Analysis

  • max time kernel
    146s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    22-04-2024 11:32

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:1656
    • 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:1684
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c "set /A 1^^0"
        3⤵
          PID:2208
        • 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:1320
          • C:\Program Files (x86)\windows mail\wab.exe
            "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\cjsdziqvlj"
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:656
          • C:\Program Files (x86)\windows mail\wab.exe
            "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\mmfnraaxzrerl"
            4⤵
            • Accesses Microsoft Outlook accounts
            PID:3036
          • C:\Program Files (x86)\windows mail\wab.exe
            "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\xglgstlqnzwwvytwm"
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:412
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 1320 -s 892
            4⤵
            • Program crash
            PID:1716

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      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

      3a644ae8724d5106d5fa8931cf1383bc

      SHA1

      f6324df23735d41fc4e674e10a4fb20c97261bae

      SHA256

      d84bf8252836cc5789861fc363690702a6df6ebd6818d76ab3c546976a3b2da6

      SHA512

      9b698a447cdb44224d12a96f219d924a51b95d92fef841f367f651b943fd2b9a811cc8108af2d790fc86de995c603dab9a2db3c584b364bde51d4c07f62e815a

    • memory/412-181-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/412-182-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/412-183-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/412-180-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/412-175-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/656-188-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/656-167-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/656-170-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/656-169-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/656-163-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/656-161-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1320-159-0x0000000001B10000-0x0000000004034000-memory.dmp

      Filesize

      37.1MB

    • memory/1320-147-0x00000000770C0000-0x0000000077269000-memory.dmp

      Filesize

      1.7MB

    • memory/1320-198-0x0000000000AA0000-0x0000000001B02000-memory.dmp

      Filesize

      16.4MB

    • memory/1320-149-0x00000000772B0000-0x0000000077386000-memory.dmp

      Filesize

      856KB

    • memory/1320-150-0x00000000772E6000-0x00000000772E7000-memory.dmp

      Filesize

      4KB

    • memory/1320-151-0x0000000000AA0000-0x0000000001B02000-memory.dmp

      Filesize

      16.4MB

    • memory/1320-152-0x0000000000AA0000-0x0000000001B02000-memory.dmp

      Filesize

      16.4MB

    • memory/1320-156-0x00000000772B0000-0x0000000077386000-memory.dmp

      Filesize

      856KB

    • memory/1320-197-0x0000000000970000-0x0000000000989000-memory.dmp

      Filesize

      100KB

    • memory/1320-146-0x0000000001B10000-0x0000000004034000-memory.dmp

      Filesize

      37.1MB

    • memory/1320-194-0x0000000000970000-0x0000000000989000-memory.dmp

      Filesize

      100KB

    • memory/1320-191-0x00000000772B0000-0x0000000077386000-memory.dmp

      Filesize

      856KB

    • memory/1320-190-0x0000000000AA0000-0x0000000001B02000-memory.dmp

      Filesize

      16.4MB

    • memory/1320-177-0x00000000770C0000-0x0000000077269000-memory.dmp

      Filesize

      1.7MB

    • memory/1684-141-0x0000000006990000-0x0000000008EB4000-memory.dmp

      Filesize

      37.1MB

    • memory/1684-137-0x0000000002AE0000-0x0000000002B20000-memory.dmp

      Filesize

      256KB

    • memory/1684-142-0x00000000770C0000-0x0000000077269000-memory.dmp

      Filesize

      1.7MB

    • memory/1684-148-0x0000000006990000-0x0000000008EB4000-memory.dmp

      Filesize

      37.1MB

    • memory/1684-157-0x0000000006990000-0x0000000008EB4000-memory.dmp

      Filesize

      37.1MB

    • memory/1684-143-0x0000000073940000-0x0000000073EEB000-memory.dmp

      Filesize

      5.7MB

    • memory/1684-140-0x0000000006990000-0x0000000008EB4000-memory.dmp

      Filesize

      37.1MB

    • memory/1684-139-0x0000000002CE0000-0x0000000002CE4000-memory.dmp

      Filesize

      16KB

    • memory/1684-145-0x0000000002AE0000-0x0000000002B20000-memory.dmp

      Filesize

      256KB

    • memory/1684-144-0x00000000772B0000-0x0000000077386000-memory.dmp

      Filesize

      856KB

    • memory/1684-133-0x0000000073940000-0x0000000073EEB000-memory.dmp

      Filesize

      5.7MB

    • memory/1684-134-0x0000000002AE0000-0x0000000002B20000-memory.dmp

      Filesize

      256KB

    • memory/1684-132-0x0000000002AE0000-0x0000000002B20000-memory.dmp

      Filesize

      256KB

    • memory/1684-131-0x0000000073940000-0x0000000073EEB000-memory.dmp

      Filesize

      5.7MB

    • memory/3036-164-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/3036-176-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/3036-193-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/3036-179-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/3036-168-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB

    • memory/3036-174-0x0000000000400000-0x0000000000462000-memory.dmp

      Filesize

      392KB