Analysis

  • max time kernel
    142s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-05-2024 05:24

General

  • Target

    STRI.jar

  • Size

    91KB

  • MD5

    555889a324de30d361c43d5dfd7f8602

  • SHA1

    5144a7265a9290a32bd6cd68b33a8a50083619af

  • SHA256

    9d00a5a5b9e7a5ec7649f732b8272e10f32ae2a70b4dff6822f366d4209d07fa

  • SHA512

    5e65b55c1286d5e783d9546270aaa2fe5e2e39349e20a92aba884fc139b25bd9886aa6211ebb3b052096a50d2a0e0ff83673f09e27b00a059d9da32d773d9922

  • SSDEEP

    1536:uW/Ibxe31wruTddk170K9EmFCdnzxPxy0IKJc0WOhYV9IJns7r+/QirOf9GfP:f+xNuQ17VK5xJy0VkOhFNs76hrQ9GfP

Malware Config

Extracted

Family

strrat

C2

173.212.199.134:1780

kimboy1.duckdns.org:1788

Attributes
  • license_id

    khonsari

  • 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 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Program Files directory 1 IoCs
  • 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 WriteProcessMemory 12 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\STRI.jar
    1⤵
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:4684
    • 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:3120
    • C:\Program Files\Java\jre-1.8\bin\java.exe
      "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Program Files\Java\jre-1.8\STRI.jar"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3516
      • C:\Program Files\Java\jre-1.8\bin\java.exe
        "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\STRI.jar"
        3⤵
        • Drops startup file
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:3212
        • C:\Windows\SYSTEM32\cmd.exe
          cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\STRI.jar"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:960
          • C:\Windows\system32\schtasks.exe
            schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\STRI.jar"
            5⤵
            • Creates scheduled task(s)
            PID:4376
        • 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\STRI.jar"
          4⤵
          • Loads dropped DLL
          PID:2904

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files\Java\jre-1.8\STRI.jar

    Filesize

    91KB

    MD5

    555889a324de30d361c43d5dfd7f8602

    SHA1

    5144a7265a9290a32bd6cd68b33a8a50083619af

    SHA256

    9d00a5a5b9e7a5ec7649f732b8272e10f32ae2a70b4dff6822f366d4209d07fa

    SHA512

    5e65b55c1286d5e783d9546270aaa2fe5e2e39349e20a92aba884fc139b25bd9886aa6211ebb3b052096a50d2a0e0ff83673f09e27b00a059d9da32d773d9922

  • C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp

    Filesize

    46B

    MD5

    442b095b2a6fd132b4170db3c39c2bac

    SHA1

    be3060eb81780a4dfe15e4a20fb8d183b7306015

    SHA256

    de734860e211ca7485c321738aed91aba853b420634fd8f7d67199bf828f1a4e

    SHA512

    e03afaec793e3f6286578f3f47d5cfdb0ea63c3408121cb869db70ed2c98e60366fdee5d5cbfcf70d32d63469a4e2c055cb0c92d4a99a956f64d1b738144811c

  • C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp

    Filesize

    46B

    MD5

    ceeb35d2c993da94af28b7e4027e3254

    SHA1

    1c0a76510a5486e624225c38fa1b8ce2fa9cb2bd

    SHA256

    e0c6766f56b66e5b9ee0a8c75fd735cf5ef8921bc9261a2920d007cb9c7ca2b7

    SHA512

    61bfb7b6a6f6593c986719cb68d4ac1793a4431dd17339270ff00827244bc69555ee58a60ffffdcd2d2ce4b07c9c276d5ebf879c50c620ff2280d817f0ffa024

  • C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna6407342758168053207.dll

    Filesize

    241KB

    MD5

    e02979ecd43bcc9061eb2b494ab5af50

    SHA1

    3122ac0e751660f646c73b10c4f79685aa65c545

    SHA256

    a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

    SHA512

    1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

  • C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-540404634-651139247-2967210625-1000\83aa4cc77f591dfc2374580bbd95f6ba_41e50f4a-4a76-42e1-a3df-51306e426307

    Filesize

    45B

    MD5

    c8366ae350e7019aefc9d1e6e6a498c6

    SHA1

    5731d8a3e6568a5f2dfbbc87e3db9637df280b61

    SHA256

    11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

    SHA512

    33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

  • 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

  • memory/2904-300-0x000002837D950000-0x000002837D951000-memory.dmp

    Filesize

    4KB

  • memory/3212-266-0x00000266A2CD0000-0x00000266A2CD1000-memory.dmp

    Filesize

    4KB

  • memory/3212-250-0x00000266A2CD0000-0x00000266A2CD1000-memory.dmp

    Filesize

    4KB

  • memory/3516-209-0x0000024D1FCF0000-0x0000024D1FCF1000-memory.dmp

    Filesize

    4KB

  • memory/3516-207-0x0000024D1FCF0000-0x0000024D1FCF1000-memory.dmp

    Filesize

    4KB

  • memory/4684-111-0x000001A980450000-0x000001A980460000-memory.dmp

    Filesize

    64KB

  • memory/4684-120-0x000001A9803D0000-0x000001A9803E0000-memory.dmp

    Filesize

    64KB

  • memory/4684-38-0x000001A980310000-0x000001A980320000-memory.dmp

    Filesize

    64KB

  • memory/4684-42-0x000001A980330000-0x000001A980340000-memory.dmp

    Filesize

    64KB

  • memory/4684-41-0x000001A980320000-0x000001A980330000-memory.dmp

    Filesize

    64KB

  • memory/4684-46-0x000001A980000000-0x000001A980270000-memory.dmp

    Filesize

    2.4MB

  • memory/4684-51-0x000001A980280000-0x000001A980290000-memory.dmp

    Filesize

    64KB

  • memory/4684-56-0x000001A980380000-0x000001A980390000-memory.dmp

    Filesize

    64KB

  • memory/4684-55-0x000001A980370000-0x000001A980380000-memory.dmp

    Filesize

    64KB

  • memory/4684-54-0x000001A980290000-0x000001A9802A0000-memory.dmp

    Filesize

    64KB

  • memory/4684-50-0x000001A980270000-0x000001A980280000-memory.dmp

    Filesize

    64KB

  • memory/4684-49-0x000001A980350000-0x000001A980360000-memory.dmp

    Filesize

    64KB

  • memory/4684-48-0x000001A980360000-0x000001A980370000-memory.dmp

    Filesize

    64KB

  • memory/4684-47-0x000001A980340000-0x000001A980350000-memory.dmp

    Filesize

    64KB

  • memory/4684-61-0x000001A9802A0000-0x000001A9802B0000-memory.dmp

    Filesize

    64KB

  • memory/4684-64-0x000001A980390000-0x000001A9803A0000-memory.dmp

    Filesize

    64KB

  • memory/4684-63-0x000001A9802C0000-0x000001A9802D0000-memory.dmp

    Filesize

    64KB

  • memory/4684-62-0x000001A9802B0000-0x000001A9802C0000-memory.dmp

    Filesize

    64KB

  • memory/4684-69-0x000001A9803A0000-0x000001A9803B0000-memory.dmp

    Filesize

    64KB

  • memory/4684-67-0x000001A9802D0000-0x000001A9802E0000-memory.dmp

    Filesize

    64KB

  • memory/4684-73-0x000001A9803B0000-0x000001A9803C0000-memory.dmp

    Filesize

    64KB

  • memory/4684-75-0x000001A9802F0000-0x000001A980300000-memory.dmp

    Filesize

    64KB

  • memory/4684-72-0x000001A9802E0000-0x000001A9802F0000-memory.dmp

    Filesize

    64KB

  • memory/4684-78-0x000001A9803D0000-0x000001A9803E0000-memory.dmp

    Filesize

    64KB

  • memory/4684-77-0x000001A9803C0000-0x000001A9803D0000-memory.dmp

    Filesize

    64KB

  • memory/4684-83-0x000001A9803F0000-0x000001A980400000-memory.dmp

    Filesize

    64KB

  • memory/4684-82-0x000001A980310000-0x000001A980320000-memory.dmp

    Filesize

    64KB

  • memory/4684-81-0x000001A9803E0000-0x000001A9803F0000-memory.dmp

    Filesize

    64KB

  • memory/4684-80-0x000001A980300000-0x000001A980310000-memory.dmp

    Filesize

    64KB

  • memory/4684-91-0x000001A980410000-0x000001A980420000-memory.dmp

    Filesize

    64KB

  • memory/4684-90-0x000001A980400000-0x000001A980410000-memory.dmp

    Filesize

    64KB

  • memory/4684-89-0x000001A980340000-0x000001A980350000-memory.dmp

    Filesize

    64KB

  • memory/4684-88-0x000001A980330000-0x000001A980340000-memory.dmp

    Filesize

    64KB

  • memory/4684-87-0x000001A980320000-0x000001A980330000-memory.dmp

    Filesize

    64KB

  • memory/4684-94-0x000001A980420000-0x000001A980430000-memory.dmp

    Filesize

    64KB

  • memory/4684-93-0x000001A980360000-0x000001A980370000-memory.dmp

    Filesize

    64KB

  • memory/4684-99-0x000001A9F7D90000-0x000001A9F7D91000-memory.dmp

    Filesize

    4KB

  • memory/4684-101-0x000001A980430000-0x000001A980440000-memory.dmp

    Filesize

    64KB

  • memory/4684-100-0x000001A980350000-0x000001A980360000-memory.dmp

    Filesize

    64KB

  • memory/4684-104-0x000001A980370000-0x000001A980380000-memory.dmp

    Filesize

    64KB

  • memory/4684-106-0x000001A980440000-0x000001A980450000-memory.dmp

    Filesize

    64KB

  • memory/4684-105-0x000001A980380000-0x000001A980390000-memory.dmp

    Filesize

    64KB

  • memory/4684-108-0x000001A9F7D90000-0x000001A9F7D91000-memory.dmp

    Filesize

    4KB

  • memory/4684-35-0x000001A980300000-0x000001A980310000-memory.dmp

    Filesize

    64KB

  • memory/4684-110-0x000001A980390000-0x000001A9803A0000-memory.dmp

    Filesize

    64KB

  • memory/4684-113-0x000001A9803A0000-0x000001A9803B0000-memory.dmp

    Filesize

    64KB

  • memory/4684-114-0x000001A980460000-0x000001A980470000-memory.dmp

    Filesize

    64KB

  • memory/4684-116-0x000001A9803B0000-0x000001A9803C0000-memory.dmp

    Filesize

    64KB

  • memory/4684-117-0x000001A980470000-0x000001A980480000-memory.dmp

    Filesize

    64KB

  • memory/4684-119-0x000001A9803C0000-0x000001A9803D0000-memory.dmp

    Filesize

    64KB

  • memory/4684-121-0x000001A980480000-0x000001A980490000-memory.dmp

    Filesize

    64KB

  • memory/4684-36-0x000001A9F7D90000-0x000001A9F7D91000-memory.dmp

    Filesize

    4KB

  • memory/4684-123-0x000001A9F7D90000-0x000001A9F7D91000-memory.dmp

    Filesize

    4KB

  • memory/4684-127-0x000001A9803E0000-0x000001A9803F0000-memory.dmp

    Filesize

    64KB

  • memory/4684-128-0x000001A980490000-0x000001A9804A0000-memory.dmp

    Filesize

    64KB

  • memory/4684-131-0x000001A9804A0000-0x000001A9804B0000-memory.dmp

    Filesize

    64KB

  • memory/4684-130-0x000001A9803F0000-0x000001A980400000-memory.dmp

    Filesize

    64KB

  • memory/4684-133-0x000001A980400000-0x000001A980410000-memory.dmp

    Filesize

    64KB

  • memory/4684-135-0x000001A9804B0000-0x000001A9804C0000-memory.dmp

    Filesize

    64KB

  • memory/4684-134-0x000001A980410000-0x000001A980420000-memory.dmp

    Filesize

    64KB

  • memory/4684-138-0x000001A9F7D90000-0x000001A9F7D91000-memory.dmp

    Filesize

    4KB

  • memory/4684-140-0x000001A980420000-0x000001A980430000-memory.dmp

    Filesize

    64KB

  • memory/4684-141-0x000001A9804C0000-0x000001A9804D0000-memory.dmp

    Filesize

    64KB

  • memory/4684-148-0x000001A9F7D90000-0x000001A9F7D91000-memory.dmp

    Filesize

    4KB

  • memory/4684-149-0x000001A980350000-0x000001A980360000-memory.dmp

    Filesize

    64KB

  • memory/4684-156-0x000001A9802D0000-0x000001A9802E0000-memory.dmp

    Filesize

    64KB

  • memory/4684-155-0x000001A9802C0000-0x000001A9802D0000-memory.dmp

    Filesize

    64KB

  • memory/4684-154-0x000001A9802B0000-0x000001A9802C0000-memory.dmp

    Filesize

    64KB

  • memory/4684-153-0x000001A9802A0000-0x000001A9802B0000-memory.dmp

    Filesize

    64KB

  • memory/4684-152-0x000001A980290000-0x000001A9802A0000-memory.dmp

    Filesize

    64KB

  • memory/4684-151-0x000001A980280000-0x000001A980290000-memory.dmp

    Filesize

    64KB

  • memory/4684-150-0x000001A980270000-0x000001A980280000-memory.dmp

    Filesize

    64KB

  • memory/4684-157-0x000001A9802E0000-0x000001A9802F0000-memory.dmp

    Filesize

    64KB

  • memory/4684-161-0x000001A980320000-0x000001A980330000-memory.dmp

    Filesize

    64KB

  • memory/4684-164-0x000001A980360000-0x000001A980370000-memory.dmp

    Filesize

    64KB

  • memory/4684-163-0x000001A9803F0000-0x000001A980400000-memory.dmp

    Filesize

    64KB

  • memory/4684-162-0x000001A980330000-0x000001A980340000-memory.dmp

    Filesize

    64KB

  • memory/4684-160-0x000001A980310000-0x000001A980320000-memory.dmp

    Filesize

    64KB

  • memory/4684-159-0x000001A980300000-0x000001A980310000-memory.dmp

    Filesize

    64KB

  • memory/4684-158-0x000001A9802F0000-0x000001A980300000-memory.dmp

    Filesize

    64KB

  • memory/4684-165-0x000001A980000000-0x000001A980270000-memory.dmp

    Filesize

    2.4MB

  • memory/4684-169-0x000001A9803A0000-0x000001A9803B0000-memory.dmp

    Filesize

    64KB

  • memory/4684-176-0x000001A980480000-0x000001A980490000-memory.dmp

    Filesize

    64KB

  • memory/4684-175-0x000001A980470000-0x000001A980480000-memory.dmp

    Filesize

    64KB

  • memory/4684-174-0x000001A980460000-0x000001A980470000-memory.dmp

    Filesize

    64KB

  • memory/4684-173-0x000001A980450000-0x000001A980460000-memory.dmp

    Filesize

    64KB

  • memory/4684-172-0x000001A980440000-0x000001A980450000-memory.dmp

    Filesize

    64KB

  • memory/4684-171-0x000001A980430000-0x000001A980440000-memory.dmp

    Filesize

    64KB

  • memory/4684-170-0x000001A980340000-0x000001A980350000-memory.dmp

    Filesize

    64KB

  • memory/4684-33-0x000001A9802F0000-0x000001A980300000-memory.dmp

    Filesize

    64KB

  • memory/4684-28-0x000001A9802E0000-0x000001A9802F0000-memory.dmp

    Filesize

    64KB

  • memory/4684-26-0x000001A9802D0000-0x000001A9802E0000-memory.dmp

    Filesize

    64KB

  • memory/4684-21-0x000001A9802A0000-0x000001A9802B0000-memory.dmp

    Filesize

    64KB

  • memory/4684-22-0x000001A9802B0000-0x000001A9802C0000-memory.dmp

    Filesize

    64KB

  • memory/4684-23-0x000001A9802C0000-0x000001A9802D0000-memory.dmp

    Filesize

    64KB

  • memory/4684-17-0x000001A980290000-0x000001A9802A0000-memory.dmp

    Filesize

    64KB

  • memory/4684-14-0x000001A980270000-0x000001A980280000-memory.dmp

    Filesize

    64KB

  • memory/4684-15-0x000001A980280000-0x000001A980290000-memory.dmp

    Filesize

    64KB

  • memory/4684-2-0x000001A980000000-0x000001A980270000-memory.dmp

    Filesize

    2.4MB

  • memory/4684-168-0x000001A980390000-0x000001A9803A0000-memory.dmp

    Filesize

    64KB

  • memory/4684-167-0x000001A980380000-0x000001A980390000-memory.dmp

    Filesize

    64KB

  • memory/4684-166-0x000001A980370000-0x000001A980380000-memory.dmp

    Filesize

    64KB