Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    14-03-2024 19:34

General

  • Target

    c9705afcbe13766eedfe83cd901a1cd2.exe

  • Size

    1.5MB

  • MD5

    c9705afcbe13766eedfe83cd901a1cd2

  • SHA1

    5f0a179c3a72744d8e7d16aedebaf5c000b2c019

  • SHA256

    e270a47e3c09fe00dd072297302d96b830682e18214cb7410be4d56f6feb0dd0

  • SHA512

    d34efb1d0f2ef24e277914e292cc09e753f4ca0e9e6189d7163e9932062f4fe2259b180a29ed9d2d5fa3486b3f4e1f2c7e40cf11b7a385562f72534b35f3a53e

  • SSDEEP

    24576:Eg5Qr587v2TIC7sQpnVBf9QQMfcflspnr1+dReMQfOtzan2WnbSXqmndlLMV44gT:EgirovmIm/VhMfcfepnPfgJWn2fPLI6T

Malware Config

Extracted

Family

nullmixer

C2

http://wxkeww.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 27 IoCs
  • 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 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c9705afcbe13766eedfe83cd901a1cd2.exe
    "C:\Users\Admin\AppData\Local\Temp\c9705afcbe13766eedfe83cd901a1cd2.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2916
    • C:\Users\Admin\AppData\Local\Temp\setup_installer.exe
      "C:\Users\Admin\AppData\Local\Temp\setup_installer.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2172
      • C:\Users\Admin\AppData\Local\Temp\7zSC7823B16\setup_install.exe
        "C:\Users\Admin\AppData\Local\Temp\7zSC7823B16\setup_install.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2668
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c karotima_1.exe
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:2948
          • C:\Users\Admin\AppData\Local\Temp\7zSC7823B16\karotima_1.exe
            karotima_1.exe
            5⤵
            • Modifies Windows Defender Real-time Protection settings
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies system certificate store
            PID:2956
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c karotima_2.exe
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:3028
          • C:\Users\Admin\AppData\Local\Temp\7zSC7823B16\karotima_2.exe
            karotima_2.exe
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Checks SCSI registry key(s)
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            PID:1828
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2668 -s 368
          4⤵
          • Loads dropped DLL
          • Program crash
          PID:1588

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    67KB

    MD5

    753df6889fd7410a2e9fe333da83a429

    SHA1

    3c425f16e8267186061dd48ac1c77c122962456e

    SHA256

    b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78

    SHA512

    9d56f79410ad0cf852c74c3ef9454e7ae86e80bdd6ff67773994b48ccac71142bcf5c90635da6a056e1406e81e64674db9584928e867c55b77b59e2851cf6444

  • C:\Users\Admin\AppData\Local\Temp\7zSC7823B16\karotima_1.txt

    Filesize

    1.0MB

    MD5

    9108ad5775c76cccbb4eadf02de24f5d

    SHA1

    82996bc4f72b3234536d0b58630d5d26bcf904b0

    SHA256

    c9d5525b2f2b76087121039ee1c23ed35508e60f653479722ec64ea3a064878e

    SHA512

    19021a28555bba1fe1bdcdc8845f1bcadebd256c7db02b9329d6b44ae01a123a00e162cc34a97ba51f088cafa6f54ab1de8f82f771ac54b94a3a796f84f73362

  • C:\Users\Admin\AppData\Local\Temp\7zSC7823B16\karotima_2.txt

    Filesize

    201KB

    MD5

    7e3cb6bf4000e17ada2121b84b63ddc1

    SHA1

    3d9d09e4603b89913b0eca604021df3c49b4aa31

    SHA256

    439c74d75423ffb0071e342f248c48567f50f50e1f836ae119f5db1387147188

    SHA512

    0989ca525843ca03ebfb32b1f000307e7be9674b7453c7a8724f2206028e9ecc04b9f2ef130639858041d37a2b7a11d7e9b1e23197f22bb0e95f9d6f75291ebf

  • C:\Users\Admin\AppData\Local\Temp\7zSC7823B16\libcurl.dll

    Filesize

    218KB

    MD5

    d09be1f47fd6b827c81a4812b4f7296f

    SHA1

    028ae3596c0790e6d7f9f2f3c8e9591527d267f7

    SHA256

    0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e

    SHA512

    857f44a1383c29208509b8f1164b6438d750d5bb4419add7626986333433e67a0d1211ec240ce9472f30a1f32b16c8097aceba4b2255641b3d8928f94237f595

  • C:\Users\Admin\AppData\Local\Temp\7zSC7823B16\libgcc_s_dw2-1.dll

    Filesize

    113KB

    MD5

    9aec524b616618b0d3d00b27b6f51da1

    SHA1

    64264300801a353db324d11738ffed876550e1d3

    SHA256

    59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e

    SHA512

    0648a26940e8f4aad73b05ad53e43316dd688e5d55e293cce88267b2b8744412be2e0d507dadad830776bf715bcd819f00f5d1f7ac1c5f1c4f682fb7457a20d0

  • C:\Users\Admin\AppData\Local\Temp\7zSC7823B16\libstdc++-6.dll

    Filesize

    647KB

    MD5

    5e279950775baae5fea04d2cc4526bcc

    SHA1

    8aef1e10031c3629512c43dd8b0b5d9060878453

    SHA256

    97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87

    SHA512

    666325e9ed71da4955058aea31b91e2e848be43211e511865f393b7f537c208c6b31c182f7d728c2704e9fc87e7d1be3f98f5fee4d34f11c56764e1c599afd02

  • C:\Users\Admin\AppData\Local\Temp\7zSC7823B16\libwinpthread-1.dll

    Filesize

    69KB

    MD5

    1e0d62c34ff2e649ebc5c372065732ee

    SHA1

    fcfaa36ba456159b26140a43e80fbd7e9d9af2de

    SHA256

    509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723

    SHA512

    3653f8ed8ad3476632f731a3e76c6aae97898e4bf14f70007c93e53bc443906835be29f861c4a123db5b11e0f3dd5013b2b3833469a062060825df9ee708dc61

  • C:\Users\Admin\AppData\Local\Temp\Tar129C.tmp

    Filesize

    175KB

    MD5

    dd73cead4b93366cf3465c8cd32e2796

    SHA1

    74546226dfe9ceb8184651e920d1dbfb432b314e

    SHA256

    a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

    SHA512

    ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

  • \Users\Admin\AppData\Local\Temp\7zSC7823B16\libcurlpp.dll

    Filesize

    54KB

    MD5

    e6e578373c2e416289a8da55f1dc5e8e

    SHA1

    b601a229b66ec3d19c2369b36216c6f6eb1c063e

    SHA256

    43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f

    SHA512

    9df6a8c418113a77051f6cb02745ad48c521c13cdadb85e0e37f79e29041464c8c7d7ba8c558fdd877035eb8475b6f93e7fc62b38504ddfe696a61480cabac89

  • \Users\Admin\AppData\Local\Temp\7zSC7823B16\setup_install.exe

    Filesize

    287KB

    MD5

    117e1a64b0ccd2b5a68a3b5e65fb901b

    SHA1

    11b8fdef6a1f49d132d39bbad6fe9c6bbd7deb5a

    SHA256

    72a4d83686943a9436736bf25a88af512e83b6a8c984e83a64d18cac674e7e24

    SHA512

    035d7f48480198f16df3f2cb8d65f16d0df0bbf7f3a3b57f5dd5a485569e4f52446e993db264ab64053c44a6a1be8683287ae69166ff822a6410e345247ebdc7

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

    Filesize

    1.2MB

    MD5

    d124f55b9393c976963407dff51ffa79

    SHA1

    2c7bbedd79791bfb866898c85b504186db610b5d

    SHA256

    ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

    SHA512

    278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

  • \Users\Admin\AppData\Local\Temp\setup_installer.exe

    Filesize

    1.5MB

    MD5

    d9ff1676cb62a8cd8cf24bb2c5a3d8e3

    SHA1

    d8f2ccdf1e3feb18f726ccd35f8f80611a8b019e

    SHA256

    abe3c1a4d337159c98b15959921d18f0f28add956f482c703cb5609c2656c630

    SHA512

    215812b82cf4e5c00132538d4f1e3447294633ae08d9626d85730d99ba9e401a3f9843890f82506fd45c57b89ebda51c3efa7ef4c0f29ddea175c8a32f181e5a

  • memory/1368-135-0x0000000002B60000-0x0000000002B75000-memory.dmp

    Filesize

    84KB

  • memory/1828-136-0x0000000000400000-0x000000000089C000-memory.dmp

    Filesize

    4.6MB

  • memory/1828-93-0x0000000000250000-0x0000000000259000-memory.dmp

    Filesize

    36KB

  • memory/1828-94-0x0000000000400000-0x000000000089C000-memory.dmp

    Filesize

    4.6MB

  • memory/1828-92-0x0000000000980000-0x0000000000A80000-memory.dmp

    Filesize

    1024KB

  • memory/2172-35-0x0000000002FB0000-0x00000000030CE000-memory.dmp

    Filesize

    1.1MB

  • memory/2668-57-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2668-58-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2668-65-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2668-68-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/2668-70-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2668-69-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/2668-72-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2668-73-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2668-74-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2668-75-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2668-76-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2668-64-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2668-56-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2668-66-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2668-62-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2668-63-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2668-61-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2668-59-0x0000000064940000-0x0000000064959000-memory.dmp

    Filesize

    100KB

  • memory/2668-48-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2668-45-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/2668-39-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2668-139-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2668-140-0x0000000064940000-0x0000000064959000-memory.dmp

    Filesize

    100KB

  • memory/2668-141-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/2668-142-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2668-143-0x000000006EB40000-0x000000006EB63000-memory.dmp

    Filesize

    140KB

  • memory/2668-144-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB