Analysis

  • max time kernel
    149s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2024 03:38

General

  • Target

    f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe

  • Size

    908KB

  • MD5

    0a91b0a960e1cb925434f0ded97e30b7

  • SHA1

    ea0ed432c0cdb5f86cde1b17850a77b68ad71af4

  • SHA256

    f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b

  • SHA512

    37d4fbd29f3a5b274545f4864f9005b814410e35abc94c106e433ecd5c403a230eb2ca38d1d20aaa1f29ad0fbef5997c0c0cae37c2237b165e2eb5778dd2f7e4

  • SSDEEP

    24576:Mo7x/alQteiW/C+sHTTPrCehcxQv4Zj6CSy:Mc/zhWK+vC4ZIy

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

206.189.218.238:4782

206.189.218.238:2286

206.189.218.238:3363

206.189.218.238:3386

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

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-NJK093

  • screenshot_crypt

    false

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Remcos family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe
    "C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2272
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wGvcmEX.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2168
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wGvcmEX" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA110.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2772
    • C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe
      "C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2904
      • C:\ProgramData\Remcos\remcos.exe
        "C:\ProgramData\Remcos\remcos.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2840
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wGvcmEX.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2172
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wGvcmEX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp28A6.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2244
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:1528

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Remcos\logs.dat

    Filesize

    144B

    MD5

    478c984ea2b8b19f63b9f3186a2a71bc

    SHA1

    995671e5a1c8740697a6726c329dff9538296de1

    SHA256

    0f2cf33bff64870f11af716992209e74459bb58624564e9727ae35df3c76b6b3

    SHA512

    1d3b420f63761984d39fdad382aaaac18ac14eb213fd5fc6065819549bd592aa23cfd8b0aaf11e485138be5a62079a350658b85ae4de65ad3efaca7183df2766

  • C:\ProgramData\Remcos\remcos.exe

    Filesize

    908KB

    MD5

    0a91b0a960e1cb925434f0ded97e30b7

    SHA1

    ea0ed432c0cdb5f86cde1b17850a77b68ad71af4

    SHA256

    f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b

    SHA512

    37d4fbd29f3a5b274545f4864f9005b814410e35abc94c106e433ecd5c403a230eb2ca38d1d20aaa1f29ad0fbef5997c0c0cae37c2237b165e2eb5778dd2f7e4

  • C:\Users\Admin\AppData\Local\Temp\tmpA110.tmp

    Filesize

    1KB

    MD5

    525024d19d4abe6ff9902ec77d1de173

    SHA1

    83e9a73c10faa2cc901030eea3524e6758d151ff

    SHA256

    612a65da10a0960e39150e8889e4932d99dedfd6f6a53806ed61bfb7e5973d05

    SHA512

    e56014e316c49a20ab9257b294752cdc8a11eba897567c845551ea7474873116de8be207faed84a2556e5ce8ac360e939bb70aa6c6ab776fa9380b5f9ff20725

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\X1ZK9NFAQNKOFLTVQODL.temp

    Filesize

    7KB

    MD5

    5ca32abc2d988961962b0b7ac832101a

    SHA1

    4bdaf4a70b4a336d425f453cf4572ea97af749d5

    SHA256

    ba27c39b42e56ff5ff3b4637ac57f06b2ede61f4e020e7cdb94e26a05ed3e34a

    SHA512

    0d565e1c1a1eec875d22a5fd33f1a5731eb018672f13fbb7faad18abe4bb4b86d7ff5b8b5af277b8b06fa8d5a125f2cbaa755b166b743ad289235728c40e54ee

  • memory/1528-94-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1528-86-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1528-80-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1528-60-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1528-65-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1528-68-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1528-69-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1528-70-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1528-63-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2272-5-0x0000000004D90000-0x0000000004E54000-memory.dmp

    Filesize

    784KB

  • memory/2272-31-0x0000000074AC0000-0x00000000751AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2272-2-0x0000000074AC0000-0x00000000751AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2272-1-0x0000000000CD0000-0x0000000000DBA000-memory.dmp

    Filesize

    936KB

  • memory/2272-4-0x0000000074AC0000-0x00000000751AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2272-3-0x0000000000390000-0x00000000003A2000-memory.dmp

    Filesize

    72KB

  • memory/2272-0-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

    Filesize

    4KB

  • memory/2840-38-0x00000000010B0000-0x000000000119A000-memory.dmp

    Filesize

    936KB

  • memory/2840-41-0x0000000005BD0000-0x0000000005C94000-memory.dmp

    Filesize

    784KB

  • memory/2904-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2904-23-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2904-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2904-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2904-29-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2904-28-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2904-11-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2904-13-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2904-20-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2904-15-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2904-17-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB