Analysis

  • max time kernel
    162s
  • max time network
    192s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 15:33

General

  • Target

    bcb72ffc7af798ea42e0ef8dc9617b736433a5667f9e88f96cfea5b24b796b0b.exe

  • Size

    500KB

  • MD5

    683ba16fc97a52c41c0c407a6b379fee

  • SHA1

    797a88f51a8fc6b3f4fc1ee0a0fa1d8f691f088f

  • SHA256

    bcb72ffc7af798ea42e0ef8dc9617b736433a5667f9e88f96cfea5b24b796b0b

  • SHA512

    02686f40f85aac6efc1489d2e181a213dee2bbbb76a574f75c796e5a35b26f6b805bed3c91208c73327a0409866843f06cf6868359553273b779ad5974e2541d

  • SSDEEP

    12288:XKBLWoD1fKBLWoD1anB9+LEh/TyiAgTwLTtkeVcEE9zSwZfTyQcj4Ihz6lvdKw3J:XKFD1fKFD1anB9+LEh/TyiAgTwLTtke8

Score
10/10

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 8 IoCs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • UPX packed file 7 IoCs

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

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies registry key 1 TTPs 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bcb72ffc7af798ea42e0ef8dc9617b736433a5667f9e88f96cfea5b24b796b0b.exe
    "C:\Users\Admin\AppData\Local\Temp\bcb72ffc7af798ea42e0ef8dc9617b736433a5667f9e88f96cfea5b24b796b0b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1648
    • C:\Users\Admin\AppData\Local\Temp\bcb72ffc7af798ea42e0ef8dc9617b736433a5667f9e88f96cfea5b24b796b0b.exe
      "C:\Users\Admin\AppData\Local\Temp\bcb72ffc7af798ea42e0ef8dc9617b736433a5667f9e88f96cfea5b24b796b0b.exe"
      2⤵
      • Adds policy Run key to start application
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1256
      • 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
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:268
        • C:\Windows\SysWOW64\reg.exe
          REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • Modifies firewall policy service
          • Modifies registry key
          PID:452
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Local\Temp\bcb72ffc7af798ea42e0ef8dc9617b736433a5667f9e88f96cfea5b24b796b0b.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\bcb72ffc7af798ea42e0ef8dc9617b736433a5667f9e88f96cfea5b24b796b0b.exe:*:Enabled:Windows Messanger" /f
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:468
        • C:\Windows\SysWOW64\reg.exe
          REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Local\Temp\bcb72ffc7af798ea42e0ef8dc9617b736433a5667f9e88f96cfea5b24b796b0b.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\bcb72ffc7af798ea42e0ef8dc9617b736433a5667f9e88f96cfea5b24b796b0b.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • Modifies firewall policy service
          • Modifies registry key
          PID:916
      • 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
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1348
        • C:\Windows\SysWOW64\reg.exe
          REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • Modifies firewall policy service
          • Modifies registry key
          PID:1884
      • 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\Microsoft\Audiolog.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Audiolog.exe:*:Enabled:Windows Messanger" /f
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1640
        • C:\Windows\SysWOW64\reg.exe
          REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Microsoft\Audiolog.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Audiolog.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • Modifies firewall policy service
          • Modifies registry key
          PID:1116

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

2
T1060

Defense Evasion

Modify Registry

4
T1112

Replay Monitor

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Downloads

  • memory/268-70-0x0000000000000000-mapping.dmp
  • memory/452-75-0x0000000000000000-mapping.dmp
  • memory/468-71-0x0000000000000000-mapping.dmp
  • memory/916-76-0x0000000000000000-mapping.dmp
  • memory/1116-74-0x0000000000000000-mapping.dmp
  • memory/1256-69-0x0000000000400000-0x000000000047B000-memory.dmp
    Filesize

    492KB

  • memory/1256-64-0x0000000000400000-0x000000000047B000-memory.dmp
    Filesize

    492KB

  • memory/1256-68-0x0000000075BE1000-0x0000000075BE3000-memory.dmp
    Filesize

    8KB

  • memory/1256-56-0x0000000000400000-0x000000000047B000-memory.dmp
    Filesize

    492KB

  • memory/1256-63-0x0000000000400000-0x000000000047B000-memory.dmp
    Filesize

    492KB

  • memory/1256-61-0x0000000000479280-mapping.dmp
  • memory/1256-60-0x0000000000400000-0x000000000047B000-memory.dmp
    Filesize

    492KB

  • memory/1256-59-0x0000000000400000-0x000000000047B000-memory.dmp
    Filesize

    492KB

  • memory/1256-57-0x0000000000400000-0x000000000047B000-memory.dmp
    Filesize

    492KB

  • memory/1256-78-0x0000000000400000-0x000000000047B000-memory.dmp
    Filesize

    492KB

  • memory/1348-72-0x0000000000000000-mapping.dmp
  • memory/1640-73-0x0000000000000000-mapping.dmp
  • memory/1884-77-0x0000000000000000-mapping.dmp