Analysis

  • max time kernel
    179s
  • max time network
    192s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250314-en
  • resource tags

    arch:x64arch:x86image:win11-20250314-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    22/03/2025, 09:22

Errors

Reason
Machine shutdown

General

  • Target

    pisun.exe

  • Size

    54KB

  • MD5

    45140e967970cd63521eaa76dc4db7d7

  • SHA1

    aae8aa4c5fb8e1d5a830f1f095d7550a89b7634a

  • SHA256

    3990ab6d73f0a92606cb4c86d39e077f014da65413a264be94d03ca8478e64b8

  • SHA512

    d8c5274fc1c66700c3fb63527973cb20106070698eebdf90e6b3f9ace371e34a653e382f949683d9aab0cb33fdd00ab2b943e499a4d2d6f42a24822fa2142129

  • SSDEEP

    768:U8I0g652Esltuq55JR2ET3NwJSNbxWQG35bmaePD5PvXOC2XXJdxIEpmvg:U8ZVGtZ5DTCGlWQcGD0LX3xIEpmvg

Malware Config

Signatures

  • Njrat family
  • UAC bypass 3 TTPs 1 IoCs
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Event Triggered Execution: Image File Execution Options Injection 1 TTPs 4 IoCs
  • Executes dropped EXE 11 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • UPX packed file 7 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs
  • System policy modification 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\pisun.exe
    "C:\Users\Admin\AppData\Local\Temp\pisun.exe"
    1⤵
    • Writes to the Master Boot Record (MBR)
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:5940
    • C:\Users\Admin\AppData\Local\Temp\a34b3bf600ba42c48b93755d1520d114.exe
      "C:\Users\Admin\AppData\Local\Temp\a34b3bf600ba42c48b93755d1520d114.exe"
      2⤵
      • Executes dropped EXE
      PID:5680
    • C:\Users\Admin\AppData\Local\Temp\0e4593201ff1496c9c2690eb96b149ea.exe
      "C:\Users\Admin\AppData\Local\Temp\0e4593201ff1496c9c2690eb96b149ea.exe"
      2⤵
      • Executes dropped EXE
      PID:4836
    • C:\Users\Admin\AppData\Local\Temp\6e4cc25bbf1e4b5ba7ff5fa5747064e1.exe
      "C:\Users\Admin\AppData\Local\Temp\6e4cc25bbf1e4b5ba7ff5fa5747064e1.exe"
      2⤵
      • Executes dropped EXE
      PID:4388
    • C:\Users\Admin\AppData\Local\Temp\cb74eaf3608c487db60a0841faf30d3b.exe
      "C:\Users\Admin\AppData\Local\Temp\cb74eaf3608c487db60a0841faf30d3b.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5644
      • C:\Users\Admin\AppData\Local\Temp\huii.exe
        "C:\Users\Admin\AppData\Local\Temp\huii.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4392
        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\hui.exe
          "C:\Users\Admin\AppData\Local\Temp\RarSFX0\hui.exe" xui2
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:440
    • C:\Users\Admin\AppData\Local\Temp\6abb5cb471664612a9b64bd6f1fd0465.exe
      "C:\Users\Admin\AppData\Local\Temp\6abb5cb471664612a9b64bd6f1fd0465.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4600
    • C:\Users\Admin\AppData\Local\Temp\d14df2d33aae449086f2a088ed4c67a9.exe
      "C:\Users\Admin\AppData\Local\Temp\d14df2d33aae449086f2a088ed4c67a9.exe"
      2⤵
      • Executes dropped EXE
      PID:240
    • C:\Users\Admin\AppData\Local\Temp\9308118ad08d453fa45aa3a69e4047b1.exe
      "C:\Users\Admin\AppData\Local\Temp\9308118ad08d453fa45aa3a69e4047b1.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2808
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\46f43196e52442b49872b60eb18bddc6.txt
      2⤵
      • System Location Discovery: System Language Discovery
      • Opens file in notepad (likely ransom note)
      PID:3144
    • C:\Users\Admin\AppData\Local\Temp\311a64c6e4374fc4bdf87748bec6524d.exe
      "C:\Users\Admin\AppData\Local\Temp\311a64c6e4374fc4bdf87748bec6524d.exe"
      2⤵
      • UAC bypass
      • Event Triggered Execution: Image File Execution Options Injection
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Writes to the Master Boot Record (MBR)
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:5360
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c TASKKILL /F /FI "Imagename ne 311a64c6e4374fc4bdf87748bec6524d.exe" /FI "USERNAME eq %USERNAME%
        3⤵
          PID:5868
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x00000000000004DC 0x00000000000004E8
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3764
    • C:\Users\Admin\AppData\Local\Temp\311a64c6e4374fc4bdf87748bec6524d.exe
      C:\Users\Admin\AppData\Local\Temp\311a64c6e4374fc4bdf87748bec6524d.exe explorer.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:1748

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\311a64c6e4374fc4bdf87748bec6524d.exe

      Filesize

      1.7MB

      MD5

      6e628c5531010f1053fff090a7699659

      SHA1

      237e5b8870092dd0e9a3b0fb76da93fcfce56516

      SHA256

      52d65a486dd027d9d6e3ca10ea808815ff0fda4e5032695333b7c2d5a5f95e41

      SHA512

      53eb023d70038b2820a6c0ed0a453307f90b22279e521fa8af3b6ef240ce022300a1d05794bf02d52f472c5adeb87c814373c5e29b3f13102c0128af06d5f0e7

    • C:\Users\Admin\AppData\Local\Temp\46f43196e52442b49872b60eb18bddc6.txt

      Filesize

      169B

      MD5

      2686c326a963fe516ed579c6024ee17b

      SHA1

      5522bcac346204ac26d0ef6ba643aad21af5abf9

      SHA256

      969498f939a373380c0d59996434685f0b61294d1f6245c7d74be6cb4d864f53

      SHA512

      ec3b807650d63bcaa89ed2d6a6cc411d1bdbac88e5cae478fddb58a190b1352540fd47316eb677f13218f780253048875fb45c6a2902f70f7cb2690c615e6c76

    • C:\Users\Admin\AppData\Local\Temp\6abb5cb471664612a9b64bd6f1fd0465.exe

      Filesize

      20KB

      MD5

      19796e0d82a76be6dafa5cb7b80e2506

      SHA1

      ce7d0842683febfbc4e52278a25f75e29ccf6155

      SHA256

      65d4c633bf347ed4766dbb6e003776a017ccb632d73c6138c3e880a94c114c2d

      SHA512

      049111891524683fd63036355f02006ca1fd69478aa9597050f1bbeda256b25ce9f28684df80d169d50dcc01a8cbdb17e78b82ea4d49d71b9ee72588bd1e6fbb

    • C:\Users\Admin\AppData\Local\Temp\9308118ad08d453fa45aa3a69e4047b1.exe

      Filesize

      135KB

      MD5

      c971c68b4e58ccc82802b21ae8488bc7

      SHA1

      7305f3a0a0a0d489e0bcf664353289f61556de77

      SHA256

      cede0b15d88c20bc750b516858f8bf31ee472f6cbd01640840890736c4333cce

      SHA512

      ff199691c35f2748772410bf454e8b76dd67d892dd76fc87d20b3bbe6c145c6af1685344de636326692df792f55d0fba9a0025a7cf491d0b4e73ff45c3b039d7

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\hui.exe

      Filesize

      5KB

      MD5

      17b935ed6066732a76bed69867702e4b

      SHA1

      23f28e3374f9d0e03d45843b28468aace138e71c

      SHA256

      e60353b37f785c77e1063ac44cba792e9ec69f27b1dc9f3b719280d5ce015cc0

      SHA512

      774ea047cdc5f008df03ad67242df04d630bb962bc99f1ea8974a21baf6a902c7a5d8b8d09d9e5c7d7e46b0378c7baf33bf80fb3e34777cd0958b8fc740d0318

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\xui2.cur

      Filesize

      4KB

      MD5

      c1fd2feb9e2b56be00082dd06c2b9658

      SHA1

      6e9272d5d53272f901ebb75ea556e250d4fc54aa

      SHA256

      de7c8bd93cc576d719805835099ae0f2cb88d797fe71585e2f7eb56b67a8fb72

      SHA512

      7530ad40f0adc93d5166b2b4741ba66bc5792ca1882be658b86b290feaa3ccf08f15ef0d55cc40494c6f3fedb78ecc5dab2a5342e0bdc85a068a3a0ffdc6e79a

    • C:\Users\Admin\AppData\Local\Temp\a34b3bf600ba42c48b93755d1520d114.exe

      Filesize

      844KB

      MD5

      8cac1595b184f66d7a122af38d5dfe71

      SHA1

      e0bc0162472edf77a05134e77b540663ac050ab6

      SHA256

      00201a2fd4916193c9c7bbba7be6a77fa5876085480b67da4e1228fd8b23ae5f

      SHA512

      88d3753ce73bbf95ee1fdbdff21eb9331e59ca92cfa5c489f141c07dc90871e3032e331c9dd77b1fec4522add3ac25c51d5c699d7801a5343dd2ae447c60f8f8

    • C:\Users\Admin\AppData\Local\Temp\cb74eaf3608c487db60a0841faf30d3b.exe

      Filesize

      323KB

      MD5

      c76b0867436829232609a7f6c786c37c

      SHA1

      06d88a277a77db9494feca72c31a35af3f83a4f8

      SHA256

      3c399e4c4826de5f378e1da9a9e54c29bf8d557aae01f53d307c4bf565d03194

      SHA512

      9047a8ac3a2795c73e5650ce37d0595798532579ca4013f2498e9641796d9814aba1d138812ee28135edd4b48843f58063c278511c4279ee3afbd422a683359d

    • C:\Users\Admin\AppData\Local\Temp\d14df2d33aae449086f2a088ed4c67a9.exe

      Filesize

      2.3MB

      MD5

      782f6274654b584ff6d51ca55032f818

      SHA1

      d6d8d66c9d204ea5455e366b4047e713e471dceb

      SHA256

      7b44b3e5c2decf0b20a4dcc3b1437bff44c0d0fb78224dc690c190f844927664

      SHA512

      ed47e666a42b28250061f4d63d90fb03705f09889539fbaf936ca35afa7d0b35bad3c7edc2091d74ca1d99ef380dc478e352e0ad4e2aa81ae0552a6b85f9b2e8

    • C:\Users\Admin\AppData\Local\Temp\huii.exe

      Filesize

      313KB

      MD5

      c125391f5a989f964548e45decc7490e

      SHA1

      08906a336b65dbb61cfc0b95f11315f18a5301f8

      SHA256

      acc6fecd839b1de178b5d17525b3764fb7511e589ae04f6217666e869cacce91

      SHA512

      9a6b36c78b9016f662124f4761d4ad42965748259fba7f8fc59730d0fbd63b151ff34b650019645fe845659ea024e9a9f173c55427aced781b5e5a6938b8dd3d

    • C:\Users\Admin\AppData\Roaming\Microsoft\Speech\Files\UserLexicons\SP_AEFD5F33138B42C68DD2EE240F6B3263.dat

      Filesize

      940B

      MD5

      c700c0957bef79b17aebc82446080daa

      SHA1

      6b7934d38333fd90a433234858da5808cd007446

      SHA256

      ce38c6dfe8b8952d16789059c1e61a7da6e5b4b48a481b4b270bb154983d0c67

      SHA512

      e0ebd2b654eea9b506a5b24e3bcffaad942e756ec54070c35a53bfd6118b6922be1c196e62d5cb7787d9770754cc9a49b88abdd939bf16c65bfae9ed0fc4d7f7

    • memory/240-120-0x0000000000400000-0x0000000000582000-memory.dmp

      Filesize

      1.5MB

    • memory/440-97-0x0000000000940000-0x0000000000948000-memory.dmp

      Filesize

      32KB

    • memory/1748-149-0x0000000000400000-0x00000000006D8000-memory.dmp

      Filesize

      2.8MB

    • memory/1748-151-0x0000000000400000-0x00000000006D8000-memory.dmp

      Filesize

      2.8MB

    • memory/4836-64-0x00007FFA06BD0000-0x00007FFA07571000-memory.dmp

      Filesize

      9.6MB

    • memory/4836-37-0x00007FFA06BD0000-0x00007FFA07571000-memory.dmp

      Filesize

      9.6MB

    • memory/4836-38-0x00007FFA06BD0000-0x00007FFA07571000-memory.dmp

      Filesize

      9.6MB

    • memory/5360-146-0x0000000000400000-0x00000000006D8000-memory.dmp

      Filesize

      2.8MB

    • memory/5360-171-0x0000000000400000-0x00000000006D8000-memory.dmp

      Filesize

      2.8MB

    • memory/5360-174-0x0000000000400000-0x00000000006D8000-memory.dmp

      Filesize

      2.8MB

    • memory/5360-177-0x0000000000400000-0x00000000006D8000-memory.dmp

      Filesize

      2.8MB

    • memory/5644-81-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/5680-20-0x00007FFA06BD0000-0x00007FFA07571000-memory.dmp

      Filesize

      9.6MB

    • memory/5680-21-0x000000001BFD0000-0x000000001C49E000-memory.dmp

      Filesize

      4.8MB

    • memory/5680-60-0x00007FFA06BD0000-0x00007FFA07571000-memory.dmp

      Filesize

      9.6MB

    • memory/5680-59-0x00007FFA06E85000-0x00007FFA06E86000-memory.dmp

      Filesize

      4KB

    • memory/5680-48-0x00007FFA06BD0000-0x00007FFA07571000-memory.dmp

      Filesize

      9.6MB

    • memory/5680-40-0x00007FFA06BD0000-0x00007FFA07571000-memory.dmp

      Filesize

      9.6MB

    • memory/5680-25-0x000000001C770000-0x000000001C7BC000-memory.dmp

      Filesize

      304KB

    • memory/5680-24-0x00000000014C0000-0x00000000014C8000-memory.dmp

      Filesize

      32KB

    • memory/5680-23-0x00007FFA06BD0000-0x00007FFA07571000-memory.dmp

      Filesize

      9.6MB

    • memory/5680-22-0x000000001C540000-0x000000001C5DC000-memory.dmp

      Filesize

      624KB

    • memory/5680-18-0x00007FFA06E85000-0x00007FFA06E86000-memory.dmp

      Filesize

      4KB

    • memory/5680-62-0x00007FFA06BD0000-0x00007FFA07571000-memory.dmp

      Filesize

      9.6MB

    • memory/5680-19-0x000000001BA50000-0x000000001BAF6000-memory.dmp

      Filesize

      664KB

    • memory/5940-0-0x0000000074E91000-0x0000000074E92000-memory.dmp

      Filesize

      4KB

    • memory/5940-6-0x0000000074E90000-0x0000000075441000-memory.dmp

      Filesize

      5.7MB

    • memory/5940-5-0x0000000074E90000-0x0000000075441000-memory.dmp

      Filesize

      5.7MB

    • memory/5940-4-0x0000000074E90000-0x0000000075441000-memory.dmp

      Filesize

      5.7MB

    • memory/5940-3-0x0000000074E90000-0x0000000075441000-memory.dmp

      Filesize

      5.7MB

    • memory/5940-2-0x0000000074E90000-0x0000000075441000-memory.dmp

      Filesize

      5.7MB

    • memory/5940-1-0x0000000074E90000-0x0000000075441000-memory.dmp

      Filesize

      5.7MB

    • memory/5940-180-0x0000000073A40000-0x0000000073A9B000-memory.dmp

      Filesize

      364KB

    • memory/5940-181-0x0000000073040000-0x000000007305E000-memory.dmp

      Filesize

      120KB

    • memory/5940-179-0x0000000074E90000-0x0000000075441000-memory.dmp

      Filesize

      5.7MB

    • memory/5940-178-0x0000000075480000-0x000000007550D000-memory.dmp

      Filesize

      564KB