Resubmissions

05-02-2025 18:49

250205-xgj5ds1jen 6

05-02-2025 09:29

250205-lgd3lazqe1 6

05-02-2025 07:57

250205-js8p8sypbn 6

04-02-2025 16:25

250204-tww6qa1ray 6

04-02-2025 16:16

250204-tq96dstkcn 10

22-01-2025 11:24

250122-nh5m2svlcr 6

Analysis

  • max time kernel
    297s
  • max time network
    275s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20250128-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20250128-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    04-02-2025 16:16

General

  • Target

    2025-01-22_21d52d07f0f04e0934011978a85e6a15_avoslocker_luca-stealer.exe

  • Size

    3.3MB

  • MD5

    21d52d07f0f04e0934011978a85e6a15

  • SHA1

    07647f0eddf46d19e0864624b22236b2cdf561a1

  • SHA256

    35612c79bde985c957ba521bbc7aa8541c31fb235ca7a91d0ee225f988921eb4

  • SHA512

    0338a651fbbbd327dc4fa97f72106db9dafced3226823b2149ec2567745c492c051b9a6a2210ccc0ffc5345a6dad9f3764aeed5cd77562ab6202dd977c59480a

  • SSDEEP

    98304:8KsW1+M5NCnvjZEb9B7Z9B7Gy5p6v8u9B7:81yy2j7Zj7j5p6Rj7

Malware Config

Extracted

Family

remcos

Botnet

fuck

C2

republicadominica2025.ip-ddns.com:30202

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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

    rostad

  • mouse_option

    false

  • mutex

    iwebfiewbfihbewlfkm-WH4782

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Remcos family
  • Downloads MZ/PE file 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 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 behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-01-22_21d52d07f0f04e0934011978a85e6a15_avoslocker_luca-stealer.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-01-22_21d52d07f0f04e0934011978a85e6a15_avoslocker_luca-stealer.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4176
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
      2⤵
      • Downloads MZ/PE file
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1464
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1268

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\rostad\logs.dat

    Filesize

    184B

    MD5

    64899017f90e95f8b778c85dcf6db0fe

    SHA1

    7fc52ee2dac30c8e34c8a24de785f642e1696d9d

    SHA256

    80455a1582b7e25a43504bfe677e01d5b95954f5f4200258f6e5efc7f5e92612

    SHA512

    734eb3abd96a06fc6b107b133b622bcda1a1e241775af86dc5ffecc8c528e53574887c20ff65dc3b269cc4217c40e3765bef8fbeb0c8fac9504640037a1f198a

  • memory/1268-1898-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/1268-1907-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/1464-40-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-66-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-32-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-7-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-18-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-50-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-68-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-36-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-64-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-62-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-61-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-58-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-38-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-54-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-52-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-48-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-46-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-44-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-42-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-4-0x0000000000820000-0x00000000008AE000-memory.dmp

    Filesize

    568KB

  • memory/1464-56-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-1890-0x0000000005C30000-0x0000000005C84000-memory.dmp

    Filesize

    336KB

  • memory/1464-6-0x0000000002B10000-0x0000000002BD8000-memory.dmp

    Filesize

    800KB

  • memory/1464-31-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-29-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-26-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-24-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-23-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-20-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-16-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-14-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-12-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-10-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-8-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-34-0x0000000002B10000-0x0000000002BD3000-memory.dmp

    Filesize

    780KB

  • memory/1464-1887-0x0000000005410000-0x0000000005466000-memory.dmp

    Filesize

    344KB

  • memory/1464-1888-0x0000000005470000-0x00000000054BC000-memory.dmp

    Filesize

    304KB

  • memory/1464-1889-0x0000000005580000-0x00000000055E6000-memory.dmp

    Filesize

    408KB

  • memory/4176-5-0x0000000002740000-0x000000000279C000-memory.dmp

    Filesize

    368KB

  • memory/4176-0-0x0000000000400000-0x0000000000758000-memory.dmp

    Filesize

    3.3MB

  • memory/4176-3-0x0000000000D30000-0x0000000000D5D000-memory.dmp

    Filesize

    180KB

  • memory/4176-1-0x0000000000400000-0x0000000000758000-memory.dmp

    Filesize

    3.3MB