Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-01-2025 07:16

General

  • Target

    PO#6100008 Jan04.02.2024.Xls.js

  • Size

    955KB

  • MD5

    46585cfdb357b9c32e0aed02376dea2c

  • SHA1

    3525ccecb41582261ba6401d34b56cfdb7ec0d1e

  • SHA256

    b7e9e72922bbafab57989a81d72e1dee75ae384bd975cce8a707417cc1df725a

  • SHA512

    52b9a853aec1268ed4304a3712a50a59d12ae4777eb5108920b7e8518ee6800449597d43a29fc73e33e4e3375c8a9fc99e55c7a47b54bed03aea7ef48e238929

  • SSDEEP

    6144:nj8EnXTkIEmXTSPAKujxQ2ZFnQsa45Z44HQ6YGhz00KY6RRs44lEhc6cgPEtcExS:nwmsGKcdssa474tYR0rGlfcEo

Malware Config

Extracted

Family

strrat

C2

chongmei33.publicvm.com:44662

chongmei33.myddns.rocks:44662

Attributes
  • license_id

    khonsari

  • plugins_url

    http://jbfrost.live/strigoi/server/?hwid=1&lid=m&ht=5

  • scheduled_task

    true

  • secondary_startup

    true

  • startup

    true

Extracted

Family

wshrat

C2

http://chongmei33.myddns.rocks:7044

Signatures

  • STRRAT

    STRRAT is a remote access tool than can steal credentials and log keystrokes.

  • Strrat family
  • WSHRAT

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

  • Wshrat family
  • Blocklisted process makes network request 26 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Drops startup file 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Script User-Agent 26 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\PO#6100008 Jan04.02.2024.Xls.js"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:840
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\adobe.js"
      2⤵
      • Checks computer location settings
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4728
      • C:\Program Files\Java\jre-1.8\bin\javaw.exe
        "C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Local\Temp\TZQ.jar"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:548
        • C:\Program Files\Java\jre-1.8\bin\java.exe
          "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\TZQ.jar"
          4⤵
          • Drops startup file
          • Adds Run key to start application
          • Suspicious use of WriteProcessMemory
          PID:2224
          • C:\Windows\SYSTEM32\cmd.exe
            cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\TZQ.jar"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:4984
            • C:\Windows\system32\schtasks.exe
              schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\TZQ.jar"
              6⤵
              • Scheduled Task/Job: Scheduled Task
              PID:4012
          • C:\Program Files\Java\jre-1.8\bin\java.exe
            "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\TZQ.jar"
            5⤵
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:2716
            • C:\Windows\SYSTEM32\cmd.exe
              cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:4592
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
                7⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:3672
            • C:\Windows\SYSTEM32\cmd.exe
              cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:4524
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list
                7⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:2516
            • C:\Windows\SYSTEM32\cmd.exe
              cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:4392
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
                7⤵
                  PID:5064
              • C:\Windows\SYSTEM32\cmd.exe
                cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list"
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:840
                • C:\Windows\System32\Wbem\WMIC.exe
                  wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
                  7⤵
                    PID:2628
        • C:\Windows\System32\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\word.js"
          2⤵
          • Checks computer location settings
          • Drops startup file
          • Adds Run key to start application
          • Suspicious use of WriteProcessMemory
          PID:2680
          • C:\Windows\System32\wscript.exe
            "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\word.js"
            3⤵
            • Blocklisted process makes network request
            • Drops startup file
            • Adds Run key to start application
            PID:1744

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp

        Filesize

        46B

        MD5

        31fac590b0214be585fbb24bbb338e45

        SHA1

        16aeff7bca7cb8e82f89583978be3a79b5a839b5

        SHA256

        6f1cba0517b9f97e68003abd7554d8b5b12d934619cc361656a53fc797e476b4

        SHA512

        d2bc1ae948852b6ece60a06bede8a2a613b12dc714a189576b291a6fa0c4b8fbcbe2875dda3db4fdaba7b846762d4b2ca51c4c5730e88363fc061f20f424b995

      • C:\Users\Admin\AppData\Local\Temp\TZQ.jar

        Filesize

        265KB

        MD5

        49b06e70255a9d233ee47e15d9a2e23b

        SHA1

        a4c33ef1c39d7715216c27dc93d417c3eb3ec39e

        SHA256

        db396f9ae63eab45892eed0964926126301abaec49d356765b8cd181572551e5

        SHA512

        1ae0d43afaffb6ea57c493f8ab77b5b5bb2a74203cc5e9c0cb6256443f5f4095eb927d7e2ef276c24c91f7aa370dfd6903bc152a791f7ce69c91061d0c805e84

      • C:\Users\Admin\AppData\Local\Temp\adobe.js

        Filesize

        376KB

        MD5

        66557642aadcc9634d9fd1201d730ed7

        SHA1

        c0aeeaa215a04a1f87385dfa1395420969a40fa8

        SHA256

        6db12be58fe93da654afb1f98737e2e1fa05be9c3acce26413792cf30f9e482e

        SHA512

        820f7783339e77d6b2c3f308b0df3e56888216fee2d1aee099fb2e09dcbc4ec6926070976b8b948e56ab351c03052b34562ed406681f5cfe8aad92a8a90e66f3

      • C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna7778030477572574258.dll

        Filesize

        241KB

        MD5

        e02979ecd43bcc9061eb2b494ab5af50

        SHA1

        3122ac0e751660f646c73b10c4f79685aa65c545

        SHA256

        a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

        SHA512

        1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

      • C:\Users\Admin\AppData\Local\Temp\word.js

        Filesize

        305KB

        MD5

        7baf3694a88ff874e20a3d68a6c060d0

        SHA1

        fd9e22e3d52e0100dc963f776137cb6068e44825

        SHA256

        7693d4d8b365e1e7592dab1df24c67c133d0327a82cfab4f806f894b713b7847

        SHA512

        3ed74145253f5658ee8f253952dd0cbbf7f8f41cfe75a69f36bc954b3eb3a8c1b8bba66459ac3344214ac708aed16abe50be9899dd7b2ee3abc7bf89cc93c2a4

      • C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-3442511616-637977696-3186306149-1000\83aa4cc77f591dfc2374580bbd95f6ba_5ab270f5-f3a9-47d1-97d7-bbd50acf9955

        Filesize

        45B

        MD5

        c8366ae350e7019aefc9d1e6e6a498c6

        SHA1

        5731d8a3e6568a5f2dfbbc87e3db9637df280b61

        SHA256

        11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

        SHA512

        33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

      • C:\Users\Admin\lib\jna-5.5.0.jar

        Filesize

        1.4MB

        MD5

        acfb5b5fd9ee10bf69497792fd469f85

        SHA1

        0e0845217c4907822403912ad6828d8e0b256208

        SHA256

        b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

        SHA512

        e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

      • C:\Users\Admin\lib\jna-platform-5.5.0.jar

        Filesize

        2.6MB

        MD5

        2f4a99c2758e72ee2b59a73586a2322f

        SHA1

        af38e7c4d0fc73c23ecd785443705bfdee5b90bf

        SHA256

        24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

        SHA512

        b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

      • C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar

        Filesize

        4.1MB

        MD5

        b33387e15ab150a7bf560abdc73c3bec

        SHA1

        66b8075784131f578ef893fd7674273f709b9a4c

        SHA256

        2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

        SHA512

        25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

      • C:\Users\Admin\lib\system-hook-3.5.jar

        Filesize

        772KB

        MD5

        e1aa38a1e78a76a6de73efae136cdb3a

        SHA1

        c463da71871f780b2e2e5dba115d43953b537daf

        SHA256

        2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

        SHA512

        fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

      • memory/548-69-0x000002347E900000-0x000002347E901000-memory.dmp

        Filesize

        4KB

      • memory/548-96-0x000002347E900000-0x000002347E901000-memory.dmp

        Filesize

        4KB

      • memory/548-89-0x000002347E900000-0x000002347E901000-memory.dmp

        Filesize

        4KB

      • memory/548-78-0x000002347E900000-0x000002347E901000-memory.dmp

        Filesize

        4KB

      • memory/548-73-0x000002347E900000-0x000002347E901000-memory.dmp

        Filesize

        4KB

      • memory/548-55-0x000002347E900000-0x000002347E901000-memory.dmp

        Filesize

        4KB

      • memory/548-36-0x000002347E900000-0x000002347E901000-memory.dmp

        Filesize

        4KB

      • memory/2224-123-0x00000220FF390000-0x00000220FF391000-memory.dmp

        Filesize

        4KB

      • memory/2224-131-0x00000220FF390000-0x00000220FF391000-memory.dmp

        Filesize

        4KB

      • memory/2716-159-0x00000288A0510000-0x00000288A0511000-memory.dmp

        Filesize

        4KB

      • memory/2716-174-0x00000288A0510000-0x00000288A0511000-memory.dmp

        Filesize

        4KB