Analysis

  • max time kernel
    144s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    22-04-2024 11:31

General

  • Target

    1353d2318463be28ebcffe36398b90b873ee21e2bde3d03f929103729c4b95ea.exe

  • Size

    520KB

  • MD5

    ef53493176b714d7c8c972a756cfd806

  • SHA1

    c7c08850f9dd1706a2a2a5b456f5de2b25eb200c

  • SHA256

    1353d2318463be28ebcffe36398b90b873ee21e2bde3d03f929103729c4b95ea

  • SHA512

    eab8465a629001a43631724aaa9293c229286bebb33c943ce197ce5f17419b9b91c6f9be86c4dec68d4b099871abf3fa05807e99876ffa0ee3497f3a5abac2fa

  • SSDEEP

    12288:fnPdhsFldr2BFS3Cr3HUNdAfZBAfYKBuyhleDJB:vPdhoeBYSrHU7K9KBuRJB

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

209.90.234.20:2404

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-YDAEDG

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Remcos

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

  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 9 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1353d2318463be28ebcffe36398b90b873ee21e2bde3d03f929103729c4b95ea.exe
    "C:\Users\Admin\AppData\Local\Temp\1353d2318463be28ebcffe36398b90b873ee21e2bde3d03f929103729c4b95ea.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1964
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden ; $limpiness=Get-Content 'C:\Users\Admin\AppData\Roaming\Usitative\healthless\hovedanpartshaver\ravnemorens\Frsteinstanserne\Instantiations.Lil';$Sears=$limpiness.SubString(55857,3);.$Sears($limpiness)
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1900
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c "set /A 1^^0"
        3⤵
          PID:2004
        • C:\Program Files (x86)\windows mail\wab.exe
          "C:\Program Files (x86)\windows mail\wab.exe"
          3⤵
          • Suspicious use of NtCreateThreadExHideFromDebugger
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious use of SetThreadContext
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1140
          • C:\Program Files (x86)\windows mail\wab.exe
            "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\taepouqjoidgbwjnvsewmkkt"
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:1348
          • C:\Program Files (x86)\windows mail\wab.exe
            "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\dujhpmbdcqvllcfzmdryppxcagna"
            4⤵
            • Accesses Microsoft Outlook accounts
            PID:1252
          • C:\Program Files (x86)\windows mail\wab.exe
            "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\noosqfmeqznxoiudwnezacrtjvxbiyw"
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2896
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 1140 -s 832
            4⤵
            • Program crash
            PID:1652

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • C:\Users\Admin\AppData\Roaming\Usitative\healthless\hovedanpartshaver\Keglestubs\Konkursbegringer\Ceyloneseren\Tandkrusenes.Unm

      Filesize

      332KB

      MD5

      fdf7c7dcc4871871d8bc9302bd01c148

      SHA1

      9d1f26dfa0773d6ea821954992ae8d416d70d206

      SHA256

      d21e3ddf67c09b2192e823d2969d8f441023764d7d8e7554328aaa547c43604e

      SHA512

      a6abd1b3b367701b22fcfee8715820dac0a0783a847545b3774fbc263213ef3ecaf8bc5d3eaf58ba486e4f0bd2001344a23da962a5722eca5ca44c57a4615dee

    • C:\Users\Admin\AppData\Roaming\Usitative\healthless\hovedanpartshaver\ravnemorens\Frsteinstanserne\Instantiations.Lil

      Filesize

      54KB

      MD5

      63d0c546b30964e943c2ac8fd5e236db

      SHA1

      7d46713cb1d3cbfe25efcaf24369fb067d310920

      SHA256

      eb26aa5b4ec7a1c0c0ad2be344c02a23f770815a40e84e5b1b5fe24c9b64edda

      SHA512

      91399fec920e3be9526e1af39a632512c6c00cea3566a9ce43fdbadf813c5b2b830620bfc381747b195a4e2c52b8ef4d81295b484ea6ed925979a97b8cf6a1ed

