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Analysis

  • max time kernel
    121s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    06/10/2024, 17:39

General

  • Target

    cayV0Deo9jSt417.exe

  • Size

    958KB

  • MD5

    aa3cdd5145d9fb980c061d2d8653fa8d

  • SHA1

    de696701275b01ddad5461e269d7ab15b7466d6a

  • SHA256

    41376827ba300374727d29048920ca2a2d9f20b929e964098181981581e47af2

  • SHA512

    4be32b5e9eaffa8d3f4cce515717faa6259373e8dbd258b9ebc2534fd0b62aaa7043093204e43627983fe332f63d8f998a90dc1cbb74f54a18c55f67e42a8a32

  • SSDEEP

    24576:PExy+NP2Gc/hgXzYRVG7mRPQeMeokqjVnlqud+/2P+A:6+Gc/hD67mJQeMhkqXfd+/9A

Malware Config

Extracted

Family

remcos

Botnet

Go!!!

C2

dangerous.hopto.org:2404

dangerous.hopto.org:2602

91.92.242.184:2602

91.92.242.184:2404

Attributes
  • audio_folder

    ??????????? ??????

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    taskhost.exe

  • copy_folder

    System32

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    tapiui.dat

  • keylog_flag

    false

  • keylog_folder

    System32

  • mouse_option

    false

  • mutex

    ???-LDKG91

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    ?????????

  • 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.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cayV0Deo9jSt417.exe
    "C:\Users\Admin\AppData\Local\Temp\cayV0Deo9jSt417.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2668
    • C:\Windows\SysWOW64\clip.exe
      "C:\Windows\SysWOW64\clip.exe"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2784
      • C:\Users\Admin\AppData\Roaming\System32\taskhost.exe
        "C:\Users\Admin\AppData\Roaming\System32\taskhost.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2852

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Roaming\System32\taskhost.exe

    Filesize

    25KB

    MD5

    04ebddcc3a90b6512aef4aa2eee36624

    SHA1

    185cd595c19dec765d5fcbdff914140b5354a864

    SHA256

    1c4b1acf31ec2dd48c746ad7cf2cc1404c76c7492bd15a6953f2ce6991496856

    SHA512

    fbb7d67593018cd5a12355800b8e2974ad8f04918fafedb89c98fe3ed9cde53fa3ae91e26474cb9d2b1f9e4f7b6267ba1eece6f02ae5df20e95ce94bbb1f28da

  • memory/2668-0-0x00000000742AE000-0x00000000742AF000-memory.dmp

    Filesize

    4KB

  • memory/2668-1-0x0000000001050000-0x0000000001146000-memory.dmp

    Filesize

    984KB

  • memory/2668-2-0x0000000000370000-0x0000000000378000-memory.dmp

    Filesize

    32KB

  • memory/2668-3-0x00000000003E0000-0x00000000003FA000-memory.dmp

    Filesize

    104KB

  • memory/2668-4-0x00000000742A0000-0x000000007498E000-memory.dmp

    Filesize

    6.9MB

  • memory/2668-5-0x0000000000B90000-0x0000000000C36000-memory.dmp

    Filesize

    664KB

  • memory/2668-9-0x00000000742A0000-0x000000007498E000-memory.dmp

    Filesize

    6.9MB

  • memory/2784-6-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2784-10-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2784-8-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2784-17-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB