Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-04-2024 12:27

General

  • Target

    PURCHASE ORDER 794769-048.exe

  • Size

    892KB

  • MD5

    636a54861ddd167065f294cc76fca7ba

  • SHA1

    7e3eba28bc4b89801c91de5450aa28da5c6ff941

  • SHA256

    8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c

  • SHA512

    cde7be19fc7fa841d22521a6c5ad01129ff604b2f91c1c16e0da7d91434cd962af25a39c8ab43c14915536b47d652eb2e55cf0fab5178a9553ab0f8f74833fc4

  • SSDEEP

    24576:GgkHhAVqHxUrlWy05hMud6hHERSIhO0RDP+dB8:I2V+Ur6MIMHERSIQ0RDr

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

paygateme.net:2286

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-WTDTSU

  • screenshot_crypt

    true

  • 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.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 794769-048.exe
    "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 794769-048.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3008
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\tzRVJJzEigd.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4152
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tzRVJJzEigd" /XML "C:\Users\Admin\AppData\Local\Temp\tmp975E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2092
    • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 794769-048.exe
      "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 794769-048.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2640
      • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 794769-048.exe
        "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 794769-048.exe" /stext "C:\Users\Admin\AppData\Local\Temp\boymmquvwixxwovdduczuxbodnqss"
        3⤵
          PID:3788
        • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 794769-048.exe
          "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 794769-048.exe" /stext "C:\Users\Admin\AppData\Local\Temp\boymmquvwixxwovdduczuxbodnqss"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:736
        • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 794769-048.exe
          "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 794769-048.exe" /stext "C:\Users\Admin\AppData\Local\Temp\dqdxnjfprqpkzcjhmfpafbwfmtabloes"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:2884
        • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 794769-048.exe
          "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 794769-048.exe" /stext "C:\Users\Admin\AppData\Local\Temp\okiq"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4024

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat

      Filesize

      144B

      MD5

      ef68a9467b543e06060aea1f24f8b15b

      SHA1

      af597ac5995b43e33a763f51c872c962ae801ba6

      SHA256

      3e06f9a463d4d50f2b0847bb64c4b218c3bf051cb65f3078d35cb72fceea6180

      SHA512

      c3278734a19495771dea9458ae8ffe26a233d287daa0c1720dc9ce789386ffdf5ddc2485bfbb2b522e049d96aaf3a2523419ed3e95547d7ae7c73dda3d0eb45b

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ugc4hbvn.n2a.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

      Filesize

      4KB

      MD5

      fc8ceff5210efa58594c67ed8f49a824

      SHA1

      dba98c98becbdf81f623cdca6cd0a993022fe6cd

      SHA256

      778b7d5b90428961459c82e9881fe0fece78424d6301eb0720a96f100511f599

      SHA512

      c3b24fe5f5ba39174528ffc05544da6f22ac6aef2cac923ad139c0d044989873e004f9f5018cc0cc6847b5878f5aee96d6de823c860ac54a0fc67ff8d2d89cd1

    • C:\Users\Admin\AppData\Local\Temp\tmp975E.tmp

      Filesize

      1KB

      MD5

      12a5ad35edb56f116e733bbf7bff69c3

      SHA1

      2d0252206135b6d68f57ad05ccf3e2c915f6213e

      SHA256

      5ba0e8e7c4a1d36be777f87809ae601b15f902e723afc9cf00cb3bb71d3f8992

      SHA512

      0f9f932aff4b39a840e5cfed9ff4a3df0740db003d72a2e02cc1818db01c76a19cb590bf319374e7fc9ff9c476ebff7e5b691ffe8410ab95b5f90d337a624bda

    • memory/736-82-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/736-78-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/736-74-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/736-98-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/2640-124-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-113-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-142-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-101-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2640-141-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-134-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-133-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-19-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-21-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-125-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-23-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-105-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2640-26-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-28-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-25-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-29-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-31-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-104-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2640-117-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-106-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-116-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-43-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-53-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-51-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-107-0x0000000010000000-0x0000000010019000-memory.dmp

      Filesize

      100KB

    • memory/2640-48-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-49-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2640-50-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2884-93-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/2884-85-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/2884-81-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/2884-76-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/3008-4-0x00000000053C0000-0x00000000053D0000-memory.dmp

      Filesize

      64KB

    • memory/3008-2-0x0000000005AE0000-0x0000000006084000-memory.dmp

      Filesize

      5.6MB

    • memory/3008-5-0x0000000005500000-0x000000000550A000-memory.dmp

      Filesize

      40KB

    • memory/3008-8-0x0000000006BE0000-0x0000000006CA0000-memory.dmp

      Filesize

      768KB

    • memory/3008-9-0x0000000009280000-0x000000000931C000-memory.dmp

      Filesize

      624KB

    • memory/3008-6-0x0000000005AD0000-0x0000000005AE0000-memory.dmp

      Filesize

      64KB

    • memory/3008-1-0x0000000074660000-0x0000000074E10000-memory.dmp

      Filesize

      7.7MB

    • memory/3008-0-0x0000000000970000-0x0000000000A56000-memory.dmp

      Filesize

      920KB

    • memory/3008-3-0x0000000005430000-0x00000000054C2000-memory.dmp

      Filesize

      584KB

    • memory/3008-7-0x0000000006590000-0x000000000659C000-memory.dmp

      Filesize

      48KB

    • memory/3008-24-0x0000000074660000-0x0000000074E10000-memory.dmp

      Filesize

      7.7MB

    • memory/4024-79-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4024-86-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4024-92-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4024-94-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4152-55-0x0000000006550000-0x0000000006582000-memory.dmp

      Filesize

      200KB

    • memory/4152-73-0x0000000007490000-0x00000000074A1000-memory.dmp

      Filesize

      68KB

    • memory/4152-91-0x00000000074C0000-0x00000000074CE000-memory.dmp

      Filesize

      56KB

    • memory/4152-72-0x0000000007510000-0x00000000075A6000-memory.dmp

      Filesize

      600KB

    • memory/4152-71-0x0000000007300000-0x000000000730A000-memory.dmp

      Filesize

      40KB

    • memory/4152-95-0x00000000074D0000-0x00000000074E4000-memory.dmp

      Filesize

      80KB

    • memory/4152-96-0x00000000075D0000-0x00000000075EA000-memory.dmp

      Filesize

      104KB

    • memory/4152-69-0x0000000007290000-0x00000000072AA000-memory.dmp

      Filesize

      104KB

    • memory/4152-99-0x00000000075B0000-0x00000000075B8000-memory.dmp

      Filesize

      32KB

    • memory/4152-68-0x00000000078D0000-0x0000000007F4A000-memory.dmp

      Filesize

      6.5MB

    • memory/4152-67-0x0000000007180000-0x0000000007223000-memory.dmp

      Filesize

      652KB

    • memory/4152-66-0x0000000006510000-0x000000000652E000-memory.dmp

      Filesize

      120KB

    • memory/4152-56-0x0000000070840000-0x000000007088C000-memory.dmp

      Filesize

      304KB

    • memory/4152-54-0x0000000004AC0000-0x0000000004AD0000-memory.dmp

      Filesize

      64KB

    • memory/4152-47-0x0000000006370000-0x00000000063BC000-memory.dmp

      Filesize

      304KB

    • memory/4152-110-0x0000000074660000-0x0000000074E10000-memory.dmp

      Filesize

      7.7MB

    • memory/4152-46-0x0000000005F70000-0x0000000005F8E000-memory.dmp

      Filesize

      120KB

    • memory/4152-45-0x0000000005AF0000-0x0000000005E44000-memory.dmp

      Filesize

      3.3MB

    • memory/4152-38-0x0000000005980000-0x00000000059E6000-memory.dmp

      Filesize

      408KB

    • memory/4152-37-0x00000000058A0000-0x0000000005906000-memory.dmp

      Filesize

      408KB

    • memory/4152-30-0x00000000050A0000-0x00000000050C2000-memory.dmp

      Filesize

      136KB

    • memory/4152-18-0x0000000004AC0000-0x0000000004AD0000-memory.dmp

      Filesize

      64KB

    • memory/4152-20-0x0000000004AC0000-0x0000000004AD0000-memory.dmp

      Filesize

      64KB

    • memory/4152-17-0x0000000005100000-0x0000000005728000-memory.dmp

      Filesize

      6.2MB

    • memory/4152-16-0x0000000074660000-0x0000000074E10000-memory.dmp

      Filesize

      7.7MB

    • memory/4152-14-0x0000000004990000-0x00000000049C6000-memory.dmp

      Filesize

      216KB