Analysis

  • max time kernel
    141s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/10/2024, 21:40

General

  • Target

    better-kirka-client.exe

  • Size

    105.7MB

  • MD5

    d0602ed29b42ca1493b2bc4bcc81a3cf

  • SHA1

    2c0ffb14ce5614f3ef9747541f2851544e3b73d0

  • SHA256

    16c4ca1d104a18fe96cd82362e3c929b0a6488de87f518e2c8044eb2c2f0be0d

  • SHA512

    c9b06026302fc5640406b7483390116c1a972908a2919fcff121d1b6af4b2785dc68d9d7eca0de1cfbde41abd02026e75aef2392279d36de1478c4b3431b3947

  • SSDEEP

    1572864:iFmLsYZPL7eHm6cXmbtaN8/cStph8sQXR:JB51kRpRY

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Modifies registry class 7 IoCs
  • Modifies system certificate store 2 TTPs 16 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\better-kirka-client.exe
    "C:\Users\Admin\AppData\Local\Temp\better-kirka-client.exe"
    1⤵
    • Modifies registry class
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:5004
    • C:\Users\Admin\AppData\Local\Temp\better-kirka-client.exe
      "C:\Users\Admin\AppData\Local\Temp\better-kirka-client.exe" --type=gpu-process --field-trial-handle=1740,8903408070833357994,17647344412139212632,131072 --enable-features=WebComponentsV0Enabled --disable-features=SpareRendererForSitePerProcess --disable-gpu-vsync --disable-gpu-vsync --gpu-preferences=MAAAAAAAAADgAABwAAAAAAAAAAAAAAAAAABgAAAAAAAQAAAAAAAAAAAAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAA= --mojo-platform-channel-handle=1748 /prefetch:2
      2⤵
        PID:2388
      • C:\Users\Admin\AppData\Local\Temp\better-kirka-client.exe
        "C:\Users\Admin\AppData\Local\Temp\better-kirka-client.exe" --type=utility --field-trial-handle=1740,8903408070833357994,17647344412139212632,131072 --enable-features=WebComponentsV0Enabled --disable-features=SpareRendererForSitePerProcess --lang=en-US --service-sandbox-type=network --mojo-platform-channel-handle=2316 /prefetch:8
        2⤵
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        PID:1972
      • C:\Users\Admin\AppData\Local\Temp\better-kirka-client.exe
        "C:\Users\Admin\AppData\Local\Temp\better-kirka-client.exe" --type=renderer --disable-frame-rate-limit --field-trial-handle=1740,8903408070833357994,17647344412139212632,131072 --enable-features=WebComponentsV0Enabled --disable-features=SpareRendererForSitePerProcess --lang=en-US --app-path="C:\Users\Admin\AppData\Local\Temp\resources\app.asar" --no-sandbox --no-zygote --preload="C:\Users\Admin\AppData\Local\Temp\resources\app.asar\src/preload/ingame.js" --background-color=#222946 --enable-spellcheck --enable-websql --disable-electron-site-instance-overrides --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=3 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2572 /prefetch:1
        2⤵
        • Checks computer location settings
        • Suspicious behavior: EnumeratesProcesses
        PID:4440
      • C:\Users\Admin\AppData\Local\Temp\better-kirka-client.exe
        "C:\Users\Admin\AppData\Local\Temp\better-kirka-client.exe" --type=gpu-process --field-trial-handle=1740,8903408070833357994,17647344412139212632,131072 --enable-features=WebComponentsV0Enabled --disable-features=SpareRendererForSitePerProcess --disable-gpu-sandbox --use-gl=disabled --disable-gpu-vsync --disable-gpu-vsync --gpu-preferences=MAAAAAAAAADoAABwAAAAAAAAAAAAAAAAAABgAAAEAAAQAAAAAAAAAAAAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAA= --mojo-platform-channel-handle=2252 /prefetch:2
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1064
    • 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 --field-trial-handle=3364,i,8293235976513689021,7261015831736501466,262144 --variations-seed-version --mojo-platform-channel-handle=4112 /prefetch:8
      1⤵
        PID:1408
      • C:\Windows\System32\CompPkgSrv.exe
        C:\Windows\System32\CompPkgSrv.exe -Embedding
        1⤵
          PID:3964

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Roaming\Better Kirka Client\2b51b023-6a46-40a0-98c7-8dfcd0d1f472.tmp

          Filesize

          1KB

          MD5

          dfcd422f52b7aa58644cacb3e8f83944

          SHA1

          bfb24d0be8683e01e3c537e80882ed481089534c

          SHA256

          ef83fbfc28085407108abf903bbb404e7222d7509f48d4a709f812820adcd7a1

          SHA512

          b5d7c7b4b1865e5c54009ec5997b7178e793923309b478baa3f0f141361c744cdba70c033ac76f9fde2fe18b71202444582c870784965b6ffc48585a4831e18e

        • C:\Users\Admin\AppData\Roaming\Better Kirka Client\Code Cache\js\index-dir\temp-index

          Filesize

          408B

          MD5

          bf34ffe255041e4737bdb0a850fc1aee

          SHA1

          97ab510dbf0fb41cb735c306f183f14528205c44

          SHA256

          ab48bf21f43c6c86fb58e1d3bd22f4a3c29de06dc30a81aeacd12d2bf817810b

          SHA512

          99b70ea39e063b7031a91b056e8abdc7c79dc4b4012bbc8129a47f8a56008570122f2ebdd4dd6c92d20f35e7230da1aa4192ae7597d94faa4c43439dbdfaa02f

        • C:\Users\Admin\AppData\Roaming\Better Kirka Client\Code Cache\js\index-dir\the-real-index

          Filesize

          48B

          MD5

          2ccc641e3acff08a51331eae392c87f1

          SHA1

          6eae4c54fa0102585aaae80fd4e59547f6aad5be

          SHA256

          29021537574ec486e121f2a2563adbacb81a314c59e581869d44458b84181439

          SHA512

          469b6a2a74b5ea84df9d440a869d394146d9c9155b4c47b02dbbb5769cf058c36c83ee91ad13d028475915e4133e2ee7743e8f3ad26f90deb9f70c0d82ff1e97

        • C:\Users\Admin\AppData\Roaming\Better Kirka Client\Network Persistent State~RFe59b423.TMP

          Filesize

          59B

          MD5

          2800881c775077e1c4b6e06bf4676de4

          SHA1

          2873631068c8b3b9495638c865915be822442c8b

          SHA256

          226eec4486509917aa336afebd6ff65777b75b65f1fb06891d2a857a9421a974

          SHA512

          e342407ab65cc68f1b3fd706cd0a37680a0864ffd30a6539730180ede2cdcd732cc97ae0b9ef7db12da5c0f83e429df0840dbf7596aca859a0301665e517377b

        • C:\Users\Admin\AppData\Roaming\Better Kirka Client\Preferences

          Filesize

          57B

          MD5

          58127c59cb9e1da127904c341d15372b

          SHA1

          62445484661d8036ce9788baeaba31d204e9a5fc

          SHA256

          be4b8924ab38e8acf350e6e3b9f1f63a1a94952d8002759acd6946c4d5d0b5de

          SHA512

          8d1815b277a93ad590ff79b6f52c576cf920c38c4353c24193f707d66884c942f39ff3989530055d2fade540ade243b41b6eb03cd0cc361c3b5d514cca28b50a

        • C:\Users\Admin\AppData\Roaming\Better Kirka Client\Session Storage\CURRENT

          Filesize

          16B

          MD5

          46295cac801e5d4857d09837238a6394

          SHA1

          44e0fa1b517dbf802b18faf0785eeea6ac51594b

          SHA256

          0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443

          SHA512

          8969402593f927350e2ceb4b5bc2a277f3754697c1961e3d6237da322257fbab42909e1a742e22223447f3a4805f8d8ef525432a7c3515a549e984d3eff72b23

        • C:\Users\Admin\AppData\Roaming\Better Kirka Client\config.json

          Filesize

          23B

          MD5

          af84118d679c1a9968a22ecb6afbaf24

          SHA1

          a479a902905529bcce15f9e8e5bea99453116ba9

          SHA256

          b686ff0930f13fae7facbcf6f83448cacaf438fc04d6f1098a71817fd308015a

          SHA512

          5d6f5331cc5f7f2dc1698d7875a0c7f9b5ebd637466cc9347a7ca36381542b3108336b4321c6f5521fc386081047134ce943d0ec8d1154c2fd9d059c63f3a364

        • C:\Users\Admin\AppData\Roaming\Better Kirka Client\config.json

          Filesize

          43B

          MD5

          9288d8b06fc5786a690189060d8d10c4

          SHA1

          19707bacf2991dc5fa1c341a3e277325159e7cd8

          SHA256

          34e31d640274c5f8dd614eb1c3b288ffa732ce1492ffea6cf84fbe81054e4df6

          SHA512

          1df44496152d1e78aebca7f1ccbf7d2671bbd37f08d33d114cf10f546f6cd732a60499d4dd1b4ef567afc14e642cb81e06f050f7cb4891945a35804691ff0140

        • C:\Users\Admin\AppData\Roaming\Better Kirka Client\config.json

          Filesize

          62B

          MD5

          a5ed342290d686a345c72fdeb90813b0

          SHA1

          3f9200fe399345128cbddc930813760dfd6c5862

          SHA256

          6ee7e21e3e8352dcc9816fb4ddf6692a5bd13002980d009ef678c37e2891bcdb

          SHA512

          448b61df326da596961fcf31f03f7eefb613244a0b7ffa9b898a7aac5920175621563e08165bfeb78e495fb9f7d810387c7062c6314b50d0150fd7ef138fb13b

        • C:\Users\Admin\AppData\Roaming\Better Kirka Client\config.json

          Filesize

          78B

          MD5

          1bf5665406158501d1478fe73d4efb06

          SHA1

          64a2007743f0ed3a8ce1743a6b913872ceb0da4b

          SHA256

          b8716403e6403c120528a4f1b93e7232162d6c858653b55e0ef2ba10836f20de

          SHA512

          c626761198cd031243568f3579585f93eff746e5f174917ae55bc9d155affc7a5a60498b128d68711a85b9675207c42571bb80523df9d11fe2a3f749874420dc

        • C:\Users\Admin\AppData\Roaming\Better Kirka Client\config.json

          Filesize

          102B

          MD5

          7388f5df0e43483b802bccd7f8372c8d

          SHA1

          79775eeccb27be6de166f13c4e2970c47c4f3638

          SHA256

          279ab36a69053eb7e994ae2cd5bdd1176ece3abd2d0e0bc91b545461d1b4260f

          SHA512

          9dc1576f60e8c7f88ff2b164f5f25cc5fd2ba6639760648d428f680906fcb881e88995a0a58072ae493c3a43e9767dc65a92d554e034d9a8e1003f09645d352f

        • C:\Users\Admin\AppData\Roaming\Better Kirka Client\en-US-9-0.bdic

          Filesize

          441KB

          MD5

          a78ad14e77147e7de3647e61964c0335

          SHA1

          cecc3dd41f4cea0192b24300c71e1911bd4fce45

          SHA256

          0d6803758ff8f87081fafd62e90f0950dfb2dd7991e9607fe76a8f92d0e893fa

          SHA512

          dde24d5ad50d68fc91e9e325d31e66ef8f624b6bb3a07d14ffed1104d3ab5f4ef1d7969a5cde0dfbb19cb31c506f7de97af67c2f244f7e7e8e10648ea8321101

        • memory/2388-2-0x00007FF855150000-0x00007FF855151000-memory.dmp

          Filesize

          4KB