Analysis

  • max time kernel
    152s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-10-2023 15:08

General

  • Target

    NEAS.233a45accc67e095496c140b1c23a880_JC.exe

  • Size

    42KB

  • MD5

    233a45accc67e095496c140b1c23a880

  • SHA1

    930cebac43eb6ccedf5e67a8c25e12da73f8bfa2

  • SHA256

    eb0afceba06cb531533d5eb044761fb2fdfa6b24d13cc0086a5fa19393216d17

  • SHA512

    db55e85c2928dcd27278935770dce3bf3595c82973d0ba445d0bc61b4fc7b609a46326cf5cf3c6f2a9440379fda3048da251e518851560b00eae305bce576508

  • SSDEEP

    768:fvQB/z0pqrLoyT8I+E1j+KPPIYu8T0aTsJK56VO8XM0Wns+b2znpNqPd:fODhc+yBJW0WTU5XM1nJqjp0l

Malware Config

Extracted

Family

sakula

C2

www.polarroute.com

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • Sakula payload 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 9 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.233a45accc67e095496c140b1c23a880_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.233a45accc67e095496c140b1c23a880_JC.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1684
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2328
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\NEAS.233a45accc67e095496c140b1c23a880_JC.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:504
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2748

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
    Filesize

    42KB

    MD5

    59f4145cb32e5e9d139d88146fd5d2b6

    SHA1

    0c15b59cc94a57b87867cc00569dd686c40afae6

    SHA256

    eb41fd3f7a84581c7954e5c5bfc1b0b179209d57b96cf410184f6c17ee9109e5

    SHA512

    15b9096cfc1887848e69b918330c31456cdee4220938e558e1e9b5e0c53aef95740ff090152d966907e44288363b82c048b986c24032812ad93d7f69a8d4415e

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
    Filesize

    42KB

    MD5

    59f4145cb32e5e9d139d88146fd5d2b6

    SHA1

    0c15b59cc94a57b87867cc00569dd686c40afae6

    SHA256

    eb41fd3f7a84581c7954e5c5bfc1b0b179209d57b96cf410184f6c17ee9109e5

    SHA512

    15b9096cfc1887848e69b918330c31456cdee4220938e558e1e9b5e0c53aef95740ff090152d966907e44288363b82c048b986c24032812ad93d7f69a8d4415e

  • memory/1684-0-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/1684-1-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/1684-7-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/1684-17-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/2328-5-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/2328-8-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/2328-21-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB