Analysis

  • max time kernel
    151s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-03-2023 14:40

General

  • Target

    tmp.exe

  • Size

    1.3MB

  • MD5

    d8e622d9974ee940831e507fac715c94

  • SHA1

    7f6b6850c5146c6942148eae317387e5c85342ea

  • SHA256

    7988fe75eb1abeac99917732c69e0de5e96137b5a8f471b4c8af2ef378505312

  • SHA512

    6c5bd4dd4bfbb4c75bf392141446496473cf035ebfe6b70bdfe0278ec67ffbffdc4b9ba937ca80d5ef7ed80fa8ce6ca3ebd4e02821f155580377b503ed17a3d6

  • SSDEEP

    24576:V5F02vDR3+R4znIM4PkgW6REfPSt6BPoUi17+9QloSN3TEt8dni:fF/9RnIIgWBg+AUi1S9QCSNDEin

Malware Config

Extracted

Family

remcos

Botnet

Awele-Host

C2

gdyhjjdhbvxgsfe.gotdns.ch:2718

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    qos.exe

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Rmc-VC3F2C

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Jm

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 8 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2156
    • C:\Users\Admin\AppData\Local\Temp\tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4480
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\arvuijaizobunsvneavwwae.vbs"
        3⤵
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:4528
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\qos.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4876
          • C:\Users\Admin\AppData\Roaming\qos.exe
            C:\Users\Admin\AppData\Roaming\qos.exe
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:4640
            • C:\Users\Admin\AppData\Roaming\qos.exe
              "C:\Users\Admin\AppData\Roaming\qos.exe"
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • Suspicious use of SetWindowsHookEx
              PID:4884

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\arvuijaizobunsvneavwwae.vbs

    Filesize

    398B

    MD5

    8e2a1197a839a92a232ec1bc06a9cf69

    SHA1

    a501c184e874983afccbde838f3260dfb7d62527

    SHA256

    e10a418a00a6de27cf1c4b5e46f7543c290afc801835efa99b633ee3d75f7571

    SHA512

    26a35fa937a7d63f120b40331ed6370832d690d49b5cc0aa74350f9a7eaefa9f6433df6647ef5974a5de3ac055841166cf5543eb4002d831ecac05c3c896eaaf

  • C:\Users\Admin\AppData\Roaming\qos.exe

    Filesize

    1.3MB

    MD5

    d8e622d9974ee940831e507fac715c94

    SHA1

    7f6b6850c5146c6942148eae317387e5c85342ea

    SHA256

    7988fe75eb1abeac99917732c69e0de5e96137b5a8f471b4c8af2ef378505312

    SHA512

    6c5bd4dd4bfbb4c75bf392141446496473cf035ebfe6b70bdfe0278ec67ffbffdc4b9ba937ca80d5ef7ed80fa8ce6ca3ebd4e02821f155580377b503ed17a3d6

  • C:\Users\Admin\AppData\Roaming\qos.exe

    Filesize

    1.3MB

    MD5

    d8e622d9974ee940831e507fac715c94

    SHA1

    7f6b6850c5146c6942148eae317387e5c85342ea

    SHA256

    7988fe75eb1abeac99917732c69e0de5e96137b5a8f471b4c8af2ef378505312

    SHA512

    6c5bd4dd4bfbb4c75bf392141446496473cf035ebfe6b70bdfe0278ec67ffbffdc4b9ba937ca80d5ef7ed80fa8ce6ca3ebd4e02821f155580377b503ed17a3d6

  • C:\Users\Admin\AppData\Roaming\qos.exe

    Filesize

    1.3MB

    MD5

    d8e622d9974ee940831e507fac715c94

    SHA1

    7f6b6850c5146c6942148eae317387e5c85342ea

    SHA256

    7988fe75eb1abeac99917732c69e0de5e96137b5a8f471b4c8af2ef378505312

    SHA512

    6c5bd4dd4bfbb4c75bf392141446496473cf035ebfe6b70bdfe0278ec67ffbffdc4b9ba937ca80d5ef7ed80fa8ce6ca3ebd4e02821f155580377b503ed17a3d6

  • memory/2156-139-0x0000000005A80000-0x0000000005A90000-memory.dmp

    Filesize

    64KB

  • memory/2156-137-0x0000000005A80000-0x0000000005A90000-memory.dmp

    Filesize

    64KB

  • memory/2156-133-0x0000000000CF0000-0x0000000000E3A000-memory.dmp

    Filesize

    1.3MB

  • memory/2156-140-0x00000000087E0000-0x000000000887C000-memory.dmp

    Filesize

    624KB

  • memory/2156-134-0x0000000006040000-0x00000000065E4000-memory.dmp

    Filesize

    5.6MB

  • memory/2156-135-0x0000000005B90000-0x0000000005C22000-memory.dmp

    Filesize

    584KB

  • memory/2156-138-0x0000000008530000-0x00000000086D6000-memory.dmp

    Filesize

    1.6MB

  • memory/2156-136-0x0000000005C30000-0x0000000005C3A000-memory.dmp

    Filesize

    40KB

  • memory/4480-144-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4480-150-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4480-147-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4480-142-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4480-141-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4640-155-0x0000000004940000-0x0000000004950000-memory.dmp

    Filesize

    64KB

  • memory/4640-156-0x0000000004940000-0x0000000004950000-memory.dmp

    Filesize

    64KB

  • memory/4884-159-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4884-161-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4884-162-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4884-164-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4884-165-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4884-166-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4884-169-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB