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Analysis

  • max time kernel
    138s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/10/2024, 21:09

General

  • Target

    5ed4e8f8ca033175393d16144c99a9e6adbbfeb5dbe24b6bdac83dde2b651dbaN.exe

  • Size

    91KB

  • MD5

    728b97f63b71df9efe6bd1da5bcc2650

  • SHA1

    d9ed86dbe14b55d900ba84ad4668f0df1671f43c

  • SHA256

    5ed4e8f8ca033175393d16144c99a9e6adbbfeb5dbe24b6bdac83dde2b651dba

  • SHA512

    bb2ba4919d82202d5211f117e77c666ffbc2e4b04483ace2714d3d0d3cc6545d91b3ff77bc5666a21a42bae07e5d22e692a4392cea83c40602b838c985a75e61

  • SSDEEP

    1536:1AwEmBT4JzRJwEeUW7f12xULgJziAwEmBT4JzRJwEeUW7f12xULgJzA:1Gml41LBu7f1WNiGml41LBu7f1WNA

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Disables RegEdit via registry modification 2 IoCs
  • Disables use of System Restore points 1 TTPs
  • Executes dropped EXE 7 IoCs
  • Modifies system executable filetype association 2 TTPs 13 IoCs
  • Adds Run key to start application 2 TTPs 5 IoCs
  • Drops file in System32 directory 6 IoCs
  • Drops file in Windows directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Modifies Control Panel 4 IoCs
  • Modifies registry class 15 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • System policy modification 1 TTPs 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5ed4e8f8ca033175393d16144c99a9e6adbbfeb5dbe24b6bdac83dde2b651dbaN.exe
    "C:\Users\Admin\AppData\Local\Temp\5ed4e8f8ca033175393d16144c99a9e6adbbfeb5dbe24b6bdac83dde2b651dbaN.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Modifies visibility of file extensions in Explorer
    • Modifies visiblity of hidden/system files in Explorer
    • Disables RegEdit via registry modification
    • Modifies system executable filetype association
    • Adds Run key to start application
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:4116
    • C:\Windows\xk.exe
      C:\Windows\xk.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3828
    • C:\Windows\SysWOW64\IExplorer.exe
      C:\Windows\system32\IExplorer.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:5048
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:1964
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3528
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4548
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4312
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2132

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\WINDOWS\CSRSS.EXE

    Filesize

    91KB

    MD5

    65017dcca8cea7235d260ee8ff95607b

    SHA1

    65848406e64408cc0141b9e595f344f34e7a2c33

    SHA256

    c9092bf42a413c3e29d12082c73a08a5c43db3eea89f7106a04d8d8032334333

    SHA512

    9355d38dadd9455e8a8e3be488411f7340d054771fa545e6ee1dee3b60ab8af30be36e3131d68c32de61b8128826e71432fd94bc208e18758986553acedbfa33

  • C:\Users\Admin\AppData\Local\WINDOWS\LSASS.EXE

    Filesize

    91KB

    MD5

    093240da19bde61fa614b5daa5546593

    SHA1

    a2b9c934ae375490716f04eb42a0349df75fb518

    SHA256

    d7c52812b71fa5f27b2325d5fbdb8bbd152ca950d58f60fc69d3b714549863a2

    SHA512

    9d620b8c70ff640144b7d3ffa622fe0a444953db7181a5c523b60c56999e5473b7c41a931204ad7888046bac3102f14f4bf8fab9160d517ed6bbb91c21abd14f

  • C:\Users\Admin\AppData\Local\WINDOWS\SERVICES.EXE

    Filesize

    91KB

    MD5

    10cbb443be8ff93ecf7e4ff0b34b96ec

    SHA1

    370f4da1bb2ee87a707b05f827988f117a96eba9

    SHA256

    f673c6c80e0b814a70c346cd2975d1248785feadba44785ed7cec90ce7e8a526

    SHA512

    e923c4bce2fe6fd6182306f94b4b46e7f5314969d5b05a7277bc9d5d149147c147fd6433744183e4bd3b945fb44ba24c51d8e03d9de806913ab1b50a70a016af

  • C:\Users\Admin\AppData\Local\WINDOWS\SMSS.EXE

    Filesize

    91KB

    MD5

    111467c45ea3dfd616ae26c1b5d7fc1a

    SHA1

    92e9ec95c1c24d5172e35127c042fb8bfc200d0e

    SHA256

    4e90ee6588e0c72fe93bc43d20811e25614f0d4ec90e2826c08064a366fcf5db

    SHA512

    9d7bb2fd1a440ba45c78c520cb0d5344099851d1d72abdbb21e257272e6e49a272322a628e5b89ff7abaee39bad183ed54aa6d3e3abbf5dd0794b8e86ba27a51

  • C:\Users\Admin\AppData\Local\winlogon.exe

    Filesize

    91KB

    MD5

    728b97f63b71df9efe6bd1da5bcc2650

    SHA1

    d9ed86dbe14b55d900ba84ad4668f0df1671f43c

    SHA256

    5ed4e8f8ca033175393d16144c99a9e6adbbfeb5dbe24b6bdac83dde2b651dba

    SHA512

    bb2ba4919d82202d5211f117e77c666ffbc2e4b04483ace2714d3d0d3cc6545d91b3ff77bc5666a21a42bae07e5d22e692a4392cea83c40602b838c985a75e61

  • C:\Windows\SysWOW64\IExplorer.exe

    Filesize

    91KB

    MD5

    ac05439e2ffe326ca301c440a7d424df

    SHA1

    fb48ce41a4e5e5beff8334529cc8af24d24cc704

    SHA256

    935c225040ded17427d9963e1630d723c23917715482596eeec07ddeb301b7c1

    SHA512

    8eab1da77f4bf66f7f5032575eb4454a374338fd2ef8293497423501826cb3c13aa22b8e32b2e6be42ea9737e30fdec22e73ca016c3e0378c50f5426779260de

  • C:\Windows\xk.exe

    Filesize

    91KB

    MD5

    4b928204cec9dc5461ab3773953f7131

    SHA1

    26c635ea566248d6ca479c0a69c226b1b74b25c1

    SHA256

    06c0322e9e89c37af46b6aca19ab78a8d78eb924183c038e3894369e7294760a

    SHA512

    0e1404379e072e46bf929870d9400c6ec849824c11226f02b3604ebd973696e9fcdb5aa933f5f2420749edcac2e6a55f1963f39af67f9cc477b96e06cb53b106

  • memory/1964-123-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1964-126-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/2132-155-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/3528-133-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/3828-113-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4116-0-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4116-156-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4312-148-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4548-137-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4548-141-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/5048-121-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB