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Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/11/2024, 01:33

General

  • Target

    1895ea7718500dfd7ddf4ccbf5057816fc06f849e72e644ba72c57f6241ca860.exe

  • Size

    3.0MB

  • MD5

    5061282fe58821440585f7bbb1708423

  • SHA1

    f64e5554bd39d34f872f9e74bef2b6bdcdb5541d

  • SHA256

    1895ea7718500dfd7ddf4ccbf5057816fc06f849e72e644ba72c57f6241ca860

  • SHA512

    3ad7f99cba8fded3c1be9c3ee3611308915eedaea18ec9c02b7ef245d2cd4bb7caab8cb15f50db00f64eb4c6c2ac180feeb7fc5d4f91caab0943c2e1fbb3d61d

  • SSDEEP

    49152:Y02N8QFUwqYZeM9/ZzzBjMkPUayX82+YXAypQxb9ndo9JnCmFWncFf0I74gu3tM:Yd0wGGzBjryX82uypSb9ndo9JCm

Malware Config

Extracted

Family

orcus

C2

192.168.50.155:10134

Mutex

5c4ed961518e4098bff05128f1a5b804

Attributes
  • autostart_method

    Registry

  • enable_keylogger

    true

  • install_path

    %programfiles%\sistem\sistem.exe

  • reconnect_delay

    10000

  • registry_keyname

    sistem

  • taskscheduler_taskname

    Orcus

  • watchdog_path

    AppData\OrcusWatchdog.exe

Signatures

  • Orcus

    Orcus is a Remote Access Trojan that is being sold on underground forums.

  • Orcus family
  • Orcurs Rat Executable 2 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
  • Drops file in System32 directory 3 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1895ea7718500dfd7ddf4ccbf5057816fc06f849e72e644ba72c57f6241ca860.exe
    "C:\Users\Admin\AppData\Local\Temp\1895ea7718500dfd7ddf4ccbf5057816fc06f849e72e644ba72c57f6241ca860.exe"
    1⤵
    • Checks computer location settings
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:840
    • C:\Windows\SysWOW64\WindowsInput.exe
      "C:\Windows\SysWOW64\WindowsInput.exe" --install
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:1416
    • C:\Program Files\sistem\sistem.exe
      "C:\Program Files\sistem\sistem.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:3112
  • C:\Windows\SysWOW64\WindowsInput.exe
    "C:\Windows\SysWOW64\WindowsInput.exe"
    1⤵
    • Executes dropped EXE
    PID:5112

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files\sistem\sistem.exe

    Filesize

    3.0MB

    MD5

    5061282fe58821440585f7bbb1708423

    SHA1

    f64e5554bd39d34f872f9e74bef2b6bdcdb5541d

    SHA256

    1895ea7718500dfd7ddf4ccbf5057816fc06f849e72e644ba72c57f6241ca860

    SHA512

    3ad7f99cba8fded3c1be9c3ee3611308915eedaea18ec9c02b7ef245d2cd4bb7caab8cb15f50db00f64eb4c6c2ac180feeb7fc5d4f91caab0943c2e1fbb3d61d

  • C:\Windows\SysWOW64\WindowsInput.exe

    Filesize

    21KB

    MD5

    a80be96476032d2eaa901d180fe9fb73

    SHA1

    f378d0bc5fefb9ea0b5006f020091ffcbcd7acec

    SHA256

    d6075c1ed6f285f5de01ce0cc6a817b59054da8b19f20bc7081cfe7fb2b1af42

    SHA512

    210c0c4c845b416a601015fba5ccd2a3e8a4b81d3b4c5e0491b07bd0dcad938d9b118728bb1abc21eb73c5f9263a3c08e1822ece91002a2d1f0983857f0192ea

  • C:\Windows\SysWOW64\WindowsInput.exe.config

    Filesize

    357B

    MD5

    a2b76cea3a59fa9af5ea21ff68139c98

    SHA1

    35d76475e6a54c168f536e30206578babff58274

    SHA256

    f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

    SHA512

    b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

  • memory/840-5-0x00000217585A0000-0x00000217585B2000-memory.dmp

    Filesize

    72KB

  • memory/840-1-0x000002173DE50000-0x000002173E14A000-memory.dmp

    Filesize

    3.0MB

  • memory/840-0-0x00007FFB0A403000-0x00007FFB0A405000-memory.dmp

    Filesize

    8KB

  • memory/840-3-0x000002173E4F0000-0x000002173E4FE000-memory.dmp

    Filesize

    56KB

  • memory/840-2-0x0000021758520000-0x000002175857C000-memory.dmp

    Filesize

    368KB

  • memory/840-4-0x00007FFB0A400000-0x00007FFB0AEC1000-memory.dmp

    Filesize

    10.8MB

  • memory/840-47-0x00007FFB0A400000-0x00007FFB0AEC1000-memory.dmp

    Filesize

    10.8MB

  • memory/1416-21-0x000002861DD50000-0x000002861DD5C000-memory.dmp

    Filesize

    48KB

  • memory/1416-24-0x000002861FAF0000-0x000002861FB02000-memory.dmp

    Filesize

    72KB

  • memory/1416-25-0x000002861FB70000-0x000002861FBAC000-memory.dmp

    Filesize

    240KB

  • memory/1416-29-0x00007FFB0A400000-0x00007FFB0AEC1000-memory.dmp

    Filesize

    10.8MB

  • memory/1416-23-0x00007FFB0A400000-0x00007FFB0AEC1000-memory.dmp

    Filesize

    10.8MB

  • memory/1416-22-0x00007FFB0A400000-0x00007FFB0AEC1000-memory.dmp

    Filesize

    10.8MB

  • memory/3112-48-0x0000021CB59B0000-0x0000021CB5A08000-memory.dmp

    Filesize

    352KB

  • memory/3112-49-0x0000021CB5810000-0x0000021CB5828000-memory.dmp

    Filesize

    96KB

  • memory/3112-51-0x0000021CCE1F0000-0x0000021CCE200000-memory.dmp

    Filesize

    64KB

  • memory/3112-50-0x0000021CCE6A0000-0x0000021CCE862000-memory.dmp

    Filesize

    1.8MB

  • memory/5112-31-0x0000021AE9D20000-0x0000021AE9E2A000-memory.dmp

    Filesize

    1.0MB