Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-07-2024 12:54

General

  • Target

    f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe

  • Size

    1.1MB

  • MD5

    28f77c9af8cb3ea886714bbfc8326635

  • SHA1

    f6f02b22cd5a272c71a5afa66efd3b237fe4f24f

  • SHA256

    f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35

  • SHA512

    03508e0f3f68696f4f7b64aa737d40e8bd24b69ea7860a8fabee997d238454929605fe5b1ea0880af14cf3a89763d46e1fdeb9a526700d570b0d672330b5f82d

  • SSDEEP

    24576:VcNkX126Z/zxDzTVt8Pyt1KjrJonp0+M+gw/gvXIw/qbw4:NX126zxvxt8P0IepJM+Tzk4

Malware Config

Extracted

Family

remcos

Botnet

sPITTT

C2

antfly50.sytes.net:1980

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-BW3KDF

  • 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 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 3 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.

  • 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).

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe
    "C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2368
    • 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\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4004
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\znlzneAxBVd.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1492
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\znlzneAxBVd" /XML "C:\Users\Admin\AppData\Local\Temp\tmp89F0.tmp"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:1480
    • C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe
      "C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3536
      • C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe
        C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe /stext "C:\Users\Admin\AppData\Local\Temp\knoqidcnmalcoclquqtaurkvifnldr"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2760
      • C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe
        C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe /stext "C:\Users\Admin\AppData\Local\Temp\uhtiivmhaiepzihcebobfwemqtfuwcvcv"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:1044
      • C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe
        C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe /stext "C:\Users\Admin\AppData\Local\Temp\fkztj"
        3⤵
          PID:1628
        • C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe
          C:\Users\Admin\AppData\Local\Temp\f251fe71103ef7bc4cbdbcfe9c1d7c4a595f831e51cf4064f2bfa595f47bda35.exe /stext "C:\Users\Admin\AppData\Local\Temp\fkztj"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2692

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Command and Scripting Interpreter

    1
    T1059

    PowerShell

    1
    T1059.001

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Persistence

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Privilege Escalation

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Credential Access

    Unsecured Credentials

    1
    T1552

    Credentials In Files

    1
    T1552.001

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Collection

    Data from Local System

    1
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat
      Filesize

      144B

      MD5

      702b0a1c83f45b929b084f3402d594e2

      SHA1

      0d1a748132169c7da9ba52e2437857dd2d883e34

      SHA256

      f6539e247dc8d5db9a7436cc8bfd94760232c818d99c24874cb65b6cdcf6d5ea

      SHA512

      3dd3ee9ffa575b233b276de0a56c9f8cf5d6219c45a4951df4fd6d237a511dc76cb77c1e68d9ec27866754ea17b42cd362b5b8c3b4f317d6d55450d75a4fd28c

    • 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

      cf10d08c4843fda65ba5ea820eaa9d14

      SHA1

      dfdc6691136ba4bd98188caba40737f9bf79bbb8

      SHA256

      042ad5e9a998b00abd62700317e803e67d8ca3453be4d9bfa4cbbf70eef1901a

      SHA512

      264dea4ae8e09199a3fe9589f35c065ff2526dd19f6a41777f473acfb5e7fb0a2bdc1f4e52598851083368c038b7bcda0deb35604fbfb953fc918862f781c10c

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dmpgfcyt.fiu.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\knoqidcnmalcoclquqtaurkvifnldr
      Filesize

      4KB

      MD5

      9c0e2939e93726f02c6d63773936b035

      SHA1

      98538d412084fdec0e31adbc57ccc1d1cbd6ba5b

      SHA256

      55d03b2840cdb4e449d9eebf11828e9220045eb181084c67f71669e5c4221707

      SHA512

      af500eef5d7de38bae6ce75099e7618260dfabba686cc9918064436771b95955a28f208e164cd9c1630b38467bf6f8f3de7173dfd1593a62ec5f500efbe26cb8

    • C:\Users\Admin\AppData\Local\Temp\tmp89F0.tmp
      Filesize

      1KB

      MD5

      b2843e2cf6c48890a8dc8aefe7ea301e

      SHA1

      b7f106d1a8fbc14bb3643b409018015fd412d1b6

      SHA256

      3d451299fe1159cebfd5e2cdc502d6ba7d54b310430822f76a40b6d31ec8d9d2

      SHA512

      87603a9252ec41abd54ea4552f23b84f1df33c17638621ba4310f4837106eced9c0229bc615b19cca9cd3033e71bb02986ff92ee888d99ba337b092a50991aea

    • memory/1044-108-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/1044-111-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/1044-110-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/1492-29-0x00000000751C0000-0x0000000075970000-memory.dmp
      Filesize

      7.7MB

    • memory/1492-22-0x00000000751C0000-0x0000000075970000-memory.dmp
      Filesize

      7.7MB

    • memory/1492-78-0x0000000075A70000-0x0000000075ABC000-memory.dmp
      Filesize

      304KB

    • memory/1492-100-0x00000000751C0000-0x0000000075970000-memory.dmp
      Filesize

      7.7MB

    • memory/1492-44-0x00000000751C0000-0x0000000075970000-memory.dmp
      Filesize

      7.7MB

    • memory/2368-9-0x0000000006220000-0x00000000062BC000-memory.dmp
      Filesize

      624KB

    • memory/2368-8-0x00000000063E0000-0x00000000064A0000-memory.dmp
      Filesize

      768KB

    • memory/2368-0-0x00000000751CE000-0x00000000751CF000-memory.dmp
      Filesize

      4KB

    • memory/2368-4-0x00000000055F0000-0x00000000055FA000-memory.dmp
      Filesize

      40KB

    • memory/2368-3-0x0000000005540000-0x00000000055D2000-memory.dmp
      Filesize

      584KB

    • memory/2368-7-0x00000000058E0000-0x00000000058EC000-memory.dmp
      Filesize

      48KB

    • memory/2368-2-0x0000000005BD0000-0x0000000006174000-memory.dmp
      Filesize

      5.6MB

    • memory/2368-6-0x00000000058C0000-0x00000000058D0000-memory.dmp
      Filesize

      64KB

    • memory/2368-1-0x0000000000A50000-0x0000000000B68000-memory.dmp
      Filesize

      1.1MB

    • memory/2368-53-0x00000000751C0000-0x0000000075970000-memory.dmp
      Filesize

      7.7MB

    • memory/2368-5-0x00000000751C0000-0x0000000075970000-memory.dmp
      Filesize

      7.7MB

    • memory/2692-117-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2692-116-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2692-115-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2760-106-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2760-107-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2760-109-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/3536-47-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-45-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-155-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-46-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-139-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-138-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-130-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-126-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-124-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/3536-125-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/3536-121-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/3536-102-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-103-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-131-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-52-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-88-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-89-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-90-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-91-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-154-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-96-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/3536-50-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/4004-77-0x0000000007700000-0x0000000007708000-memory.dmp
      Filesize

      32KB

    • memory/4004-19-0x0000000005100000-0x0000000005122000-memory.dmp
      Filesize

      136KB

    • memory/4004-94-0x00000000751C0000-0x0000000075970000-memory.dmp
      Filesize

      7.7MB

    • memory/4004-76-0x0000000007720000-0x000000000773A000-memory.dmp
      Filesize

      104KB

    • memory/4004-18-0x00000000751C0000-0x0000000075970000-memory.dmp
      Filesize

      7.7MB

    • memory/4004-75-0x0000000007620000-0x0000000007634000-memory.dmp
      Filesize

      80KB

    • memory/4004-20-0x0000000005220000-0x0000000005286000-memory.dmp
      Filesize

      408KB

    • memory/4004-74-0x0000000007610000-0x000000000761E000-memory.dmp
      Filesize

      56KB

    • memory/4004-16-0x0000000005300000-0x0000000005928000-memory.dmp
      Filesize

      6.2MB

    • memory/4004-21-0x0000000005AA0000-0x0000000005B06000-memory.dmp
      Filesize

      408KB

    • memory/4004-17-0x00000000751C0000-0x0000000075970000-memory.dmp
      Filesize

      7.7MB

    • memory/4004-68-0x00000000070B0000-0x0000000007153000-memory.dmp
      Filesize

      652KB

    • memory/4004-15-0x00000000751C0000-0x0000000075970000-memory.dmp
      Filesize

      7.7MB

    • memory/4004-57-0x0000000075A70000-0x0000000075ABC000-memory.dmp
      Filesize

      304KB

    • memory/4004-55-0x0000000006150000-0x000000000619C000-memory.dmp
      Filesize

      304KB

    • memory/4004-73-0x00000000075E0000-0x00000000075F1000-memory.dmp
      Filesize

      68KB

    • memory/4004-72-0x0000000007660000-0x00000000076F6000-memory.dmp
      Filesize

      600KB

    • memory/4004-71-0x0000000007450000-0x000000000745A000-memory.dmp
      Filesize

      40KB

    • memory/4004-14-0x00000000027E0000-0x0000000002816000-memory.dmp
      Filesize

      216KB

    • memory/4004-34-0x0000000005B10000-0x0000000005E64000-memory.dmp
      Filesize

      3.3MB

    • memory/4004-69-0x0000000007A30000-0x00000000080AA000-memory.dmp
      Filesize

      6.5MB

    • memory/4004-70-0x00000000073E0000-0x00000000073FA000-memory.dmp
      Filesize

      104KB

    • memory/4004-56-0x0000000007070000-0x00000000070A2000-memory.dmp
      Filesize

      200KB

    • memory/4004-67-0x0000000006690000-0x00000000066AE000-memory.dmp
      Filesize

      120KB

    • memory/4004-54-0x00000000060C0000-0x00000000060DE000-memory.dmp
      Filesize

      120KB