Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2024 09:30

General

  • Target

    Payment Advice_Chase Bank.pdf.exe

  • Size

    997KB

  • MD5

    e9abe92824035cd098547ef4e5b55b66

  • SHA1

    627f264d13e0e0b7bdc3fccde16e1ef295605bce

  • SHA256

    b068030645860377782553a0afc3375824b11c827120888c3792b794de864232

  • SHA512

    ec1229a55357071954f1f935515d0a2b0b260d2be1c33a37e22b1ba0f962dd99d65d5a5b1f5b3c3fcbccb6757bd668ad1567b9b6cc05388871ebd268024490f0

  • SSDEEP

    12288:253wtfRzxWWoG2eNY27HpUe/dhWIp6JVbTp4vfpAtk5FabwLYGwD3Mcg34La+FYK:25MpzxWJRar/dkIIVbTpst2wT68j34Go

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

204.10.160.239:9682

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-6D4L9S

  • 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.

  • Remcos family
  • 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 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment Advice_Chase Bank.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment Advice_Chase Bank.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2580
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Payment Advice_Chase Bank.pdf.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1364
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ccmyYaHotsrmGF.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2916
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ccmyYaHotsrmGF" /XML "C:\Users\Admin\AppData\Local\Temp\tmp13B0.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2936
    • C:\Users\Admin\AppData\Local\Temp\Payment Advice_Chase Bank.pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Payment Advice_Chase Bank.pdf.exe"
      2⤵
        PID:2300
      • C:\Users\Admin\AppData\Local\Temp\Payment Advice_Chase Bank.pdf.exe
        "C:\Users\Admin\AppData\Local\Temp\Payment Advice_Chase Bank.pdf.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:2708
        • C:\Users\Admin\AppData\Local\Temp\Payment Advice_Chase Bank.pdf.exe
          "C:\Users\Admin\AppData\Local\Temp\Payment Advice_Chase Bank.pdf.exe" /stext "C:\Users\Admin\AppData\Local\Temp\kirqdfl"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:1184
        • C:\Users\Admin\AppData\Local\Temp\Payment Advice_Chase Bank.pdf.exe
          "C:\Users\Admin\AppData\Local\Temp\Payment Advice_Chase Bank.pdf.exe" /stext "C:\Users\Admin\AppData\Local\Temp\vkwbdpwvkdx"
          3⤵
          • Accesses Microsoft Outlook accounts
          • System Location Discovery: System Language Discovery
          PID:1380
        • C:\Users\Admin\AppData\Local\Temp\Payment Advice_Chase Bank.pdf.exe
          "C:\Users\Admin\AppData\Local\Temp\Payment Advice_Chase Bank.pdf.exe" /stext "C:\Users\Admin\AppData\Local\Temp\ffkteigpympuvi"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:2644

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • C:\Users\Admin\AppData\Local\Temp\tmp13B0.tmp

      Filesize

      1KB

      MD5

      6745f89b8694f9d86b964d5ede25ca4b

      SHA1

      bceb7048b751bfe95f1a0f44fa4d62a2d50d95e8

      SHA256

      a03c463ed3c71239a01f9497915709bbcbf0e5e54baa2da72123ec3bc52ea2cb

      SHA512

      b3d16bb7ea0fc5d1202429a78e438dc4f957a8e30a88c76dd26a56bfddb5777a438329b2f14863970b1adc11830d268c72d06cc7916159f7bf8fb527e25fd450

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

      Filesize

      7KB

      MD5

      818b902f0fde64c7c39ab2c763d722bb

      SHA1

      2c51eba2ddfb3bdad3618b6616e630386d4cdd07

      SHA256

      2785f2d712593f7bee95cccd681623fc6aa582adf40b6a2b84196e8a51001ffe

      SHA512

      7bb967a306ad8fb585f916c90877231531de8204e9373f189f7caa75d26256b36ca4bb36465d65048cac1f0531736a230b2ee1d42037fbabec8feab27932c69b

    • memory/1184-54-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1184-48-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1184-47-0x0000000000400000-0x0000000000478000-memory.dmp

      Filesize

      480KB

    • memory/1380-51-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/1380-57-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/1380-50-0x0000000000400000-0x0000000000457000-memory.dmp

      Filesize

      348KB

    • memory/2580-5-0x0000000005120000-0x00000000051E0000-memory.dmp

      Filesize

      768KB

    • memory/2580-4-0x0000000074B30000-0x000000007521E000-memory.dmp

      Filesize

      6.9MB

    • memory/2580-3-0x00000000004E0000-0x00000000004F2000-memory.dmp

      Filesize

      72KB

    • memory/2580-2-0x0000000074B30000-0x000000007521E000-memory.dmp

      Filesize

      6.9MB

    • memory/2580-0-0x0000000074B3E000-0x0000000074B3F000-memory.dmp

      Filesize

      4KB

    • memory/2580-39-0x0000000074B30000-0x000000007521E000-memory.dmp

      Filesize

      6.9MB

    • memory/2580-1-0x0000000000D80000-0x0000000000E7C000-memory.dmp

      Filesize

      1008KB

    • memory/2644-53-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2644-55-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2644-56-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/2708-37-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-35-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-18-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-41-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-40-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-43-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-42-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-45-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-20-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-22-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-26-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-28-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-32-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2708-36-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-38-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-31-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-24-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-63-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-64-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-65-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-66-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-67-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-68-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-69-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-71-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/2708-70-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB