Analysis

  • max time kernel
    101s
  • max time network
    102s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240910-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-09-2024 06:36

General

  • Target

    53713370c4f9fb2d9280195fb93ca7764f31f4731043d7dbce6e232e8cf8edcdN.exe

  • Size

    91KB

  • MD5

    2bde5b0f373cd81f12f024a946ae3900

  • SHA1

    de17b8c314c99eddbc2e6755f6db8e1a5a9a7ed0

  • SHA256

    53713370c4f9fb2d9280195fb93ca7764f31f4731043d7dbce6e232e8cf8edcd

  • SHA512

    4b69c30e80a1b6dddb2d4ef032dcc051b6785d9eb26260d4396bf1d7d12fe9afcabaf5a362288a13ae08f3af4c930de5193f2e3907320ba43c98227568695be3

  • SSDEEP

    1536:1AwEmBT4JzRJwEeUW7f12xULgJzjAwEmBT4JzRJwEeUW7f12xULgJzV:1Gml41LBu7f1WNjGml41LBu7f1WNV

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\53713370c4f9fb2d9280195fb93ca7764f31f4731043d7dbce6e232e8cf8edcdN.exe
    "C:\Users\Admin\AppData\Local\Temp\53713370c4f9fb2d9280195fb93ca7764f31f4731043d7dbce6e232e8cf8edcdN.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:4532
    • C:\Windows\xk.exe
      C:\Windows\xk.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:1064
    • 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:4964
    • 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:2348
    • 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:4868
    • 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:220
    • 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:1232
    • 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:2280

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    91KB

    MD5

    0ba00c61288ed3062f8963d482a5df28

    SHA1

    8a0e89f2542bf39537a11ded4d27be692b193e55

    SHA256

    903e3585e137dbbf419255068481e29c732b90ecd149a3855c8e290a3fea51c0

    SHA512

    19e90dc2d15b476a2f7a5b2d0d1f35436db8cdc4a1b55de7dc7eb35819e434b27550fdb8bac64f32243c064852d92d5adb399d36bdfc7a143eecfba1b669d344

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

    Filesize

    91KB

    MD5

    497c8fa09da9c99c3a9d2327827170e8

    SHA1

    993fd72bbadf2acca18d14ca68bc8c22bdbfa493

    SHA256

    b84dc35516617518a02ab27a9166909c1d13a0157541cccf2a3ee19550058cff

    SHA512

    fe0e79003f0b41d8563f4ff9a5a46fe85aedef5c84808aa930a4098703f8c13e7bf489f415cc14488d8024e31d63725a44ad663c161c32bb0c5f244ac7437dd1

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

    Filesize

    91KB

    MD5

    d28b5d085d2f03e142c3b131d4d0f6c2

    SHA1

    a99be5440378a1c5260a5c89aee701173c77ea89

    SHA256

    3c18e8b87ee26eaba56a816c0fcf286e5b7f96a9c9a3cfcd34ea98e30a675e84

    SHA512

    fb07bcb8e2b4accb1555c992995ee3df6e69992ec9cec3fd358c690b621bd19dd801db0ae5a3324360cf803db57d5b96d9bc3254b53f19664a7138cd4e19552b

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

    Filesize

    91KB

    MD5

    8b9fa19ee3074c506c57ef2fdb94c22b

    SHA1

    87dbc8a75bb4acf8a9542d617bfc43e4e49b8d83

    SHA256

    88e06c2d0342305e2e91f96f371113a7f9843387769b7c6c71a4d4936b503b1d

    SHA512

    e5c388d6da8158168e9b5525bd55005b609c2b9f6d50e7ce5d5ee8cb88bd598e61e4e6aa316250de620eb84d4abb49711de15cb76be03b35aba0d721dedbc608

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

    Filesize

    91KB

    MD5

    4990951c66f22d35b1bddd43dd69c780

    SHA1

    19ae60058076642f86ba3235e5af6ceb660379a8

    SHA256

    3802fb01656c7c9a6953aa0b4fd63a9bced6795b80ae1cdec36c2bdef5002fae

    SHA512

    0241d9caff796b851749fbd53ffba61ca2ec11c9cfaf7a72cdd9bbcbc040a517786da22e1d4d87495152617a3cfbcf5598f4aa3f84504f3f763ee1627e542ba5

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

    Filesize

    91KB

    MD5

    2bde5b0f373cd81f12f024a946ae3900

    SHA1

    de17b8c314c99eddbc2e6755f6db8e1a5a9a7ed0

    SHA256

    53713370c4f9fb2d9280195fb93ca7764f31f4731043d7dbce6e232e8cf8edcd

    SHA512

    4b69c30e80a1b6dddb2d4ef032dcc051b6785d9eb26260d4396bf1d7d12fe9afcabaf5a362288a13ae08f3af4c930de5193f2e3907320ba43c98227568695be3

  • C:\Windows\SysWOW64\IExplorer.exe

    Filesize

    91KB

    MD5

    36ca1b269b93abe1f46fbdba507c8873

    SHA1

    3d69ae7f294a242aa284e9c22725b53b2a5de805

    SHA256

    af31a96aaea5166a6aa7bd8f2e5cbddc5351b622434494d60dfa70e833017e01

    SHA512

    3810afa4d0443810c2b9601b51ad09383025b2f61b32411d9cc34faf591f3098a521dc1d185fed6817d699be7fa3919685e20d234d93968f431bd53f1435719b

  • C:\Windows\xk.exe

    Filesize

    91KB

    MD5

    bce50e31ee733eaae0c82eb1f9b71529

    SHA1

    86c0844ec310da69eb7efc01246dc2461fa36d1a

    SHA256

    babb49ebcf9e66a2307a28383829ad61509b9a09b0a121d887a60cb75e9e5161

    SHA512

    658af18417e1281818a479c59b214fb54a6e3ba745a889ed19db1d6fd0afc064f53921ffae273a7cd2b63dd2a8ade2351f174fdb4fa091f72b2e84f724a646da

  • memory/220-138-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1064-110-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1232-144-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/2280-151-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/2348-125-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4532-0-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4532-152-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4868-130-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4964-117-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB