Analysis

  • max time kernel
    206s
  • max time network
    239s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    30-12-2023 10:31

General

  • Target

    15ff88418d079a260219d1bc7f8c528a.exe

  • Size

    1.5MB

  • MD5

    15ff88418d079a260219d1bc7f8c528a

  • SHA1

    d26fe29f0ed3c4528e1ab6fa48fae7946f7d6250

  • SHA256

    cd0e83d7ecf53143afa640ee49905b8292169fa7e5eafad521718a303e302322

  • SHA512

    d4e1a94e0a30c7f38ca23ae264be276b9d5ae71d67c1164159ce7af2ddef352ad6a4c04935a711f7c472f1ac2830d4c1df5eed30062c52de067b27ca6e35184c

  • SSDEEP

    49152:xcB6CpZgu29XTEwJ84vLRaBtIl9mTfPVHwCN/Z:xQZ29YCvLUBsK3yCRZ

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 7 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 23 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 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\15ff88418d079a260219d1bc7f8c528a.exe
    "C:\Users\Admin\AppData\Local\Temp\15ff88418d079a260219d1bc7f8c528a.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2544
    • C:\Users\Admin\AppData\Local\Temp\7zS0F9176B7\setup_install.exe
      "C:\Users\Admin\AppData\Local\Temp\7zS0F9176B7\setup_install.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1160
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c karotima_1.exe
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1976
        • C:\Users\Admin\AppData\Local\Temp\7zS0F9176B7\karotima_1.exe
          karotima_1.exe
          4⤵
          • Modifies Windows Defender Real-time Protection settings
          • Executes dropped EXE
          • Loads dropped DLL
          • Modifies system certificate store
          PID:1684
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c karotima_2.exe
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2328
        • C:\Users\Admin\AppData\Local\Temp\7zS0F9176B7\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:1316
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1160 -s 372
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:1692

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\7zS0F9176B7\karotima_1.txt

    Filesize

    1.0MB

    MD5

    9108ad5775c76cccbb4eadf02de24f5d

    SHA1

    82996bc4f72b3234536d0b58630d5d26bcf904b0

    SHA256

    c9d5525b2f2b76087121039ee1c23ed35508e60f653479722ec64ea3a064878e

    SHA512

    19021a28555bba1fe1bdcdc8845f1bcadebd256c7db02b9329d6b44ae01a123a00e162cc34a97ba51f088cafa6f54ab1de8f82f771ac54b94a3a796f84f73362

  • C:\Users\Admin\AppData\Local\Temp\7zS0F9176B7\karotima_2.txt

    Filesize

    329KB

    MD5

    6a67f50ea0a6144b4b8fcb9eae55a9b5

    SHA1

    599af5e17ed6661da5cc3aac09a6a0d59d778db9

    SHA256

    f6bedb7a14c1903d5700977ebe016a08686fda28e9ca87ac9b02c3b8a0441514

    SHA512

    00ba0c6faa83d2ec21cfcd09f329a7c0552017a162131dd22f71483bc4feb03219654132c8e1fce9eec0fe9f7eeaf9b0aa99c4e11bd2ae2b8d298f69836a57ce

  • C:\Users\Admin\AppData\Local\Temp\7zS0F9176B7\setup_install.exe

    Filesize

    249KB

    MD5

    4b9a84350976979a9b84ac7c7974dcee

    SHA1

    000ed6f0558484492c08e78d57604394f0691624

    SHA256

    9cc44a6f65d5703da515e405fa5ce1ac1b36fd3c5187328c69f947c2ff6955ad

    SHA512

    761a53c10a770e0d6ed3b4ecb7cb4ffc0a9830afd6adf1510a659f7c750c1eb14ed57cfba1110299a9f31051a24f6e37d3accace3db2a976f794991c27293350

  • C:\Users\Admin\AppData\Local\Temp\CabC026.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\TarC058.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • \Users\Admin\AppData\Local\Temp\7zS0F9176B7\libcurl.dll

    Filesize

    218KB

    MD5

    d09be1f47fd6b827c81a4812b4f7296f

    SHA1

    028ae3596c0790e6d7f9f2f3c8e9591527d267f7

    SHA256

    0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e

    SHA512

    857f44a1383c29208509b8f1164b6438d750d5bb4419add7626986333433e67a0d1211ec240ce9472f30a1f32b16c8097aceba4b2255641b3d8928f94237f595

  • \Users\Admin\AppData\Local\Temp\7zS0F9176B7\libcurlpp.dll

    Filesize

    54KB

    MD5

    e6e578373c2e416289a8da55f1dc5e8e

    SHA1

    b601a229b66ec3d19c2369b36216c6f6eb1c063e

    SHA256

    43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f

    SHA512

    9df6a8c418113a77051f6cb02745ad48c521c13cdadb85e0e37f79e29041464c8c7d7ba8c558fdd877035eb8475b6f93e7fc62b38504ddfe696a61480cabac89

  • \Users\Admin\AppData\Local\Temp\7zS0F9176B7\libgcc_s_dw2-1.dll

    Filesize

    113KB

    MD5

    9aec524b616618b0d3d00b27b6f51da1

    SHA1

    64264300801a353db324d11738ffed876550e1d3

    SHA256

    59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e

    SHA512

    0648a26940e8f4aad73b05ad53e43316dd688e5d55e293cce88267b2b8744412be2e0d507dadad830776bf715bcd819f00f5d1f7ac1c5f1c4f682fb7457a20d0

  • \Users\Admin\AppData\Local\Temp\7zS0F9176B7\libstdc++-6.dll

    Filesize

    647KB

    MD5

    5e279950775baae5fea04d2cc4526bcc

    SHA1

    8aef1e10031c3629512c43dd8b0b5d9060878453

    SHA256

    97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87

    SHA512

    666325e9ed71da4955058aea31b91e2e848be43211e511865f393b7f537c208c6b31c182f7d728c2704e9fc87e7d1be3f98f5fee4d34f11c56764e1c599afd02

  • \Users\Admin\AppData\Local\Temp\7zS0F9176B7\libwinpthread-1.dll

    Filesize

    69KB

    MD5

    1e0d62c34ff2e649ebc5c372065732ee

    SHA1

    fcfaa36ba456159b26140a43e80fbd7e9d9af2de

    SHA256

    509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723

    SHA512

    3653f8ed8ad3476632f731a3e76c6aae97898e4bf14f70007c93e53bc443906835be29f861c4a123db5b11e0f3dd5013b2b3833469a062060825df9ee708dc61

  • \Users\Admin\AppData\Local\Temp\7zS0F9176B7\setup_install.exe

    Filesize

    192KB

    MD5

    7f4704bfd18132c933a16d609bde09eb

    SHA1

    150921c75ed3fe390f62b78aa01e8e2549fe8b85

    SHA256

    2f07edee5084069697364754260e6a19d0dd0b8e6c4400c4cd06298b20c0bfe2

    SHA512

    3d2bc2a453a7ac097309122613298378958f0353c34707e248f49d1b0042db18e33992f82dd712ffa1b65f6523c48bc4b7492d648f964d90a04ffb45ca36311c

  • \Users\Admin\AppData\Local\Temp\7zS0F9176B7\setup_install.exe

    Filesize

    64KB

    MD5

    13c1f2bf019652e6242517f156ee092d

    SHA1

    04d7f33705192e93580b27507cdfa33cec81cba9

    SHA256

    b104caead5cf362d268935327b5d6c8bfb38a26b60a9a40c2aaef3ec3771eab9

    SHA512

    075fe03e35fd1741c24be7794d3ead80ab336c9ef1f29a129e06ea737ba060e34cc65fd62a8d817ac1f3f94e0dcd959dcb96325b258e30ff7fe1e75ef2628da2

  • \Users\Admin\AppData\Local\Temp\7zS0F9176B7\setup_install.exe

    Filesize

    287KB

    MD5

    89a2b4f76b49d86cae4e45db4acb1fa7

    SHA1

    b052cd7a070cb3330536957ca602241d6c5d60ad

    SHA256

    1aed64d0ce5510fe76ebff2322915303dd46f1129b83a9a89ec1e6ec0d31dba6

    SHA512

    894a1eaefcbce2dc5f422b0f1628cc6b02b51c2a5718605ff13a0a613c12feb144736939fe353d9a21c3b979bc81fe44c11c9e7076500ee2568a85a264135a54

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

    Filesize

    1.2MB

    MD5

    d124f55b9393c976963407dff51ffa79

    SHA1

    2c7bbedd79791bfb866898c85b504186db610b5d

    SHA256

    ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

    SHA512

    278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

  • memory/1160-71-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/1160-77-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/1160-59-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/1160-60-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/1160-58-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/1160-57-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/1160-54-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/1160-53-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/1160-52-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/1160-62-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/1160-61-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/1160-64-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/1160-65-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/1160-68-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/1160-69-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/1160-72-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/1160-51-0x000000006EB40000-0x000000006EB63000-memory.dmp

    Filesize

    140KB

  • memory/1160-70-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/1160-67-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/1160-66-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/1160-49-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/1160-75-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/1160-50-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/1160-55-0x0000000064940000-0x0000000064959000-memory.dmp

    Filesize

    100KB

  • memory/1160-78-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/1160-79-0x000000006EB40000-0x000000006EB63000-memory.dmp

    Filesize

    140KB

  • memory/1160-80-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/1160-97-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/1160-100-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/1160-156-0x000000006EB40000-0x000000006EB63000-memory.dmp

    Filesize

    140KB

  • memory/1160-155-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/1160-154-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/1160-47-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/1160-48-0x0000000064940000-0x0000000064959000-memory.dmp

    Filesize

    100KB

  • memory/1160-46-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/1160-38-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/1160-39-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/1160-147-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/1160-153-0x0000000064940000-0x0000000064959000-memory.dmp

    Filesize

    100KB

  • memory/1160-152-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/1232-148-0x0000000002A20000-0x0000000002A35000-memory.dmp

    Filesize

    84KB

  • memory/1316-149-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/1316-104-0x0000000000890000-0x0000000000990000-memory.dmp

    Filesize

    1024KB

  • memory/1316-106-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/1316-105-0x0000000000240000-0x0000000000249000-memory.dmp

    Filesize

    36KB

  • memory/2544-19-0x00000000023F0000-0x000000000250E000-memory.dmp

    Filesize

    1.1MB

  • memory/2544-29-0x0000000002400000-0x000000000251E000-memory.dmp

    Filesize

    1.1MB

  • memory/2544-28-0x0000000002400000-0x000000000251E000-memory.dmp

    Filesize

    1.1MB