Analysis

  • max time kernel
    94s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/09/2024, 03:06

General

  • Target

    ebcf85d3606c5c9acd6fb8f8a31338640e429dad236809daa4d138671e2533a3.exe

  • Size

    91KB

  • MD5

    124dd158fb485bd536ab348c936ae372

  • SHA1

    5d1b43ce2d772c0d91a91d68caee58e03434a761

  • SHA256

    ebcf85d3606c5c9acd6fb8f8a31338640e429dad236809daa4d138671e2533a3

  • SHA512

    4d23561cbd2f81a572f5f18f51058534acc59c0557da6b3c05f4faa3a0017bc3eb491de654b7b734ec8c0adb8935159e1ba11d7e3f987bd83b1fd79372cb9068

  • SSDEEP

    1536:XRsjdLaslqdBXvTUL0Hnouy8VjoRsjdLaslqdBXvTUL0Hnouy8VjK:XOJKqsout9oOJKqsout9K

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
  • UPX packed file 17 IoCs

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

  • 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\ebcf85d3606c5c9acd6fb8f8a31338640e429dad236809daa4d138671e2533a3.exe
    "C:\Users\Admin\AppData\Local\Temp\ebcf85d3606c5c9acd6fb8f8a31338640e429dad236809daa4d138671e2533a3.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:1444
    • C:\Windows\xk.exe
      C:\Windows\xk.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:376
    • 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:4552
    • 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:4352
    • 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:1620
    • 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:3048
    • 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:716
    • 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:5100

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    91KB

    MD5

    41e53d171864632decf027cc582378e1

    SHA1

    2afb448f40285f6312d0b2cba76ac054d065f1b0

    SHA256

    8c16f833ed0b7fc1e74e70f9ec31656fb4152f2af42e76c871767f200a013b58

    SHA512

    e5dd608456bb25136ed4933c9518b00e69f172bddb10268a07c414c6509399e43d8934b598fffeb8107c8676060fdb33dd82815236724af94b3e476496476dd2

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

    Filesize

    91KB

    MD5

    5eb2b120703065404ff487b8c53bce64

    SHA1

    108d7c41d71d873487bc6e2168e233033e8a8ad5

    SHA256

    e12e53627fcd18d43df51b8305e1b24fb47d16eee3f3fb1bb40f5d8bd5c85661

    SHA512

    6e25a40b108dfcdfe4969d11c12f3e0f47b742d439b0ff84804e4b8a338ab6fddde1c422249be2d0eff98c7f1a9f8035270137d5cde4b2c73882cd1acf6dde44

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

    Filesize

    91KB

    MD5

    89719e2970f8a364000695ec07e90227

    SHA1

    e27ade254c2269562e241f4084d197d559b1a7c0

    SHA256

    7bc0647e72e3eb1d331ec8f24f253befa795c9d26a8eadf278d31d5fe088e1ba

    SHA512

    f617810037b3c998de70e3550ea6d1b1001e8279d2d7b9fdd5d844fc5a637e5adb437fe6656671b99795ee7cfeb4cf7742c85c1e9c16c67633de49592386d2d2

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

    Filesize

    91KB

    MD5

    8fcde5b643ab06417334105acc87af51

    SHA1

    e4898219dd1aa1dcb9b58b8f92e37ee9101722a0

    SHA256

    ab81afb735efa6472d4d70ab45f6382da902fe459d6378c2d2ede51aeb9c239b

    SHA512

    af4749ba56717e209712fe085febc05c72066cb4d86164daa3b88072eb6ef904fcd99d9aab83843965e19c30737b2addd077a32a306905f9d2a575345929c0d4

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

    Filesize

    91KB

    MD5

    1f7c153a688b110f9c9cecce754470d7

    SHA1

    9233c176374ecf74e327cdaebc7774fabc7772e9

    SHA256

    36cd4019d21747a9e046edaf9c53f5e5d87df87dc9fe32fdbf44252a3edee44a

    SHA512

    f07247f985b9512c5ffb90345963ea295d4fb02ea87391934f5a72cb83a5a2a9523926f4aed52c956601af03e8b5b5bf2cc33a56eb887b7a53e662968d463d44

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

    Filesize

    91KB

    MD5

    124dd158fb485bd536ab348c936ae372

    SHA1

    5d1b43ce2d772c0d91a91d68caee58e03434a761

    SHA256

    ebcf85d3606c5c9acd6fb8f8a31338640e429dad236809daa4d138671e2533a3

    SHA512

    4d23561cbd2f81a572f5f18f51058534acc59c0557da6b3c05f4faa3a0017bc3eb491de654b7b734ec8c0adb8935159e1ba11d7e3f987bd83b1fd79372cb9068

  • C:\Windows\SysWOW64\IExplorer.exe

    Filesize

    91KB

    MD5

    c7670d5448ef9ee171abd1c435731da2

    SHA1

    fd9e206af4f6fd681fd6ac4abedc3076fcdc3c38

    SHA256

    54cc105272712a57ad2ebae5f3888ebed0c72a011ed92fac39a9f0efe7b4c383

    SHA512

    805aecd25044eed5bacd9a4df645cd1950372a6bacb1c9c1be77bc06fb91149e3e4d84cc743ffcf1255b7a71792a2f667153d98f17d18aa7a80a97ce403a49b8

  • C:\Windows\xk.exe

    Filesize

    91KB

    MD5

    b9c79ac3a0c1817ae2474227683bded0

    SHA1

    0130f30b9b192dcd46a8490f69db74f26bff2ff7

    SHA256

    5687a438d103315c28425c6078427f038f028bb30d3c4f7f3c37107fdd633021

    SHA512

    beccc8281dd927dfb268b5cf029f3ae442d45bdeb01daafda7103f97435d12c3140999bac85fa87b17a33e85e43bdce068af024a2315f40a1d4df632a131bbd9

  • memory/376-110-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/716-143-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/1444-152-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/1444-0-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/1620-132-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/3048-137-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/4352-124-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/4552-117-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/5100-150-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB