Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-12-2024 01:10

General

  • Target

    5f615729178ef0849f50aa12de0990cdcfd7e230b7f0f1fbf8fc8c697f66306f.exe

  • Size

    915KB

  • MD5

    ada039644e59df9cb31e9bb1051d57ec

  • SHA1

    921eaf597d36694b70ffd4dee6cb2c134e25e8c0

  • SHA256

    5f615729178ef0849f50aa12de0990cdcfd7e230b7f0f1fbf8fc8c697f66306f

  • SHA512

    2f946ea34c4569d5dfc9760426a4827e1ee47ce32a00896b0c1bea9e70d675c81246461aabe6b228cc619e63c59634182a253aa4893f71983b8df9ec3542a64e

  • SSDEEP

    24576:mmHR4MROxnFi3IsFrrcI0AilFEvxHPQook:JuMioNFrrcI0AilFEvxHP

Malware Config

Extracted

Family

orcus

C2

192.168.0.103:6969

Mutex

12557aa19bb544ccb6c16b1f84c08d29

Attributes
  • autostart_method

    Registry

  • enable_keylogger

    true

  • install_path

    %programfiles%\Orcus\Orcus.exe

  • reconnect_delay

    10000

  • registry_keyname

    System322

  • 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
  • Orcus main payload 1 IoCs
  • Orcurs Rat Executable 2 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5f615729178ef0849f50aa12de0990cdcfd7e230b7f0f1fbf8fc8c697f66306f.exe
    "C:\Users\Admin\AppData\Local\Temp\5f615729178ef0849f50aa12de0990cdcfd7e230b7f0f1fbf8fc8c697f66306f.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:316
    • C:\Program Files (x86)\Orcus\Orcus.exe
      "C:\Program Files (x86)\Orcus\Orcus.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4448
      • C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe
        "C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /launchSelfAndExit "C:\Program Files (x86)\Orcus\Orcus.exe" 4448 /protectFile
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3380
        • C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe
          "C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /watchProcess "C:\Program Files (x86)\Orcus\Orcus.exe" 4448 "/protectFile"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3264
  • C:\Program Files (x86)\Orcus\Orcus.exe
    "C:\Program Files (x86)\Orcus\Orcus.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3596

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Orcus\Orcus.exe

    Filesize

    915KB

    MD5

    ada039644e59df9cb31e9bb1051d57ec

    SHA1

    921eaf597d36694b70ffd4dee6cb2c134e25e8c0

    SHA256

    5f615729178ef0849f50aa12de0990cdcfd7e230b7f0f1fbf8fc8c697f66306f

    SHA512

    2f946ea34c4569d5dfc9760426a4827e1ee47ce32a00896b0c1bea9e70d675c81246461aabe6b228cc619e63c59634182a253aa4893f71983b8df9ec3542a64e

  • C:\Program Files (x86)\Orcus\Orcus.exe.config

    Filesize

    357B

    MD5

    a2b76cea3a59fa9af5ea21ff68139c98

    SHA1

    35d76475e6a54c168f536e30206578babff58274

    SHA256

    f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

    SHA512

    b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\OrcusWatchdog.exe.log

    Filesize

    425B

    MD5

    4eaca4566b22b01cd3bc115b9b0b2196

    SHA1

    e743e0792c19f71740416e7b3c061d9f1336bf94

    SHA256

    34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

    SHA512

    bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

  • C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe

    Filesize

    9KB

    MD5

    913967b216326e36a08010fb70f9dba3

    SHA1

    7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

    SHA256

    8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

    SHA512

    c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

  • C:\Users\Admin\AppData\Roaming\Orcus\err_12557aa19bb544ccb6c16b1f84c08d29.dat

    Filesize

    1KB

    MD5

    07097d3b37aab8d9dab8973a4afff3fb

    SHA1

    8c4bcf973d9bc0ace5ced4734d318a71b0c009e3

    SHA256

    b30433546c4a201bb1cc60c843c96d79d93700cb778de5736b40640f848e9049

    SHA512

    25f6dc874c8ea60f110a84451e5c08391a01ca1912041bf49b6509401d4527ccfa781ba253937bcb67a6a4010d8a58b1396172e851e3f162433f788ab6ac2d8a

  • memory/316-8-0x0000000005990000-0x0000000005998000-memory.dmp

    Filesize

    32KB

  • memory/316-14-0x0000000006150000-0x000000000619C000-memory.dmp

    Filesize

    304KB

  • memory/316-7-0x0000000005980000-0x0000000005992000-memory.dmp

    Filesize

    72KB

  • memory/316-0-0x00000000752DE000-0x00000000752DF000-memory.dmp

    Filesize

    4KB

  • memory/316-9-0x00000000059A0000-0x00000000059A8000-memory.dmp

    Filesize

    32KB

  • memory/316-10-0x0000000005FE0000-0x0000000006046000-memory.dmp

    Filesize

    408KB

  • memory/316-11-0x0000000006670000-0x0000000006C88000-memory.dmp

    Filesize

    6.1MB

  • memory/316-12-0x00000000060B0000-0x00000000060C2000-memory.dmp

    Filesize

    72KB

  • memory/316-13-0x0000000006110000-0x000000000614C000-memory.dmp

    Filesize

    240KB

  • memory/316-6-0x00000000054A0000-0x0000000005532000-memory.dmp

    Filesize

    584KB

  • memory/316-15-0x00000000062D0000-0x00000000063DA000-memory.dmp

    Filesize

    1.0MB

  • memory/316-5-0x00000000059B0000-0x0000000005F54000-memory.dmp

    Filesize

    5.6MB

  • memory/316-4-0x00000000052D0000-0x000000000532C000-memory.dmp

    Filesize

    368KB

  • memory/316-32-0x00000000752D0000-0x0000000075A80000-memory.dmp

    Filesize

    7.7MB

  • memory/316-1-0x0000000000880000-0x000000000096A000-memory.dmp

    Filesize

    936KB

  • memory/316-2-0x00000000052C0000-0x00000000052CE000-memory.dmp

    Filesize

    56KB

  • memory/316-3-0x00000000752D0000-0x0000000075A80000-memory.dmp

    Filesize

    7.7MB

  • memory/3380-58-0x0000000000810000-0x0000000000818000-memory.dmp

    Filesize

    32KB

  • memory/3596-43-0x00000000752D0000-0x0000000075A80000-memory.dmp

    Filesize

    7.7MB

  • memory/3596-40-0x00000000752D0000-0x0000000075A80000-memory.dmp

    Filesize

    7.7MB

  • memory/3596-63-0x00000000752D0000-0x0000000075A80000-memory.dmp

    Filesize

    7.7MB

  • memory/4448-42-0x0000000007180000-0x0000000007190000-memory.dmp

    Filesize

    64KB

  • memory/4448-41-0x0000000007350000-0x0000000007512000-memory.dmp

    Filesize

    1.8MB

  • memory/4448-38-0x0000000006FC0000-0x0000000006FD8000-memory.dmp

    Filesize

    96KB

  • memory/4448-44-0x0000000007680000-0x000000000768A000-memory.dmp

    Filesize

    40KB

  • memory/4448-37-0x00000000067C0000-0x000000000680E000-memory.dmp

    Filesize

    312KB

  • memory/4448-34-0x00000000752D0000-0x0000000075A80000-memory.dmp

    Filesize

    7.7MB

  • memory/4448-33-0x00000000752D0000-0x0000000075A80000-memory.dmp

    Filesize

    7.7MB

  • memory/4448-64-0x00000000752D0000-0x0000000075A80000-memory.dmp

    Filesize

    7.7MB

  • memory/4448-65-0x00000000752D0000-0x0000000075A80000-memory.dmp

    Filesize

    7.7MB