Analysis

  • max time kernel
    146s
  • max time network
    192s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    22-06-2021 13:03

General

  • Target

    PurchaseOrderDetails1.jar

  • Size

    185KB

  • MD5

    d504d3b7e5e1bdac63d9318149856154

  • SHA1

    3381f92ad69fae1d010ac5658021dc7637f268d9

  • SHA256

    07ef8f0b6be3148f8f09592e0089fc2b686919f731a161e90aac867741e17167

  • SHA512

    996d82af3f02da6b5e5636af05f9f3c7c017362ce960d124aca04aa9e880d5238c839a12f864c2a8dc4d5a5cd1723c13e1b15093184f4444028e2d01162c414d

Malware Config

Signatures

  • STRRAT

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

  • Drops startup file 1 IoCs
  • Loads dropped DLL 2 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.

  • Runs .reg file with regedit 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Windows\system32\java.exe
    java -jar C:\Users\Admin\AppData\Local\Temp\PurchaseOrderDetails1.jar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1920
    • C:\Windows\system32\wscript.exe
      wscript C:\Users\Admin\lrhvpssrcz.js
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1656
      • C:\Windows\regedit.exe
        "regedit.exe" "C:\Users\Admin\AppData\Local\Temp\ebgeaegdbdecaedfebace.reg"
        3⤵
        • Runs .reg file with regedit
        PID:292
      • C:\Program Files\Java\jre7\bin\javaw.exe
        "C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\eskzqmikfo.txt"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:772
        • C:\Program Files\Java\jre7\bin\java.exe
          "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\eskzqmikfo.txt"
          4⤵
          • Drops startup file
          • Loads dropped DLL
          • Adds Run key to start application
          • Suspicious use of WriteProcessMemory
          PID:968
          • C:\Windows\system32\cmd.exe
            cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\eskzqmikfo.txt"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:808
            • C:\Windows\system32\schtasks.exe
              schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\eskzqmikfo.txt"
              6⤵
              • Creates scheduled task(s)
              PID:1484
          • C:\Program Files\Java\jre7\bin\java.exe
            "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\eskzqmikfo.txt"
            5⤵
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:652
            • 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:832
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
                7⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:324
            • 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:2008
              • 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:1852
            • 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:1940
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
                7⤵
                  PID:1844
              • C:\Windows\system32\cmd.exe
                cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter' path antivirusproduct get displayname /format:list"
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:1648
                • C:\Windows\System32\Wbem\WMIC.exe
                  wmic /node:localhost /namespace:'\\root\securitycenter' path antivirusproduct get displayname /format:list
                  7⤵
                    PID:1624

      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\ebgeaegdbdecaedfebace.reg
        MD5

        0e5411d7ecba9a435afda71c6c39d8fd

        SHA1

        2d6812052bf7be1b5e213e1d813ae39faa07284c

        SHA256

        cb68d50df5817e51ec5b2f72893dc4c749bf3504519107e0a78dda84d55f09e2

        SHA512

        903ac6e5c8a12607af267b54bcbbedfa5542c5b4f7ea289ab7c6a32a424d5b846ae406d830cb4ad48e2b46f92c504163c0856af8c3e09685a8855f39f616ddb1

      • C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna1872256319183646214.dll
        MD5

        e02979ecd43bcc9061eb2b494ab5af50

        SHA1

        3122ac0e751660f646c73b10c4f79685aa65c545

        SHA256

        a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

        SHA512

        1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

      • C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2513283230-931923277-594887482-1000\83aa4cc77f591dfc2374580bbd95f6ba_17ebba21-ade9-4848-b865-5b9359ee593d
        MD5

        c8366ae350e7019aefc9d1e6e6a498c6

        SHA1

        5731d8a3e6568a5f2dfbbc87e3db9637df280b61

        SHA256

        11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

        SHA512

        33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

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

        b7164f048951ac2c2da6642aae062eaa

        SHA1

        c10d4d37c18b0198f6e36d190b669e90392c4957

        SHA256

        ee5de847d0030b13a6fa1b9d6d78b7f201369f433928d397d7c295ff1efe93c9

        SHA512

        01d1cc58caead7c18873e0bbf9a1c3551ab79e85e3ae34147b166848306d708857408603f61a1575bbaae2aa707574bd200cb8770f5abd16b2ba87cbfd350bad

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

        b7164f048951ac2c2da6642aae062eaa

        SHA1

        c10d4d37c18b0198f6e36d190b669e90392c4957

        SHA256

        ee5de847d0030b13a6fa1b9d6d78b7f201369f433928d397d7c295ff1efe93c9

        SHA512

        01d1cc58caead7c18873e0bbf9a1c3551ab79e85e3ae34147b166848306d708857408603f61a1575bbaae2aa707574bd200cb8770f5abd16b2ba87cbfd350bad

      • 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\eskzqmikfo.txt
        MD5

        b7164f048951ac2c2da6642aae062eaa

        SHA1

        c10d4d37c18b0198f6e36d190b669e90392c4957

        SHA256

        ee5de847d0030b13a6fa1b9d6d78b7f201369f433928d397d7c295ff1efe93c9

        SHA512

        01d1cc58caead7c18873e0bbf9a1c3551ab79e85e3ae34147b166848306d708857408603f61a1575bbaae2aa707574bd200cb8770f5abd16b2ba87cbfd350bad

      • 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

      • C:\Users\Admin\lrhvpssrcz.js
        MD5

        6593fd43b67d7c1e1595517446a6c7ea

        SHA1

        b35c05da61381f51cb993bd7b1da45676445ade1

        SHA256

        d725e734cd1d7c2f807d1bb30443b3152cc2b15c01657df4cb349aa1a043e16d

        SHA512

        f41f5b84a4b2d50818b512b412f694937d726af10f4661c5fa7eb69337e3ac7251efa47e2fa027907ce1d905d5088e34f330ba6c82265f8b75610594cd084e95

      • \Users\Admin\AppData\Local\Temp\jna-63116079\jna1872256319183646214.dll
        MD5

        e02979ecd43bcc9061eb2b494ab5af50

        SHA1

        3122ac0e751660f646c73b10c4f79685aa65c545

        SHA256

        a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

        SHA512

        1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

      • \Users\Admin\AppData\Local\Temp\jna-63116079\jna19202461238870775.dll
        MD5

        e02979ecd43bcc9061eb2b494ab5af50

        SHA1

        3122ac0e751660f646c73b10c4f79685aa65c545

        SHA256

        a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

        SHA512

        1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

      • memory/292-66-0x0000000000210000-0x0000000000211000-memory.dmp
        Filesize

        4KB

      • memory/292-64-0x0000000000000000-mapping.dmp
      • memory/324-145-0x0000000000000000-mapping.dmp
      • memory/652-106-0x0000000000000000-mapping.dmp
      • memory/652-111-0x0000000000420000-0x0000000000421000-memory.dmp
        Filesize

        4KB

      • memory/652-112-0x00000000022E0000-0x0000000002550000-memory.dmp
        Filesize

        2.4MB

      • memory/652-119-0x0000000000420000-0x0000000000421000-memory.dmp
        Filesize

        4KB

      • memory/652-141-0x0000000000420000-0x0000000000421000-memory.dmp
        Filesize

        4KB

      • memory/772-77-0x0000000000310000-0x0000000000311000-memory.dmp
        Filesize

        4KB

      • memory/772-78-0x0000000000310000-0x0000000000311000-memory.dmp
        Filesize

        4KB

      • memory/772-89-0x0000000000310000-0x0000000000311000-memory.dmp
        Filesize

        4KB

      • memory/772-68-0x0000000000000000-mapping.dmp
      • memory/772-71-0x0000000002160000-0x00000000023D0000-memory.dmp
        Filesize

        2.4MB

      • memory/772-88-0x0000000000310000-0x0000000000311000-memory.dmp
        Filesize

        4KB

      • memory/772-87-0x0000000000310000-0x0000000000311000-memory.dmp
        Filesize

        4KB

      • memory/772-86-0x0000000000310000-0x0000000000311000-memory.dmp
        Filesize

        4KB

      • memory/772-85-0x0000000000310000-0x0000000000311000-memory.dmp
        Filesize

        4KB

      • memory/772-84-0x0000000000310000-0x0000000000311000-memory.dmp
        Filesize

        4KB

      • memory/772-83-0x0000000000310000-0x0000000000311000-memory.dmp
        Filesize

        4KB

      • memory/772-72-0x0000000000310000-0x0000000000311000-memory.dmp
        Filesize

        4KB

      • memory/772-73-0x0000000000310000-0x0000000000311000-memory.dmp
        Filesize

        4KB

      • memory/772-75-0x0000000000310000-0x0000000000311000-memory.dmp
        Filesize

        4KB

      • memory/772-82-0x0000000000310000-0x0000000000311000-memory.dmp
        Filesize

        4KB

      • memory/772-81-0x0000000000310000-0x0000000000311000-memory.dmp
        Filesize

        4KB

      • memory/772-79-0x0000000000310000-0x0000000000311000-memory.dmp
        Filesize

        4KB

      • memory/808-105-0x0000000000000000-mapping.dmp
      • memory/832-144-0x0000000000000000-mapping.dmp
      • memory/968-93-0x0000000000000000-mapping.dmp
      • memory/968-107-0x0000000000120000-0x0000000000121000-memory.dmp
        Filesize

        4KB

      • memory/968-98-0x0000000000120000-0x0000000000121000-memory.dmp
        Filesize

        4KB

      • memory/968-97-0x00000000022E0000-0x0000000002550000-memory.dmp
        Filesize

        2.4MB

      • memory/1484-108-0x0000000000000000-mapping.dmp
      • memory/1624-151-0x0000000000000000-mapping.dmp
      • memory/1648-150-0x0000000000000000-mapping.dmp
      • memory/1656-60-0x0000000000000000-mapping.dmp
      • memory/1844-149-0x0000000000000000-mapping.dmp
      • memory/1852-147-0x0000000000000000-mapping.dmp
      • memory/1920-61-0x00000000002B0000-0x00000000002B1000-memory.dmp
        Filesize

        4KB

      • memory/1920-62-0x00000000020E0000-0x0000000002350000-memory.dmp
        Filesize

        2.4MB

      • memory/1920-59-0x000007FEFB741000-0x000007FEFB743000-memory.dmp
        Filesize

        8KB

      • memory/1940-148-0x0000000000000000-mapping.dmp
      • memory/2008-146-0x0000000000000000-mapping.dmp