Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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 15 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 20 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:4920
    • 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:3092
      • 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:4032
        • C:\Program Files (x86)\windows mail\wab.exe
          "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\kqikt"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:4788
        • C:\Program Files (x86)\windows mail\wab.exe
          "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\mkvuuvnx"
          4⤵
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:4380
        • C:\Program Files (x86)\windows mail\wab.exe
          "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\xnbnunyzkpnc"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    a14782d0642ba9ac2973474b4a6f6e18

    SHA1

    023a60c3500ed82a3d0ebd399d3ba9dda6a749ad

    SHA256

    df1255c3806ac1145f167eeadb4e4c15a9e7eb920e7a230b9c9c27d7c8679f20

    SHA512

    5e35f6cdd559b26b2a41dd998cd1008be49d44bd8e16fe4fae46b70b233648628db4c37629a99646a5351ae9d369d1e3c3cfc09173629f26bd5ba9a7e76c36a8

  • 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\__PSScriptPolicyTest_v4lfgh1q.i4s.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    4KB

    MD5

    a7e181f6aa185be0ab0ca68b30406fe6

    SHA1

    58c86162658dc609615b8b6400f85c92506dfdc8

    SHA256

    c3071dc55b94db225d9c0f2c1b21c7e8f27dbfd168b85b7d618d8d19950e7ff2

    SHA512

    49969eb10e0bf7925940eb7374451f811658ef9ccfb83b86fb337c4d06c3ba17eb0181f598d9e0ec9ca25bfaf644209ac47b73d62ac924e73d03a4dcf8f8dd0f

  • memory/1992-62-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1992-63-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1992-60-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3092-27-0x0000000006900000-0x0000000006922000-memory.dmp

    Filesize

    136KB

  • memory/3092-12-0x0000000005CD0000-0x0000000005D36000-memory.dmp

    Filesize

    408KB

  • memory/3092-23-0x00000000063A0000-0x00000000063BE000-memory.dmp

    Filesize

    120KB

  • memory/3092-24-0x00000000063E0000-0x000000000642C000-memory.dmp

    Filesize

    304KB

  • memory/3092-25-0x0000000007380000-0x0000000007416000-memory.dmp

    Filesize

    600KB

  • memory/3092-26-0x00000000068B0000-0x00000000068CA000-memory.dmp

    Filesize

    104KB

  • memory/3092-5-0x000000007436E000-0x000000007436F000-memory.dmp

    Filesize

    4KB

  • memory/3092-28-0x00000000079D0000-0x0000000007F74000-memory.dmp

    Filesize

    5.6MB

  • memory/3092-11-0x0000000005C60000-0x0000000005CC6000-memory.dmp

    Filesize

    408KB

  • memory/3092-30-0x0000000008600000-0x0000000008C7A000-memory.dmp

    Filesize

    6.5MB

  • memory/3092-32-0x0000000074360000-0x0000000074B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3092-33-0x0000000074360000-0x0000000074B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3092-34-0x0000000074360000-0x0000000074B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3092-10-0x0000000005B60000-0x0000000005B82000-memory.dmp

    Filesize

    136KB

  • memory/3092-36-0x0000000074360000-0x0000000074B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3092-37-0x000000007436E000-0x000000007436F000-memory.dmp

    Filesize

    4KB

  • memory/3092-38-0x0000000008C80000-0x000000000DAF5000-memory.dmp

    Filesize

    78.5MB

  • memory/3092-39-0x0000000074360000-0x0000000074B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3092-40-0x0000000074360000-0x0000000074B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3092-41-0x0000000074360000-0x0000000074B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3092-43-0x0000000074360000-0x0000000074B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3092-6-0x0000000004D50000-0x0000000004D86000-memory.dmp

    Filesize

    216KB

  • memory/3092-44-0x0000000074360000-0x0000000074B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3092-7-0x0000000074360000-0x0000000074B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3092-8-0x00000000053F0000-0x0000000005A18000-memory.dmp

    Filesize

    6.2MB

  • memory/3092-18-0x0000000005D80000-0x00000000060D4000-memory.dmp

    Filesize

    3.3MB

  • memory/3092-9-0x0000000074360000-0x0000000074B10000-memory.dmp

    Filesize

    7.7MB

  • memory/3092-53-0x0000000074360000-0x0000000074B10000-memory.dmp

    Filesize

    7.7MB

  • memory/4032-48-0x0000000000400000-0x0000000001654000-memory.dmp

    Filesize

    18.3MB

  • memory/4032-71-0x00000000220A0000-0x00000000220B9000-memory.dmp

    Filesize

    100KB

  • memory/4032-104-0x0000000000400000-0x0000000001654000-memory.dmp

    Filesize

    18.3MB

  • memory/4032-54-0x0000000000400000-0x0000000001654000-memory.dmp

    Filesize

    18.3MB

  • memory/4032-101-0x0000000000400000-0x0000000001654000-memory.dmp

    Filesize

    18.3MB

  • memory/4032-98-0x0000000000400000-0x0000000001654000-memory.dmp

    Filesize

    18.3MB

  • memory/4032-49-0x0000000000400000-0x0000000001654000-memory.dmp

    Filesize

    18.3MB

  • memory/4032-47-0x0000000077DB1000-0x0000000077ED1000-memory.dmp

    Filesize

    1.1MB

  • memory/4032-86-0x0000000000400000-0x0000000001654000-memory.dmp

    Filesize

    18.3MB

  • memory/4032-83-0x0000000000400000-0x0000000001654000-memory.dmp

    Filesize

    18.3MB

  • memory/4032-46-0x0000000077E38000-0x0000000077E39000-memory.dmp

    Filesize

    4KB

  • memory/4032-45-0x0000000077DB1000-0x0000000077ED1000-memory.dmp

    Filesize

    1.1MB

  • memory/4032-75-0x00000000220A0000-0x00000000220B9000-memory.dmp

    Filesize

    100KB

  • memory/4032-74-0x00000000220A0000-0x00000000220B9000-memory.dmp

    Filesize

    100KB

  • memory/4032-77-0x0000000000400000-0x0000000001654000-memory.dmp

    Filesize

    18.3MB

  • memory/4032-80-0x0000000000400000-0x0000000001654000-memory.dmp

    Filesize

    18.3MB

  • memory/4380-58-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4380-59-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4380-65-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4788-61-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4788-64-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4788-57-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB