Analysis

  • max time kernel
    145s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-03-2023 07:01

General

  • Target

    Doc49870477302203.js

  • Size

    363KB

  • MD5

    92764f45d45e4df159ebd139e2c6619c

  • SHA1

    7ef9907dd1c4b29df121133f0c31d720d806d0b6

  • SHA256

    91bc3eed793940f46537c8690c61c496021d8e68bfb016d8d4c390eab8e0e4b7

  • SHA512

    33f49c8f3a16db9bd3de072055baeb8f6966aad82bbbfa5281a6a204ac49216c8bff6008b13f3cbee60e6b7d16d2609b35a18b99939f745a689cf55c6c14fae1

  • SSDEEP

    6144:GQrM9UP/tCo8jc9p2vrXoEyykCSghKHyi6NhPTstoHL:NTD+/Rkjmnio7Kor

Malware Config

Signatures

  • STRRAT

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 2 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.

  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 26 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\Doc49870477302203.js
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1592
    • C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe
      "C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\txynbuksor.txt"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2956
      • C:\Program Files\Java\jre1.8.0_66\bin\java.exe
        "C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\txynbuksor.txt"
        3⤵
        • Drops startup file
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:1168
        • C:\Windows\SYSTEM32\cmd.exe
          cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\txynbuksor.txt"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3652
          • C:\Windows\system32\schtasks.exe
            schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\txynbuksor.txt"
            5⤵
            • Creates scheduled task(s)
            PID:3180
        • C:\Program Files\Java\jre1.8.0_66\bin\java.exe
          "C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\txynbuksor.txt"
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:4464
          • C:\Windows\SYSTEM32\cmd.exe
            cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1828
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:4548
          • C:\Windows\SYSTEM32\cmd.exe
            cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:2844
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:2992
          • C:\Windows\SYSTEM32\cmd.exe
            cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:5008
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
              6⤵
                PID:1944
            • C:\Windows\SYSTEM32\cmd.exe
              cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list"
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:4756
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
                6⤵
                  PID:3184

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp

        Filesize

        50B

        MD5

        6cc4d4410ffd012dc4da5bf95a0e9c84

        SHA1

        a1099ec19dde07b19c2de73dfe4ed073cfae5905

        SHA256

        f0be990b4acb4c99d974fc9d6a43d59b2b2363de00f9db5bd01a7911273305df

        SHA512

        a69831ea515d5657921ae38101f1d8ca8bd7a9dcdb77ce82165ec8529ca7184f9cf0d2ec6c13569e360eea86e820f94152b803474335aa0189b1f38a22f93c75

      • C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp

        Filesize

        50B

        MD5

        0d5aae57d77e954ee08735b73185f503

        SHA1

        7f65b8273d03a7cf1aba18c2fc6be4a45d5a1d92

        SHA256

        f39495944a4a2ccd5a6f71666468a20b02f7ea52dcac5bbe7cd9e550f4bc2102

        SHA512

        177a18333bd61fc6d1055cddf9fbec525bb707c549ddf408cf3fc826d0d0e3f89fb1fb0e51da48d9eb9439421006de3493b625ad9d2dc695c7aa16b1870f28aa

      • C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna2944834743314406913.dll

        Filesize

        241KB

        MD5

        e02979ecd43bcc9061eb2b494ab5af50

        SHA1

        3122ac0e751660f646c73b10c4f79685aa65c545

        SHA256

        a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

        SHA512

        1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

      • C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-1529757233-3489015626-3409890339-1000\83aa4cc77f591dfc2374580bbd95f6ba_2007c659-eb65-4631-bf41-16f7650120a3

        Filesize

        45B

        MD5

        c8366ae350e7019aefc9d1e6e6a498c6

        SHA1

        5731d8a3e6568a5f2dfbbc87e3db9637df280b61

        SHA256

        11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

        SHA512

        33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\txynbuksor.txt

        Filesize

        164KB

        MD5

        f02861314a99a6cd2995ac5e5313a855

        SHA1

        c4beec880e8e626d2c600db933165dd95581a339

        SHA256

        f1744458058b496f511390a9622b126bc74ae949392811a1b92ed6401f08dee6

        SHA512

        92603940c2fbc73f6723284510a65d800904604ce2278d9d83985a725265225ce6ca85bf09712a5f528de45c779b2366034e4b8d393150648785585539ffec1b

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

        Filesize

        1.4MB

        MD5

        acfb5b5fd9ee10bf69497792fd469f85

        SHA1

        0e0845217c4907822403912ad6828d8e0b256208

        SHA256

        b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

        SHA512

        e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

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

        Filesize

        2.6MB

        MD5

        2f4a99c2758e72ee2b59a73586a2322f

        SHA1

        af38e7c4d0fc73c23ecd785443705bfdee5b90bf

        SHA256

        24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

        SHA512

        b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

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

        Filesize

        4.1MB

        MD5

        b33387e15ab150a7bf560abdc73c3bec

        SHA1

        66b8075784131f578ef893fd7674273f709b9a4c

        SHA256

        2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

        SHA512

        25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

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

        Filesize

        772KB

        MD5

        e1aa38a1e78a76a6de73efae136cdb3a

        SHA1

        c463da71871f780b2e2e5dba115d43953b537daf

        SHA256

        2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

        SHA512

        fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

      • C:\Users\Admin\AppData\Roaming\txynbuksor.txt

        Filesize

        164KB

        MD5

        f02861314a99a6cd2995ac5e5313a855

        SHA1

        c4beec880e8e626d2c600db933165dd95581a339

        SHA256

        f1744458058b496f511390a9622b126bc74ae949392811a1b92ed6401f08dee6

        SHA512

        92603940c2fbc73f6723284510a65d800904604ce2278d9d83985a725265225ce6ca85bf09712a5f528de45c779b2366034e4b8d393150648785585539ffec1b

      • C:\Users\Admin\AppData\Roaming\txynbuksor.txt

        Filesize

        164KB

        MD5

        f02861314a99a6cd2995ac5e5313a855

        SHA1

        c4beec880e8e626d2c600db933165dd95581a339

        SHA256

        f1744458058b496f511390a9622b126bc74ae949392811a1b92ed6401f08dee6

        SHA512

        92603940c2fbc73f6723284510a65d800904604ce2278d9d83985a725265225ce6ca85bf09712a5f528de45c779b2366034e4b8d393150648785585539ffec1b

      • 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

      • C:\Users\Admin\txynbuksor.txt

        Filesize

        164KB

        MD5

        f02861314a99a6cd2995ac5e5313a855

        SHA1

        c4beec880e8e626d2c600db933165dd95581a339

        SHA256

        f1744458058b496f511390a9622b126bc74ae949392811a1b92ed6401f08dee6

        SHA512

        92603940c2fbc73f6723284510a65d800904604ce2278d9d83985a725265225ce6ca85bf09712a5f528de45c779b2366034e4b8d393150648785585539ffec1b

      • memory/1168-222-0x0000000002C20000-0x0000000002C21000-memory.dmp

        Filesize

        4KB

      • memory/1168-233-0x0000000002C20000-0x0000000002C21000-memory.dmp

        Filesize

        4KB

      • memory/2956-194-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

        Filesize

        4KB

      • memory/2956-191-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

        Filesize

        4KB

      • memory/2956-197-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

        Filesize

        4KB

      • memory/2956-195-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

        Filesize

        4KB

      • memory/2956-200-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

        Filesize

        4KB

      • memory/2956-205-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

        Filesize

        4KB

      • memory/2956-193-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

        Filesize

        4KB

      • memory/2956-196-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

        Filesize

        4KB

      • memory/2956-181-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

        Filesize

        4KB

      • memory/2956-179-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

        Filesize

        4KB

      • memory/2956-174-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

        Filesize

        4KB

      • memory/2956-145-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

        Filesize

        4KB

      • memory/2956-165-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

        Filesize

        4KB

      • memory/4464-250-0x0000000000C60000-0x0000000000C61000-memory.dmp

        Filesize

        4KB

      • memory/4464-267-0x0000000000C60000-0x0000000000C61000-memory.dmp

        Filesize

        4KB