Analysis

  • max time kernel
    62s
  • max time network
    63s
  • 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, 02:56

Errors

Reason
Machine shutdown

General

  • Target

    94ca78853c2b4a62bdf3127c0671e785.exe

  • Size

    3.8MB

  • MD5

    94ca78853c2b4a62bdf3127c0671e785

  • SHA1

    14047148ddc9823bf23706470334a34b6d87db51

  • SHA256

    9a2bebd5496cc0040f2377110ad4ca3c74427790d937dbc34a671a19d6293ba0

  • SHA512

    1d489b7fd7eaa130c11e5aa1b03610151cafad7d820a2a16b2c682c99645b23c970a37aa0eb41126a8cd5b925a441a16635afed6a9791d2b4da3885465e8bd95

  • SSDEEP

    98304:8b2NpH9N+V+tmCy2Tfffpeot2xMTRKN9TJv0024Lh/:8oA+YRwv8q2SoN95zVh/

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Event Triggered Execution: Image File Execution Options Injection 1 TTPs 10 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 5 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Modifies WinLogon 2 TTPs 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

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

  • Kills process with taskkill 2 IoCs
  • Modifies registry class 3 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\94ca78853c2b4a62bdf3127c0671e785.exe
    "C:\Users\Admin\AppData\Local\Temp\94ca78853c2b4a62bdf3127c0671e785.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2700
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Tropinks.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Tropinks.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • Modifies WinLogon
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1752
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\system2.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\system2.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Writes to the Master Boot Record (MBR)
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3476
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Create /TN "Windows Update" /ru SYSTEM /SC ONSTART /TR "C:\Users\Admin\AppData\Local\Temp\RarSFX0\system2.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3284
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\system2.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\system2.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Writes to the Master Boot Record (MBR)
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1412
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Create /TN "Windows Update" /ru SYSTEM /SC ONSTART /TR "C:\Users\Admin\AppData\Local\Temp\RarSFX0\system2.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:5076
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\HOOK.vbs"
        3⤵
        • Checks computer location settings
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3364
        • C:\Windows\SysWOW64\wscript.exe
          "C:\Windows\System32\wscript.exe" "C:\HOOK.vbs" /elevated
          4⤵
          • Disables RegEdit via registry modification
          • Event Triggered Execution: Image File Execution Options Injection
          • System Location Discovery: System Language Discovery
          PID:1740
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c "TASKKILL /F /IM cssrs.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2896
        • C:\Windows\SysWOW64\taskkill.exe
          TASKKILL /F /IM cssrs.exe
          4⤵
          • System Location Discovery: System Language Discovery
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:3136
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c "TASKKILL /F /IM svchost.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1800
        • C:\Windows\SysWOW64\taskkill.exe
          TASKKILL /F /IM svchost.exe
          4⤵
          • System Location Discovery: System Language Discovery
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:4296
  • C:\Windows\explorer.exe
    explorer.exe
    1⤵
    • Boot or Logon Autostart Execution: Active Setup
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1584

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\HOOK.vbs

    Filesize

    1KB

    MD5

    38cff57dd8ec9e274f253791ce84a176

    SHA1

    20d800c79ef03dbd2afddb63727c16a82386fe05

    SHA256

    c8cd30241004443adc2e06e04372a14690cea3a247bb6ae4b17c8fe73379856b

    SHA512

    72f53f59746e3e9e9df2195ce59a515791fa359165ec479a192a9afc4c4a409686df9a1a14800a6d73a1c5c62420f406b353135c04d72f230ee20b908e56189b

  • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Tropinks.exe

    Filesize

    7.7MB

    MD5

    efe22bad38d34ad934400d2d7c109d4f

    SHA1

    7d39e88170bea0a1a642b582b400dae762125cbf

    SHA256

    19ad984a348d6db749fbcc1cee14811c5651e4906130981599c19f715a892944

    SHA512

    b8f93efa1aa746f3faa077275dd80d6e7820f6b5c85a304b2c388e8bb0d4cfc0aa33c90888e4b1123d860d0bf25fc51bcf0e0b854e57811be5cbe91ebd9bd6e6

  • C:\Users\Admin\AppData\Local\Temp\RarSFX0\system2.exe

    Filesize

    101KB

    MD5

    1600016f7c212be825ea6cad4bc442d5

    SHA1

    bf042c75cf82a145eb0039111b5f2d47bb310c7a

    SHA256

    5791e000c06c8d95d403a143c6a54087cfc1ef51380814a5f5d936a54234c2ee

    SHA512

    b52ccc6e6d1f8c08bf51b924f8b2f4451ffea7a8066b28acc871d762843674e8652023e5a9e0763833efbe64e23033278ea8db7d470a0e0c565b3db2cc257371

  • C:\Users\Admin\AppData\Local\Temp\evbD85F.tmp

    Filesize

    1KB

    MD5

    214961be07c8ac2e75b06bbdf8d58f35

    SHA1

    d83e491069122026e76995dd8e7246756ee054d6

    SHA256

    3738a17c1e396e1da288ebb3994d5c79884d946a3f07af67073b309ada2045f7

    SHA512

    59d5e78190dd2e4ad9318003028d4f5214cbfd52825a83af2e7f412a81dd9ba68c15325b31b65e325f46482252cde0f19043ec685a3f6843899df43fffeb5caf

  • memory/1412-33-0x0000000000400000-0x0000000000423000-memory.dmp

    Filesize

    140KB

  • memory/1752-17-0x0000000002E00000-0x0000000002E01000-memory.dmp

    Filesize

    4KB

  • memory/1752-22-0x0000000010000000-0x00000000106A5000-memory.dmp

    Filesize

    6.6MB

  • memory/1752-27-0x0000000010000000-0x00000000106A5000-memory.dmp

    Filesize

    6.6MB

  • memory/1752-14-0x0000000000400000-0x0000000000697000-memory.dmp

    Filesize

    2.6MB

  • memory/1752-15-0x0000000077882000-0x0000000077883000-memory.dmp

    Filesize

    4KB

  • memory/1752-16-0x0000000077883000-0x0000000077884000-memory.dmp

    Filesize

    4KB

  • memory/1752-37-0x0000000000400000-0x0000000000697000-memory.dmp

    Filesize

    2.6MB

  • memory/1752-38-0x0000000002E00000-0x0000000002E01000-memory.dmp

    Filesize

    4KB

  • memory/1752-39-0x0000000000400000-0x0000000000697000-memory.dmp

    Filesize

    2.6MB

  • memory/1752-41-0x0000000010000000-0x00000000106A5000-memory.dmp

    Filesize

    6.6MB

  • memory/1752-46-0x0000000000400000-0x0000000000697000-memory.dmp

    Filesize

    2.6MB

  • memory/3476-32-0x0000000000400000-0x0000000000423000-memory.dmp

    Filesize

    140KB