General

  • Target
    KL-2026.exe
  • Size 81.2MB
  • Sample260718-x5ff4say7p
  • SHA256 2e0cc1e150d44c19a28246ad632d71efeae39ce1a71ff32be4707b2fb8303360
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • valleyrat_s2

Version
  • 1.0

C2
  • www.ijt1.com:80

  • ijt1.com:443

  • 127.0.0.1:80

Attributes
  • campaign_date

    2026. 7.17

Targets

    • Target
      KL-2026.exe
    • Size 81.2MB
    • SHA256 2e0cc1e150d44c19a28246ad632d71efeae39ce1a71ff32be4707b2fb8303360
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Drops file in Drivers directory

    • Modifies Windows Firewall

    • Executes dropped EXE

    • Loads dropped DLL

    • Prevents Microsoft Defender from scanning certain paths by adding an exclusion.

      Uses the Powershell Add-MpPreference cmdlet to exclude paths from being scanned by Microsoft Defender.

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Network Service Discovery

      Attempt to gather information on host's network.

    • Drops file in System32 directory

    • Target
      $PLUGINSDIR/InstallOptions.dll
    • Size 32KB
    • SHA256 657672be6ea8a72fb4765074cfda019fb8fa4eacb3238a416c186f53919d7cf4
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      $PLUGINSDIR/System.dll
    • Size 28KB
    • SHA256 b89448b9fd7be5ef215cac6d973a57c0e75e1fffa25552afe174855c9b71fdf9
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      Microsoft.exe
    • Size 519KB
    • SHA256 e4a6acc09b909fa4da2a112b56bc33c5c96447dd38477d7cde69182118748ecb
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Modifies Windows Firewall

    • Prevents Microsoft Defender from scanning certain paths by adding an exclusion.

      Uses the Powershell Add-MpPreference cmdlet to exclude paths from being scanned by Microsoft Defender.

    • Drops file in System32 directory

    • Target
      api-ms-win-core-console-l1-1-0.dll
    • Size 11KB
    • SHA256 0dd2878a9aad0d1a64848db4a1b4e3851fd5bf049c4ba5b726d114ff45fd947a
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-datetime-l1-1-0.dll
    • Size 11KB
    • SHA256 289ea86da94de73f0f0de4812caf7eda170ee612c72a713b3036b2669813d15a
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-debug-l1-1-0.dll
    • Size 11KB
    • SHA256 9487da37a92b40720ea2ad64ea0c9adc8b3c7bc4fe1f63a0e03e9c7a18943565
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-errorhandling-l1-1-0.dll
    • Size 11KB
    • SHA256 9cc0615a94b0a320f4b675eccbc3f7b8c279d9f692165afc6ce0c877f3981b08
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-file-l1-1-0.dll
    • Size 14KB
    • SHA256 4b2dc152f33cd7d88beba8696a57cd0383f05c50d2fb63672664717766762a1d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-file-l1-2-0.dll
    • Size 11KB
    • SHA256 568d7f8551d8b4199db3359d5145bc4cb01d6d2f1347547f47967eb06a45c3b5
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-file-l2-1-0.dll
    • Size 11KB
    • SHA256 c1bca1bb524c5ae3d877a099f469b6fc34288bab26ae7a7f4fc47cd869f4958d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-handle-l1-1-0.dll
    • Size 11KB
    • SHA256 85546a616d5594b884146aa4e13cdbfe841c9d956e648c6ee4840e6f4428bdcd
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-heap-l1-1-0.dll
    • Size 11KB
    • SHA256 8434510e84f5ade3453cfe086ed08260d309f761ed922bb8ff9ed436d8575d82
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-interlocked-l1-1-0.dll
    • Size 11KB
    • SHA256 75b8eae29ab9acc906aafac2a198fe875d34c22b40acace1cd6c3486d67333ef
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-libraryloader-l1-1-0.dll
    • Size 11KB
    • SHA256 27078ba4e79087a5c1146f35da386ce043a3c2bbcaed04bd82645eddb6ed896d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-localization-l1-2-0.dll
    • Size 13KB
    • SHA256 13471eb84db95f8270398ef1deb29f0ea024db17e331497545c36eea7b2a3a7c
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-memory-l1-1-0.dll
    • Size 11KB
    • SHA256 d70eb06ed4f0c686dda93f35f065ec5e6249e5c737a24249738314c31f9d5202
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-namedpipe-l1-1-0.dll
    • Size 11KB
    • SHA256 36c42192283f129ff5637a06b7c3d72e5ed8e1c77493623384f2bdac15118f29
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-processenvironment-l1-1-0.dll
    • Size 12KB
    • SHA256 0d10d132cd28b57fb88135d5693ba2c1aace2fc059d85bde0318fb9b379b57b7
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-processthreads-l1-1-0.dll
    • Size 13KB
    • SHA256 28dd68501f527be6bc54f5f374bc33be983ea7ac640e66e3a56272cd3b9a5655
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-processthreads-l1-1-1.dll
    • Size 11KB
    • SHA256 b5f815d0a41add7fd9593036a8e6843fcc221298fefd61808f960eed3cc19830
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-profile-l1-1-0.dll
    • Size 10KB
    • SHA256 3902aff11857535698367d4db2dfccde6168429defac82c15a535b4a07f7cdda
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-rtlsupport-l1-1-0.dll
    • Size 10KB
    • SHA256 db1622a0b0013991d759c7955454a8006aa27f81a8b9b5c37cf2595b15b1b217
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-string-l1-1-0.dll
    • Size 11KB
    • SHA256 7bf7ff35fbcbfc1cb57597acfb23d2fb13e04e14906f4a626e4e92d689f19cbc
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-synch-l1-1-0.dll
    • Size 13KB
    • SHA256 1ff0d9ceff0f982b7a78ef34c45980b88099067f4468f11fcdd46dbac00f6dd6
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-synch-l1-2-0.dll
    • Size 11KB
    • SHA256 e1a87d7d01e2376dde81a16658915ccf2ecb692739fef09adfb962523756e22d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-sysinfo-l1-1-0.dll
    • Size 12KB
    • SHA256 b31a83c8cc984c2a7ed9d7c9964f8ba302c1051bc478a3a34b98f4f873a6c011
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      api-ms-win-core-timezone-l1-1-0.dll
    • Size 11KB
    • SHA256 f1667bbda1b58fc688b422fd2f9f7040919c4ababe00a4be78b258cae2dfc3d3
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10

MITRE ATT&CK Enterprise v16

Tasks

static1

Score
5/10

behavioral1

backdoordefense_evasiondiscoveryexecutionvalleyrat_s2persistenceprivilege_escalationspywaretrojan
Score
10/10

behavioral2

backdoordefense_evasiondiscoveryexecutionvalleyrat_s2persistenceprivilege_escalationspywaretrojan
Score
10/10

behavioral3

discovery
Score
3/10

behavioral4

discovery
Score
3/10

behavioral5

discovery
Score
3/10

behavioral6

discovery
Score
3/10

behavioral7

backdoordefense_evasiondiscoveryexecutionvalleyrat_s2persistenceprivilege_escalation
Score
10/10

behavioral8

backdoordefense_evasiondiscoveryexecutionvalleyrat_s2persistenceprivilege_escalation
Score
10/10

behavioral9

discovery
Score
3/10

behavioral10

discovery
Score
3/10

behavioral11

discovery
Score
3/10

behavioral12

discovery
Score
3/10

behavioral13

discovery
Score
3/10

behavioral14

discovery
Score
3/10

behavioral15

discovery
Score
3/10

behavioral16

discovery
Score
3/10

behavioral17

discovery
Score
3/10

behavioral18

discovery
Score
3/10

behavioral19

discovery
Score
3/10

behavioral20

discovery
Score
3/10

behavioral21

discovery
Score
3/10

behavioral22

discovery
Score
3/10

behavioral23

discovery
Score
3/10

behavioral24

discovery
Score
3/10

behavioral25

discovery
Score
3/10

behavioral26

discovery
Score
3/10

behavioral27

discovery
Score
3/10

behavioral28

discovery
Score
3/10

behavioral29

discovery
Score
3/10

behavioral30

discovery
Score
3/10

behavioral31

discovery
Score
3/10

behavioral32

discovery
Score
3/10