Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    13-03-2024 02:13

General

  • Target

    374aa16abdd7a527d3500fb1d49f822263fc382706db71e0f58cc3e00045a790.jar

  • Size

    64KB

  • MD5

    575d75ecae9946950af94951bfac908e

  • SHA1

    856900c7d62b852f2f5e854f11d8b072aa3721b1

  • SHA256

    374aa16abdd7a527d3500fb1d49f822263fc382706db71e0f58cc3e00045a790

  • SHA512

    1fd705f755e348f3d69f1a32315762d23fa74857d8e697f5f2b19081bc1dd210eb70cda20534369ede70ec4a7fe33edb2d67680299b5963af7dae5f2476c259c

  • SSDEEP

    1536:4jdiIZTjmn6fVQsJ4J7gTtcMbVrHCCT3Kk/:4jwINVqsJmiVrC/k/

Malware Config

Signatures

  • STRRAT

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

  • Drops startup file 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 9 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:\Windows\system32\java.exe
    java -jar C:\Users\Admin\AppData\Local\Temp\374aa16abdd7a527d3500fb1d49f822263fc382706db71e0f58cc3e00045a790.jar
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:2924
    • C:\Windows\system32\cmd.exe
      cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\374aa16abdd7a527d3500fb1d49f822263fc382706db71e0f58cc3e00045a790.jar"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2464
      • C:\Windows\system32\schtasks.exe
        schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\374aa16abdd7a527d3500fb1d49f822263fc382706db71e0f58cc3e00045a790.jar"
        3⤵
        • Creates scheduled task(s)
        PID:2472
    • C:\Program Files\Java\jre7\bin\java.exe
      "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\374aa16abdd7a527d3500fb1d49f822263fc382706db71e0f58cc3e00045a790.jar"
      2⤵
        PID:2720

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Scheduled Task/Job

    1
    T1053

    Persistence

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    1
    T1012

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\374aa16abdd7a527d3500fb1d49f822263fc382706db71e0f58cc3e00045a790.jar
      Filesize

      64KB

      MD5

      575d75ecae9946950af94951bfac908e

      SHA1

      856900c7d62b852f2f5e854f11d8b072aa3721b1

      SHA256

      374aa16abdd7a527d3500fb1d49f822263fc382706db71e0f58cc3e00045a790

      SHA512

      1fd705f755e348f3d69f1a32315762d23fa74857d8e697f5f2b19081bc1dd210eb70cda20534369ede70ec4a7fe33edb2d67680299b5963af7dae5f2476c259c

    • memory/2720-21-0x0000000002620000-0x0000000005620000-memory.dmp
      Filesize

      48.0MB

    • memory/2720-28-0x0000000001B70000-0x0000000001B71000-memory.dmp
      Filesize

      4KB

    • memory/2720-30-0x0000000002620000-0x0000000005620000-memory.dmp
      Filesize

      48.0MB

    • memory/2924-6-0x00000000025A0000-0x00000000055A0000-memory.dmp
      Filesize

      48.0MB

    • memory/2924-10-0x0000000000340000-0x0000000000341000-memory.dmp
      Filesize

      4KB