Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-04-2023 06:57

General

  • Target

    91489557012035DraftBLFmKNNBRecd07Apr23CFM.exe

  • Size

    673KB

  • MD5

    7a22c075e6bb86f3a537fd592925d0f8

  • SHA1

    657dde8c6b11a14aa398481768079f3286e37360

  • SHA256

    37503c7646071d22653b6be7fdb8ec8d9abbfe8cbfca39650255c131b01f4fd2

  • SHA512

    9f1025ab193b0bfd7dfa38f59d2071f2f0293856fe6e1604e0667f93f0f15f241f7458d96c7992d382f7eb1ea6030b8156721dc0de95ad562a319544db655226

  • SSDEEP

    12288:KD+aLrg9LSA91a6XQYOg5f46XzsOpj2pMFr0sbOTWE:Ki08wU1a6Xv1B4oKMEW

Malware Config

Extracted

Family

remcos

Botnet

Razor

C2

20.251.10.189:2349

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

    true

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    oldosos.dat

  • keylog_flag

    false

  • keylog_path

    %UserProfile%

  • mouse_option

    false

  • mutex

    razorsoso-K5DGEB

  • 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

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Remcos

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

  • ModiLoader Second Stage 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\91489557012035DraftBLFmKNNBRecd07Apr23CFM.exe
    "C:\Users\Admin\AppData\Local\Temp\91489557012035DraftBLFmKNNBRecd07Apr23CFM.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5088
    • C:\Windows\SysWOW64\colorcpl.exe
      C:\Windows\System32\colorcpl.exe
      2⤵
        PID:4100

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4100-172-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-173-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-163-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-164-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-148-0x00000000045E0000-0x00000000045E1000-memory.dmp

      Filesize

      4KB

    • memory/4100-149-0x00000000046A0000-0x00000000046A1000-memory.dmp

      Filesize

      4KB

    • memory/4100-162-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-154-0x0000000004700000-0x0000000004701000-memory.dmp

      Filesize

      4KB

    • memory/4100-155-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-160-0x0000000010590000-0x0000000010613000-memory.dmp

      Filesize

      524KB

    • memory/4100-161-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-158-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-181-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-180-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-179-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-165-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-166-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-171-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-178-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-176-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/4100-174-0x0000000004790000-0x0000000004810000-memory.dmp

      Filesize

      512KB

    • memory/5088-135-0x0000000002240000-0x0000000002241000-memory.dmp

      Filesize

      4KB

    • memory/5088-133-0x0000000002260000-0x000000000228C000-memory.dmp

      Filesize

      176KB

    • memory/5088-147-0x0000000010590000-0x0000000010613000-memory.dmp

      Filesize

      524KB

    • memory/5088-136-0x0000000000400000-0x00000000004AE000-memory.dmp

      Filesize

      696KB

    • memory/5088-153-0x0000000010590000-0x0000000010613000-memory.dmp

      Filesize

      524KB