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Analysis

  • max time kernel
    175s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    10/04/2024, 11:26

General

  • Target

    setup_installer.exe

  • Size

    1.5MB

  • MD5

    fb0b833f695d52b7a9cc308b48136710

  • SHA1

    8899b9196dad0c2d8e9900f2d8cdb10aff9ed87b

  • SHA256

    f3e28af372f1ecbe4bfc290214c09e4ba3485556ebc847971009996cd92daa48

  • SHA512

    9c77ce45b8eb09085f15ab8ec7301cf2d27e9ff2689089591576cb96b248fc58709934c38a60213f710cca8bd0276f7b206f18cadef5c392d95ad783f7540e88

  • SSDEEP

    49152:xcBhCpZgu2K8EEwJ84vLRaBtIl9mTH7szUnTffo:xFZ2HzCvLUBsKHYITfo

Malware Config

Extracted

Family

nullmixer

C2

http://marisana.xyz/

Extracted

Family

smokeloader

Botnet

pub6

Extracted

Family

smokeloader

Version

2020

C2

http://conceitosseg.com/upload/

http://integrasidata.com/upload/

http://ozentekstil.com/upload/

http://finbelportal.com/upload/

http://telanganadigital.com/upload/

rc4.i32
rc4.i32

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 7 IoCs
  • NullMixer

    NullMixer is a malware dropper leading to an infection chain of a wide variety of malware families.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • ASPack v2.12-2.42 4 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 26 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\setup_installer.exe
    "C:\Users\Admin\AppData\Local\Temp\setup_installer.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2724
    • C:\Users\Admin\AppData\Local\Temp\7zS4AAD3A27\setup_install.exe
      "C:\Users\Admin\AppData\Local\Temp\7zS4AAD3A27\setup_install.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2108
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c karotima_1.exe
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2448
        • C:\Users\Admin\AppData\Local\Temp\7zS4AAD3A27\karotima_1.exe
          karotima_1.exe
          4⤵
          • Modifies Windows Defender Real-time Protection settings
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2856
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c karotima_2.exe
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1568
        • C:\Users\Admin\AppData\Local\Temp\7zS4AAD3A27\karotima_2.exe
          karotima_2.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Checks SCSI registry key(s)
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          PID:2064
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2108 -s 372
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:1532
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {881BF629-0ED7-4872-B621-4AEDC8E6CD38} S-1-5-21-2461186416-2307104501-1787948496-1000:MGILJUBR\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2492
    • C:\Users\Admin\AppData\Roaming\baacwbi
      C:\Users\Admin\AppData\Roaming\baacwbi
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2480
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2480 -s 124
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:1736

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\7zS4AAD3A27\karotima_1.txt

    Filesize

    1.0MB

    MD5

    9108ad5775c76cccbb4eadf02de24f5d

    SHA1

    82996bc4f72b3234536d0b58630d5d26bcf904b0

    SHA256

    c9d5525b2f2b76087121039ee1c23ed35508e60f653479722ec64ea3a064878e

    SHA512

    19021a28555bba1fe1bdcdc8845f1bcadebd256c7db02b9329d6b44ae01a123a00e162cc34a97ba51f088cafa6f54ab1de8f82f771ac54b94a3a796f84f73362

  • C:\Users\Admin\AppData\Local\Temp\7zS4AAD3A27\karotima_2.txt

    Filesize

    336KB

    MD5

    2ff9c527ec0a3f147a05e323901d80a2

    SHA1

    fedc4bade881878bd7a97df09f89e6e4bf7d8e6e

    SHA256

    b52cc9870c8540fef3adb945edc11134747bfdae420f7b1e5b37f60d28188165

    SHA512

    0f33bc887c24dc8bba9f3749fb70a8489d0f51ef3dc0b30295548b7f0698ae0239a6d29ece52775335a811cbf3b31bc3a6e550505c05d7e08d96853ef72eb6a4

  • C:\Users\Admin\AppData\Local\Temp\7zS4AAD3A27\libcurl.dll

    Filesize

    218KB

    MD5

    d09be1f47fd6b827c81a4812b4f7296f

    SHA1

    028ae3596c0790e6d7f9f2f3c8e9591527d267f7

    SHA256

    0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e

    SHA512

    857f44a1383c29208509b8f1164b6438d750d5bb4419add7626986333433e67a0d1211ec240ce9472f30a1f32b16c8097aceba4b2255641b3d8928f94237f595

  • C:\Users\Admin\AppData\Local\Temp\7zS4AAD3A27\libgcc_s_dw2-1.dll

    Filesize

    113KB

    MD5

    9aec524b616618b0d3d00b27b6f51da1

    SHA1

    64264300801a353db324d11738ffed876550e1d3

    SHA256

    59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e

    SHA512

    0648a26940e8f4aad73b05ad53e43316dd688e5d55e293cce88267b2b8744412be2e0d507dadad830776bf715bcd819f00f5d1f7ac1c5f1c4f682fb7457a20d0

  • C:\Users\Admin\AppData\Local\Temp\7zS4AAD3A27\libstdc++-6.dll

    Filesize

    647KB

    MD5

    5e279950775baae5fea04d2cc4526bcc

    SHA1

    8aef1e10031c3629512c43dd8b0b5d9060878453

    SHA256

    97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87

    SHA512

    666325e9ed71da4955058aea31b91e2e848be43211e511865f393b7f537c208c6b31c182f7d728c2704e9fc87e7d1be3f98f5fee4d34f11c56764e1c599afd02

  • \Users\Admin\AppData\Local\Temp\7zS4AAD3A27\libcurlpp.dll

    Filesize

    54KB

    MD5

    e6e578373c2e416289a8da55f1dc5e8e

    SHA1

    b601a229b66ec3d19c2369b36216c6f6eb1c063e

    SHA256

    43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f

    SHA512

    9df6a8c418113a77051f6cb02745ad48c521c13cdadb85e0e37f79e29041464c8c7d7ba8c558fdd877035eb8475b6f93e7fc62b38504ddfe696a61480cabac89

  • \Users\Admin\AppData\Local\Temp\7zS4AAD3A27\libwinpthread-1.dll

    Filesize

    69KB

    MD5

    1e0d62c34ff2e649ebc5c372065732ee

    SHA1

    fcfaa36ba456159b26140a43e80fbd7e9d9af2de

    SHA256

    509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723

    SHA512

    3653f8ed8ad3476632f731a3e76c6aae97898e4bf14f70007c93e53bc443906835be29f861c4a123db5b11e0f3dd5013b2b3833469a062060825df9ee708dc61

  • \Users\Admin\AppData\Local\Temp\7zS4AAD3A27\setup_install.exe

    Filesize

    290KB

    MD5

    0adbf20ecc69c2f9df3fb4af96b8660d

    SHA1

    c38ccbb6766ac9c8441f5322144dbadd6c2d2639

    SHA256

    8b43fcc176c108c312e0d3af6ae897a6416f6754556dfd013a34559546197310

    SHA512

    f109a8fdd892374aaa73b2523fe981e9b2b68bc53406938414e532b7a529ba821752e9d716061bcbfb30567759778142da116e665f5dce62f85bba7485f99998

  • \Users\Admin\AppData\Local\Temp\CC4F.tmp

    Filesize

    1.2MB

    MD5

    d124f55b9393c976963407dff51ffa79

    SHA1

    2c7bbedd79791bfb866898c85b504186db610b5d

    SHA256

    ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

    SHA512

    278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

  • memory/1292-94-0x0000000002160000-0x0000000002175000-memory.dmp

    Filesize

    84KB

  • memory/2064-81-0x0000000000400000-0x000000000046F000-memory.dmp

    Filesize

    444KB

  • memory/2064-80-0x0000000000250000-0x0000000000259000-memory.dmp

    Filesize

    36KB

  • memory/2064-79-0x0000000000520000-0x0000000000620000-memory.dmp

    Filesize

    1024KB

  • memory/2064-95-0x0000000000400000-0x000000000046F000-memory.dmp

    Filesize

    444KB

  • memory/2108-46-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2108-49-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2108-50-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2108-52-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2108-54-0x0000000000AF0000-0x0000000000C0E000-memory.dmp

    Filesize

    1.1MB

  • memory/2108-53-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2108-55-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2108-57-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/2108-58-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/2108-60-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2108-61-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2108-62-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2108-63-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2108-64-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2108-65-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2108-51-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2108-48-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2108-47-0x0000000064940000-0x0000000064959000-memory.dmp

    Filesize

    100KB

  • memory/2108-45-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2108-35-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2108-32-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/2108-89-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/2108-88-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2108-91-0x000000006EB40000-0x000000006EB63000-memory.dmp

    Filesize

    140KB

  • memory/2108-90-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2108-93-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2108-92-0x0000000064940000-0x0000000064959000-memory.dmp

    Filesize

    100KB

  • memory/2108-28-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2480-177-0x0000000000640000-0x0000000000740000-memory.dmp

    Filesize

    1024KB

  • memory/2480-178-0x0000000000400000-0x000000000046F000-memory.dmp

    Filesize

    444KB

  • memory/2724-26-0x00000000024A0000-0x00000000025BE000-memory.dmp

    Filesize

    1.1MB