Analysis

  • max time kernel
    149s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2024 09:40

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 8 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 40 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:2156
    • 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:2840
    • 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:2836
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ccmyYaHotsrmGF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC12.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      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"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:2636
      • 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\itmvoswktsttjmftxilbyv"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:1808
      • 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\lvaoplgdhalgtauxosxvbaono"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:836
      • 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\vpfyqdrfvidlvgqjydkwmnjepjsx"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:1424

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • C:\Users\Admin\AppData\Local\Temp\tmpC12.tmp

    Filesize

    1KB

    MD5

    5a4ec1c4b190d9e22eb341fd1e95043a

    SHA1

    1a9032b9feed6426a7fc56b6b54372972bf9824f

    SHA256

    796369692a9d1d1b580c204da6017345de6d628cabde417849492a35cd4877bf

    SHA512

    043a5348d8e6291f5827d951a0950959aade17002ae1f7d0b9ca0ffd6d8abd85bea481e7cb931ff4fef46ae38429a16c3641740a81b0feec8869e6fd99119035

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\9M5QD55DICD7WVXHGMGN.temp

    Filesize

    7KB

    MD5

    9b4a94e171a1a706068e1a67fcb40fa2

    SHA1

    4d07fb80dcb8be91a8a31aa70c636ba274530b57

    SHA256

    4d67556ed3819952111b68c5ca5b8d97ba7478fe84e31bbd252949c43d5ef573

    SHA512

    75408efd0286eea6a1fe2c109c3ddc60ccb9148df993c44ab09104d867cdb830126bb684979104d910a91e9bbafb3ebd6b56323d0f4bb8584c593aa52021ab1a

  • memory/836-50-0x0000000000400000-0x0000000000457000-memory.dmp

    Filesize

    348KB

  • memory/836-53-0x0000000000400000-0x0000000000457000-memory.dmp

    Filesize

    348KB

  • memory/836-51-0x0000000000400000-0x0000000000457000-memory.dmp

    Filesize

    348KB

  • memory/1424-58-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1424-57-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1424-55-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1808-52-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1808-56-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1808-47-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1808-48-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2156-4-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

    Filesize

    4KB

  • memory/2156-3-0x0000000000290000-0x00000000002A2000-memory.dmp

    Filesize

    72KB

  • memory/2156-0-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

    Filesize

    4KB

  • memory/2156-5-0x0000000074B80000-0x000000007526E000-memory.dmp

    Filesize

    6.9MB

  • memory/2156-6-0x0000000005240000-0x0000000005300000-memory.dmp

    Filesize

    768KB

  • memory/2156-2-0x0000000074B80000-0x000000007526E000-memory.dmp

    Filesize

    6.9MB

  • memory/2156-40-0x0000000074B80000-0x000000007526E000-memory.dmp

    Filesize

    6.9MB

  • memory/2156-1-0x0000000000960000-0x0000000000A5C000-memory.dmp

    Filesize

    1008KB

  • memory/2636-38-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2636-41-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-42-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-44-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-43-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-46-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-23-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-25-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-27-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-29-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-31-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-33-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-39-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-36-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-37-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-21-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-19-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-64-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-65-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-66-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-67-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-68-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-69-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2636-70-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB