Analysis

  • max time kernel
    142s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-06-2024 01:38

General

  • Target

    ed41f1a75fc6e0e049e815903dac8c52e12ae6212103e9002206f0dd14ea44db.jar

  • Size

    208KB

  • MD5

    4a8fb5a583ce8359221745c1962bfdcc

  • SHA1

    27165892e02294dcf85c24ff9b942fdecabfd145

  • SHA256

    ed41f1a75fc6e0e049e815903dac8c52e12ae6212103e9002206f0dd14ea44db

  • SHA512

    8a8fca2a416892b560ea7b80c0045976a51469067539a640a3c2caa0eca682243c3ea4e86d186114bebdbb6e957887a8ea9ea92846d6d30aa37c5b1da129cbeb

  • SSDEEP

    3072:IjVE+tfBfElDMyi+EJOAARy3qVmefPC+TfSf0jB90VJTdTqET7eGipBfNvH:IplBOQKAA+t6BusiVJTdqigBl/

Malware Config

Extracted

Family

strrat

C2

chongmei33.publicvm.com:44662

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 1 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 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 10 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\ed41f1a75fc6e0e049e815903dac8c52e12ae6212103e9002206f0dd14ea44db.jar
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4620
    • 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:4832
    • C:\Program Files\Java\jre-1.8\bin\java.exe
      "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\ed41f1a75fc6e0e049e815903dac8c52e12ae6212103e9002206f0dd14ea44db.jar"
      2⤵
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:4508
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\ed41f1a75fc6e0e049e815903dac8c52e12ae6212103e9002206f0dd14ea44db.jar"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1164
        • C:\Windows\system32\schtasks.exe
          schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\ed41f1a75fc6e0e049e815903dac8c52e12ae6212103e9002206f0dd14ea44db.jar"
          4⤵
          • Creates scheduled task(s)
          PID:5052
      • 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\ed41f1a75fc6e0e049e815903dac8c52e12ae6212103e9002206f0dd14ea44db.jar"
        3⤵
        • Loads dropped DLL
        PID:4008
  • 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=3512 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:5444

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      46B

      MD5

      24bdd10440a808270b64814498bfdd89

      SHA1

      a3e364628e2b3fe41bf4f1b5a5ba7a1b3f269058

      SHA256

      d4a17a93cc3a64ee69b0864e05972b80ab7b1a95253c1f5bb794c04bb40ef320

      SHA512

      162afef0f06c4bee5fe5b1e13d62af118edcafb0b23cbafb8d40c70b2627a126da0ef01d2445f3b873254692a1e6562423455e50041fb06eb793d7ec985719a4

    • C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna666668461595285144.dll

      Filesize

      241KB

      MD5

      e02979ecd43bcc9061eb2b494ab5af50

      SHA1

      3122ac0e751660f646c73b10c4f79685aa65c545

      SHA256

      a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

      SHA512

      1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

    • C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-3808065738-1666277613-1125846146-1000\83aa4cc77f591dfc2374580bbd95f6ba_2397ee06-28fe-4eaa-8777-f7014368c353

      Filesize

      45B

      MD5

      c8366ae350e7019aefc9d1e6e6a498c6

      SHA1

      5731d8a3e6568a5f2dfbbc87e3db9637df280b61

      SHA256

      11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

      SHA512

      33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

    • C:\Users\Admin\ed41f1a75fc6e0e049e815903dac8c52e12ae6212103e9002206f0dd14ea44db.jar

      Filesize

      208KB

      MD5

      4a8fb5a583ce8359221745c1962bfdcc

      SHA1

      27165892e02294dcf85c24ff9b942fdecabfd145

      SHA256

      ed41f1a75fc6e0e049e815903dac8c52e12ae6212103e9002206f0dd14ea44db

      SHA512

      8a8fca2a416892b560ea7b80c0045976a51469067539a640a3c2caa0eca682243c3ea4e86d186114bebdbb6e957887a8ea9ea92846d6d30aa37c5b1da129cbeb

    • 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/4008-294-0x000001952A2D0000-0x000001952A2D1000-memory.dmp

      Filesize

      4KB

    • memory/4508-240-0x000001A5B48E0000-0x000001A5B48E1000-memory.dmp

      Filesize

      4KB

    • memory/4620-142-0x0000018C00370000-0x0000018C00380000-memory.dmp

      Filesize

      64KB

    • memory/4620-152-0x0000018C00460000-0x0000018C00470000-memory.dmp

      Filesize

      64KB

    • memory/4620-27-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-26-0x0000018C002D0000-0x0000018C002E0000-memory.dmp

      Filesize

      64KB

    • memory/4620-29-0x0000018C002E0000-0x0000018C002F0000-memory.dmp

      Filesize

      64KB

    • memory/4620-35-0x0000018C00000000-0x0000018C00270000-memory.dmp

      Filesize

      2.4MB

    • memory/4620-36-0x0000018C002F0000-0x0000018C00300000-memory.dmp

      Filesize

      64KB

    • memory/4620-40-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-39-0x0000018C00300000-0x0000018C00310000-memory.dmp

      Filesize

      64KB

    • memory/4620-42-0x0000018C00310000-0x0000018C00320000-memory.dmp

      Filesize

      64KB

    • memory/4620-41-0x0000018C00270000-0x0000018C00280000-memory.dmp

      Filesize

      64KB

    • memory/4620-45-0x0000018C00320000-0x0000018C00330000-memory.dmp

      Filesize

      64KB

    • memory/4620-44-0x0000018C00280000-0x0000018C00290000-memory.dmp

      Filesize

      64KB

    • memory/4620-50-0x0000018C00340000-0x0000018C00350000-memory.dmp

      Filesize

      64KB

    • memory/4620-49-0x0000018C00330000-0x0000018C00340000-memory.dmp

      Filesize

      64KB

    • memory/4620-57-0x0000018C00370000-0x0000018C00380000-memory.dmp

      Filesize

      64KB

    • memory/4620-56-0x0000018C00360000-0x0000018C00370000-memory.dmp

      Filesize

      64KB

    • memory/4620-55-0x0000018C00350000-0x0000018C00360000-memory.dmp

      Filesize

      64KB

    • memory/4620-54-0x0000018C002A0000-0x0000018C002B0000-memory.dmp

      Filesize

      64KB

    • memory/4620-48-0x0000018C00290000-0x0000018C002A0000-memory.dmp

      Filesize

      64KB

    • memory/4620-63-0x0000018C00380000-0x0000018C00390000-memory.dmp

      Filesize

      64KB

    • memory/4620-62-0x0000018C002B0000-0x0000018C002C0000-memory.dmp

      Filesize

      64KB

    • memory/4620-66-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-67-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-156-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-72-0x0000018C002C0000-0x0000018C002D0000-memory.dmp

      Filesize

      64KB

    • memory/4620-78-0x0000018C003A0000-0x0000018C003B0000-memory.dmp

      Filesize

      64KB

    • memory/4620-77-0x0000018C002D0000-0x0000018C002E0000-memory.dmp

      Filesize

      64KB

    • memory/4620-86-0x0000018C003B0000-0x0000018C003C0000-memory.dmp

      Filesize

      64KB

    • memory/4620-85-0x0000018C002E0000-0x0000018C002F0000-memory.dmp

      Filesize

      64KB

    • memory/4620-87-0x0000018C002F0000-0x0000018C00300000-memory.dmp

      Filesize

      64KB

    • memory/4620-91-0x0000018C003C0000-0x0000018C003D0000-memory.dmp

      Filesize

      64KB

    • memory/4620-94-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-100-0x0000018C00300000-0x0000018C00310000-memory.dmp

      Filesize

      64KB

    • memory/4620-101-0x0000018C003D0000-0x0000018C003E0000-memory.dmp

      Filesize

      64KB

    • memory/4620-153-0x0000018C00450000-0x0000018C00460000-memory.dmp

      Filesize

      64KB

    • memory/4620-119-0x0000018C003F0000-0x0000018C00400000-memory.dmp

      Filesize

      64KB

    • memory/4620-116-0x0000018C003E0000-0x0000018C003F0000-memory.dmp

      Filesize

      64KB

    • memory/4620-128-0x0000018C00420000-0x0000018C00430000-memory.dmp

      Filesize

      64KB

    • memory/4620-127-0x0000018C00340000-0x0000018C00350000-memory.dmp

      Filesize

      64KB

    • memory/4620-126-0x0000018C00330000-0x0000018C00340000-memory.dmp

      Filesize

      64KB

    • memory/4620-125-0x0000018C00410000-0x0000018C00420000-memory.dmp

      Filesize

      64KB

    • memory/4620-122-0x0000018C00400000-0x0000018C00410000-memory.dmp

      Filesize

      64KB

    • memory/4620-136-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-135-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-134-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-121-0x0000018C00320000-0x0000018C00330000-memory.dmp

      Filesize

      64KB

    • memory/4620-115-0x0000018C00310000-0x0000018C00320000-memory.dmp

      Filesize

      64KB

    • memory/4620-138-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-140-0x0000018C00350000-0x0000018C00360000-memory.dmp

      Filesize

      64KB

    • memory/4620-143-0x0000018C00430000-0x0000018C00440000-memory.dmp

      Filesize

      64KB

    • memory/4620-24-0x0000018C002C0000-0x0000018C002D0000-memory.dmp

      Filesize

      64KB

    • memory/4620-141-0x0000018C00360000-0x0000018C00370000-memory.dmp

      Filesize

      64KB

    • memory/4620-145-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-146-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-154-0x0000018C00390000-0x0000018C003A0000-memory.dmp

      Filesize

      64KB

    • memory/4620-73-0x0000018C00390000-0x0000018C003A0000-memory.dmp

      Filesize

      64KB

    • memory/4620-23-0x0000018C002B0000-0x0000018C002C0000-memory.dmp

      Filesize

      64KB

    • memory/4620-106-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-151-0x0000018C00440000-0x0000018C00450000-memory.dmp

      Filesize

      64KB

    • memory/4620-150-0x0000018C00380000-0x0000018C00390000-memory.dmp

      Filesize

      64KB

    • memory/4620-161-0x0000018C003A0000-0x0000018C003B0000-memory.dmp

      Filesize

      64KB

    • memory/4620-171-0x0000018C00490000-0x0000018C004A0000-memory.dmp

      Filesize

      64KB

    • memory/4620-170-0x0000018C003B0000-0x0000018C003C0000-memory.dmp

      Filesize

      64KB

    • memory/4620-169-0x0000018C004A0000-0x0000018C004B0000-memory.dmp

      Filesize

      64KB

    • memory/4620-168-0x0000018C00480000-0x0000018C00490000-memory.dmp

      Filesize

      64KB

    • memory/4620-167-0x0000018C00470000-0x0000018C00480000-memory.dmp

      Filesize

      64KB

    • memory/4620-162-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-181-0x0000018C003D0000-0x0000018C003E0000-memory.dmp

      Filesize

      64KB

    • memory/4620-180-0x0000018C004C0000-0x0000018C004D0000-memory.dmp

      Filesize

      64KB

    • memory/4620-179-0x0000018C004B0000-0x0000018C004C0000-memory.dmp

      Filesize

      64KB

    • memory/4620-178-0x0000018C003C0000-0x0000018C003D0000-memory.dmp

      Filesize

      64KB

    • memory/4620-184-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-186-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-187-0x0000018C00000000-0x0000018C00270000-memory.dmp

      Filesize

      2.4MB

    • memory/4620-192-0x0000018C002B0000-0x0000018C002C0000-memory.dmp

      Filesize

      64KB

    • memory/4620-219-0x0000018C004A0000-0x0000018C004B0000-memory.dmp

      Filesize

      64KB

    • memory/4620-218-0x0000018C00480000-0x0000018C00490000-memory.dmp

      Filesize

      64KB

    • memory/4620-217-0x0000018C00490000-0x0000018C004A0000-memory.dmp

      Filesize

      64KB

    • memory/4620-216-0x0000018C00380000-0x0000018C00390000-memory.dmp

      Filesize

      64KB

    • memory/4620-215-0x0000018C00460000-0x0000018C00470000-memory.dmp

      Filesize

      64KB

    • memory/4620-214-0x0000018C00440000-0x0000018C00450000-memory.dmp

      Filesize

      64KB

    • memory/4620-213-0x0000018C00430000-0x0000018C00440000-memory.dmp

      Filesize

      64KB

    • memory/4620-212-0x0000018C00410000-0x0000018C00420000-memory.dmp

      Filesize

      64KB

    • memory/4620-211-0x0000018C00420000-0x0000018C00430000-memory.dmp

      Filesize

      64KB

    • memory/4620-210-0x0000018C00400000-0x0000018C00410000-memory.dmp

      Filesize

      64KB

    • memory/4620-209-0x0000018C003F0000-0x0000018C00400000-memory.dmp

      Filesize

      64KB

    • memory/4620-208-0x0000018C003E0000-0x0000018C003F0000-memory.dmp

      Filesize

      64KB

    • memory/4620-207-0x0000018C003A0000-0x0000018C003B0000-memory.dmp

      Filesize

      64KB

    • memory/4620-206-0x0000018C00390000-0x0000018C003A0000-memory.dmp

      Filesize

      64KB

    • memory/4620-205-0x0000018C00450000-0x0000018C00460000-memory.dmp

      Filesize

      64KB

    • memory/4620-204-0x0000018C00370000-0x0000018C00380000-memory.dmp

      Filesize

      64KB

    • memory/4620-203-0x0000018C00360000-0x0000018C00370000-memory.dmp

      Filesize

      64KB

    • memory/4620-202-0x0000018C00350000-0x0000018C00360000-memory.dmp

      Filesize

      64KB

    • memory/4620-201-0x0000018C00340000-0x0000018C00350000-memory.dmp

      Filesize

      64KB

    • memory/4620-200-0x0000018C00330000-0x0000018C00340000-memory.dmp

      Filesize

      64KB

    • memory/4620-199-0x0000018C00320000-0x0000018C00330000-memory.dmp

      Filesize

      64KB

    • memory/4620-198-0x0000018C00310000-0x0000018C00320000-memory.dmp

      Filesize

      64KB

    • memory/4620-197-0x0000018C00300000-0x0000018C00310000-memory.dmp

      Filesize

      64KB

    • memory/4620-196-0x0000018C002F0000-0x0000018C00300000-memory.dmp

      Filesize

      64KB

    • memory/4620-195-0x0000018C002E0000-0x0000018C002F0000-memory.dmp

      Filesize

      64KB

    • memory/4620-194-0x0000018C002D0000-0x0000018C002E0000-memory.dmp

      Filesize

      64KB

    • memory/4620-193-0x0000018C002C0000-0x0000018C002D0000-memory.dmp

      Filesize

      64KB

    • memory/4620-20-0x0000018C002A0000-0x0000018C002B0000-memory.dmp

      Filesize

      64KB

    • memory/4620-18-0x0000018C00290000-0x0000018C002A0000-memory.dmp

      Filesize

      64KB

    • memory/4620-17-0x0000018C00280000-0x0000018C00290000-memory.dmp

      Filesize

      64KB

    • memory/4620-14-0x0000018C00270000-0x0000018C00280000-memory.dmp

      Filesize

      64KB

    • memory/4620-11-0x0000018C786C0000-0x0000018C786C1000-memory.dmp

      Filesize

      4KB

    • memory/4620-2-0x0000018C00000000-0x0000018C00270000-memory.dmp

      Filesize

      2.4MB

    • memory/4620-191-0x0000018C002A0000-0x0000018C002B0000-memory.dmp

      Filesize

      64KB

    • memory/4620-190-0x0000018C00290000-0x0000018C002A0000-memory.dmp

      Filesize

      64KB

    • memory/4620-189-0x0000018C00280000-0x0000018C00290000-memory.dmp

      Filesize

      64KB

    • memory/4620-188-0x0000018C00270000-0x0000018C00280000-memory.dmp

      Filesize

      64KB