Analysis

  • max time kernel
    1214s
  • max time network
    1203s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-03-2024 21:57

General

  • Target

    setup_installer.exe

  • Size

    1.5MB

  • MD5

    78418bfb23c7adf70828f675e990de49

  • SHA1

    534a26817c39972287abf166bb00c831440a1e57

  • SHA256

    b14218cb639c6afa35a66cf418035ce10475b53f5386896a44327fd48d8447c8

  • SHA512

    5df88e9bd4d241b69acba4499845e68286cd24fffed582864c24ad4c5d9bd47041c99ac32cc023c7a6dbe4cecaed39882274cbf4e12aedd5220c6e51075a8dd8

  • SSDEEP

    24576:xcVkKSqXCeomdCFDWHp/7F82H1qjUEPY/RQ5DsvLwcaBhdZIl9mTkPdei+uYvSm1:xcBFCpZgu2VqjUEwJ84vLRaBtIl9mT4Y

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.

  • PrivateLoader

    PrivateLoader is a downloader sold as a pay-per-install malware distribution service.

  • RisePro

    RisePro stealer is an infostealer distributed by PrivateLoader.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • ASPack v2.12-2.42 4 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 9 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 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 16 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\setup_installer.exe
    "C:\Users\Admin\AppData\Local\Temp\setup_installer.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1656
    • C:\Users\Admin\AppData\Local\Temp\7zS87647748\setup_install.exe
      "C:\Users\Admin\AppData\Local\Temp\7zS87647748\setup_install.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:532
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c karotima_1.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4368
        • C:\Users\Admin\AppData\Local\Temp\7zS87647748\karotima_1.exe
          karotima_1.exe
          4⤵
          • Modifies Windows Defender Real-time Protection settings
          • Executes dropped EXE
          PID:3632
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c karotima_2.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1516
        • C:\Users\Admin\AppData\Local\Temp\7zS87647748\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:1188
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 532 -s 432
        3⤵
        • Program crash
        PID:4636
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 532 -ip 532
    1⤵
      PID:4756
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1316 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:1484
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4164 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:4400
        • C:\Users\Admin\AppData\Roaming\dactssf
          C:\Users\Admin\AppData\Roaming\dactssf
          1⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Checks SCSI registry key(s)
          • Suspicious behavior: MapViewOfSection
          PID:2980

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\7zS87647748\karotima_1.exe

          Filesize

          404KB

          MD5

          6a2442eb77d1902143fc827bd5d48ec3

          SHA1

          d497a444fdfda957a25ed84f7c06b8af16d3d1e9

          SHA256

          77f8374fecdcc9cc3cf3950d9031cd79d3b072a28e90d651b7fd423146e8b7dc

          SHA512

          64dd628b4d665509bfc6676305768f68d9565ff4fbd957888308628d34154efe4f93d5c1e559608b4b24290a283d8ce7837aff960e6f067e1cb99370e5e5a2f6

        • C:\Users\Admin\AppData\Local\Temp\7zS87647748\karotima_1.txt

          Filesize

          704KB

          MD5

          e695187c33a7361aeb62a22f932c47a6

          SHA1

          fa7dba76a9b0ff4debd1e5c6efafd39b8998e250

          SHA256

          8f7d1f2d80f341b415aec239aa23a1a5be74b10e92839a35554927f3d1ddbdb7

          SHA512

          d823ad4fb66e486a99f01aedba52f2b66590a7aa3ca38589d860a77c98055da21c0d7b19cfd0de00f271a31d4f07f819dc1be6cca3031e822660ea6b35692e9b

        • C:\Users\Admin\AppData\Local\Temp\7zS87647748\karotima_2.txt

          Filesize

          222KB

          MD5

          80e74cf9f38c5712c6c2432a509c8bc7

          SHA1

          62ccdca04b3685728ce7f1a785cc01f3a3f3b3dc

          SHA256

          9ff44c4da853cdbe606d2cfe4d04b410c3ae603acf0f1d3f75195b6236e0e123

          SHA512

          d602cd95ad38cacae41b4848e72ac54ad81d287e1c825d68a088009512b14b5290a5a6c3032ebb2c91fecb5f743d519e92f1ccb27f5fe2841094a693d2b8de49

        • C:\Users\Admin\AppData\Local\Temp\7zS87647748\libcurl.dll

          Filesize

          218KB

          MD5

          d09be1f47fd6b827c81a4812b4f7296f

          SHA1

          028ae3596c0790e6d7f9f2f3c8e9591527d267f7

          SHA256

          0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e

          SHA512

          857f44a1383c29208509b8f1164b6438d750d5bb4419add7626986333433e67a0d1211ec240ce9472f30a1f32b16c8097aceba4b2255641b3d8928f94237f595

        • C:\Users\Admin\AppData\Local\Temp\7zS87647748\libcurlpp.dll

          Filesize

          54KB

          MD5

          e6e578373c2e416289a8da55f1dc5e8e

          SHA1

          b601a229b66ec3d19c2369b36216c6f6eb1c063e

          SHA256

          43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f

          SHA512

          9df6a8c418113a77051f6cb02745ad48c521c13cdadb85e0e37f79e29041464c8c7d7ba8c558fdd877035eb8475b6f93e7fc62b38504ddfe696a61480cabac89

        • C:\Users\Admin\AppData\Local\Temp\7zS87647748\libgcc_s_dw2-1.dll

          Filesize

          113KB

          MD5

          9aec524b616618b0d3d00b27b6f51da1

          SHA1

          64264300801a353db324d11738ffed876550e1d3

          SHA256

          59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e

          SHA512

          0648a26940e8f4aad73b05ad53e43316dd688e5d55e293cce88267b2b8744412be2e0d507dadad830776bf715bcd819f00f5d1f7ac1c5f1c4f682fb7457a20d0

        • C:\Users\Admin\AppData\Local\Temp\7zS87647748\libstdc++-6.dll

          Filesize

          647KB

          MD5

          5e279950775baae5fea04d2cc4526bcc

          SHA1

          8aef1e10031c3629512c43dd8b0b5d9060878453

          SHA256

          97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87

          SHA512

          666325e9ed71da4955058aea31b91e2e848be43211e511865f393b7f537c208c6b31c182f7d728c2704e9fc87e7d1be3f98f5fee4d34f11c56764e1c599afd02

        • C:\Users\Admin\AppData\Local\Temp\7zS87647748\libwinpthread-1.dll

          Filesize

          69KB

          MD5

          1e0d62c34ff2e649ebc5c372065732ee

          SHA1

          fcfaa36ba456159b26140a43e80fbd7e9d9af2de

          SHA256

          509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723

          SHA512

          3653f8ed8ad3476632f731a3e76c6aae97898e4bf14f70007c93e53bc443906835be29f861c4a123db5b11e0f3dd5013b2b3833469a062060825df9ee708dc61

        • C:\Users\Admin\AppData\Local\Temp\7zS87647748\setup_install.exe

          Filesize

          290KB

          MD5

          118f130d93db3be4452ad8a0751509df

          SHA1

          4cac4b964784aadc7e6f41c21b854c668dca6981

          SHA256

          f7dec887c3345567ce86ce60cc8841a6a54eda35049811049debd1c5451656f4

          SHA512

          ec263d9cfc0a0324f8f79f6f6703f507d06f454cbc9964595a00d9606aae86c34920c8a10ef3d4413aceb85e33d731634200c0e7ee099b8a35baf8e69f46234f

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

          Filesize

          1.2MB

          MD5

          b98c4833b521ddd435db37863dd42392

          SHA1

          bcd52fc985d44fb6f7f366290e8ef277d1bf8234

          SHA256

          71ecb06d9584f312c375b9bef2b22b71e803ae791c817924c9267572ca968a87

          SHA512

          de2dd1b037857470a64b2f7a4f840a5e01170185237b07ca0b375e70c68de19e299f15dfeef3d6a18231ec6b936f63f7df338a489b19a0905afdded05fdbf596

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

          Filesize

          1.6MB

          MD5

          4f3387277ccbd6d1f21ac5c07fe4ca68

          SHA1

          e16506f662dc92023bf82def1d621497c8ab5890

          SHA256

          767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

          SHA512

          9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

        • memory/532-51-0x0000000000400000-0x000000000051E000-memory.dmp

          Filesize

          1.1MB

        • memory/532-31-0x000000006B280000-0x000000006B2A6000-memory.dmp

          Filesize

          152KB

        • memory/532-44-0x000000006FE40000-0x000000006FFC6000-memory.dmp

          Filesize

          1.5MB

        • memory/532-42-0x0000000064940000-0x0000000064959000-memory.dmp

          Filesize

          100KB

        • memory/532-40-0x000000006B440000-0x000000006B4CF000-memory.dmp

          Filesize

          572KB

        • memory/532-46-0x000000006FE40000-0x000000006FFC6000-memory.dmp

          Filesize

          1.5MB

        • memory/532-45-0x000000006FE40000-0x000000006FFC6000-memory.dmp

          Filesize

          1.5MB

        • memory/532-47-0x000000006B280000-0x000000006B2A6000-memory.dmp

          Filesize

          152KB

        • memory/532-48-0x000000006B280000-0x000000006B2A6000-memory.dmp

          Filesize

          152KB

        • memory/532-49-0x0000000000400000-0x000000000051E000-memory.dmp

          Filesize

          1.1MB

        • memory/532-50-0x0000000000400000-0x000000000051E000-memory.dmp

          Filesize

          1.1MB

        • memory/532-41-0x000000006FE40000-0x000000006FFC6000-memory.dmp

          Filesize

          1.5MB

        • memory/532-53-0x0000000000400000-0x000000000051E000-memory.dmp

          Filesize

          1.1MB

        • memory/532-54-0x0000000000400000-0x000000000051E000-memory.dmp

          Filesize

          1.1MB

        • memory/532-52-0x0000000000400000-0x000000000051E000-memory.dmp

          Filesize

          1.1MB

        • memory/532-39-0x000000006B440000-0x000000006B4CF000-memory.dmp

          Filesize

          572KB

        • memory/532-38-0x000000006B440000-0x000000006B4CF000-memory.dmp

          Filesize

          572KB

        • memory/532-43-0x000000006FE40000-0x000000006FFC6000-memory.dmp

          Filesize

          1.5MB

        • memory/532-60-0x0000000000400000-0x000000000051E000-memory.dmp

          Filesize

          1.1MB

        • memory/532-61-0x000000006B440000-0x000000006B4CF000-memory.dmp

          Filesize

          572KB

        • memory/532-64-0x0000000064940000-0x0000000064959000-memory.dmp

          Filesize

          100KB

        • memory/532-22-0x0000000000400000-0x000000000051E000-memory.dmp

          Filesize

          1.1MB

        • memory/532-62-0x000000006B280000-0x000000006B2A6000-memory.dmp

          Filesize

          152KB

        • memory/532-28-0x000000006B440000-0x000000006B4CF000-memory.dmp

          Filesize

          572KB

        • memory/532-68-0x000000006EB40000-0x000000006EB63000-memory.dmp

          Filesize

          140KB

        • memory/532-66-0x000000006FE40000-0x000000006FFC6000-memory.dmp

          Filesize

          1.5MB

        • memory/1188-67-0x0000000002CE0000-0x0000000002CE9000-memory.dmp

          Filesize

          36KB

        • memory/1188-72-0x0000000000400000-0x0000000002B7B000-memory.dmp

          Filesize

          39.5MB

        • memory/1188-75-0x0000000000400000-0x0000000002B7B000-memory.dmp

          Filesize

          39.5MB

        • memory/1188-65-0x0000000002D60000-0x0000000002E60000-memory.dmp

          Filesize

          1024KB

        • memory/2980-84-0x0000000002D50000-0x0000000002E50000-memory.dmp

          Filesize

          1024KB

        • memory/2980-89-0x0000000000400000-0x0000000002B7B000-memory.dmp

          Filesize

          39.5MB

        • memory/2980-93-0x0000000000400000-0x0000000002B7B000-memory.dmp

          Filesize

          39.5MB

        • memory/3188-73-0x0000000002DB0000-0x0000000002DC5000-memory.dmp

          Filesize

          84KB

        • memory/3188-90-0x0000000002DE0000-0x0000000002DF5000-memory.dmp

          Filesize

          84KB