Analysis

  • max time kernel
    149s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-08-2024 00:18

General

  • Target

    8806c904bcfd4a553d45ca8d901b0c64f2979520e627c8eca03c47f16cb63e2f.exe

  • Size

    1.8MB

  • MD5

    391fe889af6711d9faf1cbc0a85e44dc

  • SHA1

    c8545a53ef950be2bb3b2b82859e908f527ce8cb

  • SHA256

    8806c904bcfd4a553d45ca8d901b0c64f2979520e627c8eca03c47f16cb63e2f

  • SHA512

    0c95007a9286912be5647d4bb5262d7fecd74ada11245ff08d70fadeaf37cd00401843913d3364d3b8f7bef85bd6a9958db81d3158c4372b58c0fb98c32580c9

  • SSDEEP

    12288:BHTVhI8jdG+sV1p0x/k9fkQ3KypwkBPKxY9XZdFh29DNDupLdXUoWxOT8oSR:tV35QOk3KWNo34nOOTq

Malware Config

Signatures

  • Modifies firewall policy service 3 TTPs 10 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • UPX packed file 22 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry key 1 TTPs 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8806c904bcfd4a553d45ca8d901b0c64f2979520e627c8eca03c47f16cb63e2f.exe
    "C:\Users\Admin\AppData\Local\Temp\8806c904bcfd4a553d45ca8d901b0c64f2979520e627c8eca03c47f16cb63e2f.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4764
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KJESn.bat" "
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:448
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "WinUpdt" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt2.exe" /f
        3⤵
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        PID:4364
    • C:\Users\Admin\AppData\Roaming\Window Updates\winupdt2.exe
      "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt2.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:988
      • C:\Users\Admin\AppData\Roaming\Window Updates\winupdt2.exe
        "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt2.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3168
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:912
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:4064
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt2.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt2.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:228
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt2.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt2.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:2232
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:3380
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:3440
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Updater.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Updater.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1592
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Updater.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Updater.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:208
      • C:\Users\Admin\AppData\Roaming\Window Updates\winupdt2.exe
        "C:\Users\Admin\AppData\Roaming\Window Updates\winupdt2.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:4520

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\KJESn.txt

    Filesize

    152B

    MD5

    49bb161b07149b1bda99901c71d98b1f

    SHA1

    e5e3b389c09d551bd8f3a4cf71ee30e566fdf6e2

    SHA256

    734c4f48449a118dbdfbbe4971ecf112b26b2b45d1889678c01dea98eb5767d8

    SHA512

    da09a2af9b7f9528916ab719ed97ee8b61179bba92016eaed64b3e7d6bf08646801aeeb0eb332bdde175eb64b48106f7cf2fe2bf01ea6128753e4ce1d48707be

  • C:\Users\Admin\AppData\Roaming\Window Updates\winupdt2.txt

    Filesize

    1.8MB

    MD5

    cf14a101c8e0ffd8844f60a6965d798a

    SHA1

    4095818b79f4e1f6272939059ada76479978e6ce

    SHA256

    222cfe6453df02cf00d7099402207981957fa005e938ea238c23f42f9e26d6c1

    SHA512

    5c462e83d84194978a5821035161f3bace1cc2abfb4043524bb3e51ee927d63809887d75b5161ad1490d0c98ee91185dd01f2a9ab34ecace18a9cfdcae7020b7

  • memory/988-50-0x0000000000400000-0x00000000005CA000-memory.dmp

    Filesize

    1.8MB

  • memory/3168-36-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/3168-66-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/3168-73-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/3168-34-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/3168-71-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/3168-31-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/3168-68-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/3168-61-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/3168-51-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/3168-64-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/3168-53-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/3168-55-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/3168-57-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/3168-59-0x0000000000400000-0x000000000045C000-memory.dmp

    Filesize

    368KB

  • memory/4520-45-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/4520-52-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/4520-43-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/4520-40-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/4764-28-0x0000000000400000-0x00000000005CA000-memory.dmp

    Filesize

    1.8MB

  • memory/4764-0-0x0000000000400000-0x00000000005CA000-memory.dmp

    Filesize

    1.8MB