Analysis

  • max time kernel
    91s
  • max time network
    18s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    06/09/2024, 05:08

General

  • Target

    0521acbe48a22af059350b683172a720N.exe

  • Size

    91KB

  • MD5

    0521acbe48a22af059350b683172a720

  • SHA1

    e3d62fc16f5080b612657d9615238f3cdf4a3095

  • SHA256

    0caad946864f1085ab706b4d2c75d6dbcfa16def8238195ad2f6424b3db84135

  • SHA512

    236e4238d491f8ad4318b9a3d14cde09b755a2293bac86ed7adf9999b2440936d82fa3bed07f2e25d129483e89693a49e851e003be0584a3629e6b0c6c263b7f

  • SSDEEP

    1536:zAwEmBZ04faWmtN4nic+6GMAwEmBZ04faWmtN4nic+6GU:zGms4Eton0MGms4Eton0U

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
  • Loads dropped DLL 12 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
  • Enumerates physical storage devices 1 TTPs

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

  • 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 1 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • System policy modification 1 TTPs 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0521acbe48a22af059350b683172a720N.exe
    "C:\Users\Admin\AppData\Local\Temp\0521acbe48a22af059350b683172a720N.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
    • Loads dropped DLL
    • 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:2636
    • C:\Windows\xk.exe
      C:\Windows\xk.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:1164
    • 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:2348
    • 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:2208
    • 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:476
    • 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:2568
    • 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:1884
    • 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:644

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    91KB

    MD5

    0521acbe48a22af059350b683172a720

    SHA1

    e3d62fc16f5080b612657d9615238f3cdf4a3095

    SHA256

    0caad946864f1085ab706b4d2c75d6dbcfa16def8238195ad2f6424b3db84135

    SHA512

    236e4238d491f8ad4318b9a3d14cde09b755a2293bac86ed7adf9999b2440936d82fa3bed07f2e25d129483e89693a49e851e003be0584a3629e6b0c6c263b7f

  • C:\Windows\xk.exe

    Filesize

    91KB

    MD5

    1fd1f6d77074f738eb784dc22ec9ef94

    SHA1

    7568c1146af5cbc073b793ada93c3e4fdfc11019

    SHA256

    165e1299e0a1cb6cf6dc4f5e5dc34fe2bc63af5cf54aeadb06414afb999af4f2

    SHA512

    1b7e0f0d7f940d10401b6d8501d0ce7ee9a556fbfb54a10871e30c31ef789484f44f003215fcae8354ba422403d9e6a013a9569e844cba30f82c5f2b0d33b725

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

    Filesize

    91KB

    MD5

    396c322e654877b36c599342d3b2241a

    SHA1

    61d1aac98fb6e63692055931d9bf4f77bd452e0d

    SHA256

    fc779aae4ff4f7b8ef6d5819f14458794bd04c6a26df511b6d95afbd0f63b626

    SHA512

    8113a2af2810046dd13de7b421b87a4d94c1244d45ef947bee6539d0adb82a927cadb431c4e7b2c40689e7477069a912c2da3862a0aeb6f478fcb3d00de76382

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

    Filesize

    91KB

    MD5

    92bbb3ce677c52572094d8a6f69c3e47

    SHA1

    133c444179a28b9142a34216b76f7a8ccc41be4b

    SHA256

    6a2b9f843cd50018478b4005813d0d13d475565c051fdf9912318300ca4c68d2

    SHA512

    0126ad50a422051fcaef3b198895e742f15cc18acc1d36ec933d408281183f3741e700ad17d7e0ffe4e64fe7b3e046117c0a3c328e93a83b2a91b990ee1982ae

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

    Filesize

    91KB

    MD5

    8c59681b60a6d96cf32e9cb303262999

    SHA1

    0109e7019e27d925194b575d243b33a374a59174

    SHA256

    788ca916aeab56c024cc4d9b5c3dae3cbe2b84afc700c66482c779307e1d9c4d

    SHA512

    0670b68a4ce5cc86097c23e5fb51db0eab098aa062396dddd1770619050dfe8bce3eee7e22065caacbf44616d86080312f153b88a301592bf3460c1cfc370d30

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

    Filesize

    91KB

    MD5

    2ae7983de4fca48af06b56090d53ed83

    SHA1

    a394d16e1beabafc852427aad8153ad0eae4219b

    SHA256

    d3ac34a8b7ef5fa6c9287f8c5ad3c611231b5154afe9b389d5ad4fe6ddee5e9f

    SHA512

    5b5d7d82403d793f431fe504a9605dce08b9e71bb62280dc55c0a839dbf47141e29c834ba4eb7785d5666ed9ebe7593fd4afd2ee8d2e35376325a6ad16170264

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

    Filesize

    91KB

    MD5

    af8e158ca8415a4fdd3a134b2218e60d

    SHA1

    dcec1d1fb61e79a67285d26c5a5e298756817857

    SHA256

    9ff29e156b5f087e45bd2acd2653789157ac17f5d248fdd51bd96048fe73acf7

    SHA512

    f0396f24fa70498253c260b2ab6ecb1924a13b4c440e0c2a4ef87c43e5d22ccea775d138e674a2e07cad46892350c1740e68fd7b1fd94dd3982b1b712bc86a85

  • \Windows\SysWOW64\IExplorer.exe

    Filesize

    91KB

    MD5

    4373a02af9554a09659ab6fd9695aa5c

    SHA1

    ee89cb36cd32a8fdf94aa58f231fc495019b3b6e

    SHA256

    86d6afaaed916e1d64ac1e795eb1edf99c04a42f80ae76e228507c7de4751b63

    SHA512

    4018d71d91ca425627008b1e746bc46afdb2e6b520811233adfba95d54e192116ebd3f8e5fdac85d270c8f89286753653600ba0ed8ca0dd4087f43c7b12375f0

  • memory/476-148-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/644-183-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1164-114-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1884-173-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1884-169-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/2208-134-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/2208-137-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/2348-126-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/2568-159-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/2636-155-0x0000000003090000-0x00000000030BE000-memory.dmp

    Filesize

    184KB

  • memory/2636-110-0x0000000003090000-0x00000000030BE000-memory.dmp

    Filesize

    184KB

  • memory/2636-117-0x0000000003090000-0x00000000030BE000-memory.dmp

    Filesize

    184KB

  • memory/2636-167-0x0000000003090000-0x00000000030BE000-memory.dmp

    Filesize

    184KB

  • memory/2636-166-0x0000000003090000-0x00000000030BE000-memory.dmp

    Filesize

    184KB

  • memory/2636-145-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/2636-109-0x0000000003090000-0x00000000030BE000-memory.dmp

    Filesize

    184KB

  • memory/2636-0-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/2636-185-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB