapping.dmp