    • C:\Users\Admin\Pictures\aflytningslov.lnk

      Filesize

      1KB

      MD5

      9333cf83096fddcdd9c3bf8c574b19cf

      SHA1

      f695064d6dcf0ac077f338edd50ef2ceb3e7292f

      SHA256

      d3075e8bb6e3d9351b6edcda6619f6fd4b4650b382fe2955575a1db97d891cc2

      SHA512

      9a23f79ae28c900888b78c352277a78c64355cdd7899f032dbc16f56813892e6e478b8da40feec1becd636b0ee58d5dd4a92ec15b916380db4f35a990901e94d

    • memory/1140-149-0x00000000775E0000-0x00000000776B6000-memory.dmp

      Filesize

      856KB

    • memory/1140-155-0x00000000775E0000-0x00000000776B6000-memory.dmp

      Filesize

      856KB

    • memory/1140-190-0x00000000009D0000-0x00000000009E9000-memory.dmp

      Filesize

      100KB

    • memory/1140-188-0x0000000000DE0000-0x0000000001E42000-memory.dmp

      Filesize

      16.4MB

    • memory/1140-193-0x00000000009D0000-0x00000000009E9000-memory.dmp

      Filesize

      100KB

    • memory/1140-150-0x0000000000DE0000-0x0000000001E42000-memory.dmp

      Filesize

      16.4MB

    • memory/1140-174-0x0000000001E50000-0x0000000004374000-memory.dmp

      Filesize

      37.1MB

    • memory/1140-194-0x00000000775E0000-0x00000000776B6000-memory.dmp

      Filesize

      856KB

    • memory/1140-148-0x0000000077616000-0x0000000077617000-memory.dmp

      Filesize

      4KB

    • memory/1140-146-0x00000000773F0000-0x0000000077599000-memory.dmp

      Filesize

      1.7MB

    • memory/1140-145-0x0000000001E50000-0x0000000004374000-memory.dmp

      Filesize

      37.1MB

    • memory/1252-170-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1252-165-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1252-189-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1252-178-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1252-172-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/1348-176-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1348-166-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1348-186-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1348-158-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1348-160-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1348-164-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1900-142-0x0000000073C70000-0x000000007421B000-memory.dmp

      Filesize

      5.7MB

    • memory/1900-141-0x00000000773F0000-0x0000000077599000-memory.dmp

      Filesize

      1.7MB

    • memory/1900-132-0x00000000029F0000-0x0000000002A30000-memory.dmp

      Filesize

      256KB

    • memory/1900-156-0x0000000006610000-0x0000000008B34000-memory.dmp

      Filesize

      37.1MB

    • memory/1900-131-0x0000000073C70000-0x000000007421B000-memory.dmp

      Filesize

      5.7MB

    • memory/1900-147-0x0000000006610000-0x0000000008B34000-memory.dmp

      Filesize

      37.1MB

    • memory/1900-144-0x00000000775E0000-0x00000000776B6000-memory.dmp

      Filesize

      856KB

    • memory/1900-133-0x00000000029F0000-0x0000000002A30000-memory.dmp

      Filesize

      256KB

    • memory/1900-143-0x00000000029F0000-0x0000000002A30000-memory.dmp

      Filesize

      256KB

    • memory/1900-136-0x00000000029F0000-0x0000000002A30000-memory.dmp

      Filesize

      256KB

    • memory/1900-138-0x0000000005520000-0x0000000005524000-memory.dmp

      Filesize

      16KB

    • memory/1900-140-0x0000000006610000-0x0000000008B34000-memory.dmp

      Filesize

      37.1MB

    • memory/1900-139-0x0000000006610000-0x0000000008B34000-memory.dmp

      Filesize

      37.1MB

    • memory/2896-180-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2896-175-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2896-179-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2896-177-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2896-171-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB