Analysis

  • max time kernel
    191s
  • max time network
    92s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 06:53

General

  • Target

    aa7a2ca6699a022ec1b964aff1916051447403df3a818fd6b246256b5c99ac26.exe

  • Size

    380KB

  • MD5

    91dc7d7c0608c2e76a59704c7ad83b7c

  • SHA1

    9fe75c22fef8caa144765406df4a83d279290c4e

  • SHA256

    aa7a2ca6699a022ec1b964aff1916051447403df3a818fd6b246256b5c99ac26

  • SHA512

    b9763fabd191e9690fa84883ce0fdce7748c6b6f1981ae761cd978d6253e8af6cfe40fe9ae7636757591332e208b1e0ba5f077fa5b789c71f946d46fbb4a7e02

  • SSDEEP

    6144:Uzv+kSZBbdH19ex4T02J4fqz22tvymTiB62iKnWKKmDTcNwjreOwI+Tm1T8vbp:UzcRD02J4Sq2vHGB67KWKKmDWKSp

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • UAC bypass 3 TTPs 1 IoCs
  • UPX packed file 1 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops startup file 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 11 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\aa7a2ca6699a022ec1b964aff1916051447403df3a818fd6b246256b5c99ac26.exe
    "C:\Users\Admin\AppData\Local\Temp\aa7a2ca6699a022ec1b964aff1916051447403df3a818fd6b246256b5c99ac26.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Drops startup file
    • Checks whether UAC is enabled
    • Modifies Internet Explorer settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1444
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c taskkill /f /im explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:756
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im explorer.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1556
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c taskkill /f /im explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:772
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im explorer.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1644
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c taskkill /f /im explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1884
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im explorer.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:848
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c taskkill /f /im explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1104
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im explorer.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1092
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c taskkill /f /im explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:532
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im explorer.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1896
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c taskkill /f /im explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1732
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im explorer.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:816
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c taskkill /f /im explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1752
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im explorer.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1696
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c taskkill /f /im explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:360
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im explorer.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1336
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c taskkill /f /im explorer.exe
      2⤵
        PID:580
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /f /im explorer.exe
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1708
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c taskkill /f /im explorer.exe
        2⤵
          PID:520
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /f /im explorer.exe
            3⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:924
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c taskkill /f /im explorer.exe
          2⤵
            PID:1676
            • C:\Windows\SysWOW64\taskkill.exe
              taskkill /f /im explorer.exe
              3⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:1576

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • memory/360-73-0x0000000000000000-mapping.dmp

        • memory/520-77-0x0000000000000000-mapping.dmp

        • memory/532-67-0x0000000000000000-mapping.dmp

        • memory/580-75-0x0000000000000000-mapping.dmp

        • memory/756-59-0x0000000000000000-mapping.dmp

        • memory/772-61-0x0000000000000000-mapping.dmp

        • memory/816-70-0x0000000000000000-mapping.dmp

        • memory/848-64-0x0000000000000000-mapping.dmp

        • memory/924-78-0x0000000000000000-mapping.dmp

        • memory/1092-66-0x0000000000000000-mapping.dmp

        • memory/1104-65-0x0000000000000000-mapping.dmp

        • memory/1336-74-0x0000000000000000-mapping.dmp

        • memory/1444-56-0x00000000008E0000-0x00000000008F0000-memory.dmp

          Filesize

          64KB

        • memory/1444-57-0x00000000008E0000-0x00000000008F0000-memory.dmp

          Filesize

          64KB

        • memory/1444-54-0x0000000075491000-0x0000000075493000-memory.dmp

          Filesize

          8KB

        • memory/1444-55-0x0000000000400000-0x00000000004C2000-memory.dmp

          Filesize

          776KB

        • memory/1556-60-0x0000000000000000-mapping.dmp

        • memory/1576-80-0x0000000000000000-mapping.dmp

        • memory/1644-62-0x0000000000000000-mapping.dmp

        • memory/1676-79-0x0000000000000000-mapping.dmp

        • memory/1696-72-0x0000000000000000-mapping.dmp

        • memory/1708-76-0x0000000000000000-mapping.dmp

        • memory/1732-69-0x0000000000000000-mapping.dmp

        • memory/1752-71-0x0000000000000000-mapping.dmp

        • memory/1884-63-0x0000000000000000-mapping.dmp

        • memory/1896-68-0x0000000000000000-mapping.dmp