Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    16-08-2024 08:52

General

  • Target

    PURCHASE ORDER 03.05.2024.PDF.exe

  • Size

    626KB

  • MD5

    9be2bb8f46192a7cf7006587c0e95d54

  • SHA1

    9e31f25cd0c0cf37a92a61ebd87293b519da5534

  • SHA256

    4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940

  • SHA512

    76140dd7bcfdb778b70c4864934016b9cbc60b4f36ece6aa671c6556f1504d38e3428102663c47ffa8346e2201078a28443a0b42be0c6b7e820f6823cab4810b

  • SSDEEP

    12288:naxvaBAHu5sn0ulSRNQeILTPNRLZi8s7exFe2WM:a9aBAObRNVI/PNxzxFMM

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

103.67.162.233:9462

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-GRR4WM

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • 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
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2660
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -windowstyle hidden "$Afmatningens=Get-Content 'C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Antipatheticalness\Anskaffet.Sys';$Unsucculent=$Afmatningens.SubString(619,3);.$Unsucculent($Afmatningens)"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2984
      • 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
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2820
        • C:\Program Files (x86)\windows mail\wab.exe
          "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\vhebmyzkzsqtneeexxuuqceslsqecgo"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:3000
        • C:\Program Files (x86)\windows mail\wab.exe
          "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\gckl"
          4⤵
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:448
        • C:\Program Files (x86)\windows mail\wab.exe
          "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\qepefjv"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:396

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    2509ac8b8be5fd0597902dea74c07fa0

    SHA1

    0df39329d15e5dd8fe55ef4fd8b62d1cc7d00a25

    SHA256

    76b4fe1b08957e615967282bc894b4d140f10710460dfa29b1076e26772209cd

    SHA512

    f7dc63b217655984f0bafa919e96d48baa16ed47d3f3557e0353667ca89b8dc03c3b8a2c11aa922c0dda0773c2b11ee83f5508128382b82e71e5c7762ad952ea

  • C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Antipatheticalness\Anskaffet.Sys

    Filesize

    52KB

    MD5

    d9a344e48210c5d555312be94347270a

    SHA1

    8e1957cb5f8e181411781bca9fa72f57e8d0d2b1

    SHA256

    e31954e86c5fadd5da5409be4c6266ac0740652f25073eb29f87d6727d0668b6

    SHA512

    ed1c9a1ce86f20c3eb860079067a7476b8e543c212b0fccd1e73183b6535dec74f34ece8b0225f10fd2f211af68bac6d7302c3b91e1a88d30285ad202854d853

  • C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Sacrificed.Guf

    Filesize

    310KB

    MD5

    e5923d356c8ca6e039eb3c12c3f8ce7a

    SHA1

    b920b2490fb5bbcefb281df27180eaa4f81825fc

    SHA256

    a3761e7a154e7defc78d9be7e003d327de84520afe5d8adc90074822ade75b65

    SHA512

    41af37685e04e272fe7b0b4e0dcb93b0ca6e33f930dc362ba82f93fa428ba0664ce06699c21ccb55a84c5e927d30415fe110cb6f35b1028d46f97d2f7ec95f4f

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

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • memory/396-39-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/396-40-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/396-38-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/448-34-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/448-36-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/448-32-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2820-52-0x00000000217A0000-0x00000000217B9000-memory.dmp

    Filesize

    100KB

  • memory/2820-60-0x0000000000C50000-0x0000000001CB2000-memory.dmp

    Filesize

    16.4MB

  • memory/2820-22-0x0000000000C50000-0x0000000001CB2000-memory.dmp

    Filesize

    16.4MB

  • memory/2820-26-0x0000000000C50000-0x0000000001CB2000-memory.dmp

    Filesize

    16.4MB

  • memory/2820-78-0x0000000000C50000-0x0000000001CB2000-memory.dmp

    Filesize

    16.4MB

  • memory/2820-75-0x0000000000C50000-0x0000000001CB2000-memory.dmp

    Filesize

    16.4MB

  • memory/2820-72-0x0000000000C50000-0x0000000001CB2000-memory.dmp

    Filesize

    16.4MB

  • memory/2820-69-0x0000000000C50000-0x0000000001CB2000-memory.dmp

    Filesize

    16.4MB

  • memory/2820-66-0x0000000000C50000-0x0000000001CB2000-memory.dmp

    Filesize

    16.4MB

  • memory/2820-63-0x0000000000C50000-0x0000000001CB2000-memory.dmp

    Filesize

    16.4MB

  • memory/2820-19-0x0000000000C50000-0x0000000001CB2000-memory.dmp

    Filesize

    16.4MB

  • memory/2820-57-0x0000000000C50000-0x0000000001CB2000-memory.dmp

    Filesize

    16.4MB

  • memory/2820-54-0x0000000000C50000-0x0000000001CB2000-memory.dmp

    Filesize

    16.4MB

  • memory/2820-51-0x00000000217A0000-0x00000000217B9000-memory.dmp

    Filesize

    100KB

  • memory/2820-48-0x00000000217A0000-0x00000000217B9000-memory.dmp

    Filesize

    100KB

  • memory/2820-46-0x0000000000C50000-0x0000000001CB2000-memory.dmp

    Filesize

    16.4MB

  • memory/2984-17-0x0000000006600000-0x000000000B475000-memory.dmp

    Filesize

    78.5MB

  • memory/2984-7-0x0000000074121000-0x0000000074122000-memory.dmp

    Filesize

    4KB

  • memory/2984-11-0x0000000074120000-0x00000000746CB000-memory.dmp

    Filesize

    5.7MB

  • memory/2984-9-0x0000000074120000-0x00000000746CB000-memory.dmp

    Filesize

    5.7MB

  • memory/2984-8-0x0000000074120000-0x00000000746CB000-memory.dmp

    Filesize

    5.7MB

  • memory/2984-10-0x0000000074120000-0x00000000746CB000-memory.dmp

    Filesize

    5.7MB

  • memory/2984-18-0x0000000074120000-0x00000000746CB000-memory.dmp

    Filesize

    5.7MB

  • memory/2984-14-0x0000000074120000-0x00000000746CB000-memory.dmp

    Filesize

    5.7MB

  • memory/2984-16-0x0000000074120000-0x00000000746CB000-memory.dmp

    Filesize

    5.7MB

  • memory/3000-33-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3000-35-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3000-30-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3000-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB