Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/06/2024, 15:13

General

  • Target
    NERT_05_06_2024_PDF.jar
  • Size 546KB
  • Sample240606-slq2aagg57
  • SHA256 2abfed09bc56ccecb1c01b8a9f68ab7a7a53ea1d6a3a1a598a3914d8a71e4187
  • MD5 SHA1 SHA512 SSDEEP

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 1 IoCs
  • Modifies file permissions 1 TTPs 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.

  • 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:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
    java -jar C:\Users\Admin\AppData\Local\Temp\NERT_05_06_2024_PDF.jar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3672
    • C:\Windows\system32\icacls.exe
      C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
      2⤵
      • Modifies file permissions
      PID:3996
    • C:\Program Files\Java\jre-1.8\bin\java.exe
      "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\NERT_05_06_2024_PDF.jar"
      2⤵
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:2452
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\NERT_05_06_2024_PDF.jar"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4356
        • C:\Windows\system32\schtasks.exe
          schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\NERT_05_06_2024_PDF.jar"
          4⤵
          • Creates scheduled task(s)
          PID:4776
      • 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\NERT_05_06_2024_PDF.jar"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:3148
        • C:\Windows\SYSTEM32\cmd.exe
          cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2628
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4304
        • C:\Windows\SYSTEM32\cmd.exe
          cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1808
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2056
        • C:\Windows\SYSTEM32\cmd.exe
          cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2544
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
            5⤵
              PID:3940
          • C:\Windows\SYSTEM32\cmd.exe
            cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:4352
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
              5⤵
                PID:3516
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=5420 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:404

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              3903daac9bc4a3b7.timestamp

              • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
              • Size 46B
              • SHA256 e5a2cf7fa9fc7e825213f9bd02c6bf17c1e9e8a2a1040a84a820ff5c3a443050
              • MD5 SHA1 SHA512

              3903daac9bc4a3b7.timestamp

              • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
              • Size 46B
              • SHA256 308c1db3a46546ae2bdec556342109b297d7d8066f44f7be3f8a0976f823511f
              • MD5 SHA1 SHA512

              jna7449141461847284765.dll

              • Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna7449141461847284765.dll
              • Size 241KB
              • SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
              • MD5 SHA1 SHA512 SSDEEP

              83aa4cc77f591dfc2374580bbd95f6ba_2397ee06-28fe-4eaa-8777-f7014368c353

              • Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-3808065738-1666277613-1125846146-1000\83aa4cc77f591dfc2374580bbd95f6ba_2397ee06-28fe-4eaa-8777-f7014368c353
              • Size 45B
              • SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
              • MD5 SHA1 SHA512

              NERT_05_06_2024_PDF.jar

              • Path C:\Users\Admin\NERT_05_06_2024_PDF.jar
              • Size 546KB
              • SHA256 2abfed09bc56ccecb1c01b8a9f68ab7a7a53ea1d6a3a1a598a3914d8a71e4187
              • MD5 SHA1 SHA512 SSDEEP

              jna-5.5.0.jar

              • Path C:\Users\Admin\lib\jna-5.5.0.jar
              • Size 1.4MB
              • SHA256 b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e
              • MD5 SHA1 SHA512 SSDEEP

              jna-platform-5.5.0.jar

              • Path C:\Users\Admin\lib\jna-platform-5.5.0.jar
              • Size 2.6MB
              • SHA256 24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5
              • MD5 SHA1 SHA512 SSDEEP

              sqlite-jdbc-3.14.2.1.jar

              • Path C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar
              • Size 4.1MB
              • SHA256 2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491
              • MD5 SHA1 SHA512 SSDEEP

              system-hook-3.5.jar

              • Path C:\Users\Admin\lib\system-hook-3.5.jar
              • Size 772KB
              • SHA256 2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609
              • MD5 SHA1 SHA512 SSDEEP

              memory/3672-202-0x0000022910980000-0x0000022910990000-memory.dmp

              memory/3672-66-0x0000022910840000-0x0000022910850000-memory.dmp

              memory/3672-27-0x0000022910820000-0x0000022910830000-memory.dmp

              memory/3672-28-0x0000022910830000-0x0000022910840000-memory.dmp

              memory/3672-26-0x0000022910570000-0x00000229107E0000-memory.dmp

              memory/3672-30-0x0000022910840000-0x0000022910850000-memory.dmp

              memory/3672-32-0x0000022910850000-0x0000022910860000-memory.dmp

              memory/3672-34-0x0000022910860000-0x0000022910870000-memory.dmp

              memory/3672-36-0x0000022910870000-0x0000022910880000-memory.dmp

              memory/3672-212-0x00000229108F0000-0x0000022910900000-memory.dmp

              memory/3672-43-0x00000229107E0000-0x00000229107F0000-memory.dmp

              memory/3672-44-0x0000022910880000-0x0000022910890000-memory.dmp

              memory/3672-49-0x0000022910890000-0x00000229108A0000-memory.dmp

              memory/3672-52-0x00000229108B0000-0x00000229108C0000-memory.dmp

              memory/3672-51-0x0000022910800000-0x0000022910810000-memory.dmp

              memory/3672-50-0x00000229108A0000-0x00000229108B0000-memory.dmp

              memory/3672-55-0x00000229108C0000-0x00000229108D0000-memory.dmp

              memory/3672-54-0x0000022910810000-0x0000022910820000-memory.dmp

              memory/3672-48-0x00000229107F0000-0x0000022910800000-memory.dmp

              memory/3672-59-0x0000022910820000-0x0000022910830000-memory.dmp

              memory/3672-61-0x00000229108E0000-0x00000229108F0000-memory.dmp

              memory/3672-60-0x00000229108D0000-0x00000229108E0000-memory.dmp

              memory/3672-63-0x00000229108F0000-0x0000022910900000-memory.dmp

              memory/3672-62-0x0000022910830000-0x0000022910840000-memory.dmp

              memory/3672-214-0x0000022910900000-0x0000022910910000-memory.dmp

              memory/3672-67-0x0000022910900000-0x0000022910910000-memory.dmp

              memory/3672-68-0x0000022910850000-0x0000022910860000-memory.dmp

              memory/3672-69-0x0000022910910000-0x0000022910920000-memory.dmp

              memory/3672-75-0x0000022910550000-0x0000022910551000-memory.dmp

              memory/3672-80-0x0000022910920000-0x0000022910930000-memory.dmp

              memory/3672-79-0x0000022910860000-0x0000022910870000-memory.dmp

              memory/3672-84-0x0000022910550000-0x0000022910551000-memory.dmp

              memory/3672-107-0x0000022910930000-0x0000022910940000-memory.dmp

              memory/3672-106-0x0000022910870000-0x0000022910880000-memory.dmp

              memory/3672-113-0x0000022910880000-0x0000022910890000-memory.dmp

              memory/3672-114-0x0000022910890000-0x00000229108A0000-memory.dmp

              memory/3672-115-0x0000022910940000-0x0000022910950000-memory.dmp

              memory/3672-123-0x0000022910550000-0x0000022910551000-memory.dmp

              memory/3672-213-0x00000229109A0000-0x00000229109B0000-memory.dmp

              memory/3672-138-0x00000229108A0000-0x00000229108B0000-memory.dmp

              memory/3672-166-0x0000022910960000-0x0000022910970000-memory.dmp

              memory/3672-146-0x0000022910950000-0x0000022910960000-memory.dmp

              memory/3672-181-0x00000229108B0000-0x00000229108C0000-memory.dmp

              memory/3672-182-0x0000022910970000-0x0000022910980000-memory.dmp

              memory/3672-201-0x00000229108C0000-0x00000229108D0000-memory.dmp

              memory/3672-20-0x0000022910800000-0x0000022910810000-memory.dmp

              memory/3672-209-0x0000022910990000-0x00000229109A0000-memory.dmp

              memory/3672-206-0x00000229108E0000-0x00000229108F0000-memory.dmp

              memory/3672-205-0x00000229108D0000-0x00000229108E0000-memory.dmp

              memory/3672-215-0x00000229109B0000-0x00000229109C0000-memory.dmp

              memory/3672-125-0x0000022910550000-0x0000022910551000-memory.dmp

              memory/3672-22-0x0000022910810000-0x0000022910820000-memory.dmp

              memory/3672-41-0x0000022910550000-0x0000022910551000-memory.dmp

              memory/3672-232-0x00000229109C0000-0x00000229109D0000-memory.dmp

              memory/3672-231-0x0000022910910000-0x0000022910920000-memory.dmp

              memory/3672-239-0x0000022910920000-0x0000022910930000-memory.dmp

              memory/3672-240-0x00000229109D0000-0x00000229109E0000-memory.dmp

              memory/3672-246-0x00000229109E0000-0x00000229109F0000-memory.dmp

              memory/3672-247-0x00000229109F0000-0x0000022910A00000-memory.dmp

              memory/3672-245-0x0000022910930000-0x0000022910940000-memory.dmp

              memory/3672-254-0x0000022910A00000-0x0000022910A10000-memory.dmp

              memory/3672-253-0x0000022910940000-0x0000022910950000-memory.dmp

              memory/3672-267-0x0000022910A10000-0x0000022910A20000-memory.dmp

              memory/3672-266-0x0000022910960000-0x0000022910970000-memory.dmp

              memory/3672-265-0x0000022910950000-0x0000022910960000-memory.dmp

              memory/3672-275-0x0000022910820000-0x0000022910830000-memory.dmp

              memory/3672-299-0x00000229109D0000-0x00000229109E0000-memory.dmp

              memory/3672-302-0x0000022910A10000-0x0000022910A20000-memory.dmp

              memory/3672-301-0x0000022910A00000-0x0000022910A10000-memory.dmp

              memory/3672-300-0x00000229109F0000-0x0000022910A00000-memory.dmp

              memory/3672-298-0x00000229109C0000-0x00000229109D0000-memory.dmp

              memory/3672-297-0x00000229109A0000-0x00000229109B0000-memory.dmp

              memory/3672-296-0x00000229109B0000-0x00000229109C0000-memory.dmp

              memory/3672-295-0x0000022910990000-0x00000229109A0000-memory.dmp

              memory/3672-294-0x0000022910980000-0x0000022910990000-memory.dmp

              memory/3672-293-0x0000022910970000-0x0000022910980000-memory.dmp

              memory/3672-292-0x0000022910960000-0x0000022910970000-memory.dmp

              memory/3672-291-0x0000022910920000-0x0000022910930000-memory.dmp

              memory/3672-290-0x0000022910910000-0x0000022910920000-memory.dmp

              memory/3672-289-0x0000022910900000-0x0000022910910000-memory.dmp

              memory/3672-288-0x00000229108F0000-0x0000022910900000-memory.dmp

              memory/3672-287-0x00000229108E0000-0x00000229108F0000-memory.dmp

              memory/3672-286-0x00000229108D0000-0x00000229108E0000-memory.dmp

              memory/3672-285-0x00000229108C0000-0x00000229108D0000-memory.dmp

              memory/3672-284-0x0000022910890000-0x00000229108A0000-memory.dmp

              memory/3672-283-0x00000229108A0000-0x00000229108B0000-memory.dmp

              memory/3672-282-0x00000229108B0000-0x00000229108C0000-memory.dmp

              memory/3672-281-0x0000022910880000-0x0000022910890000-memory.dmp

              memory/3672-280-0x0000022910870000-0x0000022910880000-memory.dmp

              memory/3672-279-0x0000022910860000-0x0000022910870000-memory.dmp

              memory/3672-278-0x0000022910850000-0x0000022910860000-memory.dmp

              memory/3672-277-0x0000022910840000-0x0000022910850000-memory.dmp

              memory/3672-276-0x0000022910570000-0x00000229107E0000-memory.dmp

              memory/3672-274-0x0000022910810000-0x0000022910820000-memory.dmp

              memory/3672-17-0x00000229107E0000-0x00000229107F0000-memory.dmp

              memory/3672-18-0x00000229107F0000-0x0000022910800000-memory.dmp

              memory/3672-11-0x0000022910550000-0x0000022910551000-memory.dmp

              memory/3672-2-0x0000022910570000-0x00000229107E0000-memory.dmp

              memory/3672-273-0x0000022910800000-0x0000022910810000-memory.dmp

              memory/3672-272-0x0000022910830000-0x0000022910840000-memory.dmp

              memory/3672-271-0x00000229107E0000-0x00000229107F0000-memory.dmp

              memory/3672-270-0x00000229107F0000-0x0000022910800000-memory.dmp