Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-10-2022 15:00

General

  • Target

    PO_No._ANOP0658.exe

  • Size

    7KB

  • MD5

    bf66440c894e2c3691b58423deb5a96a

  • SHA1

    6a0d775b272c09dd4f7b1b3269d5497aa9e0bbc8

  • SHA256

    8af0a92b4f923ce464380fb0f5dc8203b4d00211b239e87d814ad44b620d63e7

  • SHA512

    989da9407ec44ccca4e3663746cecdb1fd1400cb66b486e4b56a69e6116589be8d1b317f4db5fb9e9c02b728f1d2e173c18ad6c8bd2539bfb8818f615e0db7f8

  • SSDEEP

    96:hM+yDs4I3dsoS3iJA9W2uavvDePHK5GIR6oP959xzNtR:hM+6sR2oS3lE2umbePHK5GIvbpX

Malware Config

Extracted

Family

remcos

Botnet

50005

C2

45.155.165.117:50005

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

    jubjutgwfkpjgsh-G1HYQL

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe
    "C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3272
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAyAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5024
    • C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe
      C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1316
      • C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe
        C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe /stext "C:\Users\Admin\AppData\Local\Temp\ngvtzelamwsljfgdkuqvljkjl"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:924
      • C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe
        C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe /stext "C:\Users\Admin\AppData\Local\Temp\qijeawvcaekxutchtfdxwvfsuile"
        3⤵
          PID:1288
        • C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe
          C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe /stext "C:\Users\Admin\AppData\Local\Temp\qijeawvcaekxutchtfdxwvfsuile"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:5008
        • C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe
          C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe /stext "C:\Users\Admin\AppData\Local\Temp\acoxbpgvomccwzqlkqxqzazjuxdngzv"
          3⤵
            PID:1456
          • C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe
            C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe /stext "C:\Users\Admin\AppData\Local\Temp\acoxbpgvomccwzqlkqxqzazjuxdngzv"
            3⤵
              PID:1648
            • C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe
              C:\Users\Admin\AppData\Local\Temp\PO_No._ANOP0658.exe /stext "C:\Users\Admin\AppData\Local\Temp\acoxbpgvomccwzqlkqxqzazjuxdngzv"
              3⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:1452

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Persistence

        Registry Run Keys / Startup Folder

        1
        T1060

        Defense Evasion

        Modify Registry

        1
        T1112

        Credential Access

        Credentials in Files

        1
        T1081

        Discovery

        Query Registry

        1
        T1012

        System Information Discovery

        2
        T1082

        Collection

        Data from Local System

        1
        T1005

        Email Collection

        1
        T1114

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          4KB

          MD5

          30177e1276595fd69ea96b692f49d776

          SHA1

          75769c29031ca1ad8e175dd700c74b5e35c5b0c7

          SHA256

          76d4066990e2ee2776f733a25ce23e9af545fd6f1a3b5760d603bdc05d9402d5

          SHA512

          ccdf20174d299de8ec21445faaf4ebe95c04bd7634c9fe138ba54262b754620c2dfd53a5c94b7d53518181d2eab7b5c97d7933d3a66d05220b06aee120893d4b

        • memory/924-157-0x0000000000400000-0x0000000000478000-memory.dmp
          Filesize

          480KB

        • memory/924-149-0x0000000000000000-mapping.dmp
        • memory/1288-150-0x0000000000000000-mapping.dmp
        • memory/1316-144-0x0000000000000000-mapping.dmp
        • memory/1316-146-0x0000000000400000-0x000000000047F000-memory.dmp
          Filesize

          508KB

        • memory/1316-148-0x0000000000400000-0x000000000047F000-memory.dmp
          Filesize

          508KB

        • memory/1316-147-0x0000000000400000-0x000000000047F000-memory.dmp
          Filesize

          508KB

        • memory/1316-159-0x0000000000400000-0x000000000047F000-memory.dmp
          Filesize

          508KB

        • memory/1316-145-0x0000000000400000-0x000000000047F000-memory.dmp
          Filesize

          508KB

        • memory/1452-155-0x0000000000000000-mapping.dmp
        • memory/1452-156-0x0000000000400000-0x0000000000424000-memory.dmp
          Filesize

          144KB

        • memory/1456-152-0x0000000000000000-mapping.dmp
        • memory/1648-153-0x0000000000000000-mapping.dmp
        • memory/3272-132-0x0000000000A50000-0x0000000000A58000-memory.dmp
          Filesize

          32KB

        • memory/3272-143-0x000000003EF60000-0x000000003F504000-memory.dmp
          Filesize

          5.6MB

        • memory/3272-142-0x0000000006880000-0x0000000006912000-memory.dmp
          Filesize

          584KB

        • memory/3272-133-0x00000000064A0000-0x00000000064C2000-memory.dmp
          Filesize

          136KB

        • memory/5008-154-0x0000000000400000-0x0000000000457000-memory.dmp
          Filesize

          348KB

        • memory/5008-151-0x0000000000000000-mapping.dmp
        • memory/5024-141-0x0000000006180000-0x000000000619A000-memory.dmp
          Filesize

          104KB

        • memory/5024-140-0x00000000072E0000-0x000000000795A000-memory.dmp
          Filesize

          6.5MB

        • memory/5024-139-0x0000000005C90000-0x0000000005CAE000-memory.dmp
          Filesize

          120KB

        • memory/5024-138-0x0000000005650000-0x00000000056B6000-memory.dmp
          Filesize

          408KB

        • memory/5024-137-0x0000000005530000-0x0000000005596000-memory.dmp
          Filesize

          408KB

        • memory/5024-136-0x0000000004D90000-0x00000000053B8000-memory.dmp
          Filesize

          6.2MB

        • memory/5024-135-0x00000000026D0000-0x0000000002706000-memory.dmp
          Filesize

          216KB

        • memory/5024-134-0x0000000000000000-mapping.dmp