Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    17-04-2024 12:49

General

  • Target

    da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92.exe

  • Size

    895KB

  • MD5

    dd172773aa5ec3bc31080bc31fce8a44

  • SHA1

    5522deb7d315339e0d2b0dd2becb6d501e0dff2b

  • SHA256

    da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92

  • SHA512

    37bd970e680cd5e380d5f6044272e37782bd18f0c165af25f8c59b31b9fd29636cd43c2b9cde6bcd154dae0ee33866f3f783bab23aec8472e5db958a0ddaa588

  • SSDEEP

    24576:UHrWUxQNBIndBEQ/13KSAvkSZ/UosqmTbIecoe:qrWUxQPOgrB8osqq8Zo

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
  • 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 7 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92.exe
    "C:\Users\Admin\AppData\Local\Temp\da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1664
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\kdkZYZHUWsaYyc.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2636
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kdkZYZHUWsaYyc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp498E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2528
    • C:\Users\Admin\AppData\Local\Temp\da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92.exe
      "C:\Users\Admin\AppData\Local\Temp\da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2432
      • C:\Users\Admin\AppData\Local\Temp\da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92.exe
        C:\Users\Admin\AppData\Local\Temp\da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92.exe /stext "C:\Users\Admin\AppData\Local\Temp\efym"
        3⤵
          PID:296
        • C:\Users\Admin\AppData\Local\Temp\da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92.exe
          C:\Users\Admin\AppData\Local\Temp\da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92.exe /stext "C:\Users\Admin\AppData\Local\Temp\efym"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1564
        • C:\Users\Admin\AppData\Local\Temp\da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92.exe
          C:\Users\Admin\AppData\Local\Temp\da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92.exe /stext "C:\Users\Admin\AppData\Local\Temp\oheepbh"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:1496
        • C:\Users\Admin\AppData\Local\Temp\da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92.exe
          C:\Users\Admin\AppData\Local\Temp\da86da7fc086aa8262222feed9f4cd4df4c4538e77d90a7c160b1c794f298b92.exe /stext "C:\Users\Admin\AppData\Local\Temp\zcjxptsyni"
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2168

    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

    System Information Discovery

    1
    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

      4c723a10ec88627ebb86bd71e02a352c

      SHA1

      b5b9b8aec3acf151d223af9c75509dd60f6a5381

      SHA256

      ca44b4c09c34dd90f08e0a879b5e9f0d73a815f5147e3ccc110b96ea961ee860

      SHA512

      b715a9252d1ced6418c9a1725fc63203e62f801c12c5d2c47e5eeed2c836e9346bbfd0f41767e8cd133d6193dd8a1c166def6cc217fe63c43ae81c592a3fce8d

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

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • C:\Users\Admin\AppData\Local\Temp\tmp498E.tmp
      Filesize

      1KB

      MD5

      77ffbc96b103cd338a11b5aeaac5988f

      SHA1

      2b254c8b68cb5454d4e0eab48711c882f51b9dec

      SHA256

      7def1b06e6cac7d66a83fde2aa0a56de1be638ed4c544a7bf87a2b285934ede4

      SHA512

      f30ac719796d463f2d61a838e8d7d79890dc8ae31de587a4a40d4287846d04578502bcf31476adbf8e1aba19405b83006d5580fe9156eabc6d2f835b27726b8d

    • memory/1496-69-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/1496-60-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/1496-66-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/1496-82-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/1564-59-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/1564-62-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/1564-55-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/1564-79-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/1664-5-0x0000000007C50000-0x0000000007D10000-memory.dmp
      Filesize

      768KB

    • memory/1664-0-0x00000000002C0000-0x00000000003A6000-memory.dmp
      Filesize

      920KB

    • memory/1664-4-0x0000000000610000-0x000000000061C000-memory.dmp
      Filesize

      48KB

    • memory/1664-3-0x00000000005B0000-0x00000000005C0000-memory.dmp
      Filesize

      64KB

    • memory/1664-2-0x0000000004640000-0x0000000004680000-memory.dmp
      Filesize

      256KB

    • memory/1664-1-0x00000000746D0000-0x0000000074DBE000-memory.dmp
      Filesize

      6.9MB

    • memory/1664-33-0x00000000746D0000-0x0000000074DBE000-memory.dmp
      Filesize

      6.9MB

    • memory/2168-72-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2168-73-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2168-71-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2168-74-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2168-67-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2432-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/2432-25-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-118-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-117-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-32-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-44-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-110-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-46-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-47-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-48-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-49-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-51-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-40-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-37-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-109-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-100-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-97-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/2432-31-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-29-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-42-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-23-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-21-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-19-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-17-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-15-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-14-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-83-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/2432-86-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/2432-87-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/2432-88-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/2432-90-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-91-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-92-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2432-13-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2636-36-0x00000000028A0000-0x00000000028E0000-memory.dmp
      Filesize

      256KB

    • memory/2636-34-0x000000006EAA0000-0x000000006F04B000-memory.dmp
      Filesize

      5.7MB

    • memory/2636-38-0x000000006EAA0000-0x000000006F04B000-memory.dmp
      Filesize

      5.7MB

    • memory/2636-45-0x000000006EAA0000-0x000000006F04B000-memory.dmp
      Filesize

      5.7MB

    • memory/2636-39-0x00000000028A0000-0x00000000028E0000-memory.dmp
      Filesize

      256KB

    • memory/2636-41-0x00000000028A0000-0x00000000028E0000-memory.dmp
      Filesize

      256KB