Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-07-2024 13:46

General

  • Target

    172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe

  • Size

    483KB

  • MD5

    2b985c758a227407855e1d8e14f8863d

  • SHA1

    993301bbe17c097debb66c6dec278d4f74063b41

  • SHA256

    1b7645def29702c924a9cff0a5234b8a697f6d89be75593a725cf8f7da8c7288

  • SHA512

    258627a5105f0d03f2cdf3f3980adc64f740fa0557a2e46e216e45ed8bf51424008aa2945795b8f215ae7ce8c83ff253ac0ef3a8b104c4a3beabc5c052eae0d9

  • SSDEEP

    6144:QXIktXfM8Lv86r9uVWAa2je4Z5zl4hgDHQQs4NTQjoHFsAOZZoAX0cNz5Gv:QX7tPMK8ctGe4Dzl4h2QnuPs/ZoGcv

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

maveing.duckdns.org:18576

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

    Notepo

  • keylog_path

    %Temp%

  • mouse_option

    false

  • mutex

    Rmc-F4JFYD

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 7 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe
    "C:\Users\Admin\AppData\Local\Temp\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:456
    • C:\Users\Admin\AppData\Local\Temp\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe
      C:\Users\Admin\AppData\Local\Temp\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\omopv"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:4192
    • C:\Users\Admin\AppData\Local\Temp\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe
      C:\Users\Admin\AppData\Local\Temp\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\ygthvfcm"
      2⤵
      • Accesses Microsoft Outlook accounts
      • System Location Discovery: System Language Discovery
      PID:4036
    • C:\Users\Admin\AppData\Local\Temp\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe
      C:\Users\Admin\AppData\Local\Temp\172200150645e30715396b41ed298fc2fc05d94f3a962536daa72f2c5d72e7d784323a4055802.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\bigawxmfsqv"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4972

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Notepo\logs.dat

    Filesize

    144B

    MD5

    b77998c3f0922fda6e0fe790bc4eda4f

    SHA1

    5d711a9e8057bbf746e596caee830da44aca8e85

    SHA256

    75ac6bf830d1846b8031cd3bfbadafce7b5364af43055e21e2b40b3887948f30

    SHA512

    2b31b0fbedfd3c1d1712a9bf344c4e4d23433fd22edc5887730b86aae04d64bb9aea1f1129c4b2ca69739265e93a7722c9152b0f0e7a7c2c570659759df44acd

  • C:\Users\Admin\AppData\Local\Temp\omopv

    Filesize

    4KB

    MD5

    463b5cfc270ed672e140fc2c1a25aec1

    SHA1

    23e37a49996b1208888e054fab11aa1e1a81f649

    SHA256

    2bd023dd922e93f6c6f471751ae97a1fd24a93aa4230e53ac91b8c37dab9b185

    SHA512

    b0fa0425dc462fa10a56fb28f36b84f3a0e6426922c1fd37e56c4406e713a00aef2bbc04024f06133d1f63960a97372feb32fd4ebf43105b9d9823f37820b4b6

  • memory/456-42-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/456-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/456-35-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/456-34-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/456-31-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/4036-14-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4036-18-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4036-15-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4036-6-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4036-13-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4192-12-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4192-28-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4192-23-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4192-16-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4192-5-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4972-17-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4972-22-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4972-11-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4972-7-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB