Analysis

  • max time kernel
    145s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/02/2024, 03:05

General

  • Target
    8b3be38a0114354f7221207f53bb1730.exe
  • Size 751KB
  • Sample240203-dk835shhfm
  • SHA256 891b3003f9accd1d8d7b6bb5f9b649805220b969f9f37d6a79bbabcdc277c0ab
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Renames multiple (5574) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Drops startup file 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Drops autorun.inf file 1 TTPs 3 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8b3be38a0114354f7221207f53bb1730.exe
    "C:\Users\Admin\AppData\Local\Temp\8b3be38a0114354f7221207f53bb1730.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops startup file
    • Enumerates connected drives
    • Drops autorun.inf file
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:2956
    • C:\Windows\SysWOW64\HelpMe.exe
      C:\Windows\system32\HelpMe.exe
      2⤵
      • Modifies WinLogon for persistence
      • Drops startup file
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops autorun.inf file
      • Drops file in System32 directory
      PID:4936

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        desktop.ini.exe

        • Path C:\$Recycle.Bin\S-1-5-21-3803511929-1339359695-2191195476-1000\desktop.ini.exe
        • Size 752KB
        • SHA256 4927ff257e00ddbc619c02a13e1905fbbf5c32857b9921410be51d0c83df9413
        • MD5 SHA1 SHA512 SSDEEP

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 0e2e9b4e63bd6b87b3819dd0b5eb2a3f1a3da97e7f164bdc92ac4375ab215282
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 e15c077b7815a5c83fd10f4124693dba559302d7bbb3e53835eaebc730869581
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 c3703e3e767c0299a370fcfaf263bb40376bdba3bb51cc160c75d6ad6ff749a1
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 abb4abaf01ff022519e1d2aea9159e8ef6494b4542433c57bff3b657f24ff3e7
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 750d0456978272a2a5673ab72d1ccdf9204e42d299e56e2e4604ada6670a416a
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 e02df094399c0e4d4f4a81f9e3b71100f0891c25c0f5c5ca1d2a9c53612a6375
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 37ccfe3cebbd76ed577ab34a751a8f693325025b9291c45eb9e151c49634bd5f
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 68c71f3dc25e4758ee0d1d8b3bdf2553fb2be3a4fc2ed612c2d5342855f9acaf
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 e6ea59a5e7bd2c46d9496ce708a9a45a176040b5e33949a8bc8be18927de117d
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 bea126ebc912f130a44de62a01150e6fd4d9863dfa8cf65b4dcc95fe79d3b2b2
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 857d8ce4ddf3399f4542c264330e792968d1b9dd46b46c746c71a4781b144a93
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 64b69aef3ab54ef3167e298331989d965f7123fd200dedf5fd63f0747580dfd2
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 7303a8e6a7d96395719b32c52b0f812ccdeacdf85f7ae21394092d60c9e8648c
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 ba32cb9094601471fdc1db8bcc80f5f36ca35849acf7d6c8825c521d0be5ea19
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 4b7a2bd341f081261e88eea962bd5a251004330d25d8bda9a1a037f0d2a1d2a8
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 0d44626f5345c29a23362e73720d26fed16b1dc4633431967a7854683fb40fdd
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 cd3c228ded8955916b1bf4abcfacea4a31604c949a47d81f8e10fc966f277228
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 fe51303608ab177bb9a6df198996931e61aae05031f7b87f5c645868dd9c202d
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 774d3a273b610340cddb7b794bdf791c548cba6ab87b9ac9bc1b71256ba91676
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 6fafcf6b8c80c75dc782fcb10c18fc86a658f03d1891be4bea83d17e98482e61
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 576e011e6d2cfaf3f21574fa4e7afb3ef6c3127d0932b43c8b52317f0da3d3d6
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 13990223b7265a0bca3a88f795ac7e5bd5a88c46045ac1c2f3290f76f087f281
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 e5d8ee8bb571714b53e1922faed8e7961fcf3894c214d8355d7123ad45cde772
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 f8e1d9c845e64d3cbc1465de0f42a99ce97c311553c6f3b7cbceff2dfc09758d
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 8a4cb9f85b0c777ba955d8074297e089beb28da055fb2abfbbcbf5eb297d36b0
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 775439174a8721b0bc3c0b72cc25f48017f2171329b74455398afa81a440bc34
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 55b4ce297e41b7a64299092ebbaa3161927bfe2c14a9b74a9e604370c386e298
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 fd619879ee03dd90c9f2e0bcd817f941f1563e5e402c13d8f0354822f2f3d814
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 139b96014b33439e05afada7b74e1988a2c3e703feaed5c43090c43ecc7253ee
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 ed21ce9628dc8de289e275efdba4280cc006be62b08574e8f58f902cb76d17fd
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 633419e207c4158f3043eb91ebc00673ea6aad9c0f10dc33f265e41e79ce66a3
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 09953e1dbae4925707bd1461406748420fda8586dfbb1903ad5ae6c7c5f7b1a5
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 1e8c5f7cffa6ca0c869c50e01a450a181351b870ca1c0478da7fbca9cef3ac8d
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 2afa31964e6417d8d44ad6a4b6a443447d931658c019e90565a1177dbcd68117
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 f7287f3a2e1555951f2fe2b5a5ade96d828fe5454353ad37b022f20ab50e968b
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 91d639f42e766db3a62b6210b212a595d3bc54fd91fec0650b4c94b9b07c7d0d
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 499a9234142e653c82d38282060acd0e8db62cedc9c303eb29c431f9fd26c2ca
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 5f6b5ae2687a1d114d388ba65e1b8c139bd8e150c324f5eae3185f9931f1729a
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 b0069027bdc616f7ba5262c4d4fbfa4ca24dd377b1e2ae6cc2057b0e20144750
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 da33c15fb35eb729e8bf5115266ef6e7e86c49b53779e542b092afbacc760655
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 a0615ece40c9ff6458a971f8ab6662c58ce8fee4df5a4ec1564f4f35365a71ee
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 c0d7e8709d82cecf0f9a8f3c20159533619f9e7e7b6d55ee4c77fa3863b7f3d9
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 5117f583d5076aeab297d50564520a3de8c26d4022489fb1611c97be797d36c2
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 695d8e22ba36cad397c3cebab99d03722939d2f1359d9e02ca774799329fd6c5
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 fe6682849f7ec2d134cb0487009cc85af4daa4dadc2283b6c361c8a827df8b04
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 85c5cf96591a2d80600e4181db333c1ce4d6359f287d470d5eb6e823b30483e5
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 d6acb4cbbcd6c322adbb3294a54a6c51e958d8ee2fac63bee931fcc1839887e1
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 855fc00b5a8fb4961fb84de39c7a90f58e524493f46edf1c0b89e55c00b8f0e1
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 636836d9084a4d4c163cf5fb2b4e313ecf6b8e2cf67e67639e5667e2f3b7f422
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1KB
        • SHA256 d568b761ce5d5a91698f4287a375d055e50d4cf932ea4beff93b2c67e2577e09
        • MD5 SHA1 SHA512

        Soft.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk
        • Size 1023B
        • SHA256 5d4d91ff9500f8b26676721d5460a6c02eceeb83249e935dbaf13497a5339af3
        • MD5 SHA1 SHA512

        HelpMe.exe

        • Path C:\Windows\SysWOW64\HelpMe.exe
        • Size 751KB
        • SHA256 fbb5cbdcb8496cf03d75af0bbc955f02393a414350e774f5b82c821a91e3cfd4
        • MD5 SHA1 SHA512 SSDEEP

        desktop.ini.exe

        • Path F:\$RECYCLE.BIN\S-1-5-21-3803511929-1339359695-2191195476-1000\desktop.ini.exe
        • Size 752KB
        • SHA256 39de7f38b784e389f47d772f7186864f43798f64a0136917e7725f70567649b3
        • MD5 SHA1 SHA512 SSDEEP

        AUTORUN.INF

        • Path F:\AUTORUN.INF
        • Size 145B
        • SHA256 cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae
        • MD5 SHA1 SHA512

        AutoRun.exe

        • Path F:\AutoRun.exe
        • Size 751KB
        • SHA256 891b3003f9accd1d8d7b6bb5f9b649805220b969f9f37d6a79bbabcdc277c0ab
        • MD5 SHA1 SHA512 SSDEEP

        memory/2956-0-0x0000000002320000-0x0000000002321000-memory.dmp

        memory/2956-7225-0x0000000002320000-0x0000000002321000-memory.dmp

        memory/4936-5-0x0000000000650000-0x0000000000651000-memory.dmp