Analysis

  • max time kernel
    140s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-08-2024 12:26

General

  • Target

    wuzhipiSetup_zz.exe

  • Size

    1.3MB

  • MD5

    b304a660f426411983cb9107e03369f4

  • SHA1

    55223fe9b364710f924c2a1db301395260bae7d0

  • SHA256

    f3eb69361c430b41863940b66bb99c204ba8fa5192da66bfa2d7a763293ea007

  • SHA512

    98774eda0ccc5a7a014d2a97c0879e1aa1a1fe6b97d05c32eba0a2e9898c35407eca72aa565698109e0847b21e3d0ed0052526464e3ec5b91e8bf154ca0b50bb

  • SSDEEP

    24576:HMGW6i7Ql9nwvB8GDt+gEALJN6eCk1Rj/dn+derXJXsBe:sGvRneDtFLJN6deRj/dnCg4e

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 19 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Drops file in Program Files directory 23 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies Internet Explorer settings 1 TTPs 39 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\wuzhipiSetup_zz.exe
    "C:\Users\Admin\AppData\Local\Temp\wuzhipiSetup_zz.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:5636
    • C:\Windows\SysWOW64\mshta.exe
      mshta vbscript:createobject("wscript.shell").run("""iexplore""http://cnzz.sjt8.com/info.access/?stat_zz",0)(window.close)
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3844
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe" http://cnzz.sjt8.com/info.access/?stat_zz
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:5776
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:5776 CREDAT:17410 /prefetch:2
          4⤵
          • System Location Discovery: System Language Discovery
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:3600
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c echo %time%>>"C:\Program Files\ddsp22700.exe"
      2⤵
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      PID:2408
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c del "%ALLUSERSPROFILE%\¡¸¿ªÊ¼¡¹²Ëµ¥\³ÌÐò\Æô¶¯\*.*" /f
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1496
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c del "%USERPROFILE%\¡¸¿ªÊ¼¡¹²Ëµ¥\³ÌÐò\Æô¶¯\*.*" /f
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4836
  • 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=4128,i,2904906934812054273,11716976550456127484,262144 --variations-seed-version --mojo-platform-channel-handle=944 /prefetch:8
    1⤵
      PID:4088

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Program Files\27291200\bat.txt

      Filesize

      210KB

      MD5

      1e2a2c13c919e2e37baed9fa1bbebfc1

      SHA1

      f7c3493e55444468c3f3fcc1e8def188b04d5806

      SHA256

      32f9ec77f9be3b6a50494aa748b003df1e6efeeccd9ba35d427a8670926d77b8

      SHA512

      bdeeeefe56e2a840a9148c577e0441469d21c42a4bce5d25e88b6a173604e3313b685c413a528bc811d20541b0ea9be8ea38e8780cd05d4e6db047c997225602

    • C:\Program Files\date2700\IeUpdate.exe

      Filesize

      1.4MB

      MD5

      548f8a2766a9c75c9c43c5d583e80d34

      SHA1

      0259de3e8fe1e5d99bae06aa65253d1e7cc1419f

      SHA256

      a4eee83f86d97bfe06b96c9fea3228f392bd5d1c1ea05499bfa26956dc039dcc

      SHA512

      4324f721690ccc8ef62f2ac27a45717c0892f7747695e4800300c497c04b60dae0e3194c4ea5fafdfeb72f94665f31d97e3bf5f6c142f32d14bf3207eaa5e26d

    • C:\Program Files\date2700\IeUpdate.ini

      Filesize

      8KB

      MD5

      15e61fdd1647b29f49d44a175d82bec0

      SHA1

      d3660eb43a55b8512121828bf7240c588d9df6ce

      SHA256

      4339a4762e3ce492c42038914349052386ea2c072295358e341d6f74f52e9f7a

      SHA512

      453cf8e87986a82a9028b79bb3946fce57e20703eac2769901a95328a7b910f001d82935805ec71dbb5b5916ada80de8752be705abb21851fbd00fa959911fd6

    • C:\Program Files\ddsp22700.exe

      Filesize

      13B

      MD5

      cf3314eb14baca143dcd740dee910ac8

      SHA1

      1a320913ee21a31ab44f8d2813eec8e1c64d34eb

      SHA256

      af42fd905b9cf5c22d47aee0f88d6b828ac66eaf395075d010ec22f544c00cf9

      SHA512

      60699709a6800d8d5a07903ad38c8af8c9b335b4a20b66c61e633ffca720e6f0e3268b5ecbd812693a7308bbdd44a24775b3a732acacfd3dae4cb22fcb7db62b

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

      Filesize

      471B

      MD5

      78dd7aa55c0c7da0138262505cb3fbbe

      SHA1

      c6e55ab94f24eacf76b4ef234258c85c0238dacd

      SHA256

      2fdd4c22f46612300ae87bb1df6ffd303bb5f30c1c078f3d0ef20ba1ea7c55b0

      SHA512

      b961555235562fd84ab682d8abe9afa5fe26a4e7f99fd1bcb83bbfff8775d6d593e2967cf8aedfcc6f335cce216d115bb084f3a3d813c5f92b1fe15d98cccf45

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

      Filesize

      404B

      MD5

      7e43d6c4ede56b1bdb5e5c96a62fd071

      SHA1

      fc76dfdfafa1c2db133a5572278e4e377a9035fa

      SHA256

      5af3038db6744d80775f0d5b8df5d9dda230bd13ab094747bd088bdb3e5719fa

      SHA512

      892135153f2e73af6832548c4aa05e79c7e1013502b45749adf91ea5443d5c2ad37f9f80a15e37896917cb57570d3e9b175b3fff93b4609eac07a2b33e3102c0

    • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verFE02.tmp

      Filesize

      15KB

      MD5

      1a545d0052b581fbb2ab4c52133846bc

      SHA1

      62f3266a9b9925cd6d98658b92adec673cbe3dd3

      SHA256

      557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

      SHA512

      bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\BKKBWXOR\suggestions[1].en-US

      Filesize

      17KB

      MD5

      5a34cb996293fde2cb7a4ac89587393a

      SHA1

      3c96c993500690d1a77873cd62bc639b3a10653f

      SHA256

      c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

      SHA512

      e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

    • C:\Users\Admin\AppData\Local\Temp\nst7FAC.tmp\NSISdl.dll

      Filesize

      14KB

      MD5

      254f13dfd61c5b7d2119eb2550491e1d

      SHA1

      5083f6804ee3475f3698ab9e68611b0128e22fd6

      SHA256

      fd0e8be2135f3d326b65520383a3468c3983fa32c9c93594d986b16709d80f28

      SHA512

      fcef8ac5bd0ee6e316dbbc128a223ba18c8bf85a8d253e0c0877af6a4f686a20b08d34e5a426e2be5045962b391b8073769253a4d9b18616febc8133ccf654f7

    • C:\Users\Admin\AppData\Local\Temp\nst7FAC.tmp\System.dll

      Filesize

      11KB

      MD5

      00a0194c20ee912257df53bfe258ee4a

      SHA1

      d7b4e319bc5119024690dc8230b9cc919b1b86b2

      SHA256

      dc4da2ccadb11099076926b02764b2b44ad8f97cd32337421a4cc21a3f5448f3

      SHA512

      3b38a2c17996c3b77ebf7b858a6c37415615e756792132878d8eddbd13cb06710b7da0e8b58104768f8e475fc93e8b44b3b1ab6f70ddf52edee111aaf5ef5667

    • C:\Users\Admin\AppData\Local\Temp\nst7FAC.tmp\nsExec.dll

      Filesize

      6KB

      MD5

      e54eb27fb5048964e8d1ec7a1f72334b

      SHA1

      2b76d7aedafd724de96532b00fbc6c7c370e4609

      SHA256

      ff00f5f7b8d6ca6a79aebd08f9625a5579affcd09f3a25fdf728a7942527a824

      SHA512

      c9ddd19484a6218f926295a88f8776aff6c0a98565714290485f9b3b53e7b673724946defed0207064d6ab0b1baa7cb3477952f61dbe22947238d3f5802fa4f4