Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-en-20211104
  • submitted
    05-12-2021 07:26

General

  • Target

    Signed agreement documents.js

  • Size

    272KB

  • MD5

    c15a7e48753b74413ffd8c4bedebf689

  • SHA1

    0673e275a19a4f35b09c24941cf9baaae57e3b36

  • SHA256

    37dea53db80a227936238a3e43a474a48114b3f209cf2d44606735a5cfecf727

  • SHA512

    e3d7ed11f895999c564d34aba8ae293dae8ab1e3498f32cdbbb6af828d4550971db2c1ab903315461be58afdb0a8fd1f5a7eeea81869f68d473df32b45c2fde0

Malware Config

Signatures

  • STRRAT

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

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • suricata: ET MALWARE STRRAT CnC Checkin

    suricata: ET MALWARE STRRAT CnC Checkin

  • Blocklisted process makes network request 10 IoCs
  • Drops startup file 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 4 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 42 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\Signed agreement documents.js"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1072
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\kBPnCuqwkU.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      • Adds Run key to start application
      PID:984
    • C:\Program Files\Java\jre7\bin\javaw.exe
      "C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\fnqxfivcz.txt"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:240
      • C:\Program Files\Java\jre7\bin\java.exe
        "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\fnqxfivcz.txt"
        3⤵
        • Drops startup file
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:1916
        • C:\Program Files\Java\jre7\bin\java.exe
          "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\fnqxfivcz.txt"
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:656
          • 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:1664
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:820
          • 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:1876
            • 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:1268
          • 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:1324
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
              6⤵
                PID:1584
            • C:\Windows\system32\cmd.exe
              cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter' path antivirusproduct get displayname /format:list"
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:1908
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /node:localhost /namespace:'\\root\securitycenter' path antivirusproduct get displayname /format:list
                6⤵
                  PID:1636
            • C:\Windows\system32\cmd.exe
              cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\fnqxfivcz.txt"
              4⤵
              • Suspicious use of WriteProcessMemory
              PID:1088
              • C:\Windows\system32\schtasks.exe
                schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\fnqxfivcz.txt"
                5⤵
                • Creates scheduled task(s)
                PID:968

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Execution

      Scheduled Task

      1
      T1053

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Scheduled Task

      1
      T1053

      Privilege Escalation

      Scheduled Task

      1
      T1053

      Defense Evasion

      Modify Registry

      1
      T1112

      Discovery

      System Information Discovery

      1
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna6290702560307556735.dll
        MD5

        e02979ecd43bcc9061eb2b494ab5af50

        SHA1

        3122ac0e751660f646c73b10c4f79685aa65c545

        SHA256

        a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

        SHA512

        1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

      • C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-103686315-404690609-2047157615-1000\83aa4cc77f591dfc2374580bbd95f6ba_b9d440b4-6805-4743-9d27-9cb5fc4d9db0
        MD5

        c8366ae350e7019aefc9d1e6e6a498c6

        SHA1

        5731d8a3e6568a5f2dfbbc87e3db9637df280b61

        SHA256

        11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

        SHA512

        33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

      • C:\Users\Admin\AppData\Roaming\fnqxfivcz.txt
        MD5

        3bbd2a35537d45e465e726ceb068e721

        SHA1

        1fd2e5d632edeea94e688aacabc373ebe3af11c7

        SHA256

        d10a6e46e300e0b6ab0c038b33cdc173b844f5895a994232e5f5d4b0a39215c7

        SHA512

        89776550c479e12d342b53de4ac5bb512f3546eac9e52186cc080c836b4757e665931b416bee2849e2426fceb1b12e3cb376fbf628282dc3ef28378b16b39808

      • C:\Users\Admin\AppData\Roaming\fnqxfivcz.txt
        MD5

        3bbd2a35537d45e465e726ceb068e721

        SHA1

        1fd2e5d632edeea94e688aacabc373ebe3af11c7

        SHA256

        d10a6e46e300e0b6ab0c038b33cdc173b844f5895a994232e5f5d4b0a39215c7

        SHA512

        89776550c479e12d342b53de4ac5bb512f3546eac9e52186cc080c836b4757e665931b416bee2849e2426fceb1b12e3cb376fbf628282dc3ef28378b16b39808

      • C:\Users\Admin\AppData\Roaming\kBPnCuqwkU.js
        MD5

        d70eaf98a3d76fd9734962cc7a770997

        SHA1

        d981a9ff4cb9859a0139f2170268bc3ab289fec9

        SHA256

        cf853567cef87bd09cc6dbe0ff5840e587a74768c831a91f58c150bef3d47a9c

        SHA512

        255480b15b594605a2300a5c036ec11527c9d18ebe789fc5d85ff77774e7636437e8a8ad43b06e8a67919edf4e530f26ced35b51b3dc0937fa45af2d6e1dbcd7

      • C:\Users\Admin\AppData\Roaming\lib\jna-5.5.0.jar
        MD5

        acfb5b5fd9ee10bf69497792fd469f85

        SHA1

        0e0845217c4907822403912ad6828d8e0b256208

        SHA256

        b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

        SHA512

        e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

      • C:\Users\Admin\AppData\Roaming\lib\jna-platform-5.5.0.jar
        MD5

        2f4a99c2758e72ee2b59a73586a2322f

        SHA1

        af38e7c4d0fc73c23ecd785443705bfdee5b90bf

        SHA256

        24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

        SHA512

        b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

      • C:\Users\Admin\AppData\Roaming\lib\sqlite-jdbc-3.14.2.1.jar
        MD5

        b33387e15ab150a7bf560abdc73c3bec

        SHA1

        66b8075784131f578ef893fd7674273f709b9a4c

        SHA256

        2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

        SHA512

        25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

      • C:\Users\Admin\AppData\Roaming\lib\system-hook-3.5.jar
        MD5

        e1aa38a1e78a76a6de73efae136cdb3a

        SHA1

        c463da71871f780b2e2e5dba115d43953b537daf

        SHA256

        2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

        SHA512

        fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

      • C:\Users\Admin\fnqxfivcz.txt
        MD5

        3bbd2a35537d45e465e726ceb068e721

        SHA1

        1fd2e5d632edeea94e688aacabc373ebe3af11c7

        SHA256

        d10a6e46e300e0b6ab0c038b33cdc173b844f5895a994232e5f5d4b0a39215c7

        SHA512

        89776550c479e12d342b53de4ac5bb512f3546eac9e52186cc080c836b4757e665931b416bee2849e2426fceb1b12e3cb376fbf628282dc3ef28378b16b39808

      • C:\Users\Admin\lib\jna-5.5.0.jar
        MD5

        acfb5b5fd9ee10bf69497792fd469f85

        SHA1

        0e0845217c4907822403912ad6828d8e0b256208

        SHA256

        b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

        SHA512

        e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

      • C:\Users\Admin\lib\jna-platform-5.5.0.jar
        MD5

        2f4a99c2758e72ee2b59a73586a2322f

        SHA1

        af38e7c4d0fc73c23ecd785443705bfdee5b90bf

        SHA256

        24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

        SHA512

        b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

      • C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar
        MD5

        b33387e15ab150a7bf560abdc73c3bec

        SHA1

        66b8075784131f578ef893fd7674273f709b9a4c

        SHA256

        2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

        SHA512

        25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

      • C:\Users\Admin\lib\system-hook-3.5.jar
        MD5

        e1aa38a1e78a76a6de73efae136cdb3a

        SHA1

        c463da71871f780b2e2e5dba115d43953b537daf

        SHA256

        2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

        SHA512

        fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

      • \Users\Admin\AppData\Local\Temp\jna-63116079\jna2737668504838320378.dll
        MD5

        e02979ecd43bcc9061eb2b494ab5af50

        SHA1

        3122ac0e751660f646c73b10c4f79685aa65c545

        SHA256

        a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

        SHA512

        1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

      • \Users\Admin\AppData\Local\Temp\jna-63116079\jna6290702560307556735.dll
        MD5

        e02979ecd43bcc9061eb2b494ab5af50

        SHA1

        3122ac0e751660f646c73b10c4f79685aa65c545

        SHA256

        a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

        SHA512

        1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

      • memory/240-66-0x0000000000120000-0x0000000000121000-memory.dmp
        Filesize

        4KB

      • memory/240-63-0x0000000000120000-0x0000000000121000-memory.dmp
        Filesize

        4KB

      • memory/240-58-0x000007FEFC511000-0x000007FEFC513000-memory.dmp
        Filesize

        8KB

      • memory/240-65-0x0000000000120000-0x0000000000121000-memory.dmp
        Filesize

        4KB

      • memory/240-57-0x0000000000000000-mapping.dmp
      • memory/240-72-0x0000000000120000-0x0000000000121000-memory.dmp
        Filesize

        4KB

      • memory/240-60-0x00000000021D0000-0x0000000002440000-memory.dmp
        Filesize

        2.4MB

      • memory/240-61-0x00000000021D0000-0x0000000002440000-memory.dmp
        Filesize

        2.4MB

      • memory/240-62-0x0000000000120000-0x0000000000121000-memory.dmp
        Filesize

        4KB

      • memory/656-98-0x0000000002130000-0x00000000023A0000-memory.dmp
        Filesize

        2.4MB

      • memory/656-97-0x0000000000620000-0x0000000000621000-memory.dmp
        Filesize

        4KB

      • memory/656-146-0x0000000000620000-0x0000000000621000-memory.dmp
        Filesize

        4KB

      • memory/656-85-0x0000000000000000-mapping.dmp
      • memory/656-150-0x0000000000620000-0x0000000000621000-memory.dmp
        Filesize

        4KB

      • memory/656-107-0x0000000000620000-0x0000000000621000-memory.dmp
        Filesize

        4KB

      • memory/656-128-0x0000000000620000-0x0000000000621000-memory.dmp
        Filesize

        4KB

      • memory/820-139-0x0000000000000000-mapping.dmp
      • memory/968-93-0x0000000000000000-mapping.dmp
      • memory/984-55-0x0000000000000000-mapping.dmp
      • memory/1088-84-0x0000000000000000-mapping.dmp
      • memory/1268-141-0x0000000000000000-mapping.dmp
      • memory/1324-142-0x0000000000000000-mapping.dmp
      • memory/1584-143-0x0000000000000000-mapping.dmp
      • memory/1636-145-0x0000000000000000-mapping.dmp
      • memory/1664-138-0x0000000000000000-mapping.dmp
      • memory/1876-140-0x0000000000000000-mapping.dmp
      • memory/1908-144-0x0000000000000000-mapping.dmp
      • memory/1916-71-0x0000000000000000-mapping.dmp
      • memory/1916-86-0x0000000000220000-0x0000000000221000-memory.dmp
        Filesize

        4KB

      • memory/1916-87-0x0000000000220000-0x0000000000221000-memory.dmp
        Filesize

        4KB

      • memory/1916-77-0x0000000000220000-0x0000000000221000-memory.dmp
        Filesize

        4KB

      • memory/1916-76-0x0000000002340000-0x00000000025B0000-memory.dmp
        Filesize

        2.4MB