Analysis

  • max time kernel
    150s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    09-09-2024 13:38

General

  • Target

    Deposit 47800 USD.png.exe

  • Size

    903KB

  • MD5

    ede0315b2253c133fb9fb6c32c1b4d24

  • SHA1

    4c11d887e2fa02dd967a4a723f1b92253d738411

  • SHA256

    c4e002e24dc01a9ec412049b3ee298bf7ede32caf604a7a0cf61711d9d3f2bd7

  • SHA512

    a1e105987b844947c448b3b08228368464daa160810fd9cd3100bede7dead786308c6f4da20e21203726795e1b2f21762339b42304a2ee91f417799e4555cb0d

  • SSDEEP

    12288:mznnX1BNRZ9v1H5SutQJ9NNzRF/AIyDQTt+C6UUmcPBUDoD5zluKiS59GmMi1s6X:+BfR5SutmXRFY9rJUUm+BPV4CRTkE

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

103.186.116.111:4440

google-com-site-backup.duckdns.org:4440

103.186.116.111:5656

codingoffensive.duckdns.org:5656

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    ssl

  • mouse_option

    false

  • mutex

    Rmc-XHK5L2

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Deposit 47800 USD.png.exe
    "C:\Users\Admin\AppData\Local\Temp\Deposit 47800 USD.png.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2124
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Deposit 47800 USD.png.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2256
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZldrOZt.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2408
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZldrOZt" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBDB4.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2404
    • C:\Users\Admin\AppData\Local\Temp\Deposit 47800 USD.png.exe
      "C:\Users\Admin\AppData\Local\Temp\Deposit 47800 USD.png.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2188

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\ssl\logs.dat

    Filesize

    144B

    MD5

    a0d41b8adbcce6fbec0be5908f43c14e

    SHA1

    8129512e91a93b9e83ea32f4624f2f53512527cd

    SHA256

    ea1bec5eb369e4bc995333ece2748ac26ea07f91e88ecd60f5dfa88d3e1e22b9

    SHA512

    762776eaba4c9650f8740b9a65f589dcd36a17acfb94d76570e7648a693d61d26f4d724fe2cfcf8723481e91282ca8b3e3d65b22353110f51310d9deb544e81f

  • C:\Users\Admin\AppData\Local\Temp\tmpBDB4.tmp

    Filesize

    1KB

    MD5

    8c603737ac432642d61c3a97da6ff34f

    SHA1

    ae35b475336a2966c134a1d6a5135b0fa4b7c4b9

    SHA256

    58e97e5865e56cc28ce85fbccc9923675adfb6ed4f2cb400d597b190a744a009

    SHA512

    e9474d3886b689a578177c2b129c00423e35e3154267690878506feba8c0ed1cda98a26deb447267d5e4f7a815f181b7fd5c087f81723892bec796dcd7b723ab

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\51ST4M0FVC5CEPA17EUC.temp

    Filesize

    7KB

    MD5

    acf6b577edcc4b396d4ca5c611da3f30

    SHA1

    53bf7726c4efdcd181887c1d6f273fc9507a67eb

    SHA256

    02f537d4ba364f8138d668b368fd8e249e7d8e31d0fddfc24cb4fe27eecd0cb9

    SHA512

    5967b2477d661554c3a238e622265776a0fc2288a42b2e3fb2aee9cdeded7acf50a58479631693202a27a7bf360c3ff337441b560e6f709bda95c76dfc0c9300

  • memory/2124-43-0x0000000074290000-0x000000007497E000-memory.dmp

    Filesize

    6.9MB

  • memory/2124-1-0x0000000000B30000-0x0000000000C18000-memory.dmp

    Filesize

    928KB

  • memory/2124-2-0x0000000074290000-0x000000007497E000-memory.dmp

    Filesize

    6.9MB

  • memory/2124-3-0x0000000000240000-0x0000000000250000-memory.dmp

    Filesize

    64KB

  • memory/2124-4-0x000000007429E000-0x000000007429F000-memory.dmp

    Filesize

    4KB

  • memory/2124-5-0x0000000074290000-0x000000007497E000-memory.dmp

    Filesize

    6.9MB

  • memory/2124-6-0x0000000005F70000-0x0000000006030000-memory.dmp

    Filesize

    768KB

  • memory/2124-0-0x000000007429E000-0x000000007429F000-memory.dmp

    Filesize

    4KB

  • memory/2188-30-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-45-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-41-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2188-33-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-31-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-42-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-47-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-46-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-44-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-48-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-51-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-55-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-58-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-59-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-68-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-67-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-76-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2188-77-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB