Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-05-2024 01:20

General

  • Target

    40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740.exe

  • Size

    985KB

  • MD5

    f5b954f0119303d3d0ef657666b75cb3

  • SHA1

    dbf749bf18d503c440a681863b6c84a80083de62

  • SHA256

    40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740

  • SHA512

    d7c140fb74a87670109ed116be731d9820978d322c69b85fb11c75455049fb975e9955ba2b5d549fbf1c077e3352fb7fb16190b3b1d3bc76de26f1727ededef3

  • SSDEEP

    24576:TSYMFniyyZ6Pqc2Duhz/s8dTGMjqLpHr:pMFnyZ82DuhzfCHdHr

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

alibabaforwader10.ddns.net:60247

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-AC7NKA

  • 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.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 15 IoCs
  • 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.

  • 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).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740.exe
    "C:\Users\Admin\AppData\Local\Temp\40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4548
    • 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\40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1468
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YbOWhnO.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3872
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YbOWhnO" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8F20.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:748
    • C:\Users\Admin\AppData\Local\Temp\40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740.exe
      "C:\Users\Admin\AppData\Local\Temp\40a32c20b9e9576ce7f8d4342ad24b9f9aa0805bdc43aa781bc3b2626287d740.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:4028

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    f6a402f225e1bc58108ddf2820344346

    SHA1

    ec2d4a30acd8444a10a5d503c00816173680e2b8

    SHA256

    328bccb471b87020abf600ca17d903dba0fa875ec087ee28c16560c8f782121a

    SHA512

    ccb6c96e87374a0b074840fb7b018947bc3960666ba004964d9ea93b449d5fd9f27dfd613002078a03d4e9bd4862f7dcc1bd6ddfe165b5b71d9ea4db4fc5b674

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    18KB

    MD5

    7fe0c9fc98a81bddc4d653b2d90ddb83

    SHA1

    3d1034dff06e62106ec2ff904e24d6e1f235434f

    SHA256

    2f24f043124177f1a043bb541687d1ca039f96c8bc9d79d81ce20a5c54d80884

    SHA512

    6e97e2b6eecf82c2de396f1609802f333353c0f5e153451e28ac757d29994e15566d8711954eaf41ced7e16cd53f685cdb288ab4226c0a98b1cf3b12d58f01f5

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wwgesfdq.qk0.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp8F20.tmp

    Filesize

    1KB

    MD5

    575419d1c948e04dbcdf941cfc98d729

    SHA1

    b862cd31f675a80e1be081f611210a8fb59e50ca

    SHA256

    583e6a022b162ce6de1b0a8355a79761c2258d6e47bd178054cf65bd40a0d73d

    SHA512

    07c13872f96c8e6babd8bc987de6a86d02fd2fdc229b972c24b10c704cb49d10e9762e99b6a905bea459fc019ca1d888cd183488c397b7ddd27fd35d6dd8245b

  • memory/1468-16-0x0000000004570000-0x00000000045A6000-memory.dmp

    Filesize

    216KB

  • memory/1468-59-0x0000000006C70000-0x0000000006CA2000-memory.dmp

    Filesize

    200KB

  • memory/1468-86-0x0000000006FD0000-0x0000000006FE1000-memory.dmp

    Filesize

    68KB

  • memory/1468-85-0x0000000007050000-0x00000000070E6000-memory.dmp

    Filesize

    600KB

  • memory/1468-84-0x0000000006E40000-0x0000000006E4A000-memory.dmp

    Filesize

    40KB

  • memory/1468-82-0x0000000007410000-0x0000000007A8A000-memory.dmp

    Filesize

    6.5MB

  • memory/1468-83-0x0000000006DD0000-0x0000000006DEA000-memory.dmp

    Filesize

    104KB

  • memory/1468-22-0x0000000005290000-0x00000000052B2000-memory.dmp

    Filesize

    136KB

  • memory/1468-18-0x0000000004C60000-0x0000000005288000-memory.dmp

    Filesize

    6.2MB

  • memory/1468-88-0x0000000007000000-0x000000000700E000-memory.dmp

    Filesize

    56KB

  • memory/1468-19-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/1468-20-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/1468-60-0x0000000073720000-0x000000007376C000-memory.dmp

    Filesize

    304KB

  • memory/1468-23-0x00000000053B0000-0x0000000005416000-memory.dmp

    Filesize

    408KB

  • memory/1468-24-0x00000000054D0000-0x0000000005536000-memory.dmp

    Filesize

    408KB

  • memory/1468-89-0x0000000007010000-0x0000000007024000-memory.dmp

    Filesize

    80KB

  • memory/1468-97-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/1468-79-0x0000000006070000-0x000000000608E000-memory.dmp

    Filesize

    120KB

  • memory/1468-38-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/1468-37-0x0000000005540000-0x0000000005894000-memory.dmp

    Filesize

    3.3MB

  • memory/3872-57-0x0000000005F90000-0x0000000005FAE000-memory.dmp

    Filesize

    120KB

  • memory/3872-98-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/3872-91-0x00000000075D0000-0x00000000075D8000-memory.dmp

    Filesize

    32KB

  • memory/3872-90-0x00000000075F0000-0x000000000760A000-memory.dmp

    Filesize

    104KB

  • memory/3872-87-0x00000000074E0000-0x00000000074EE000-memory.dmp

    Filesize

    56KB

  • memory/3872-25-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/3872-21-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/3872-66-0x0000000073720000-0x000000007376C000-memory.dmp

    Filesize

    304KB

  • memory/3872-81-0x00000000071C0000-0x0000000007263000-memory.dmp

    Filesize

    652KB

  • memory/3872-58-0x00000000064C0000-0x000000000650C000-memory.dmp

    Filesize

    304KB

  • memory/3872-44-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/4028-122-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4028-116-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4028-49-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4028-130-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4028-128-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4028-123-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4028-56-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4028-117-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4028-48-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4028-110-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4028-51-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4028-109-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4028-104-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4028-54-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4028-103-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4548-8-0x0000000006B00000-0x0000000006B16000-memory.dmp

    Filesize

    88KB

  • memory/4548-2-0x0000000005D30000-0x00000000062D4000-memory.dmp

    Filesize

    5.6MB

  • memory/4548-3-0x0000000005820000-0x00000000058B2000-memory.dmp

    Filesize

    584KB

  • memory/4548-4-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/4548-55-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB

  • memory/4548-1-0x0000000000CB0000-0x0000000000DAC000-memory.dmp

    Filesize

    1008KB

  • memory/4548-5-0x00000000057B0000-0x00000000057BA000-memory.dmp

    Filesize

    40KB

  • memory/4548-6-0x00000000084B0000-0x00000000084D0000-memory.dmp

    Filesize

    128KB

  • memory/4548-7-0x0000000006AF0000-0x0000000006B00000-memory.dmp

    Filesize

    64KB

  • memory/4548-0-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

    Filesize

    4KB

  • memory/4548-9-0x0000000008630000-0x00000000086F0000-memory.dmp

    Filesize

    768KB

  • memory/4548-10-0x000000000AD60000-0x000000000ADFC000-memory.dmp

    Filesize

    624KB

  • memory/4548-11-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

    Filesize

    4KB

  • memory/4548-17-0x0000000074C50000-0x0000000075400000-memory.dmp

    Filesize

    7.7MB