Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250619-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250619-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/07/2025, 12:10

General

  • Target

    2025-07-04_e4f2b20c2d84e8ef419ab9ba32fb83f1_elex_stop_yuner.exe

  • Size

    512KB

  • MD5

    e4f2b20c2d84e8ef419ab9ba32fb83f1

  • SHA1

    618b1abec54f8caf96a6f0f42ab573503bc53d34

  • SHA256

    54a6787cd14f35878b8f641433b6afc2f36fe44ce03682c589dc524fbf422748

  • SHA512

    90e6eed0f99f0e72da4b3de251fe53e382820f687ab511ee799384fcac5643e97446de93b8d1795426a0ac49fc4824bb66cf63ddc1de96fdd46a5b6ddbc45e6d

  • SSDEEP

    6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj67:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm5Q

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 5 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 5 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Windows security modification 2 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Enumerates connected drives 3 TTPs 64 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Modifies WinLogon 2 TTPs 2 IoCs
  • AutoIT Executable 10 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 12 IoCs
  • Drops file in Program Files directory 15 IoCs
  • Drops file in Windows directory 19 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.

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 20 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 18 IoCs
  • Suspicious use of SendNotifyMessage 18 IoCs
  • Suspicious use of SetWindowsHookEx 17 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-07-04_e4f2b20c2d84e8ef419ab9ba32fb83f1_elex_stop_yuner.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-07-04_e4f2b20c2d84e8ef419ab9ba32fb83f1_elex_stop_yuner.exe"
    1⤵
    • Checks computer location settings
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:3596
    • C:\Windows\SysWOW64\zrwfsugrvu.exe
      zrwfsugrvu.exe
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Windows security modification
      • Enumerates connected drives
      • Modifies WinLogon
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:4216
      • C:\Windows\SysWOW64\pxypyxpv.exe
        C:\Windows\system32\pxypyxpv.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4796
    • C:\Windows\SysWOW64\advbjfyjjgedrdx.exe
      advbjfyjjgedrdx.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:5240
    • C:\Windows\SysWOW64\pxypyxpv.exe
      pxypyxpv.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2644
    • C:\Windows\SysWOW64\wypvdpnasyjze.exe
      wypvdpnasyjze.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:3580
    • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
      "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Windows\mydoc.rtf" /o ""
      2⤵
      • Drops file in Windows directory
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:3584
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c advbjfyjjgedrdx.exe
    1⤵
      PID:1132
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c zrwfsugrvu.exe
      1⤵
        PID:3972
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c wypvdpnasyjze.exe
        1⤵
          PID:3496

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              • C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe

                Filesize

                512KB

                MD5

                87a9c39c2cad3ab22f0b90f621ba117f

                SHA1

                960bf6861950ae3d84a46f5adb35ffd44ecee47f

                SHA256

                f49fcf3c2f247c45e934604792f156d96bbd40fdfeaad0ad5ca62b26fc06e19d

                SHA512

                a62461d1ccd48f55ac34d747ef7d4f38524f98b9710484c27888a6f112f41f663764f47fb190df0f08ee9e5ea80a3c817b5512c507e48197491b486201cd998c

              • C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe

                Filesize

                512KB

                MD5

                bf3eef4d7de105407b87c7a7ecb4f9ee

                SHA1

                73a67d5d7631b61b3a828c565dddf81b18e1ccd6

                SHA256

                ebff9c09ce4d18fb3aa013f3183d73092600c98a4bce842e4e3e36abc2356e19

                SHA512

                7b88bcca01f70fafecac2a4ab6215e78371d433d16115b151684c877913ab506c0bfcdc975a5850da774c96d995dea90bd3d64d66ae4f42bba0971bf7952e92f

              • C:\Users\Admin\AppData\Local\Temp\TCDE7EF.tmp\sist02.xsl

                Filesize

                245KB

                MD5

                f883b260a8d67082ea895c14bf56dd56

                SHA1

                7954565c1f243d46ad3b1e2f1baf3281451fc14b

                SHA256

                ef4835db41a485b56c2ef0ff7094bc2350460573a686182bc45fd6613480e353

                SHA512

                d95924a499f32d9b4d9a7d298502181f9e9048c21dbe0496fa3c3279b263d6f7d594b859111a99b1a53bd248ee69b867d7b1768c42e1e40934e0b990f0ce051e

              • C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat

                Filesize

                48B

                MD5

                dea103b4fc24ce3df9ea6f828dfba54d

                SHA1

                d86716a534165c234af6f265b9bea0f41008535a

                SHA256

                67a453d4eb3a30cbdd441f09685f645c7ed2389ab81a3306dd8592bb5b8a9ef3

                SHA512

                a8f64f454eba7fa6c4e60de61a39c8ac73423c453c6009323abc331cc17a53b0a67f61fb50d3663d9eacfa7b69e73d4fedb0dee83dbee8fcc06d6afd7e193c42

              • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

                Filesize

                18KB

                MD5

                e98b5a0702f1b4beabdf19bb2a03ad58

                SHA1

                fb0088c1c4883b29031f66e6036b42bf7f08bdf7

                SHA256

                13ecaf099001e1eb9d7661db200fe75fa282fca8085e1c88ca84e1e232d911b0

                SHA512

                59e88c17f704c44d41df50f05ab52ef1a24ca1c2abef1d96541e2690e4a3eedbca8bca895c7d76768c76399dcb7f9aa2bc01b4f12a36ecd9a3878121ff6bb74a

              • C:\Users\Admin\AppData\Roaming\Microsoft\UProof\CUSTOM.DIC

                Filesize

                16B

                MD5

                d29962abc88624befc0135579ae485ec

                SHA1

                e40a6458296ec6a2427bcb280572d023a9862b31

                SHA256

                a91a702aab9b8dd722843d3d208a21bcfa6556dfc64e2ded63975de4511eb866

                SHA512

                4311e87d8d5559248d4174908817a4ddc917bf7378114435cf12da8ccb7a1542c851812afbaf7dc106771bdb2e2d05f52e7d0c50d110fc7fffe4395592492c2f

              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms

                Filesize

                24B

                MD5

                4fcb2a3ee025e4a10d21e1b154873fe2

                SHA1

                57658e2fa594b7d0b99d02e041d0f3418e58856b

                SHA256

                90bf6baa6f968a285f88620fbf91e1f5aa3e66e2bad50fd16f37913280ad8228

                SHA512

                4e85d48db8c0ee5c4dd4149ab01d33e4224456c3f3e3b0101544a5ca87a0d74b3ccd8c0509650008e2abed65efd1e140b1e65ae5215ab32de6f6a49c9d3ec3ff

              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms

                Filesize

                679B

                MD5

                9f25e5a5e5f7aed915916464012e259b

                SHA1

                a82a7816a7548140eebfc2a3969643be1fbd303b

                SHA256

                6b251cb2ca19d6ef7e31f9080228cdeb2fe1e3c597da36108ae7b4a74dfc528a

                SHA512

                c695001e72a2fbe4a83a8fa04efaa7a7af672829af4e6aaec5f527a9362cdefe170a465ec9c3465074858873ed9bb72c272e7c449e5703b0f8beef62b617c145

              • C:\Windows\SysWOW64\advbjfyjjgedrdx.exe

                Filesize

                512KB

                MD5

                60ebd55d0ebb38713d9212ca01544b23

                SHA1

                2ab5d99029fa52d78117a6cf2a95afcc85ed431a

                SHA256

                36be67bbd74ac3cf148cc6d776c1bbe3dfdfc584e40104b3a09b575d3f3a8a8d

                SHA512

                7d1cf4275909c4491137706936a0320c4b8039a78d64b82d3ec96b13b7e65f6f7e8280daae2d23eeec3bb6ec0b1481ea191ac0e304b761d0a4baf24c0c65f054

              • C:\Windows\SysWOW64\pxypyxpv.exe

                Filesize

                512KB

                MD5

                25166a3fb4cdc1e4f9826f60438b52ef

                SHA1

                33b73eca3d08d00661e47c2d9367a4a222757a74

                SHA256

                7a243e8fdb2aed13629eb9b6cbf9e123584a83dde92e828050dcc621a7e9dfe5

                SHA512

                6ba7bdd1861d4cbdfff4d2bd6db9149208731ee7cceb4a015ad428e7e55dcc5097ab2dc566df489aa83d3a30b1d1aa9b313f19d78956d6b5bc4f01239fe89bc0

              • C:\Windows\SysWOW64\wypvdpnasyjze.exe

                Filesize

                512KB

                MD5

                c13bac1b087fab658456b1ff7dd5540f

                SHA1

                52cf0af389aa6845d5f615e0cb0c80d4729c5095

                SHA256

                d477fe329b7f96238b9df8e101ab493bcebc2a31197303e22cf9f1099d577829

                SHA512

                6d7a0829c906a0b46371cb254fdc74d1ce898d2e06bb0b18e1561eb0f45bd9949534f343c50ef162690c94eec1f25424cc03b22a37737426a5dfa78c2ff579d8

              • C:\Windows\SysWOW64\zrwfsugrvu.exe

                Filesize

                512KB

                MD5

                95bbf8240179fe090a4502665e226b2a

                SHA1

                7884d54342c22b0fd6bb82053d4f5741ab79b103

                SHA256

                c00f67f83167b1be6e872db7aa19d26f93ac1eda58e79b7cfa1007bbe02c550f

                SHA512

                b5e58f49c2c6e397ebe6d0cbd7b82135a4805e34bb77f1d5540bc3445f9e88e4021b84f3ed28bc133263477d99a0fe39ec69e44a79d23160b1ba797458d1b5a9

              • C:\Windows\mydoc.rtf

                Filesize

                223B

                MD5

                06604e5941c126e2e7be02c5cd9f62ec

                SHA1

                4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

                SHA256

                85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

                SHA512

                803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

              • \??\c:\Users\Admin\Downloads\PushWrite.doc.exe

                Filesize

                512KB

                MD5

                e00232dd9685fcd0685e63f2f30b56b9

                SHA1

                c8dedc8ef41294ab68217a79815d5fd2fb9bc83d

                SHA256

                b35f40a7d6e395bb84f8fa3e487ec7c833badcdc78a3f080255afd9554d5ff12

                SHA512

                94ddc2647f335f6e210a3f3ed5b9f5dfc87550ddc3852fb85b6271cde75b13a9b24e5ccdee143321312721450269238e50b6e501f8fc3a128a4f6ba87056b1c5

              • \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe

                Filesize

                512KB

                MD5

                a49b971123c7d7e5fb3a81a676b99954

                SHA1

                04bfeca353a6f13b4fe4cd80fdee72fa104d4d96

                SHA256

                f28cbead27d2ed3c1190d1137e12a22a48894bfbad13275f26bce0f6b11fe350

                SHA512

                c39c257728d440ac9416fafd172be19617d1a4216b9b539b52cc3cfaf11966602ca76ab1df10ee1bbec6e4ed8ae843318ad71cdb01e977d7e2308547c061834e

              • \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe

                Filesize

                512KB

                MD5

                f0365909ca425d2cf1f21868a55f06af

                SHA1

                0107bf117703172e5a955d5930b56bd66c7e0544

                SHA256

                45c90907a5a3db230bf007c1dbb6259176f806697a50ba19b9902c612c58cb83

                SHA512

                a5369828f87ab4355631df08fcad105dc76fe79f45c02c076c6c4a2fa3144249d2777f3f4f5ed0c5c669b6f9cdca3473bce742fd9bb9f04ed43b3c6b7a9c36c0

              • memory/3584-618-0x00007FF99A650000-0x00007FF99A660000-memory.dmp

                Filesize

                64KB

              • memory/3584-43-0x00007FF9980F0000-0x00007FF998100000-memory.dmp

                Filesize

                64KB

              • memory/3584-42-0x00007FF9980F0000-0x00007FF998100000-memory.dmp

                Filesize

                64KB

              • memory/3584-39-0x00007FF99A650000-0x00007FF99A660000-memory.dmp

                Filesize

                64KB

              • memory/3584-38-0x00007FF99A650000-0x00007FF99A660000-memory.dmp

                Filesize

                64KB

              • memory/3584-37-0x00007FF99A650000-0x00007FF99A660000-memory.dmp

                Filesize

                64KB

              • memory/3584-36-0x00007FF99A650000-0x00007FF99A660000-memory.dmp

                Filesize

                64KB

              • memory/3584-35-0x00007FF99A650000-0x00007FF99A660000-memory.dmp

                Filesize

                64KB

              • memory/3584-617-0x00007FF99A650000-0x00007FF99A660000-memory.dmp

                Filesize

                64KB

              • memory/3584-620-0x00007FF99A650000-0x00007FF99A660000-memory.dmp

                Filesize

                64KB

              • memory/3584-619-0x00007FF99A650000-0x00007FF99A660000-memory.dmp

                Filesize

                64KB

              • memory/3596-0-0x0000000000400000-0x0000000000496000-memory.dmp

                Filesize

                600KB