Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/02/2024, 02:45

General

  • Target

    2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe

  • Size

    990KB

  • MD5

    ae507105cceba5aacb48465edc216829

  • SHA1

    3ce82cbc3bfe6ce6cc80548b3972fe50474ee58d

  • SHA256

    2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847

  • SHA512

    789fb309e65a1cff6b56ea1101aaa81739ab7a9ac4082aea12a6d4349cb2b18daf4b1417817e4425dadcd3171be7b4946f032ffe32ff5e5dc5497d6c8ae0e5bf

  • SSDEEP

    24576:5Xz87bPA2b+O0v7c+6ShVZ5II39pexAJSgEiYG77:5Xz87k/O0vAkhVZ63KMG7

Malware Config

Extracted

Family

remcos

Botnet

DESK

C2

198.27.121.194:2024

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-EQJXDT

  • 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) 22 IoCs
  • Detects executables built or packed with MPress PE compressor 18 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 2 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 2 IoCs
  • 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
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 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).

  • 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 30 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
    "C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2224
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\LCIBkTUxHQE.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:812
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LCIBkTUxHQE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3302.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:5036
    • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
      "C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe"
      2⤵
        PID:828
      • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
        "C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:2888
        • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
          C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\crlamlgsofkpocmywybiyktlzmgdknki"
          3⤵
            PID:4928
          • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
            C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\crlamlgsofkpocmywybiyktlzmgdknki"
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:3348
          • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
            C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\ntrtn"
            3⤵
            • Accesses Microsoft Outlook accounts
            PID:3648
          • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
            C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\xnwmnwbo"
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4912

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mbbdvbk2.k2r.ps1

              Filesize

              60B

              MD5

              d17fe0a3f47be24a6453e9ef58c94641

              SHA1

              6ab83620379fc69f80c0242105ddffd7d98d5d9d

              SHA256

              96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

              SHA512

              5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

              Filesize

              4KB

              MD5

              0cb17253d14f1f732dfbc3ef9b580d1e

              SHA1

              85d726cf68f14dd34090de9f4d160c0387249b68

              SHA256

              e09a0aed9bbc43da3b7a85d30a9a10b54d11c096aa6cef81c23364bc9c4dfcc9

              SHA512

              f651e62d58e83f9d5e21f3ac8cc516290bfff66c1981dc14cc3a7a900db70d6e7e15c99bb717a18c036b96a6c2f794c2351df7aa39b69531f2112860a51a86ee

            • C:\Users\Admin\AppData\Local\Temp\tmp3302.tmp

              Filesize

              1KB

              MD5

              2ec5cc456b3847876aa117ca19b5cd94

              SHA1

              20a32551734e66128f08881e6d832928da3797c0

              SHA256

              ee57353c8eacb42d985b43d5e2b907444c46c018f908a2b1240156eaafeea919

              SHA512

              63f59b9773ca190c02f89bfe632d9115a2a5689f6d7bcae0c72f911bff261e23cffa7c6b120a90d5dda69a6a1f573690dba033e63e076a9fc968d4993cb00fda

            • memory/812-46-0x0000000005CB0000-0x0000000005CFC000-memory.dmp

              Filesize

              304KB

            • memory/812-107-0x00000000071F0000-0x0000000007201000-memory.dmp

              Filesize

              68KB

            • memory/812-70-0x0000000006220000-0x000000000623E000-memory.dmp

              Filesize

              120KB

            • memory/812-60-0x0000000072EB0000-0x0000000072EFC000-memory.dmp

              Filesize

              304KB

            • memory/812-59-0x0000000006240000-0x0000000006272000-memory.dmp

              Filesize

              200KB

            • memory/812-58-0x000000007F2A0000-0x000000007F2B0000-memory.dmp

              Filesize

              64KB

            • memory/812-56-0x0000000002300000-0x0000000002310000-memory.dmp

              Filesize

              64KB

            • memory/812-84-0x0000000007640000-0x0000000007CBA000-memory.dmp

              Filesize

              6.5MB

            • memory/812-91-0x0000000006FF0000-0x000000000700A000-memory.dmp

              Filesize

              104KB

            • memory/812-94-0x0000000007070000-0x000000000707A000-memory.dmp

              Filesize

              40KB

            • memory/812-17-0x0000000002390000-0x00000000023C6000-memory.dmp

              Filesize

              216KB

            • memory/812-18-0x0000000074410000-0x0000000074BC0000-memory.dmp

              Filesize

              7.7MB

            • memory/812-19-0x0000000002300000-0x0000000002310000-memory.dmp

              Filesize

              64KB

            • memory/812-103-0x0000000007270000-0x0000000007306000-memory.dmp

              Filesize

              600KB

            • memory/812-21-0x0000000002300000-0x0000000002310000-memory.dmp

              Filesize

              64KB

            • memory/812-20-0x0000000004EF0000-0x0000000005518000-memory.dmp

              Filesize

              6.2MB

            • memory/812-115-0x0000000074410000-0x0000000074BC0000-memory.dmp

              Filesize

              7.7MB

            • memory/812-111-0x0000000007340000-0x000000000735A000-memory.dmp

              Filesize

              104KB

            • memory/812-25-0x0000000004EB0000-0x0000000004ED2000-memory.dmp

              Filesize

              136KB

            • memory/812-112-0x0000000007330000-0x0000000007338000-memory.dmp

              Filesize

              32KB

            • memory/812-105-0x0000000074410000-0x0000000074BC0000-memory.dmp

              Filesize

              7.7MB

            • memory/812-28-0x0000000005590000-0x00000000055F6000-memory.dmp

              Filesize

              408KB

            • memory/812-71-0x0000000006E70000-0x0000000006F13000-memory.dmp

              Filesize

              652KB

            • memory/812-45-0x0000000005C70000-0x0000000005C8E000-memory.dmp

              Filesize

              120KB

            • memory/812-40-0x0000000005600000-0x0000000005666000-memory.dmp

              Filesize

              408KB

            • memory/812-41-0x0000000005810000-0x0000000005B64000-memory.dmp

              Filesize

              3.3MB

            • memory/812-109-0x0000000002300000-0x0000000002310000-memory.dmp

              Filesize

              64KB

            • memory/812-110-0x0000000007250000-0x0000000007264000-memory.dmp

              Filesize

              80KB

            • memory/812-108-0x0000000007240000-0x000000000724E000-memory.dmp

              Filesize

              56KB

            • memory/2224-9-0x0000000008850000-0x000000000885E000-memory.dmp

              Filesize

              56KB

            • memory/2224-6-0x00000000084F0000-0x000000000858C000-memory.dmp

              Filesize

              624KB

            • memory/2224-35-0x0000000074410000-0x0000000074BC0000-memory.dmp

              Filesize

              7.7MB

            • memory/2224-4-0x0000000005980000-0x0000000005990000-memory.dmp

              Filesize

              64KB

            • memory/2224-3-0x0000000005A00000-0x0000000005A92000-memory.dmp

              Filesize

              584KB

            • memory/2224-2-0x0000000005FB0000-0x0000000006554000-memory.dmp

              Filesize

              5.6MB

            • memory/2224-10-0x00000000089B0000-0x0000000008A76000-memory.dmp

              Filesize

              792KB

            • memory/2224-11-0x0000000074410000-0x0000000074BC0000-memory.dmp

              Filesize

              7.7MB

            • memory/2224-0-0x0000000000EF0000-0x0000000000FEE000-memory.dmp

              Filesize

              1016KB

            • memory/2224-12-0x0000000005980000-0x0000000005990000-memory.dmp

              Filesize

              64KB

            • memory/2224-8-0x0000000008840000-0x000000000884A000-memory.dmp

              Filesize

              40KB

            • memory/2224-7-0x0000000008820000-0x0000000008834000-memory.dmp

              Filesize

              80KB

            • memory/2224-1-0x0000000074410000-0x0000000074BC0000-memory.dmp

              Filesize

              7.7MB

            • memory/2224-5-0x00000000059E0000-0x00000000059EA000-memory.dmp

              Filesize

              40KB

            • memory/2888-24-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-50-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-122-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-121-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-120-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-119-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-118-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-117-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-116-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-23-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-53-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-52-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-27-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-34-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-42-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-43-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-51-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-44-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-98-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/2888-47-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-101-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/2888-102-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/2888-49-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-48-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-104-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/2888-106-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/3348-72-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/3348-96-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/3348-75-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/3348-78-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/3348-77-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/3648-83-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/3648-82-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/3648-79-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/3648-92-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/3648-74-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/4912-85-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/4912-80-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/4912-90-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/4912-93-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB