Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    26-12-2023 20:43

General

  • Target

    8d437876e8f8d2d06f3eea7872e19366.exe

  • Size

    1.5MB

  • MD5

    8d437876e8f8d2d06f3eea7872e19366

  • SHA1

    1602c0b6f1526a7b65fcb1815c9fdf8dbfe68681

  • SHA256

    a11aef5350475e61ecbe2372af59768d8b41178d70ed4ce9ee04d4feb5179a9e

  • SHA512

    d675a1ebe62ccd66f925a1098d44c825ed0b27a1c038734250d58f88143ed3d97a9179f308ab637cdc03021c2df29dca1e5824dc30b7b37ced89a552a5368095

  • SSDEEP

    49152:EgeYWTMp+nJJ1RzFVml3ySsB+cmeKQMSlmwcTYC:Jbijm3ySsBkSQX

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 5 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8d437876e8f8d2d06f3eea7872e19366.exe
    "C:\Users\Admin\AppData\Local\Temp\8d437876e8f8d2d06f3eea7872e19366.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1660
    • 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:2264
      • C:\Users\Admin\AppData\Local\Temp\7zS8D8DDF36\setup_install.exe
        "C:\Users\Admin\AppData\Local\Temp\7zS8D8DDF36\setup_install.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2896
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2896 -s 368
          4⤵
          • Loads dropped DLL
          • Program crash
          PID:1320
  • C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c karotima_2.exe
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1452
    • C:\Users\Admin\AppData\Local\Temp\7zS8D8DDF36\karotima_2.exe
      karotima_2.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1216
  • C:\Users\Admin\AppData\Local\Temp\7zS8D8DDF36\karotima_1.exe
    karotima_1.exe
    1⤵
    • Modifies Windows Defender Real-time Protection settings
    • Executes dropped EXE
    • Loads dropped DLL
    PID:1504
  • C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c karotima_1.exe
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2996

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\7zS8D8DDF36\libstdc++-6.dll

    Filesize

    93KB

    MD5

    b28b8c4b230d589ba006eb247717f9f7

    SHA1

    54ec9a05dc855cfbca4aed5bae1e29a610f12f76

    SHA256

    0b0eea3e23307f7ff7dd95068fbe09247bcbef7ae4e5d62475b0dff2b4d9f1f6

    SHA512

    d548cdad0648896d16e0572babdf8370c078e1c6f3975ae5a0df7327d5a67057dea0d66d40e0f3564b4dbef1a9c527452733c32e3a3fe33dde983207479a0021

  • C:\Users\Admin\AppData\Local\Temp\7zS8D8DDF36\setup_install.exe

    Filesize

    290KB

    MD5

    0754e79a9afd9ad08a26f68844f0242f

    SHA1

    f56e81928d78549f804bc2f85f394d1f59069ae1

    SHA256

    d58f14aeb638ffa98c4adada312bd2301dde0e211e1e2fce57d19c7ba2508bf9

    SHA512

    c1e5378766a61783172022c00fab6c931d0b28750b8373c268d89bff2ae84f989c765b4110f04401c54571ae83c8aded7e7f30e0120a521dc2567bdb71b42be1

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

    Filesize

    1.0MB

    MD5

    bea6b5c8dbafa4df3684ed4e2cad3589

    SHA1

    cd80549ba63b3f8237cf4e0d4afeb48b1680c1ad

    SHA256

    42738f01d2ed00f9ace1684ffeb9e5c8a7a397e3b9d85d2fc02783204c0a1561

    SHA512

    6a48809c92376ec9b21de3efce9bf4bfdd2b2bfdfceede6569b8aecc2b821f9e3686e3cf8493b709f8c8379135163348d5d6b86a4ba67fa4dd2ccbd1f132714d

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

    Filesize

    1024KB

    MD5

    2165bfbc735d951983c870505deb5e57

    SHA1

    ec765a6583f79fb1b3191df355d0d40dc5c8bc2a

    SHA256

    ed5b50f27981312b9fcac0bbf1a73c55ec7cb1c2cb5e455fc9f0112118ab1f3d

    SHA512

    97756fa61af507ca2594c2e01c12225f78f0be7f807d6e8bd8d59e4f0e144269c7c25a9de9f90315273c47a5bf84f1ff8441900161c7648fea6f4be4c7c2b8ce

  • C:\Users\Admin\AppData\Roaming\uswcsis

    Filesize

    96KB

    MD5

    6d4d51b2fd28f7dae97d4db7a3ffee68

    SHA1

    31a6e13cfb5e82c39cc15fe964309416d8715a36

    SHA256

    0550a3eadf408f266592a0843cdf7e626842299ac90fe99a473dcfcbc936aa4f

    SHA512

    4085ad1431e9c8666267b914d2b1a77741194706050a4c7109d96138f05f80fb39ebb04c0c5937f11fb8778ccbfef22953b8d68218d62aa89cc6b35cf1315cc8

  • \Users\Admin\AppData\Local\Temp\7zS8D8DDF36\libcurl.dll

    Filesize

    218KB

    MD5

    d09be1f47fd6b827c81a4812b4f7296f

    SHA1

    028ae3596c0790e6d7f9f2f3c8e9591527d267f7

    SHA256

    0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e

    SHA512

    857f44a1383c29208509b8f1164b6438d750d5bb4419add7626986333433e67a0d1211ec240ce9472f30a1f32b16c8097aceba4b2255641b3d8928f94237f595

  • \Users\Admin\AppData\Local\Temp\7zS8D8DDF36\libcurlpp.dll

    Filesize

    54KB

    MD5

    e6e578373c2e416289a8da55f1dc5e8e

    SHA1

    b601a229b66ec3d19c2369b36216c6f6eb1c063e

    SHA256

    43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f

    SHA512

    9df6a8c418113a77051f6cb02745ad48c521c13cdadb85e0e37f79e29041464c8c7d7ba8c558fdd877035eb8475b6f93e7fc62b38504ddfe696a61480cabac89

  • \Users\Admin\AppData\Local\Temp\7zS8D8DDF36\libgcc_s_dw2-1.dll

    Filesize

    113KB

    MD5

    9aec524b616618b0d3d00b27b6f51da1

    SHA1

    64264300801a353db324d11738ffed876550e1d3

    SHA256

    59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e

    SHA512

    0648a26940e8f4aad73b05ad53e43316dd688e5d55e293cce88267b2b8744412be2e0d507dadad830776bf715bcd819f00f5d1f7ac1c5f1c4f682fb7457a20d0

  • \Users\Admin\AppData\Local\Temp\7zS8D8DDF36\libwinpthread-1.dll

    Filesize

    69KB

    MD5

    1e0d62c34ff2e649ebc5c372065732ee

    SHA1

    fcfaa36ba456159b26140a43e80fbd7e9d9af2de

    SHA256

    509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723

    SHA512

    3653f8ed8ad3476632f731a3e76c6aae97898e4bf14f70007c93e53bc443906835be29f861c4a123db5b11e0f3dd5013b2b3833469a062060825df9ee708dc61

  • \Users\Admin\AppData\Local\Temp\7zS8D8DDF36\setup_install.exe

    Filesize

    92KB

    MD5

    7cc94e079aec3631a7922e007fd83f68

    SHA1

    c2377791bbbeb81e475c0d60dfe325f60959bca2

    SHA256

    d85247262e308a3f2ce9f7f1511872dd8c64e1a164ea790f7b8c589484ac5383

    SHA512

    8c01310dba9dcb571910b88a990d138c29238678179d9b24b3fd1919d9e5584ecb1ab4e8fe31b8378e5936fde5ad50c387c83571b76a997a56aaaba768cbca53

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

    Filesize

    1.1MB

    MD5

    a578c410b0d65fc089452928fb06dcd9

    SHA1

    775b60b888fbbcad67305914bcfb39d4eb77627b

    SHA256

    1b18c140c42914d8bfeec5db158f9e3f3640eed9d3bb74aa90abeb9296e95697

    SHA512

    03b56b5faf9129856eff42ef68d4b7741f0eb9bb56bce5e9b236a7ecbf1dece0774dcb4323f6144593de9bcda52c0558148f64ffb7d7b4142a5fed71ba87d9e3

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

    Filesize

    1.5MB

    MD5

    8d59acc208fe2bac950c8de93d64db21

    SHA1

    f8c1928e249aa58d6c6ca59aa0620cb4592de6e9

    SHA256

    e3dbeabb39f8e35d1c610edb4eb2bcc0b11f41d2feda8dd3f0b4a044b91b6004

    SHA512

    afe93b0e99f63cc3e039f085b0ebbbb81dc50ccab38e47ad69e32c951f075e143fe1c832210a089db23a5130fabe2f14277d5678d02068bb6607ea31051d32f9

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

    Filesize

    92KB

    MD5

    d772d6902200f5d4599a9b27d0d8f9e6

    SHA1

    564eefb3fabe655b2fb51f492959b158cb20e12d

    SHA256

    7bf11639663306b53a7fe0e3826d12f03e1dda7b1fb3abaa758e3281d35f8e17

    SHA512

    6682d79a013129aceba9cde75a82f0444a28d30bfbd1c4656d7e3774b469283027a780362657c908c991f9b5939db32792e6713a323667ab763a95b3f3e23d36

  • memory/1180-135-0x0000000002670000-0x0000000002685000-memory.dmp

    Filesize

    84KB

  • memory/1216-94-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/1216-136-0x0000000000400000-0x000000000046A000-memory.dmp

    Filesize

    424KB

  • memory/1216-92-0x0000000000560000-0x0000000000660000-memory.dmp

    Filesize

    1024KB

  • memory/1216-93-0x0000000000260000-0x0000000000269000-memory.dmp

    Filesize

    36KB

  • memory/2264-39-0x0000000003130000-0x000000000324E000-memory.dmp

    Filesize

    1.1MB

  • memory/2264-32-0x0000000003130000-0x000000000324E000-memory.dmp

    Filesize

    1.1MB

  • memory/2896-68-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2896-66-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2896-72-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2896-71-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/2896-74-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2896-59-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2896-57-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2896-76-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2896-77-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2896-78-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2896-75-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2896-46-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/2896-70-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/2896-63-0x0000000000AE0000-0x0000000000BFE000-memory.dmp

    Filesize

    1.1MB

  • memory/2896-143-0x0000000064940000-0x0000000064959000-memory.dmp

    Filesize

    100KB

  • memory/2896-64-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2896-62-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2896-60-0x0000000064940000-0x0000000064959000-memory.dmp

    Filesize

    100KB

  • memory/2896-58-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2896-49-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2896-144-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2896-41-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2896-142-0x000000006EB40000-0x000000006EB63000-memory.dmp

    Filesize

    140KB

  • memory/2896-141-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2896-140-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/2896-139-0x0000000000400000-0x000000000051E000-memory.dmp

    Filesize

    1.1MB

  • memory/2896-67-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB