Resubmissions

16-03-2021 18:01

210316-trddssyj5s 10

16-03-2021 17:35

210316-s74c3lhrtn 8

Analysis

  • max time kernel
    91s
  • max time network
    94s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    16-03-2021 17:35

General

  • Target

    aa5ba0f6ce6bb84632d0dda729c787961b751c237372aa47dc49dc8a8a9a749d.exe

  • Size

    117.6MB

  • MD5

    015fd4bc87666d454f1517b2970dc097

  • SHA1

    88685aaaba4297deef30ac4fe9bd065baa7c0c0d

  • SHA256

    aa5ba0f6ce6bb84632d0dda729c787961b751c237372aa47dc49dc8a8a9a749d

  • SHA512

    ed3378510720b92fa77098c4d48763ea04e52c63bbbf074b711e16ef781281314dad6a7e0d3069bf0cd7598c1ea426b6effabd691ae0a945e79144afdd153637

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 64 IoCs
  • Modifies system certificate store 2 TTPs 9 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\aa5ba0f6ce6bb84632d0dda729c787961b751c237372aa47dc49dc8a8a9a749d.exe
    "C:\Users\Admin\AppData\Local\Temp\aa5ba0f6ce6bb84632d0dda729c787961b751c237372aa47dc49dc8a8a9a749d.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1652
    • C:\Users\Admin\AppData\Local\Temp\is-E1OLC.tmp\aa5ba0f6ce6bb84632d0dda729c787961b751c237372aa47dc49dc8a8a9a749d.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-E1OLC.tmp\aa5ba0f6ce6bb84632d0dda729c787961b751c237372aa47dc49dc8a8a9a749d.tmp" /SL5="$6015C,122284744,999424,C:\Users\Admin\AppData\Local\Temp\aa5ba0f6ce6bb84632d0dda729c787961b751c237372aa47dc49dc8a8a9a749d.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2044
      • C:\Users\Admin\AppData\Local\Temp\is-PB05P.tmp\PDFescape_Desktop_Installer.exe
        "C:\Users\Admin\AppData\Local\Temp\is-PB05P.tmp\PDFescape_Desktop_Installer.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1576
        • C:\Windows\SysWOW64\regsvr32.exe
          regsvr32.exe /s "C:\ProgramData\PDFescape Desktop\Installation\Statistics.dll"
          4⤵
          • Loads dropped DLL
          • Modifies registry class
          PID:944
        • C:\ProgramData\PDFescape Desktop\Installation\PDFescapeDesktopInstaller.exe
          "C:\ProgramData\PDFescape Desktop\Installation\PDFescapeDesktopInstaller.exe" /RegServer
          4⤵
          • Executes dropped EXE
          • Modifies registry class
          PID:1164
  • C:\Windows\SysWOW64\DllHost.exe
    C:\Windows\SysWOW64\DllHost.exe /Processid:{2BC47158-F746-4E22-B116-D481B09E9674}
    1⤵
    • Loads dropped DLL
    PID:1816
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1124

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/268-14-0x000007FEF63C0000-0x000007FEF663A000-memory.dmp

    Filesize

    2.5MB

  • memory/1124-30-0x000007FEFBEE1000-0x000007FEFBEE3000-memory.dmp

    Filesize

    8KB

  • memory/1652-2-0x0000000075571000-0x0000000075573000-memory.dmp

    Filesize

    8KB

  • memory/1652-4-0x0000000000401000-0x00000000004B7000-memory.dmp

    Filesize

    728KB

  • memory/2044-9-0x0000000000250000-0x0000000000251000-memory.dmp

    Filesize

    4KB