Analysis

  • max time kernel
    166s
  • max time network
    170s
  • platform
    windows10_x64
  • resource
    win10-en
  • submitted
    06-09-2021 06:39

General

  • Target

    cac423609eba872cb328488b7aaa34e0d78de5ed46a63ba249335db79913a9f4.exe

  • Size

    1011KB

  • MD5

    19c46de9b1bf0e8c058b66f1a0208ba8

  • SHA1

    3e744b7cae11e14899d85984b92e4f2567ea80d2

  • SHA256

    cac423609eba872cb328488b7aaa34e0d78de5ed46a63ba249335db79913a9f4

  • SHA512

    ceb1ae59af4b28bdd0ef9c45d2599bb8714a90c7c940099a33501f9864c3a76434d03714d4af95a2fd3b15534dc224c434e669833a281eb210ce8036e56b72ea

Score
10/10

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

10

C2

abujafirms.com:2244

yokiri.com:2244

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • 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

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-I2Z97W

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    wikipedia;solitaire;

Signatures

  • Remcos

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

  • Executes dropped EXE 3 IoCs
  • Drops startup file 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cac423609eba872cb328488b7aaa34e0d78de5ed46a63ba249335db79913a9f4.exe
    "C:\Users\Admin\AppData\Local\Temp\cac423609eba872cb328488b7aaa34e0d78de5ed46a63ba249335db79913a9f4.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3936
    • C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\system32\notepad.exe"
      2⤵
      • Drops startup file
      • NTFS ADS
      • Suspicious use of WriteProcessMemory
      PID:3928
      • C:\Users\Admin\AppData\Roaming\AppData\QAZ223.exe
        "C:\Users\Admin\AppData\Roaming\AppData\QAZ223.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:3716
        • C:\Users\Admin\AppData\Roaming\AppData\QAZ223.exe
          "C:\Users\Admin\AppData\Roaming\AppData\QAZ223.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetWindowsHookEx
          PID:3956
        • C:\Users\Admin\AppData\Roaming\AppData\QAZ223.exe
          "C:\Users\Admin\AppData\Roaming\AppData\QAZ223.exe" 2 3956 259289546
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          PID:1988

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\AppData\QAZ223.exe
    MD5

    19c46de9b1bf0e8c058b66f1a0208ba8

    SHA1

    3e744b7cae11e14899d85984b92e4f2567ea80d2

    SHA256

    cac423609eba872cb328488b7aaa34e0d78de5ed46a63ba249335db79913a9f4

    SHA512

    ceb1ae59af4b28bdd0ef9c45d2599bb8714a90c7c940099a33501f9864c3a76434d03714d4af95a2fd3b15534dc224c434e669833a281eb210ce8036e56b72ea

  • C:\Users\Admin\AppData\Roaming\AppData\QAZ223.exe
    MD5

    19c46de9b1bf0e8c058b66f1a0208ba8

    SHA1

    3e744b7cae11e14899d85984b92e4f2567ea80d2

    SHA256

    cac423609eba872cb328488b7aaa34e0d78de5ed46a63ba249335db79913a9f4

    SHA512

    ceb1ae59af4b28bdd0ef9c45d2599bb8714a90c7c940099a33501f9864c3a76434d03714d4af95a2fd3b15534dc224c434e669833a281eb210ce8036e56b72ea

  • C:\Users\Admin\AppData\Roaming\AppData\QAZ223.exe
    MD5

    19c46de9b1bf0e8c058b66f1a0208ba8

    SHA1

    3e744b7cae11e14899d85984b92e4f2567ea80d2

    SHA256

    cac423609eba872cb328488b7aaa34e0d78de5ed46a63ba249335db79913a9f4

    SHA512

    ceb1ae59af4b28bdd0ef9c45d2599bb8714a90c7c940099a33501f9864c3a76434d03714d4af95a2fd3b15534dc224c434e669833a281eb210ce8036e56b72ea

  • C:\Users\Admin\AppData\Roaming\AppData\QAZ223.exe
    MD5

    19c46de9b1bf0e8c058b66f1a0208ba8

    SHA1

    3e744b7cae11e14899d85984b92e4f2567ea80d2

    SHA256

    cac423609eba872cb328488b7aaa34e0d78de5ed46a63ba249335db79913a9f4

    SHA512

    ceb1ae59af4b28bdd0ef9c45d2599bb8714a90c7c940099a33501f9864c3a76434d03714d4af95a2fd3b15534dc224c434e669833a281eb210ce8036e56b72ea

  • memory/1988-127-0x0000000000000000-mapping.dmp
  • memory/1988-132-0x00000000005E0000-0x000000000072A000-memory.dmp
    Filesize

    1.3MB

  • memory/1988-131-0x0000000000510000-0x00000000005BE000-memory.dmp
    Filesize

    696KB

  • memory/1988-130-0x0000000000510000-0x00000000005BE000-memory.dmp
    Filesize

    696KB

  • memory/3716-119-0x0000000000000000-mapping.dmp
  • memory/3716-124-0x0000000002180000-0x0000000002181000-memory.dmp
    Filesize

    4KB

  • memory/3716-123-0x0000000000510000-0x00000000005BE000-memory.dmp
    Filesize

    696KB

  • memory/3928-122-0x00000000003F0000-0x00000000003F1000-memory.dmp
    Filesize

    4KB

  • memory/3928-118-0x0000000000000000-mapping.dmp
  • memory/3936-116-0x00000000023B0000-0x00000000023C0000-memory.dmp
    Filesize

    64KB

  • memory/3936-115-0x0000000002340000-0x0000000002341000-memory.dmp
    Filesize

    4KB

  • memory/3936-117-0x00000000023D0000-0x00000000023D1000-memory.dmp
    Filesize

    4KB

  • memory/3956-125-0x0000000000413A84-mapping.dmp
  • memory/3956-129-0x0000000000400000-0x0000000000420000-memory.dmp
    Filesize

    128KB