Analysis

  • max time kernel
    148s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/12/2023, 12:17

General

  • Target

    3.exe

  • Size

    973KB

  • MD5

    e2473c2832fb852d2aa8785e90b285a0

  • SHA1

    663f5fd69dfd51e8608ea5e2231319923db26b1d

  • SHA256

    b67319d5978b2236bb8a735b1838b18b6432cb835fce1b9b08ff2d68e012bc50

  • SHA512

    4368f1289746e425eec96762e05894f524ef43424db92d66730c2eb8bfadffecb9126588da97a21f28273babba53bb94396a72e0a0abcf391c512adf8ae1efba

  • SSDEEP

    24576:i9PtD/fmh3G6dGSCjFqHvwy8zfGIvtooo:UBt2GtFqPwGjr

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

107.175.229.139:8087

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-IZFV1M

  • 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 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 7 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 12 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3.exe
    "C:\Users\Admin\AppData\Local\Temp\3.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3664
    • 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\3.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4388
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\LCofJSC.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1212
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LCofJSC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEB0C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4744
    • C:\Users\Admin\AppData\Local\Temp\3.exe
      "C:\Users\Admin\AppData\Local\Temp\3.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3056
      • C:\Users\Admin\AppData\Local\Temp\3.exe
        C:\Users\Admin\AppData\Local\Temp\3.exe /stext "C:\Users\Admin\AppData\Local\Temp\vtsuixo"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1708
      • C:\Users\Admin\AppData\Local\Temp\3.exe
        C:\Users\Admin\AppData\Local\Temp\3.exe /stext "C:\Users\Admin\AppData\Local\Temp\vtsuixo"
        3⤵
          PID:3888
        • C:\Users\Admin\AppData\Local\Temp\3.exe
          C:\Users\Admin\AppData\Local\Temp\3.exe /stext "C:\Users\Admin\AppData\Local\Temp\fwxfjqzyha"
          3⤵
            PID:5040
          • C:\Users\Admin\AppData\Local\Temp\3.exe
            C:\Users\Admin\AppData\Local\Temp\3.exe /stext "C:\Users\Admin\AppData\Local\Temp\fwxfjqzyha"
            3⤵
              PID:1328
            • C:\Users\Admin\AppData\Local\Temp\3.exe
              C:\Users\Admin\AppData\Local\Temp\3.exe /stext "C:\Users\Admin\AppData\Local\Temp\fwxfjqzyha"
              3⤵
              • Accesses Microsoft Outlook accounts
              PID:4828
            • C:\Users\Admin\AppData\Local\Temp\3.exe
              C:\Users\Admin\AppData\Local\Temp\3.exe /stext "C:\Users\Admin\AppData\Local\Temp\fwxfjqzyha"
              3⤵
                PID:2432
              • C:\Users\Admin\AppData\Local\Temp\3.exe
                C:\Users\Admin\AppData\Local\Temp\3.exe /stext "C:\Users\Admin\AppData\Local\Temp\qqkxjijzdijvs"
                3⤵
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:2512

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • C:\ProgramData\remcos\logs.dat

                  Filesize

                  144B

                  MD5

                  bb0fc9f9038df30da5a1defa8e96ecaf

                  SHA1

                  a5be8b5048de34df35ef3e4374a28dd6d9d402a1

                  SHA256

                  c0b9c1534a3f2c60740e5ad5b015e2ab71f46172596c66c8a53c3e51932178ed

                  SHA512

                  2e200afdac865e092dccd5a3b029bfff98b52befe4f9000ebbed598f51e6dc1d4587e496267d1ee82d6bb29fd8b7360ba6afb574a596b95b729c78acedab795f

                • 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

                  de30da6724b2860048c3ba44cfe280ff

                  SHA1

                  d0b940c9fc1d68b9af3d9b12a43634ae584f5839

                  SHA256

                  b575aab3c4188aa2d8d77901ed0cac75e2e7294babd4d8eab8e513824af6c5f3

                  SHA512

                  c956c36642396f97b30da350f2290de90471ca21bb260139433c046e1f48e2e60d15fe2dfaff1ef33598e6cb0644e0527ba7eb5392ee1dbe3394222a0e188256

                • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_we0jic0w.cf2.ps1

                  Filesize

                  60B

                  MD5

                  d17fe0a3f47be24a6453e9ef58c94641

                  SHA1

                  6ab83620379fc69f80c0242105ddffd7d98d5d9d

                  SHA256

                  96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

                  SHA512

                  5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

                • C:\Users\Admin\AppData\Local\Temp\tmpEB0C.tmp

                  Filesize

                  1KB

                  MD5

                  b064593f380d81a67670ffd93af5fd48

                  SHA1

                  179cf058d6dc3e2803e4f7e3e25e5d7b308674ae

                  SHA256

                  3bb1fe5b90bd4d5c6c6f22f153b879defe260bb2264a78c7cbf9e34b3c985d6e

                  SHA512

                  07c7fbe3a8d4d199d241154dc24bb9bcc964b2114075e9cf67ad5ee10e851a6fa1968eb91c11d1a29bc3774d515fa3449e50fef5264b09e5a59abf1623a1c127

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

                  Filesize

                  4KB

                  MD5

                  d093259faaf962da227a2205c7fb4def

                  SHA1

                  2a1322acb010cca3a46025b1258ae735b05cff31

                  SHA256

                  b66b13e023031b845dddc9ddba7de6aa74c3161f3d5fafc8e38f80480e4107d2

                  SHA512

                  7e7a445fdb5d6aa4550bd65b75a409deba8748eed90812f6344c961cc397749e8a8f60002409e6de41ffce4a0fd490decedb85f730917a29fd5b4c6eb7ca7fd7

                • memory/1212-100-0x0000000008210000-0x000000000888A000-memory.dmp

                  Filesize

                  6.5MB

                • memory/1212-47-0x0000000006300000-0x0000000006654000-memory.dmp

                  Filesize

                  3.3MB

                • memory/1212-131-0x00000000054B0000-0x00000000054C0000-memory.dmp

                  Filesize

                  64KB

                • memory/1212-129-0x00000000054B0000-0x00000000054C0000-memory.dmp

                  Filesize

                  64KB

                • memory/1212-138-0x0000000007F50000-0x0000000007F64000-memory.dmp

                  Filesize

                  80KB

                • memory/1212-60-0x0000000006970000-0x00000000069BC000-memory.dmp

                  Filesize

                  304KB

                • memory/1212-121-0x0000000075220000-0x00000000759D0000-memory.dmp

                  Filesize

                  7.7MB

                • memory/1212-67-0x00000000054B0000-0x00000000054C0000-memory.dmp

                  Filesize

                  64KB

                • memory/1212-69-0x000000007F680000-0x000000007F690000-memory.dmp

                  Filesize

                  64KB

                • memory/1212-70-0x0000000006E80000-0x0000000006EB2000-memory.dmp

                  Filesize

                  200KB

                • memory/1212-73-0x0000000073CD0000-0x0000000073D1C000-memory.dmp

                  Filesize

                  304KB

                • memory/1212-94-0x00000000078A0000-0x0000000007943000-memory.dmp

                  Filesize

                  652KB

                • memory/1212-22-0x0000000075220000-0x00000000759D0000-memory.dmp

                  Filesize

                  7.7MB

                • memory/1212-24-0x00000000054B0000-0x00000000054C0000-memory.dmp

                  Filesize

                  64KB

                • memory/1212-23-0x00000000054B0000-0x00000000054C0000-memory.dmp

                  Filesize

                  64KB

                • memory/1212-140-0x0000000007F90000-0x0000000007F98000-memory.dmp

                  Filesize

                  32KB

                • memory/1212-26-0x00000000058F0000-0x0000000005912000-memory.dmp

                  Filesize

                  136KB

                • memory/1212-101-0x0000000007BD0000-0x0000000007BEA000-memory.dmp

                  Filesize

                  104KB

                • memory/1212-59-0x00000000068C0000-0x00000000068DE000-memory.dmp

                  Filesize

                  120KB

                • memory/1212-137-0x0000000007F40000-0x0000000007F4E000-memory.dmp

                  Filesize

                  56KB

                • memory/1212-146-0x0000000075220000-0x00000000759D0000-memory.dmp

                  Filesize

                  7.7MB

                • memory/1708-95-0x0000000000400000-0x0000000000478000-memory.dmp

                  Filesize

                  480KB

                • memory/1708-97-0x0000000000400000-0x0000000000478000-memory.dmp

                  Filesize

                  480KB

                • memory/1708-99-0x0000000000400000-0x0000000000478000-memory.dmp

                  Filesize

                  480KB

                • memory/1708-122-0x0000000000400000-0x0000000000478000-memory.dmp

                  Filesize

                  480KB

                • memory/2512-108-0x0000000000400000-0x0000000000424000-memory.dmp

                  Filesize

                  144KB

                • memory/2512-114-0x0000000000400000-0x0000000000424000-memory.dmp

                  Filesize

                  144KB

                • memory/2512-118-0x0000000000400000-0x0000000000424000-memory.dmp

                  Filesize

                  144KB

                • memory/2512-116-0x0000000000400000-0x0000000000424000-memory.dmp

                  Filesize

                  144KB

                • memory/3056-30-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-124-0x0000000010000000-0x0000000010019000-memory.dmp

                  Filesize

                  100KB

                • memory/3056-58-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-61-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-62-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-64-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-66-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-57-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-179-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-56-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-53-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-178-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-171-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-170-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-54-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-163-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-42-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-162-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-155-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-154-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-29-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-135-0x0000000010000000-0x0000000010019000-memory.dmp

                  Filesize

                  100KB

                • memory/3056-134-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-133-0x0000000000400000-0x0000000000482000-memory.dmp

                  Filesize

                  520KB

                • memory/3056-132-0x0000000010000000-0x0000000010019000-memory.dmp

                  Filesize

                  100KB

                • memory/3056-128-0x0000000010000000-0x0000000010019000-memory.dmp

                  Filesize

                  100KB

                • memory/3056-130-0x0000000010000000-0x0000000010019000-memory.dmp

                  Filesize

                  100KB

                • memory/3664-4-0x0000000004DE0000-0x0000000004DF0000-memory.dmp

                  Filesize

                  64KB

                • memory/3664-8-0x0000000004DC0000-0x0000000004DCA000-memory.dmp

                  Filesize

                  40KB

                • memory/3664-52-0x0000000075220000-0x00000000759D0000-memory.dmp

                  Filesize

                  7.7MB

                • memory/3664-0-0x0000000000110000-0x000000000020A000-memory.dmp

                  Filesize

                  1000KB

                • memory/3664-1-0x0000000075220000-0x00000000759D0000-memory.dmp

                  Filesize

                  7.7MB

                • memory/3664-2-0x0000000005210000-0x00000000057B4000-memory.dmp

                  Filesize

                  5.6MB

                • memory/3664-3-0x0000000004C60000-0x0000000004CF2000-memory.dmp

                  Filesize

                  584KB

                • memory/3664-5-0x0000000004C00000-0x0000000004C0A000-memory.dmp

                  Filesize

                  40KB

                • memory/3664-6-0x0000000004D80000-0x0000000004D98000-memory.dmp

                  Filesize

                  96KB

                • memory/3664-10-0x0000000006100000-0x000000000619C000-memory.dmp

                  Filesize

                  624KB

                • memory/3664-7-0x0000000004DB0000-0x0000000004DB8000-memory.dmp

                  Filesize

                  32KB

                • memory/3664-9-0x00000000077E0000-0x0000000007898000-memory.dmp

                  Filesize

                  736KB

                • memory/3664-19-0x0000000075220000-0x00000000759D0000-memory.dmp

                  Filesize

                  7.7MB

                • memory/3664-21-0x0000000004DE0000-0x0000000004DF0000-memory.dmp

                  Filesize

                  64KB

                • memory/4388-136-0x0000000005660000-0x0000000005671000-memory.dmp

                  Filesize

                  68KB

                • memory/4388-112-0x0000000005610000-0x0000000005620000-memory.dmp

                  Filesize

                  64KB

                • memory/4388-68-0x0000000005610000-0x0000000005620000-memory.dmp

                  Filesize

                  64KB

                • memory/4388-72-0x0000000075220000-0x00000000759D0000-memory.dmp

                  Filesize

                  7.7MB

                • memory/4388-74-0x000000007F270000-0x000000007F280000-memory.dmp

                  Filesize

                  64KB

                • memory/4388-18-0x0000000005C50000-0x0000000006278000-memory.dmp

                  Filesize

                  6.2MB

                • memory/4388-126-0x0000000007EB0000-0x0000000007F46000-memory.dmp

                  Filesize

                  600KB

                • memory/4388-92-0x0000000006ED0000-0x0000000006EEE000-memory.dmp

                  Filesize

                  120KB

                • memory/4388-139-0x0000000007F80000-0x0000000007F9A000-memory.dmp

                  Filesize

                  104KB

                • memory/4388-28-0x00000000062F0000-0x0000000006356000-memory.dmp

                  Filesize

                  408KB

                • memory/4388-109-0x0000000005610000-0x0000000005620000-memory.dmp

                  Filesize

                  64KB

                • memory/4388-20-0x0000000005610000-0x0000000005620000-memory.dmp

                  Filesize

                  64KB

                • memory/4388-15-0x0000000002FE0000-0x0000000003016000-memory.dmp

                  Filesize

                  216KB

                • memory/4388-147-0x0000000075220000-0x00000000759D0000-memory.dmp

                  Filesize

                  7.7MB

                • memory/4388-71-0x0000000073CD0000-0x0000000073D1C000-memory.dmp

                  Filesize

                  304KB

                • memory/4388-117-0x0000000007CA0000-0x0000000007CAA000-memory.dmp

                  Filesize

                  40KB

                • memory/4388-27-0x00000000058E0000-0x0000000005946000-memory.dmp

                  Filesize

                  408KB

                • memory/4388-16-0x0000000075220000-0x00000000759D0000-memory.dmp

                  Filesize

                  7.7MB

                • memory/4388-17-0x0000000005610000-0x0000000005620000-memory.dmp

                  Filesize

                  64KB

                • memory/4828-151-0x0000000000400000-0x0000000000457000-memory.dmp

                  Filesize

                  348KB

                • memory/4828-113-0x0000000000400000-0x0000000000457000-memory.dmp

                  Filesize

                  348KB

                • memory/4828-102-0x0000000000400000-0x0000000000457000-memory.dmp

                  Filesize

                  348KB

                • memory/4828-111-0x0000000000400000-0x0000000000457000-memory.dmp

                  Filesize

                  348KB

                • memory/4828-107-0x0000000000400000-0x0000000000457000-memory.dmp

                  Filesize

                  348KB