Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    14-01-2024 06:29

General

  • Target

    5a864c3c4a5c37d822447f6fa76024a5.exe

  • Size

    408KB

  • MD5

    5a864c3c4a5c37d822447f6fa76024a5

  • SHA1

    c58bd04b675fe46de542d8864fb217e0d07cacce

  • SHA256

    77dcfe4f6402827ed7b3bee0636530a111a73e54964647c0977192731d84c56c

  • SHA512

    d3cd3e276b58842aa6824e076f65e1005742d6c9935fb953b4ae5d63b5ff3c6bf62351e75f858370c94071985965d22480e71c82e82faab5c08cdbcfdaf9848e

  • SSDEEP

    12288:OFAypKUXaBOzJdqxXNfRQ6kTNmTORtVFw0UoZA:OW2vd4NfRQpTsu53ZA

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Modifies Installed Components in the registry 2 TTPs 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 6 IoCs
  • UPX packed file 20 IoCs

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

  • Adds Run key to start application 2 TTPs 3 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Modifies WinLogon 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 10 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5a864c3c4a5c37d822447f6fa76024a5.exe
    "C:\Users\Admin\AppData\Local\Temp\5a864c3c4a5c37d822447f6fa76024a5.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2832
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\259423609.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2780
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "sr5tuhsrt6xhjudry6" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\hsr5uyhrxt\serhur45hu.exe" /f
        3⤵
        • Adds Run key to start application
        PID:2540
    • C:\Users\Admin\AppData\Roaming\hsr5uyhrxt\serhur45hu.exe
      "C:\Users\Admin\AppData\Roaming\hsr5uyhrxt\serhur45hu.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2800
      • C:\Users\Admin\AppData\Roaming\hsr5uyhrxt\serhur45hu.exe
        "C:\Users\Admin\AppData\Roaming\hsr5uyhrxt\serhur45hu.exe"
        3⤵
        • Modifies WinLogon for persistence
        • Disables RegEdit via registry modification
        • Modifies Installed Components in the registry
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Modifies WinLogon
        • Modifies Internet Explorer settings
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        PID:2648

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

4
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

2
T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

4
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

2
T1547.004

Defense Evasion

Modify Registry

5
T1112

Discovery

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\53STNJLW\errorPageStrings[2]
    Filesize

    2KB

    MD5

    e3e4a98353f119b80b323302f26b78fa

    SHA1

    20ee35a370cdd3a8a7d04b506410300fd0a6a864

    SHA256

    9466d620dc57835a2475f8f71e304f54aee7160e134ba160baae0f19e5e71e66

    SHA512

    d8e4d73c76804a5abebd5dbc3a86dcdb6e73107b873175a8de67332c113fb7c4899890bf7972e467866fa4cd100a7e2a10a770e5a9c41cbf23b54351b771dcee

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\53STNJLW\httpErrorPagesScripts[1]
    Filesize

    8KB

    MD5

    3f57b781cb3ef114dd0b665151571b7b

    SHA1

    ce6a63f996df3a1cccb81720e21204b825e0238c

    SHA256

    46e019fa34465f4ed096a9665d1827b54553931ad82e98be01edb1ddbc94d3ad

    SHA512

    8cbf4ef582332ae7ea605f910ad6f8a4bc28513482409fa84f08943a72cac2cf0fa32b6af4c20c697e1fac2c5ba16b5a64a23af0c11eefbf69625b8f9f90c8fa

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\HJ0GGVIM\dnserrordiagoff[1]
    Filesize

    1KB

    MD5

    47f581b112d58eda23ea8b2e08cf0ff0

    SHA1

    6ec1df5eaec1439573aef0fb96dabfc953305e5b

    SHA256

    b1c947d00db5fce43314c56c663dbeae0ffa13407c9c16225c17ccefc3afa928

    SHA512

    187383eef3d646091e9f68eff680a11c7947b3d9b54a78cc6de4a04629d7037e9c97673ac054a6f1cf591235c110ca181a6b69ecba0e5032168f56f4486fff92

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\M2VO416U\NewErrorPageTemplate[1]
    Filesize

    1KB

    MD5

    cdf81e591d9cbfb47a7f97a2bcdb70b9

    SHA1

    8f12010dfaacdecad77b70a3e781c707cf328496

    SHA256

    204d95c6fb161368c795bb63e538fe0b11f9e406494bb5758b3b0d60c5f651bd

    SHA512

    977dcc2c6488acaf0e5970cef1a7a72c9f9dc6bb82da54f057e0853c8e939e4ab01b163eb7a5058e093a8bc44ecad9d06880fdc883e67e28ac67fee4d070a4cc

  • C:\Users\Admin\AppData\Local\Temp\259423609.bat
    Filesize

    159B

    MD5

    a80658d9ea7c0ddebccbe6de91b34b20

    SHA1

    0ee816fbd7dde9db479e9a22a70a1318a9f40e06

    SHA256

    a78032a0a6ba3f51f1c94a9527247c4b69af3d42922095968fbcb81ab23147f6

    SHA512

    f861719d968e2926702d4b45e436c89afee97f07eabf8355f4fa21a85411908e8a5a664f7b47fc1deaccbfe2de293d19b4d86499d982c6045cd9faee22ba3a19

  • \Users\Admin\AppData\Roaming\hsr5uyhrxt\dwlGina3.dll
    Filesize

    93KB

    MD5

    1173123287198dce1eb831f04e28352c

    SHA1

    39d650f4297c990a7ffaa7dc3b6d0ef903c9bd14

    SHA256

    65d4582e135c774d9c827ae08de8b77f199ee934f13d1a0537df4f5d18f590ba

    SHA512

    e9fdb6e808b0f3ed850fb364d48609a9726fd41ad138594fc04f8d48d5672aec3aaa76af236f07c4263c053dc539f99009e74491adb03c885190dcce78f0cede

  • \Users\Admin\AppData\Roaming\hsr5uyhrxt\serhur45hu.exe
    Filesize

    408KB

    MD5

    d64b3a3f412975f82af55bc01b1e005f

    SHA1

    033ebc32d070dc97caf13d8344c17012d845e5d0

    SHA256

    0aa8474ae9862d53ee4cac56101b4654affded1d706295e2e0d32523552cea48

    SHA512

    32518ee8325cfba58ca8e3e4306c9671ccca1a52372621b3a51bf3bc38e28ffb155d9fbf96d5099885197d2f0a01304662e3bc0b807828a75b7a039efa2e5e1a

  • memory/2648-83-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-93-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-45-0x0000000000220000-0x0000000000221000-memory.dmp
    Filesize

    4KB

  • memory/2648-51-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-52-0x00000000002A0000-0x00000000002BC000-memory.dmp
    Filesize

    112KB

  • memory/2648-80-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-81-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-43-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-88-0x0000000000220000-0x0000000000221000-memory.dmp
    Filesize

    4KB

  • memory/2648-44-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-42-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-49-0x00000000002A0000-0x00000000002BC000-memory.dmp
    Filesize

    112KB

  • memory/2648-41-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-38-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-107-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-117-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-123-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-133-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-147-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-157-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-167-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-173-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-187-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB

  • memory/2648-197-0x0000000000400000-0x000000000049A000-memory.dmp
    Filesize

    616KB