Analysis

  • max time kernel
    149s
  • 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 12:22

General

  • Target

    Purchase Order Specifications 2024.exe

  • Size

    891KB

  • MD5

    365611c6c550f6b4d41e017b7f658975

  • SHA1

    b31644d9fb613abfcb0bf7a801db77b4d7fd7ec9

  • SHA256

    f486a970c3228b346008eb169500d373560ea047084818b77357ba68bfa960af

  • SHA512

    6393bd06d1ea7faaccc85469f6b87aaab102064c8871f6ea8c33ea5434d822ddbd59157e50def89219ee0d3ebe09d34423dfc5d23f337b42a134422d71c3f721

  • SSDEEP

    24576:Ig5HJmx9NoiP7+J7v8Dlco1AtasmkDu13xXD7:1Jmx/7zYv8BJ4a1kq1R7

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 17 IoCs
  • Suspicious behavior: MapViewOfSection 3 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 Specifications 2024.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase Order Specifications 2024.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3356
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\FCsxaE.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3332
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FCsxaE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7E67.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1276
    • C:\Users\Admin\AppData\Local\Temp\Purchase Order Specifications 2024.exe
      "C:\Users\Admin\AppData\Local\Temp\Purchase Order Specifications 2024.exe"
      2⤵
        PID:3936
      • C:\Users\Admin\AppData\Local\Temp\Purchase Order Specifications 2024.exe
        "C:\Users\Admin\AppData\Local\Temp\Purchase Order Specifications 2024.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2012
        • C:\Users\Admin\AppData\Local\Temp\Purchase Order Specifications 2024.exe
          "C:\Users\Admin\AppData\Local\Temp\Purchase Order Specifications 2024.exe" /stext "C:\Users\Admin\AppData\Local\Temp\etgjp"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2336
        • C:\Users\Admin\AppData\Local\Temp\Purchase Order Specifications 2024.exe
          "C:\Users\Admin\AppData\Local\Temp\Purchase Order Specifications 2024.exe" /stext "C:\Users\Admin\AppData\Local\Temp\onuuqwev"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:3908
        • C:\Users\Admin\AppData\Local\Temp\Purchase Order Specifications 2024.exe
          "C:\Users\Admin\AppData\Local\Temp\Purchase Order Specifications 2024.exe" /stext "C:\Users\Admin\AppData\Local\Temp\qpznqpppknmy"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3032

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Scheduled Task/Job

    1
    T1053

    Persistence

    Scheduled Task/Job

    1
    T1053

    Privilege Escalation

    Scheduled Task/Job

    1
    T1053

    Credential Access

    Unsecured Credentials

    1
    T1552

    Credentials In Files

    1
    T1552.001

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Collection

    Data from Local System

    1
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat
      Filesize

      144B

      MD5

      6e42da04cb1bbc1a76beef268231badd

      SHA1

      c9506215c986a0c6a5caa20ae0231ef2fa98dcc8

      SHA256

      0cecdacccbb7f8468447deda2df8c2facdaabb6412fa2eea673a168f23505781

      SHA512

      36e96c1cc435bd708c8f66e91faaf254a06e7c648429c8ac4d3f3005e42b60ed435e9cd88b73cbbd37d65d5b7010e08c1ba86946de84d1cb854266296ea02329

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gax4mhpk.plx.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\etgjp
      Filesize

      4KB

      MD5

      f941b9bd168d89f2e86359d2f26d9dfd

      SHA1

      5974ff71bf85a7a297bc8b0dc86351099d711b8f

      SHA256

      d0704de64af994f35974f05a3e5698e51ef2c7a31b766a86d810e210a4ceb839

      SHA512

      ffa54ce016718e0693b0d05b3271a970beb44ae1681213e59cc9c8c98dca7b3755f57d5bb8b3e554d597de8c2775c5bc11d9f31bf3c8ee50785a4d8dd62f3164

    • C:\Users\Admin\AppData\Local\Temp\tmp7E67.tmp
      Filesize

      1KB

      MD5

      d4e25cf6e4ab6844c7741105ed620d97

      SHA1

      ae5a663b3770f4edabe35320b32e386e94c5ea5b

      SHA256

      a015e5ca017ea62ef1ef760459d140cd938ac9775272ec78de400952d94a8b99

      SHA512

      798a2d27d345fd130c2315fc5f1689fe449214272a108c00bf7d6aff098b04afdfc951cdf8221c5dfc0b833ba30d1896e98102a25e0b3f7a9a4690ba60a7ddaf

    • memory/2012-104-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/2012-71-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-125-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-142-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-117-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-134-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-113-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-111-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/2012-110-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-135-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-109-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/2012-107-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/2012-108-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/2012-21-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-22-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-24-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-67-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-27-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-118-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-126-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-38-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-30-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-143-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-68-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-26-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-31-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-44-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-72-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2012-74-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2336-89-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2336-83-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2336-94-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2336-102-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/3032-95-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/3032-87-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/3032-97-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/3032-91-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/3332-28-0x0000000005680000-0x00000000056A2000-memory.dmp
      Filesize

      136KB

    • memory/3332-16-0x0000000002530000-0x0000000002566000-memory.dmp
      Filesize

      216KB

    • memory/3332-65-0x00000000071B0000-0x00000000071CA000-memory.dmp
      Filesize

      104KB

    • memory/3332-64-0x0000000007800000-0x0000000007E7A000-memory.dmp
      Filesize

      6.5MB

    • memory/3332-69-0x0000000007430000-0x00000000074C6000-memory.dmp
      Filesize

      600KB

    • memory/3332-70-0x00000000073B0000-0x00000000073C1000-memory.dmp
      Filesize

      68KB

    • memory/3332-63-0x0000000007020000-0x00000000070C3000-memory.dmp
      Filesize

      652KB

    • memory/3332-62-0x00000000025A0000-0x00000000025B0000-memory.dmp
      Filesize

      64KB

    • memory/3332-61-0x00000000063B0000-0x00000000063CE000-memory.dmp
      Filesize

      120KB

    • memory/3332-75-0x00000000073E0000-0x00000000073EE000-memory.dmp
      Filesize

      56KB

    • memory/3332-76-0x00000000073F0000-0x0000000007404000-memory.dmp
      Filesize

      80KB

    • memory/3332-77-0x00000000074F0000-0x000000000750A000-memory.dmp
      Filesize

      104KB

    • memory/3332-78-0x00000000074D0000-0x00000000074D8000-memory.dmp
      Filesize

      32KB

    • memory/3332-81-0x00000000744F0000-0x0000000074CA0000-memory.dmp
      Filesize

      7.7MB

    • memory/3332-51-0x000000006FE70000-0x000000006FEBC000-memory.dmp
      Filesize

      304KB

    • memory/3332-66-0x0000000007230000-0x000000000723A000-memory.dmp
      Filesize

      40KB

    • memory/3332-50-0x00000000063F0000-0x0000000006422000-memory.dmp
      Filesize

      200KB

    • memory/3332-49-0x000000007F550000-0x000000007F560000-memory.dmp
      Filesize

      64KB

    • memory/3332-18-0x00000000744F0000-0x0000000074CA0000-memory.dmp
      Filesize

      7.7MB

    • memory/3332-20-0x0000000005010000-0x0000000005638000-memory.dmp
      Filesize

      6.2MB

    • memory/3332-48-0x0000000005EB0000-0x0000000005EFC000-memory.dmp
      Filesize

      304KB

    • memory/3332-19-0x00000000025A0000-0x00000000025B0000-memory.dmp
      Filesize

      64KB

    • memory/3332-47-0x0000000005E10000-0x0000000005E2E000-memory.dmp
      Filesize

      120KB

    • memory/3332-45-0x0000000005970000-0x0000000005CC4000-memory.dmp
      Filesize

      3.3MB

    • memory/3332-43-0x0000000005900000-0x0000000005966000-memory.dmp
      Filesize

      408KB

    • memory/3332-32-0x0000000005720000-0x0000000005786000-memory.dmp
      Filesize

      408KB

    • memory/3356-5-0x0000000005390000-0x000000000539A000-memory.dmp
      Filesize

      40KB

    • memory/3356-4-0x00000000054F0000-0x0000000005500000-memory.dmp
      Filesize

      64KB

    • memory/3356-9-0x00000000090F0000-0x000000000918C000-memory.dmp
      Filesize

      624KB

    • memory/3356-1-0x00000000744F0000-0x0000000074CA0000-memory.dmp
      Filesize

      7.7MB

    • memory/3356-8-0x0000000006A50000-0x0000000006B10000-memory.dmp
      Filesize

      768KB

    • memory/3356-25-0x00000000744F0000-0x0000000074CA0000-memory.dmp
      Filesize

      7.7MB

    • memory/3356-15-0x00000000054F0000-0x0000000005500000-memory.dmp
      Filesize

      64KB

    • memory/3356-7-0x0000000005670000-0x000000000567C000-memory.dmp
      Filesize

      48KB

    • memory/3356-2-0x0000000005790000-0x0000000005D34000-memory.dmp
      Filesize

      5.6MB

    • memory/3356-3-0x00000000052D0000-0x0000000005362000-memory.dmp
      Filesize

      584KB

    • memory/3356-14-0x00000000744F0000-0x0000000074CA0000-memory.dmp
      Filesize

      7.7MB

    • memory/3356-6-0x0000000005650000-0x0000000005660000-memory.dmp
      Filesize

      64KB

    • memory/3356-0-0x0000000000800000-0x00000000008E6000-memory.dmp
      Filesize

      920KB

    • memory/3908-85-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/3908-90-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/3908-96-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/3908-93-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB