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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    24/09/2024, 09:07

General

  • Target

    8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe

  • Size

    883KB

  • MD5

    571902de75705d1aeaa32be01459dc65

  • SHA1

    4ccf3c9a339146008c1d8466857e13d3c7752a05

  • SHA256

    8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5

  • SHA512

    966381cdeaf8213fefdca876052a59dcda9e2436cfc50b4516eca936ebb9e75b9421058969526fa0b46d06067a43398a51c8e7201fa72d39faa0153c4328a9d7

  • SSDEEP

    24576:kBGzjcJ6NacNEyNOU+6cNuuH2SNcjmYY4Swv:kE86N1l5x8uuWSpYXS2

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:59321

nnamoo.duckdns.org:59321

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

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-41EVS0

  • 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

  • Remcos

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

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe
    "C:\Users\Admin\AppData\Local\Temp\8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1680
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2696
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\efsOOkOP.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2712
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\efsOOkOP" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC542.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2844
    • C:\Users\Admin\AppData\Local\Temp\8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe
      "C:\Users\Admin\AppData\Local\Temp\8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpC542.tmp

    Filesize

    1KB

    MD5

    2ef4ee134c6bf924cb09ae98ab4c4591

    SHA1

    51187ab8224e123d1b5f7b0719c1094ca86c200a

    SHA256

    ff94c6b9533a1391fcbed27afc9fd1bd43e1fdab29ba6054a3d0ba0e6b210ba2

    SHA512

    cbe3fb10a5d7275021e48d51affd0532fc035b4a4dc361ecf8fa51b551023d5f57a979d234a293566882621af6d8f76e8840f943ad0023a459368470ecab2edb

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    36748378161a1e939151df4026688a4e

    SHA1

    3fe8def622df600ac2c677c48204a2615842fe5c

    SHA256

    b5cd7e4ba73d4b6e98dd533eaee466bb2ecd64263100cd96aa390e07714d8f78

    SHA512

    c3d337261bfd9957b70316c85a5da9e8efa82ffd6f1cf894715f55c053c80d7062d8016b70bd2a822280d2cf362ba0f7ad33b26017b69276b4e36cc4e53283f6

  • memory/1680-40-0x0000000074750000-0x0000000074E3E000-memory.dmp

    Filesize

    6.9MB

  • memory/1680-1-0x0000000000FF0000-0x00000000010D4000-memory.dmp

    Filesize

    912KB

  • memory/1680-2-0x0000000074750000-0x0000000074E3E000-memory.dmp

    Filesize

    6.9MB

  • memory/1680-3-0x0000000000540000-0x0000000000552000-memory.dmp

    Filesize

    72KB

  • memory/1680-4-0x000000007475E000-0x000000007475F000-memory.dmp

    Filesize

    4KB

  • memory/1680-5-0x0000000074750000-0x0000000074E3E000-memory.dmp

    Filesize

    6.9MB

  • memory/1680-6-0x00000000053C0000-0x000000000547E000-memory.dmp

    Filesize

    760KB

  • memory/1680-0-0x000000007475E000-0x000000007475F000-memory.dmp

    Filesize

    4KB

  • memory/2776-19-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-41-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-37-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2776-33-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-31-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-29-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-39-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-36-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-27-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-25-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-24-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-21-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-38-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-42-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-43-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-44-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-45-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-46-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-47-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-50-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-51-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-52-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-53-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-54-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2776-55-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB