Resubmissions

13/07/2024, 02:47

240713-c9v25ssdkm

16/05/2024, 14:29

240516-rtkc2aha5v10

Analysis

  • max time kernel
    150s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/05/2024, 14:29

General

  • Target
    e6f93fbf80cf48ca944fd053685061a3c512dcf83952fd440a0f882ebab76e9f.jar
  • Size 171KB
  • Sample240516-rtkc2aha5v
  • SHA256 e6f93fbf80cf48ca944fd053685061a3c512dcf83952fd440a0f882ebab76e9f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • strrat

C2
  • axe.ydns.eu:3232

  • jnchinacp.ydns.eu:147

Attributes
  • license_id

    JXYU-7CPT-BJRM-66GN-22SV

  • plugins_url

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

  • scheduled_task

    true

  • secondary_startup

    true

  • startup

    true

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\e6f93fbf80cf48ca944fd053685061a3c512dcf83952fd440a0f882ebab76e9f.jar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:392
    • 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:4184
    • C:\Program Files\Java\jre-1.8\bin\java.exe
      "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\e6f93fbf80cf48ca944fd053685061a3c512dcf83952fd440a0f882ebab76e9f.jar"
      2⤵
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:3552
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\e6f93fbf80cf48ca944fd053685061a3c512dcf83952fd440a0f882ebab76e9f.jar"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:448
        • C:\Windows\system32\schtasks.exe
          schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\e6f93fbf80cf48ca944fd053685061a3c512dcf83952fd440a0f882ebab76e9f.jar"
          4⤵
          • Creates scheduled task(s)
          PID:5064
      • 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\e6f93fbf80cf48ca944fd053685061a3c512dcf83952fd440a0f882ebab76e9f.jar"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:4364
        • 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:4456
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3980
        • 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:2908
          • 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:4044
        • 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:5084
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
            5⤵
              PID:4160
          • 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:2184
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
              5⤵
                PID:4800
      • 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=3524 --field-trial-handle=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:4592

        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 1bc7ea4fd2675499228826c0abe101a04853b6b3cdc7115bce3e115046a897ff
              • MD5 SHA1 SHA512

              jna1980017517929818555.dll

              • Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna1980017517929818555.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

              e6f93fbf80cf48ca944fd053685061a3c512dcf83952fd440a0f882ebab76e9f.jar

              • Path C:\Users\Admin\e6f93fbf80cf48ca944fd053685061a3c512dcf83952fd440a0f882ebab76e9f.jar
              • Size 171KB
              • SHA256 e6f93fbf80cf48ca944fd053685061a3c512dcf83952fd440a0f882ebab76e9f
              • 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/392-263-0x0000027B6BCF0000-0x0000027B6BD00000-memory.dmp

              memory/392-319-0x0000027B6BC00000-0x0000027B6BC10000-memory.dmp

              memory/392-29-0x0000027B6BB90000-0x0000027B6BBA0000-memory.dmp

              memory/392-32-0x0000027B6BBA0000-0x0000027B6BBB0000-memory.dmp

              memory/392-37-0x0000027B6BBC0000-0x0000027B6BBD0000-memory.dmp

              memory/392-36-0x0000027B6BBB0000-0x0000027B6BBC0000-memory.dmp

              memory/392-42-0x0000027B6A0F0000-0x0000027B6A0F1000-memory.dmp

              memory/392-44-0x0000027B6BBD0000-0x0000027B6BBE0000-memory.dmp

              memory/392-53-0x0000027B6A0F0000-0x0000027B6A0F1000-memory.dmp

              memory/392-57-0x0000027B6BBE0000-0x0000027B6BBF0000-memory.dmp

              memory/392-61-0x0000027B6BBF0000-0x0000027B6BC00000-memory.dmp

              memory/392-66-0x0000027B6BC00000-0x0000027B6BC10000-memory.dmp

              memory/392-65-0x0000027B6BB50000-0x0000027B6BB60000-memory.dmp

              memory/392-69-0x0000027B6BC10000-0x0000027B6BC20000-memory.dmp

              memory/392-68-0x0000027B6BB60000-0x0000027B6BB70000-memory.dmp

              memory/392-74-0x0000027B6BB70000-0x0000027B6BB80000-memory.dmp

              memory/392-75-0x0000027B6BC20000-0x0000027B6BC30000-memory.dmp

              memory/392-78-0x0000027B6BC30000-0x0000027B6BC40000-memory.dmp

              memory/392-81-0x0000027B6BC40000-0x0000027B6BC50000-memory.dmp

              memory/392-85-0x0000027B6BC50000-0x0000027B6BC60000-memory.dmp

              memory/392-84-0x0000027B6BBA0000-0x0000027B6BBB0000-memory.dmp

              memory/392-80-0x0000027B6BB90000-0x0000027B6BBA0000-memory.dmp

              memory/392-77-0x0000027B6BB80000-0x0000027B6BB90000-memory.dmp

              memory/392-89-0x0000027B6BC60000-0x0000027B6BC70000-memory.dmp

              memory/392-87-0x0000027B6BBB0000-0x0000027B6BBC0000-memory.dmp

              memory/392-88-0x0000027B6BBC0000-0x0000027B6BBD0000-memory.dmp

              memory/392-98-0x0000027B6A0F0000-0x0000027B6A0F1000-memory.dmp

              memory/392-113-0x0000027B6BC70000-0x0000027B6BC80000-memory.dmp

              memory/392-112-0x0000027B6BBD0000-0x0000027B6BBE0000-memory.dmp

              memory/392-117-0x0000027B6A0F0000-0x0000027B6A0F1000-memory.dmp

              memory/392-126-0x0000027B6BC80000-0x0000027B6BC90000-memory.dmp

              memory/392-125-0x0000027B6BBE0000-0x0000027B6BBF0000-memory.dmp

              memory/392-136-0x0000027B6BC90000-0x0000027B6BCA0000-memory.dmp

              memory/392-159-0x0000027B6BCA0000-0x0000027B6BCB0000-memory.dmp

              memory/392-158-0x0000027B6BC00000-0x0000027B6BC10000-memory.dmp

              memory/392-135-0x0000027B6BBF0000-0x0000027B6BC00000-memory.dmp

              memory/392-197-0x0000027B6BCB0000-0x0000027B6BCC0000-memory.dmp

              memory/392-196-0x0000027B6BC10000-0x0000027B6BC20000-memory.dmp

              memory/392-211-0x0000027B6BC20000-0x0000027B6BC30000-memory.dmp

              memory/392-212-0x0000027B6BCC0000-0x0000027B6BCD0000-memory.dmp

              memory/392-258-0x0000027B6BC40000-0x0000027B6BC50000-memory.dmp

              memory/392-257-0x0000027B6BCE0000-0x0000027B6BCF0000-memory.dmp

              memory/392-268-0x0000027B6BD10000-0x0000027B6BD20000-memory.dmp

              memory/392-267-0x0000027B6BC60000-0x0000027B6BC70000-memory.dmp

              memory/392-264-0x0000027B6BD00000-0x0000027B6BD10000-memory.dmp

              memory/392-25-0x0000027B6BB70000-0x0000027B6BB80000-memory.dmp

              memory/392-262-0x0000027B6BC50000-0x0000027B6BC60000-memory.dmp

              memory/392-256-0x0000027B6BCD0000-0x0000027B6BCE0000-memory.dmp

              memory/392-277-0x0000027B6BD20000-0x0000027B6BD30000-memory.dmp

              memory/392-276-0x0000027B6BC70000-0x0000027B6BC80000-memory.dmp

              memory/392-27-0x0000027B6BB80000-0x0000027B6BB90000-memory.dmp

              memory/392-2-0x0000027B6B8E0000-0x0000027B6BB50000-memory.dmp

              memory/392-279-0x0000027B6BD30000-0x0000027B6BD40000-memory.dmp

              memory/392-285-0x0000027B6BD40000-0x0000027B6BD50000-memory.dmp

              memory/392-284-0x0000027B6BC90000-0x0000027B6BCA0000-memory.dmp

              memory/392-291-0x0000027B6BCA0000-0x0000027B6BCB0000-memory.dmp

              memory/392-298-0x0000027B6BCB0000-0x0000027B6BCC0000-memory.dmp

              memory/392-303-0x0000027B6BCC0000-0x0000027B6BCD0000-memory.dmp

              memory/392-322-0x0000027B6BC30000-0x0000027B6BC40000-memory.dmp

              memory/392-321-0x0000027B6BC20000-0x0000027B6BC30000-memory.dmp

              memory/392-330-0x0000027B6BD40000-0x0000027B6BD50000-memory.dmp

              memory/392-329-0x0000027B6BD30000-0x0000027B6BD40000-memory.dmp

              memory/392-328-0x0000027B6BD20000-0x0000027B6BD30000-memory.dmp

              memory/392-327-0x0000027B6BD10000-0x0000027B6BD20000-memory.dmp

              memory/392-326-0x0000027B6BD00000-0x0000027B6BD10000-memory.dmp

              memory/392-325-0x0000027B6BCF0000-0x0000027B6BD00000-memory.dmp

              memory/392-324-0x0000027B6BCE0000-0x0000027B6BCF0000-memory.dmp

              memory/392-323-0x0000027B6BCD0000-0x0000027B6BCE0000-memory.dmp

              memory/392-320-0x0000027B6BC10000-0x0000027B6BC20000-memory.dmp

              memory/392-255-0x0000027B6BC30000-0x0000027B6BC40000-memory.dmp

              memory/392-318-0x0000027B6BBF0000-0x0000027B6BC00000-memory.dmp

              memory/392-317-0x0000027B6BBE0000-0x0000027B6BBF0000-memory.dmp

              memory/392-316-0x0000027B6BBD0000-0x0000027B6BBE0000-memory.dmp

              memory/392-22-0x0000027B6B8E0000-0x0000027B6BB50000-memory.dmp

              memory/392-315-0x0000027B6BBC0000-0x0000027B6BBD0000-memory.dmp

              memory/392-314-0x0000027B6BBB0000-0x0000027B6BBC0000-memory.dmp

              memory/392-313-0x0000027B6BBA0000-0x0000027B6BBB0000-memory.dmp

              memory/392-312-0x0000027B6BB90000-0x0000027B6BBA0000-memory.dmp

              memory/392-311-0x0000027B6BB80000-0x0000027B6BB90000-memory.dmp

              memory/392-310-0x0000027B6BB70000-0x0000027B6BB80000-memory.dmp

              memory/392-309-0x0000027B6BB60000-0x0000027B6BB70000-memory.dmp

              memory/392-308-0x0000027B6BB50000-0x0000027B6BB60000-memory.dmp

              memory/392-307-0x0000027B6B8E0000-0x0000027B6BB50000-memory.dmp

              memory/392-23-0x0000027B6BB60000-0x0000027B6BB70000-memory.dmp

              memory/392-11-0x0000027B6A0F0000-0x0000027B6A0F1000-memory.dmp

              memory/392-20-0x0000027B6BB50000-0x0000027B6BB60000-memory.dmp

              memory/392-278-0x0000027B6BC80000-0x0000027B6BC90000-memory.dmp

              memory/3552-378-0x000001556CDF0000-0x000001556CE00000-memory.dmp

              memory/3552-304-0x000001556CB70000-0x000001556CDE0000-memory.dmp

              memory/3552-355-0x000001556CE30000-0x000001556CE40000-memory.dmp

              memory/3552-354-0x000001556CE20000-0x000001556CE30000-memory.dmp

              memory/3552-359-0x000001556CE50000-0x000001556CE60000-memory.dmp

              memory/3552-347-0x000001556CDF0000-0x000001556CE00000-memory.dmp

              memory/3552-376-0x000001556CDE0000-0x000001556CDF0000-memory.dmp

              memory/3552-374-0x000001556CB70000-0x000001556CDE0000-memory.dmp

              memory/3552-349-0x000001556CE00000-0x000001556CE10000-memory.dmp

              memory/3552-361-0x000001556CE60000-0x000001556CE70000-memory.dmp

              memory/3552-377-0x000001556CB70000-0x000001556CDE0000-memory.dmp

              memory/3552-345-0x000001556CDE0000-0x000001556CDF0000-memory.dmp

              memory/3552-358-0x000001556CE40000-0x000001556CE50000-memory.dmp

              memory/3552-351-0x000001556CE10000-0x000001556CE20000-memory.dmp