Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    28/05/2026, 09:25

General

  • Target
    39f3d3bd2d6a905dfb8fd547720941698f4b189955620658a4323abc5c16bec3.exe
  • Size 493KB
  • Sample260528-ld3lsaby5k
  • SHA256 39f3d3bd2d6a905dfb8fd547720941698f4b189955620658a4323abc5c16bec3
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 4 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\39f3d3bd2d6a905dfb8fd547720941698f4b189955620658a4323abc5c16bec3.exe
    "C:\Users\Admin\AppData\Local\Temp\39f3d3bd2d6a905dfb8fd547720941698f4b189955620658a4323abc5c16bec3.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4160
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$a1681.bat
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4832
      • C:\Users\Admin\AppData\Local\Temp\39f3d3bd2d6a905dfb8fd547720941698f4b189955620658a4323abc5c16bec3.exe
        "C:\Users\Admin\AppData\Local\Temp\39f3d3bd2d6a905dfb8fd547720941698f4b189955620658a4323abc5c16bec3.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1012
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1012 -s 832
          4⤵
          • Program crash
          PID:4388
    • C:\Windows\Logo1_.exe
      C:\Windows\Logo1_.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4004
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3048
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4104
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1012 -ip 1012
    1⤵
      PID:4872

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          MicrosoftEdgeUpdateBroker.exe

          • Path C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.143.57\MicrosoftEdgeUpdateBroker.exe
          • Size 125KB
          • SHA256 cb652686b8fd827d8fee7dbb834c0675f7da660011079d907c855c96e8dfeaf2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          7z.exe

          • Path C:\Program Files\7-Zip\7z.exe
          • Size 575KB
          • SHA256 3f2427ae2896585a2690fc4b8df5712c27038031a359f60f785b716d343f1139
          • MD5 SHA1 SHA512 SSDEEP TLSH

          vcredist_x86.exe

          • Path C:\ProgramData\Package Cache\{61087a79-ac85-455c-934d-1fa22cc64f36}\vcredist_x86.exe
          • Size 481KB
          • SHA256 d5fbaf5c0d8e313d4dad23b28cac4256c5dbed6ab3b0d797e2971f30c5e095ad
          • MD5 SHA1 SHA512 SSDEEP TLSH

          $$a1681.bat

          • Path C:\Users\Admin\AppData\Local\Temp\$$a1681.bat
          • Size 722B
          • SHA256 d5976e533c9fb8c26dcbf57e368762ee3e481da985fd7c0a20aa88d6640d6fee
          • MD5 SHA1 SHA512 TLSH

          39f3d3bd2d6a905dfb8fd547720941698f4b189955620658a4323abc5c16bec3.exe.exe

          • Path C:\Users\Admin\AppData\Local\Temp\39f3d3bd2d6a905dfb8fd547720941698f4b189955620658a4323abc5c16bec3.exe.exe
          • Size 467KB
          • SHA256 d4ec1c2d85e9524dbede618edf56aa85f28a9d3d42d7c211f4476d60dc4049ff
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Logo1_.exe

          • Path C:\Windows\Logo1_.exe
          • Size 26KB
          • SHA256 35d1021b794bea3715cf8fde6d9226e011ee436a515675e815db389a7829917c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _desktop.ini

          • Path F:\$RECYCLE.BIN\S-1-5-21-2043432456-1617298091-2772621413-1000\_desktop.ini
          • Size 9B
          • SHA256 eb495551880bcb8ea0e05d68913bbd05fe45b2a14f467ff78323860c4b9ae1aa
          • MD5 SHA1 SHA512

          memory/1012-19-0x0000000000310000-0x000000000038C000-memory.dmp

          memory/1012-21-0x0000000004E90000-0x0000000004F22000-memory.dmp

          memory/1012-20-0x0000000005440000-0x00000000059E6000-memory.dmp

          memory/4004-1227-0x0000000000400000-0x0000000000434000-memory.dmp

          memory/4004-30-0x0000000000400000-0x0000000000434000-memory.dmp

          memory/4004-36-0x0000000000400000-0x0000000000434000-memory.dmp

          memory/4004-40-0x0000000000400000-0x0000000000434000-memory.dmp

          memory/4004-550-0x0000000000400000-0x0000000000434000-memory.dmp

          memory/4004-23-0x0000000000400000-0x0000000000434000-memory.dmp

          memory/4004-8-0x0000000000400000-0x0000000000434000-memory.dmp

          memory/4004-5008-0x0000000000400000-0x0000000000434000-memory.dmp

          memory/4004-5511-0x0000000000400000-0x0000000000434000-memory.dmp

          memory/4160-0-0x0000000000400000-0x0000000000434000-memory.dmp

          memory/4160-11-0x0000000000400000-0x0000000000434000-memory.dmp