Overview

overview

10

Static

static

04d7a39f48...6b.exe

windows7_x64

10

04d7a39f48...6b.exe

windows10_x64

10

Analysis

  • max time kernel
    106s
  • max time network
    10s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    15-04-2021 05:46

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General

  • Target

    04d7a39f48372981d96a9c4b2806fd5485f29ef7f51b9d18d479a8089ae6b26b.exe

  • Size

    145KB

  • MD5

    97342e82b73e42906a215964333087c4

  • SHA1

    a599e3d0ffe33237aa7652df1e7e02cfaec62569

  • SHA256

    04d7a39f48372981d96a9c4b2806fd5485f29ef7f51b9d18d479a8089ae6b26b

  • SHA512

    e62b7aca16f905f05519e5db4563e82ace28b78ebe75c84f642bb8ef044a9df647705167b81c17b0644b862c240225c8bd107052f901bf888a6add65cd62b78a

Score
10/10
evasionpersistenceransomware

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Disables Task Manager via registry modification
    evasion
  • Drops desktop.ini file(s) 1 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\04d7a39f48372981d96a9c4b2806fd5485f29ef7f51b9d18d479a8089ae6b26b.exe
    "C:\Users\Admin\AppData\Local\Temp\04d7a39f48372981d96a9c4b2806fd5485f29ef7f51b9d18d479a8089ae6b26b.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops desktop.ini file(s)
    • Sets desktop wallpaper using registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:1084
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1084 -s 708
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:1368
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
      PID:864
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
        PID:284
      • C:\Windows\system32\taskmgr.exe
        "C:\Windows\system32\taskmgr.exe"
        1⤵
          PID:644

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Initial Access

        Execution

        Persistence

        Winlogon Helper DLL

        1
        T1004

        Privilege Escalation

        Defense Evasion

        Modify Registry

        2
        T1112

        Credential Access

        Discovery

        Lateral Movement

        Collection

        Exfiltration

        Command and Control

        Impact

        Defacement

        1
        T1491

        Replay Monitor

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        Downloads

        • memory/864-65-0x000007FEFBD91000-0x000007FEFBD93000-memory.dmp
          Filesize

          8KB

          Download
        • memory/1084-60-0x0000000000C30000-0x0000000000C31000-memory.dmp
          Filesize

          4KB

          Download
        • memory/1084-62-0x000000001B200000-0x000000001B202000-memory.dmp
          Filesize

          8KB

          Download
        • memory/1084-64-0x000000001B207000-0x000000001B226000-memory.dmp
          Filesize

          124KB

          Download
        • memory/1084-63-0x000000001B202000-0x000000001B203000-memory.dmp
          Filesize

          4KB

          Download
        • memory/1368-66-0x0000000000000000-mapping.dmp
          Download
        • memory/1368-68-0x0000000000220000-0x0000000000221000-memory.dmp
          Filesize

          4KB

          Download