Analysis

  • max time kernel
    159s
  • max time network
    165s
  • 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, 02:38

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) 19 IoCs
  • Detects executables built or packed with MPress PE compressor 19 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 3 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 3 IoCs
  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 8 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 32 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 30 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:3976
    • 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:3476
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LCIBkTUxHQE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD97E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3208
    • 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:2936
      • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
        C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\kjjdhbfgtm"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:4272
      • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
        C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\xfugjmbbddwnbyxhl"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3332
      • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
        C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\mdpwiuqipueiy"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:1600

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cbrj1zut.qtr.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

          Filesize

          4KB

          MD5

          320830fb2990210b35d02eb559f1b3f2

          SHA1

          fba985836640a92e69c58c643929b75f7635ee33

          SHA256

          155c37d976ae56d6d9d7bed09e2802dade565be58b8af769b1e815ceb044c318

          SHA512

          6e0536d68bc7f2c053a02879aaabeabb390913028f5986be4d2c3eee67db27f1c9bf1675e33ef28bad5afb7c542070cdae31b31a1493328dc6e36c23a78a9073

        • C:\Users\Admin\AppData\Local\Temp\tmpD97E.tmp

          Filesize

          1KB

          MD5

          1984edcc9514896e58df8e0cc53fa0b2

          SHA1

          a94aec702d3d1359abae3f3cf8b0dd1094c082b8

          SHA256

          cf458fbe163eb88e42a619a2009863d15439dab39ca4e5cf201a67d8ea922fa1

          SHA512

          70fa35622cea84c9d9fd1fbc6cd796416b3c1c3ecba2a92c1f778a2d7aec82f8e38444dc7d7282692f074ea9c0fac84361c880dc35e6932ac0db026bf28e8295

        • memory/1600-66-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/1600-75-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/1600-68-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/1600-60-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/1600-54-0x0000000000400000-0x0000000000457000-memory.dmp

          Filesize

          348KB

        • memory/2936-87-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2936-28-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-115-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-116-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-114-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-83-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2936-84-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2936-86-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-85-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2936-80-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2936-39-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-23-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-24-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-41-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-27-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-47-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-29-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-30-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-31-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-40-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-38-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-65-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-36-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2936-37-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/3332-61-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3332-74-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3332-67-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3332-62-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3332-56-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3476-22-0x0000000004FC0000-0x00000000055E8000-memory.dmp

          Filesize

          6.2MB

        • memory/3476-104-0x0000000007290000-0x000000000729A000-memory.dmp

          Filesize

          40KB

        • memory/3476-113-0x0000000074B00000-0x00000000752B0000-memory.dmp

          Filesize

          7.7MB

        • memory/3476-110-0x0000000007530000-0x0000000007538000-memory.dmp

          Filesize

          32KB

        • memory/3476-109-0x0000000007550000-0x000000000756A000-memory.dmp

          Filesize

          104KB

        • memory/3476-108-0x0000000007450000-0x0000000007464000-memory.dmp

          Filesize

          80KB

        • memory/3476-35-0x0000000005720000-0x0000000005A74000-memory.dmp

          Filesize

          3.3MB

        • memory/3476-107-0x0000000007440000-0x000000000744E000-memory.dmp

          Filesize

          56KB

        • memory/3476-34-0x00000000055F0000-0x0000000005656000-memory.dmp

          Filesize

          408KB

        • memory/3476-106-0x0000000007410000-0x0000000007421000-memory.dmp

          Filesize

          68KB

        • memory/3476-105-0x0000000007490000-0x0000000007526000-memory.dmp

          Filesize

          600KB

        • memory/3476-69-0x0000000005F70000-0x0000000005F8E000-memory.dmp

          Filesize

          120KB

        • memory/3476-70-0x0000000005FA0000-0x0000000005FEC000-memory.dmp

          Filesize

          304KB

        • memory/3476-33-0x0000000004F40000-0x0000000004FA6000-memory.dmp

          Filesize

          408KB

        • memory/3476-103-0x0000000007210000-0x000000000722A000-memory.dmp

          Filesize

          104KB

        • memory/3476-32-0x0000000004EA0000-0x0000000004EC2000-memory.dmp

          Filesize

          136KB

        • memory/3476-102-0x0000000007860000-0x0000000007EDA000-memory.dmp

          Filesize

          6.5MB

        • memory/3476-101-0x0000000006520000-0x00000000065C3000-memory.dmp

          Filesize

          652KB

        • memory/3476-100-0x00000000064B0000-0x00000000064CE000-memory.dmp

          Filesize

          120KB

        • memory/3476-78-0x0000000004980000-0x0000000004990000-memory.dmp

          Filesize

          64KB

        • memory/3476-88-0x000000007F960000-0x000000007F970000-memory.dmp

          Filesize

          64KB

        • memory/3476-20-0x0000000004980000-0x0000000004990000-memory.dmp

          Filesize

          64KB

        • memory/3476-19-0x0000000004980000-0x0000000004990000-memory.dmp

          Filesize

          64KB

        • memory/3476-89-0x00000000064D0000-0x0000000006502000-memory.dmp

          Filesize

          200KB

        • memory/3476-18-0x0000000074B00000-0x00000000752B0000-memory.dmp

          Filesize

          7.7MB

        • memory/3476-17-0x0000000002430000-0x0000000002466000-memory.dmp

          Filesize

          216KB

        • memory/3476-90-0x0000000070F40000-0x0000000070F8C000-memory.dmp

          Filesize

          304KB

        • memory/3976-4-0x0000000005AC0000-0x0000000005AD0000-memory.dmp

          Filesize

          64KB

        • memory/3976-10-0x0000000008990000-0x000000000899E000-memory.dmp

          Filesize

          56KB

        • memory/3976-8-0x0000000074B00000-0x00000000752B0000-memory.dmp

          Filesize

          7.7MB

        • memory/3976-9-0x0000000008770000-0x000000000877A000-memory.dmp

          Filesize

          40KB

        • memory/3976-26-0x0000000074B00000-0x00000000752B0000-memory.dmp

          Filesize

          7.7MB

        • memory/3976-2-0x0000000005F30000-0x00000000064D4000-memory.dmp

          Filesize

          5.6MB

        • memory/3976-3-0x0000000005890000-0x0000000005922000-memory.dmp

          Filesize

          584KB

        • memory/3976-7-0x00000000086D0000-0x00000000086E4000-memory.dmp

          Filesize

          80KB

        • memory/3976-0-0x0000000074B00000-0x00000000752B0000-memory.dmp

          Filesize

          7.7MB

        • memory/3976-1-0x0000000000DA0000-0x0000000000E9E000-memory.dmp

          Filesize

          1016KB

        • memory/3976-5-0x0000000005880000-0x000000000588A000-memory.dmp

          Filesize

          40KB

        • memory/3976-11-0x0000000008AA0000-0x0000000008B66000-memory.dmp

          Filesize

          792KB

        • memory/3976-12-0x0000000005AC0000-0x0000000005AD0000-memory.dmp

          Filesize

          64KB

        • memory/3976-6-0x00000000083A0000-0x000000000843C000-memory.dmp

          Filesize

          624KB

        • memory/4272-53-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/4272-58-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/4272-63-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/4272-77-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB