Analysis

  • max time kernel
    118s
  • max time network
    109s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250129-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-02-2025 16:27

General

  • Target

    b5fea2850c6a5dc36de131172dc00f0707bb14fc12dc367c4aca32886fec21d2N.exe

  • Size

    677KB

  • MD5

    7a0ba956819bd8e71027be37a7cef800

  • SHA1

    6c7e9b4471bc8a598fc56f22b58d15780b52280d

  • SHA256

    b5fea2850c6a5dc36de131172dc00f0707bb14fc12dc367c4aca32886fec21d2

  • SHA512

    619e199f86316b76d0672af1bd99f5c4f462364731e5581f2b8d1f91a0ed216f992118899d2694c0e2dab5855ebb9e89591334bff5836db60cc53d632b6aa6e0

  • SSDEEP

    12288:9kiL11aPKT1F5Vs+TVonB7krqRTUWfIVzJVUYMiGx/OHWtWOaZ:9ki+PKT1F5S7BgORTWJOXBSZ

Malware Config

Signatures

  • Blackshades

    Blackshades is a remote access trojan with various capabilities.

  • Blackshades family
  • Blackshades payload 10 IoCs
  • Modifies firewall policy service 3 TTPs 10 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • UPX packed file 19 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

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

  • Modifies registry key 1 TTPs 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b5fea2850c6a5dc36de131172dc00f0707bb14fc12dc367c4aca32886fec21d2N.exe
    "C:\Users\Admin\AppData\Local\Temp\b5fea2850c6a5dc36de131172dc00f0707bb14fc12dc367c4aca32886fec21d2N.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1736
    • C:\Users\Admin\AppData\Local\Temp\eHdsu.exe
      "C:\Users\Admin\AppData\Local\Temp\eHdsu.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4352
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\uPxhZ.bat" "
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3272
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "csrs" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\csrs.exe" /f
        3⤵
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        PID:2848
    • C:\Users\Admin\AppData\Roaming\csrs.exe
      "C:\Users\Admin\AppData\Roaming\csrs.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1348
      • C:\Users\Admin\AppData\Roaming\csrs.exe
        C:\Users\Admin\AppData\Roaming\csrs.exe
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2740
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2116
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:4628
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\csrs.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\csrs.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2392
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\csrs.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\csrs.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:3580
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2888
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:3852
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\svhost32.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\svhost32.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:3148
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\svhost32.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\svhost32.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:3436

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\eHdsu.exe

    Filesize

    12KB

    MD5

    466773bfcbd01059584cdae36e3c281c

    SHA1

    81e68615ef27cf363d6fe96582433c8a7ce8043b

    SHA256

    21f0910a1d71dfc63744474b2ba6b8248d893226576ea48791dc0cef7dd52105

    SHA512

    1088e7180a7d4ed717307c03884aebd945c5f78ffd6c4a4d7e84e504dc2da0434fe4173c63f1afd5a57e83e1783b3359ce123e85bb62699fb663bc9b1c02129f

  • C:\Users\Admin\AppData\Local\Temp\uPxhZ.txt

    Filesize

    130B

    MD5

    34a635bb69f9dc2d8e8ceba2f6b25308

    SHA1

    66bbd6b4eb975af0a799c6be7aaed6917f5df10c

    SHA256

    eb18b0e443ffb00db0eb4438c0d3ec49cf67c3b7cbc9da8e25c60298c970a59a

    SHA512

    ae355a265391afe02a37d82ffb0df6664788dc4aee975678aeb524ff47f889d1e5ecab42b073093d71494c9868276dc9794d4bebce4c967d866b189c136a9545

  • C:\Users\Admin\AppData\Roaming\csrs.txt

    Filesize

    677KB

    MD5

    39a2da4151c33706b05d16b3fb3cb5dd

    SHA1

    a668e6dc6c7d091dd867689bc18c89d457218582

    SHA256

    437c56ca585ee7227bb32f1547a52f75f5aff9ed5cb4c542e5e0be7a346fb134

    SHA512

    3f158cb5849da53eb1d66f514d61576f4f7ae7fae9e49ed6b7b31f0099cdbc9665d23a570bc48a1eb0f9e2738e9bae2a7a9d26b206a4398388ef1e01f4833f22

  • memory/1348-47-0x0000000000400000-0x00000000005DC000-memory.dmp

    Filesize

    1.9MB

  • memory/1736-0-0x0000000000400000-0x00000000005DC000-memory.dmp

    Filesize

    1.9MB

  • memory/1736-37-0x0000000000400000-0x00000000005DC000-memory.dmp

    Filesize

    1.9MB

  • memory/2740-65-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/2740-68-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/2740-45-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/2740-40-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/2740-75-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/2740-54-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/2740-58-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/2740-61-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/2740-63-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/2740-72-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/2740-43-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/2740-70-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/4352-10-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB

  • memory/4352-53-0x0000000000400000-0x0000000000417000-memory.dmp

    Filesize

    92KB