Overview

overview

10

Static

static

10

FDA_CERT.exe

windows7_x64

10

FDA_CERT.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    165s
  • max time network
    168s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 01:28

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General

  • Target

    FDA_CERT.exe

  • Size

    371KB

  • MD5

    9c547767c3059a4aa991b4b4413725bb

  • SHA1

    fd83c2cf73a959255d01abca9d681af4c62d5dbf

  • SHA256

    246fb765947ed62ef616f5f714642ff0db639983582c0fa2cbab9ad251669b78

  • SHA512

    1a3e2250804bc524750cdf3517b51af04e6988bc080a2d35468fc2e16758b6cd8970ff416ce0a009cbda387b31aaa0e698e8e5d1aba3f60c6110e069e4c1b1b7

Score
10/10
remcoshostrat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

kmt.duckdns.org:3039

kmt-2.duckdns.org:3039
Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • 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_vejtzxohypibcpz

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

Signatures

  • Remcos

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

    ratremcos
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

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

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

    persistence
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FDA_CERT.exe
    "C:\Users\Admin\AppData\Local\Temp\FDA_CERT.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3284
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HXAjzs" /XML "C:\Users\Admin\AppData\Local\Temp\tmpADAA.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4612
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
      "{path}"
      2⤵
        PID:3244

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Credential Access

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpADAA.tmp
      Filesize

      1KB

      MD5

      07fde2b53a26272360c348010614dbb3

      SHA1

      5a11dc719476704b2cc35321793b7ce168d53828

      SHA256

      8fbf8dbb8fd8c94643db96d4dd16a1048416dbea92d8ecaf077b2120492169f2

      SHA512

      ee9b925ed30f075514f60e5c1aa370cd7f2087949a0f220ba46ec2d23de6a271a4de7c9d9c9bd79dfb810536fdc03d4b4cbf24ace01872bae95465ef87c9f13b

      Download Submit
    • memory/3244-133-0x0000000000000000-mapping.dmp
      Download
    • memory/3244-134-0x0000000000400000-0x0000000000417000-memory.dmp
      Filesize

      92KB

      Download
    • memory/3244-136-0x0000000000400000-0x0000000000417000-memory.dmp
      Filesize

      92KB

      Download
    • memory/3244-137-0x0000000000400000-0x0000000000417000-memory.dmp
      Filesize

      92KB

      Download
    • memory/3284-130-0x0000000074F50000-0x0000000075501000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/4612-131-0x0000000000000000-mapping.dmp
      Download