Analysis

  • max time kernel
    119s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-07-2024 10:18

General

  • Target

    bc43851a4132b4bd01e72b3da4f97460N.exe

  • Size

    4.2MB

  • MD5

    bc43851a4132b4bd01e72b3da4f97460

  • SHA1

    73dde316598b208e1ed2e9d8d342744969090760

  • SHA256

    dc87017ebc4e4ca2d7f65e4d3ede241c3c1bd5908cf5fca24c3faadecce54705

  • SHA512

    b27db04034bbc4616e18ac42c3ae3cdbb3f993a785413c5d5dbe5c61b7e621e657d835ad7a31dbfc930474b114ac6720bf0ddee13bbfef62608dd546a138d091

  • SSDEEP

    24576:ocSRiKAoeMxDa6JtXtSGv7MOfmOh/epNPGi3XxV73LacYLNdK+UwqJ5ji5eB+VyR:

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

horsesnje.net:3343

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-TW2LKP

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 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 5 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bc43851a4132b4bd01e72b3da4f97460N.exe
    "C:\Users\Admin\AppData\Local\Temp\bc43851a4132b4bd01e72b3da4f97460N.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1252
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c timeout 21 & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3044
      • C:\Windows\SysWOW64\timeout.exe
        timeout 21
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4244
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc QQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEMAOgBcAFUAcwBlAHIAcwBcAEEAZABtAGkAbgBcAEEAcABwAEQAYQB0AGEAXABMAG8AYwBhAGwAXABUAGUAbQBwAFwAYgBjADQAMwA4ADUAMQBhADQAMQAzADIAYgA0AGIAZAAwADEAZQA3ADIAYgAzAGQAYQA0AGYAOQA3ADQANgAwAE4ALgBlAHgAZQA7ACAAQQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUAByAG8AYwBlAHMAcwAgAGIAYwA0ADMAOAA1ADEAYQA0ADEAMwAyAGIANABiAGQAMAAxAGUANwAyAGIAMwBkAGEANABmADkANwA0ADYAMABOAC4AZQB4AGUAOwA=
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4084
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:1944

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    fd6f666d727c5b9d1c53144f69eec87a

    SHA1

    8579f5123910173c607ee5297b0e535ef10f90fd

    SHA256

    aa1bd9a09f1af7e77f7d8f862f91f026aed0a9ca510d1e4f2db3d5693b0dcdeb

    SHA512

    a45e2f3032e9f71cf350e2d601b91bae4a111d31d664b6f8b9dda16cf1a9964f2ec6ae7a29318221d4155f04b92fa2369996bbebd35e8e29eddda0e2b4735bf3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4lfbpx2y.pmk.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1252-64-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-35-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-3-0x0000000074B90000-0x0000000075340000-memory.dmp

    Filesize

    7.7MB

  • memory/1252-4-0x0000000074B9E000-0x0000000074B9F000-memory.dmp

    Filesize

    4KB

  • memory/1252-5-0x0000000074B90000-0x0000000075340000-memory.dmp

    Filesize

    7.7MB

  • memory/1252-6-0x0000000006660000-0x00000000068D6000-memory.dmp

    Filesize

    2.5MB

  • memory/1252-7-0x0000000074B90000-0x0000000075340000-memory.dmp

    Filesize

    7.7MB

  • memory/1252-8-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-13-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-15-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-19-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-31-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-46-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-69-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-61-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-59-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-57-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-55-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-49-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-47-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-41-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-39-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-37-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-33-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-44-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-51-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-29-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-28-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-25-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-17-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-23-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-21-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-11-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-9-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-67-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-65-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-53-0x0000000006660000-0x00000000068D1000-memory.dmp

    Filesize

    2.4MB

  • memory/1252-2-0x0000000006C50000-0x0000000006E62000-memory.dmp

    Filesize

    2.1MB

  • memory/1252-0-0x0000000074B9E000-0x0000000074B9F000-memory.dmp

    Filesize

    4KB

  • memory/1252-4887-0x0000000074B90000-0x0000000075340000-memory.dmp

    Filesize

    7.7MB

  • memory/1252-4886-0x0000000074B90000-0x0000000075340000-memory.dmp

    Filesize

    7.7MB

  • memory/1252-4888-0x0000000006E70000-0x0000000006F0A000-memory.dmp

    Filesize

    616KB

  • memory/1252-4889-0x0000000005AB0000-0x0000000005AFC000-memory.dmp

    Filesize

    304KB

  • memory/1252-4937-0x0000000008640000-0x0000000008BE4000-memory.dmp

    Filesize

    5.6MB

  • memory/1252-4938-0x0000000006F50000-0x0000000006FA4000-memory.dmp

    Filesize

    336KB

  • memory/1252-4948-0x0000000074B90000-0x0000000075340000-memory.dmp

    Filesize

    7.7MB

  • memory/1252-1-0x0000000000AA0000-0x0000000000ED0000-memory.dmp

    Filesize

    4.2MB

  • memory/1944-4961-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1944-4947-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4084-4931-0x00000000073B0000-0x00000000073C4000-memory.dmp

    Filesize

    80KB

  • memory/4084-4893-0x0000000004E90000-0x0000000004EB2000-memory.dmp

    Filesize

    136KB

  • memory/4084-4894-0x0000000005580000-0x00000000055E6000-memory.dmp

    Filesize

    408KB

  • memory/4084-4895-0x00000000055F0000-0x0000000005656000-memory.dmp

    Filesize

    408KB

  • memory/4084-4896-0x0000000074B90000-0x0000000075340000-memory.dmp

    Filesize

    7.7MB

  • memory/4084-4902-0x0000000005840000-0x0000000005B94000-memory.dmp

    Filesize

    3.3MB

  • memory/4084-4907-0x0000000005E50000-0x0000000005E6E000-memory.dmp

    Filesize

    120KB

  • memory/4084-4908-0x0000000005E80000-0x0000000005ECC000-memory.dmp

    Filesize

    304KB

  • memory/4084-4909-0x0000000006E00000-0x0000000006E32000-memory.dmp

    Filesize

    200KB

  • memory/4084-4920-0x0000000074B90000-0x0000000075340000-memory.dmp

    Filesize

    7.7MB

  • memory/4084-4910-0x000000006FCF0000-0x000000006FD3C000-memory.dmp

    Filesize

    304KB

  • memory/4084-4921-0x0000000006420000-0x000000000643E000-memory.dmp

    Filesize

    120KB

  • memory/4084-4922-0x0000000074B90000-0x0000000075340000-memory.dmp

    Filesize

    7.7MB

  • memory/4084-4923-0x0000000007040000-0x00000000070E3000-memory.dmp

    Filesize

    652KB

  • memory/4084-4924-0x0000000074B90000-0x0000000075340000-memory.dmp

    Filesize

    7.7MB

  • memory/4084-4892-0x0000000004F50000-0x0000000005578000-memory.dmp

    Filesize

    6.2MB

  • memory/4084-4926-0x0000000007170000-0x000000000718A000-memory.dmp

    Filesize

    104KB

  • memory/4084-4927-0x00000000071E0000-0x00000000071EA000-memory.dmp

    Filesize

    40KB

  • memory/4084-4928-0x00000000073F0000-0x0000000007486000-memory.dmp

    Filesize

    600KB

  • memory/4084-4929-0x0000000007370000-0x0000000007381000-memory.dmp

    Filesize

    68KB

  • memory/4084-4930-0x00000000073A0000-0x00000000073AE000-memory.dmp

    Filesize

    56KB

  • memory/4084-4890-0x00000000048E0000-0x0000000004916000-memory.dmp

    Filesize

    216KB

  • memory/4084-4925-0x00000000077C0000-0x0000000007E3A000-memory.dmp

    Filesize

    6.5MB

  • memory/4084-4891-0x0000000074B90000-0x0000000075340000-memory.dmp

    Filesize

    7.7MB

  • memory/4084-4932-0x00000000074B0000-0x00000000074CA000-memory.dmp

    Filesize

    104KB

  • memory/4084-4933-0x0000000007490000-0x0000000007498000-memory.dmp

    Filesize

    32KB

  • memory/4084-4936-0x0000000074B90000-0x0000000075340000-memory.dmp

    Filesize

    7.7MB