Analysis

  • max time kernel
    154s
  • max time network
    162s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    14-07-2022 04:35

General

  • Target

    110bc33bdd915c5738f427019eaacf53.exe

  • Size

    2.9MB

  • MD5

    110bc33bdd915c5738f427019eaacf53

  • SHA1

    089e1d1676bc0d99bbd8233c4673a2abd3e389b8

  • SHA256

    da250da3b237fd0acf29d52066c84d56da4f92e5e854c71b5d6a4d7b121dae9c

  • SHA512

    5960838f53dfc3e9b31d829c6fd1a4d36b3e36d63339fdc73ae70d1fe2c6ee55776e8e7053b5ad06330ed09cbbd07caf606b643469b1d0890dfb81c7477b70a3

Malware Config

Extracted

Family

remcos

Botnet

RH1

C2

185.29.9.125:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    itunes.exe

  • copy_folder

    RMS

  • delete_file

    true

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Jd1985-XODZWD

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Rms

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    notepad;solitaire;

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • UAC bypass 3 TTPs 2 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks BIOS information in registry 2 TTPs 6 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Deletes itself 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Themida packer 45 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry key 1 TTPs 2 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\110bc33bdd915c5738f427019eaacf53.exe
    "C:\Users\Admin\AppData\Local\Temp\110bc33bdd915c5738f427019eaacf53.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of WriteProcessMemory
    PID:1092
    • C:\Windows\SysWOW64\cmd.exe
      /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1648
      • C:\Windows\SysWOW64\reg.exe
        C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        3⤵
        • UAC bypass
        • Modifies registry key
        PID:1108
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1052
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\RMS\itunes.exe"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2028
        • C:\Users\Admin\AppData\Roaming\RMS\itunes.exe
          C:\Users\Admin\AppData\Roaming\RMS\itunes.exe
          4⤵
          • Identifies VirtualBox via ACPI registry values (likely anti-VM)
          • Executes dropped EXE
          • Checks BIOS information in registry
          • Adds Run key to start application
          • Checks whether UAC is enabled
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:268
          • C:\Windows\SysWOW64\svchost.exe
            C:\Windows\SysWOW64\svchost.exe
            5⤵
            • Identifies VirtualBox via ACPI registry values (likely anti-VM)
            • Checks BIOS information in registry
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            PID:1176
          • C:\Windows\SysWOW64\cmd.exe
            /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1400
            • C:\Windows\SysWOW64\reg.exe
              C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
              6⤵
              • UAC bypass
              • Modifies registry key
              PID:608

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\install.vbs
    Filesize

    588B

    MD5

    91706e74a9483616294671481d07629c

    SHA1

    bb160f96e7f7b63710786ef640093e681cba56fe

    SHA256

    88f5689101a647616f50f3cc00ab6a429c4a7448133cfaa3d65cc1004d142258

    SHA512

    92c9e800ce50168eaeba6ab0f3aab0d144ab06fafc621ea7b5c99dc1e76ae0de0f38b12c6d171831ee741dcd0fd06d224a6d90c641183ae2e3e3cba78573e1dc

  • C:\Users\Admin\AppData\Roaming\RMS\itunes.exe
    Filesize

    2.9MB

    MD5

    110bc33bdd915c5738f427019eaacf53

    SHA1

    089e1d1676bc0d99bbd8233c4673a2abd3e389b8

    SHA256

    da250da3b237fd0acf29d52066c84d56da4f92e5e854c71b5d6a4d7b121dae9c

    SHA512

    5960838f53dfc3e9b31d829c6fd1a4d36b3e36d63339fdc73ae70d1fe2c6ee55776e8e7053b5ad06330ed09cbbd07caf606b643469b1d0890dfb81c7477b70a3

  • C:\Users\Admin\AppData\Roaming\RMS\itunes.exe
    Filesize

    2.9MB

    MD5

    110bc33bdd915c5738f427019eaacf53

    SHA1

    089e1d1676bc0d99bbd8233c4673a2abd3e389b8

    SHA256

    da250da3b237fd0acf29d52066c84d56da4f92e5e854c71b5d6a4d7b121dae9c

    SHA512

    5960838f53dfc3e9b31d829c6fd1a4d36b3e36d63339fdc73ae70d1fe2c6ee55776e8e7053b5ad06330ed09cbbd07caf606b643469b1d0890dfb81c7477b70a3

  • \Users\Admin\AppData\Roaming\RMS\itunes.exe
    Filesize

    2.9MB

    MD5

    110bc33bdd915c5738f427019eaacf53

    SHA1

    089e1d1676bc0d99bbd8233c4673a2abd3e389b8

    SHA256

    da250da3b237fd0acf29d52066c84d56da4f92e5e854c71b5d6a4d7b121dae9c

    SHA512

    5960838f53dfc3e9b31d829c6fd1a4d36b3e36d63339fdc73ae70d1fe2c6ee55776e8e7053b5ad06330ed09cbbd07caf606b643469b1d0890dfb81c7477b70a3

  • \Users\Admin\AppData\Roaming\RMS\itunes.exe
    Filesize

    2.9MB

    MD5

    110bc33bdd915c5738f427019eaacf53

    SHA1

    089e1d1676bc0d99bbd8233c4673a2abd3e389b8

    SHA256

    da250da3b237fd0acf29d52066c84d56da4f92e5e854c71b5d6a4d7b121dae9c

    SHA512

    5960838f53dfc3e9b31d829c6fd1a4d36b3e36d63339fdc73ae70d1fe2c6ee55776e8e7053b5ad06330ed09cbbd07caf606b643469b1d0890dfb81c7477b70a3

  • memory/268-125-0x0000000000E60000-0x0000000001598000-memory.dmp
    Filesize

    7.2MB

  • memory/268-73-0x0000000000000000-mapping.dmp
  • memory/268-126-0x0000000077320000-0x00000000774A0000-memory.dmp
    Filesize

    1.5MB

  • memory/268-85-0x0000000000E60000-0x0000000001598000-memory.dmp
    Filesize

    7.2MB

  • memory/268-80-0x0000000000E60000-0x0000000001598000-memory.dmp
    Filesize

    7.2MB

  • memory/268-79-0x0000000000E60000-0x0000000001598000-memory.dmp
    Filesize

    7.2MB

  • memory/268-78-0x0000000000E60000-0x0000000001598000-memory.dmp
    Filesize

    7.2MB

  • memory/268-87-0x0000000077320000-0x00000000774A0000-memory.dmp
    Filesize

    1.5MB

  • memory/268-77-0x0000000000E60000-0x0000000001598000-memory.dmp
    Filesize

    7.2MB

  • memory/268-76-0x0000000000E60000-0x0000000001598000-memory.dmp
    Filesize

    7.2MB

  • memory/608-86-0x0000000000000000-mapping.dmp
  • memory/1052-63-0x0000000000000000-mapping.dmp
  • memory/1092-65-0x00000000003D0000-0x0000000000B08000-memory.dmp
    Filesize

    7.2MB

  • memory/1092-56-0x00000000003D0000-0x0000000000B08000-memory.dmp
    Filesize

    7.2MB

  • memory/1092-55-0x00000000003D0000-0x0000000000B08000-memory.dmp
    Filesize

    7.2MB

  • memory/1092-57-0x00000000003D0000-0x0000000000B08000-memory.dmp
    Filesize

    7.2MB

  • memory/1092-58-0x00000000003D0000-0x0000000000B08000-memory.dmp
    Filesize

    7.2MB

  • memory/1092-59-0x00000000003D0000-0x0000000000B08000-memory.dmp
    Filesize

    7.2MB

  • memory/1092-66-0x0000000077320000-0x00000000774A0000-memory.dmp
    Filesize

    1.5MB

  • memory/1092-61-0x00000000003D0000-0x0000000000B08000-memory.dmp
    Filesize

    7.2MB

  • memory/1092-54-0x00000000752A1000-0x00000000752A3000-memory.dmp
    Filesize

    8KB

  • memory/1092-62-0x0000000077320000-0x00000000774A0000-memory.dmp
    Filesize

    1.5MB

  • memory/1108-64-0x0000000000000000-mapping.dmp
  • memory/1176-90-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-110-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-128-0x0000000077320000-0x00000000774A0000-memory.dmp
    Filesize

    1.5MB

  • memory/1176-88-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-127-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-92-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-93-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-95-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-94-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-97-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-99-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-101-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-100-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-103-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-105-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-106-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-107-0x000000000089B318-mapping.dmp
  • memory/1176-124-0x0000000000401000-0x0000000000454000-memory.dmp
    Filesize

    332KB

  • memory/1176-111-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-112-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-113-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-114-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-115-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-116-0x0000000077320000-0x00000000774A0000-memory.dmp
    Filesize

    1.5MB

  • memory/1176-117-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-118-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-119-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-120-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-121-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-122-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1176-123-0x0000000000400000-0x0000000000B38000-memory.dmp
    Filesize

    7.2MB

  • memory/1400-82-0x0000000000000000-mapping.dmp
  • memory/1648-60-0x0000000000000000-mapping.dmp
  • memory/2028-83-0x0000000002000000-0x0000000002738000-memory.dmp
    Filesize

    7.2MB

  • memory/2028-69-0x0000000000000000-mapping.dmp
  • memory/2028-81-0x0000000002000000-0x0000000002738000-memory.dmp
    Filesize

    7.2MB