Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/03/2024, 09:49

General

  • Target
    Ranieri RFQ.exe
  • Size 1.0MB
  • Sample240301-lth73sfb7w
  • SHA256 e500b83db91a16021dc5f38a5cfacd4262a43c34bba5fa7211409e0ace06c85a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • iruka

C2
  • 91.223.3.151:4508

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-TG1HDZ

  • 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.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Drops startup file 1 IoCs
  • Executes dropped EXE 9 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 17 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • AutoIT Executable 6 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Ranieri RFQ.exe
    "C:\Users\Admin\AppData\Local\Temp\Ranieri RFQ.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1164
    • C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
      "C:\Users\Admin\AppData\Local\Temp\Ranieri RFQ.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3932
      • C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
        "C:\Users\Admin\AppData\Local\trickstress\palladiums.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:4700
        • C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
          "C:\Users\Admin\AppData\Local\trickstress\palladiums.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:2008
          • C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
            C:\Users\Admin\AppData\Local\trickstress\palladiums.exe /stext "C:\Users\Admin\AppData\Local\Temp\rzzbwizuuhwlpoajcqw"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            PID:3304
          • C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
            C:\Users\Admin\AppData\Local\trickstress\palladiums.exe /stext "C:\Users\Admin\AppData\Local\Temp\cbfmxakoipoqzcwvtbjhcn"
            5⤵
            • Executes dropped EXE
            PID:2156
          • C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
            C:\Users\Admin\AppData\Local\trickstress\palladiums.exe /stext "C:\Users\Admin\AppData\Local\Temp\cbfmxakoipoqzcwvtbjhcn"
            5⤵
            • Executes dropped EXE
            • Accesses Microsoft Outlook accounts
            PID:1384
          • C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
            C:\Users\Admin\AppData\Local\trickstress\palladiums.exe /stext "C:\Users\Admin\AppData\Local\Temp\evkeptvpwxgdcikzdlwifaghs"
            5⤵
            • Executes dropped EXE
            PID:2128
          • C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
            C:\Users\Admin\AppData\Local\trickstress\palladiums.exe /stext "C:\Users\Admin\AppData\Local\Temp\evkeptvpwxgdcikzdlwifaghs"
            5⤵
            • Executes dropped EXE
            PID:3572
          • C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
            C:\Users\Admin\AppData\Local\trickstress\palladiums.exe /stext "C:\Users\Admin\AppData\Local\Temp\evkeptvpwxgdcikzdlwifaghs"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4652

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        logs.dat

        • Path C:\ProgramData\remcos\logs.dat
        • Size 144B
        • SHA256 ab49fdacf8dcc725195009a44a9c375af4e24d1ebf87ef1f7f056f41fb2765c5
        • MD5 SHA1 SHA512

        Ramada

        • Path C:\Users\Admin\AppData\Local\Temp\Ramada
        • Size 483KB
        • SHA256 b2cf516356622c3f4a85fabd5a27fc588bf646d832aab729c505f234ce15ccdd
        • MD5 SHA1 SHA512 SSDEEP

        autDC95.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\autDC95.tmp
        • Size 421KB
        • SHA256 06569a83e21260aa20d1e9e5ec4013366442db60269162a7f7b9b234ec08ab60
        • MD5 SHA1 SHA512 SSDEEP

        autDCE4.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\autDCE4.tmp
        • Size 12KB
        • SHA256 2d6be8d662716da445c3ad2be0248e7044ac2de9fdf2e7d2a61e43185fa8c72b
        • MD5 SHA1 SHA512 SSDEEP

        isochronally

        • Path C:\Users\Admin\AppData\Local\Temp\isochronally
        • Size 96KB
        • SHA256 53e438771d06e2736f9e23bf2a9de8e5a350b276c650de355bdcae6deb3cd860
        • MD5 SHA1 SHA512 SSDEEP

        rzzbwizuuhwlpoajcqw

        • Path C:\Users\Admin\AppData\Local\Temp\rzzbwizuuhwlpoajcqw
        • Size 4KB
        • SHA256 2dbc369b0667f9cd7459735e998c13ffb3a06b91024e8d483f7776b292a9b627
        • MD5 SHA1 SHA512 SSDEEP

        palladiums.exe

        • Path C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
        • Size 6.6MB
        • SHA256 409535006d115a941313d96104123ee33f30d5ad64e6cdb3da98262b25fae974
        • MD5 SHA1 SHA512 SSDEEP

        palladiums.exe

        • Path C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
        • Size 6.6MB
        • SHA256 0fc80dd9276121629c56e78bd70c2fa36bd6259defd79dfa81518f38515b4d3b
        • MD5 SHA1 SHA512 SSDEEP

        palladiums.exe

        • Path C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
        • Size 10.0MB
        • SHA256 1354d2243e219eb3b317001af5fd7e30f51adb33f1a0c650f951455393878d51
        • MD5 SHA1 SHA512 SSDEEP

        palladiums.exe

        • Path C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
        • Size 1.2MB
        • SHA256 fca359053bb419d7a723137b9091320553ad470417423def520e0757fa543be8
        • MD5 SHA1 SHA512 SSDEEP

        palladiums.exe

        • Path C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
        • Size 768KB
        • SHA256 5250be655f40fa6ae1195860652f992b3ede9890361bdc7c83518ac093f8c376
        • MD5 SHA1 SHA512 SSDEEP

        palladiums.exe

        • Path C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
        • Size 2.3MB
        • SHA256 294bd43dba3229cdaa5a44eac946de5b6387f713817527d2623b62e05b2b66ca
        • MD5 SHA1 SHA512 SSDEEP

        palladiums.exe

        • Path C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
        • Size 1.5MB
        • SHA256 c12874dda37c07a6b025417697cda2bf5be24c8d7afb6380629cd42998940c8b
        • MD5 SHA1 SHA512 SSDEEP

        palladiums.exe

        • Path C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
        • Size 256KB
        • SHA256 635114a7268d4aae22d88483dd8af276ca47c2160d8f2e9cc9aca9081971f73c
        • MD5 SHA1 SHA512 SSDEEP

        palladiums.exe

        • Path C:\Users\Admin\AppData\Local\trickstress\palladiums.exe
        • Size 6.0MB
        • SHA256 36ee0227a401aa8c0ca4b4911b2b45085218c4ab1baadcb05137f2e7c9f00d83
        • MD5 SHA1 SHA512 SSDEEP

        memory/1164-15-0x0000000000580000-0x00000000007AD000-memory.dmp

        memory/1164-11-0x00000000016E0000-0x00000000016E4000-memory.dmp

        memory/1164-0-0x0000000000580000-0x00000000007AD000-memory.dmp

        memory/1384-99-0x0000000000400000-0x0000000000457000-memory.dmp

        memory/1384-90-0x0000000000400000-0x0000000000457000-memory.dmp

        memory/1384-95-0x0000000000400000-0x0000000000457000-memory.dmp

        memory/1384-82-0x0000000000400000-0x0000000000457000-memory.dmp

        memory/2008-74-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-65-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-72-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-73-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-70-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-69-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-146-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-68-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-67-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-71-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-145-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-109-0x0000000010000000-0x0000000010019000-memory.dmp

        memory/2008-63-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-61-0x0000000000C30000-0x0000000000E5D000-memory.dmp

        memory/2008-134-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-124-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-123-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-115-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-114-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-113-0x0000000010000000-0x0000000010019000-memory.dmp

        memory/2008-112-0x0000000000400000-0x0000000000482000-memory.dmp

        memory/2008-111-0x0000000010000000-0x0000000010019000-memory.dmp

        memory/2008-105-0x0000000010000000-0x0000000010019000-memory.dmp

        memory/3304-80-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/3304-103-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/3304-84-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/3304-77-0x0000000000400000-0x0000000000478000-memory.dmp

        memory/3932-30-0x0000000000C30000-0x0000000000E5D000-memory.dmp

        memory/3932-33-0x0000000000C30000-0x0000000000E5D000-memory.dmp

        memory/3932-16-0x0000000000C30000-0x0000000000E5D000-memory.dmp

        memory/4652-101-0x0000000000400000-0x0000000000424000-memory.dmp

        memory/4652-100-0x0000000000400000-0x0000000000424000-memory.dmp

        memory/4652-98-0x0000000000400000-0x0000000000424000-memory.dmp

        memory/4652-94-0x0000000000400000-0x0000000000424000-memory.dmp

        memory/4700-34-0x0000000000C30000-0x0000000000E5D000-memory.dmp

        memory/4700-48-0x0000000000C30000-0x0000000000E5D000-memory.dmp