Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-09-2024 01:27

General

  • Target

    a9aa350b786356d7d78279e338ccc590N.exe

  • Size

    7.6MB

  • MD5

    a9aa350b786356d7d78279e338ccc590

  • SHA1

    248541c0cac6a66ba81dd8573470a15fd6107ddd

  • SHA256

    1a740ea5fc256aeac6c2df54d489e502cd2b752c20c09495ff879705f4bf5a0c

  • SHA512

    c7c4f3412ec0e027f5230b9912a1c2885c075cfc3cd5836ee21be44a93bf81df9afad7dda12274a29e5607f50a1ddb3290462170098dd53b731a4582d8890ef1

  • SSDEEP

    196608:0N/rsm+cw4nWA4e9p9KGOXvFzYJncZfN/rsm+cw9nWA4e9p9KGOXvFzYJncZwh:0N/rsr4nC0PodYJncpN/rsr9nC0PodYt

Malware Config

Extracted

Family

orcus

C2

127.0.0.1:10134

Attributes
  • autostart_method

    Disable

  • enable_keylogger

    true

  • install_path

    %programfiles%\Orcus\Orcus.exe

  • reconnect_delay

    10000

  • registry_keyname

    Orcus

  • taskscheduler_taskname

    Orcus

  • watchdog_path

    AppData\OrcusWatchdog.exe

Signatures

  • Orcus

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

  • Orcus main payload 1 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
  • Orcurs Rat Executable 12 IoCs
  • Suspicious Office macro 4 IoCs

    Office document equipped with macros.

  • Checks BIOS information in registry 2 TTPs 4 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 6 IoCs
  • Themida packer 15 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 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 6 IoCs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a9aa350b786356d7d78279e338ccc590N.exe
    "C:\Users\Admin\AppData\Local\Temp\a9aa350b786356d7d78279e338ccc590N.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2648
    • C:\Users\Admin\AppData\Local\Temp\._cache_a9aa350b786356d7d78279e338ccc590N.exe
      "C:\Users\Admin\AppData\Local\Temp\._cache_a9aa350b786356d7d78279e338ccc590N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2752
    • C:\ProgramData\Synaptics\Synaptics.exe
      "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1056
      • C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
        "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:836
        • C:\Program Files (x86)\Orcus\Orcus.exe
          "C:\Program Files (x86)\Orcus\Orcus.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of SetWindowsHookEx
          PID:1260
  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /automation -Embedding
    1⤵
    • System Location Discovery: System Language Discovery
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:1456

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    357B

    MD5

    a2b76cea3a59fa9af5ea21ff68139c98

    SHA1

    35d76475e6a54c168f536e30206578babff58274

    SHA256

    f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

    SHA512

    b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

  • C:\ProgramData\Synaptics\Synaptics.exe

    Filesize

    7.6MB

    MD5

    a9aa350b786356d7d78279e338ccc590

    SHA1

    248541c0cac6a66ba81dd8573470a15fd6107ddd

    SHA256

    1a740ea5fc256aeac6c2df54d489e502cd2b752c20c09495ff879705f4bf5a0c

    SHA512

    c7c4f3412ec0e027f5230b9912a1c2885c075cfc3cd5836ee21be44a93bf81df9afad7dda12274a29e5607f50a1ddb3290462170098dd53b731a4582d8890ef1

  • C:\Users\Admin\AppData\Local\Temp\._cache_a9aa350b786356d7d78279e338ccc590N.exe

    Filesize

    903KB

    MD5

    f25eb9be765070030a1f2e26deb22abe

    SHA1

    1cc47835cfe0472b285f891b2e66cc43a14a1ed1

    SHA256

    1e66f6824062400a6c9a8d7de09c7f3a1fa6b07273d8a97adf332b21b88905d7

    SHA512

    5e2229f652207812cc61cb4bd5f96fbee071424c5013dc66a70316cf6526460b927dd6595353b89ff5cf6f3653b996df99d11ae1bdebfc84bbe6755cedded6c1

  • C:\Users\Admin\AppData\Local\Temp\G5y8xZRa.xlsm

    Filesize

    22KB

    MD5

    750769e760c4598365adc494a19a73dc

    SHA1

    178d97636035229faa7bff2eb63a6b8e7110998a

    SHA256

    b8e69fd12715236f6e2616b027f3b74688cb10886268b874eaac9e4d4f4cf842

    SHA512

    7ce0d683e18af45f545d15e06357de7c8109059e64d4b0c6f9f53493af8ac7e25f34c5a983ac4fc0c487940e5745b39e2b291be73f37eb9948e1c08a511926ee

  • C:\Users\Admin\AppData\Local\Temp\G5y8xZRa.xlsm

    Filesize

    26KB

    MD5

    b043e7119c34a0c5c37e8d3ee8ab2ff3

    SHA1

    61093379d310b0fa28ba15c283d807ca762f0e4f

    SHA256

    6edacddcdc4d02a581fae6b4b125391fe26d21620af4f418464233d74727ea69

    SHA512

    e6ff93ed382c049857e306022875f5ecffa4868815879fe900114a9dfcd0429460a42701d056133152e0c62d1e43c015b71a05962a0580e678881444847aba12

  • C:\Users\Admin\AppData\Local\Temp\G5y8xZRa.xlsm

    Filesize

    28KB

    MD5

    f18075103fd67619d35300b0101f0a8e

    SHA1

    e3f587237ad070b8afceed7c14ac0fad4e628269

    SHA256

    2ca41bffdcdcecc6c6c999a1a884cf9d90a9176646cf9f18e9df7bac3d6b830e

    SHA512

    da0df564e2e59ad0c5a57273b2ba8c682a0e6f206997fde3e4a6b5ade33949846eb421027e847ba487af6c76e9abf28118cb36d69355629a3787f885af40d0bb

  • C:\Users\Admin\AppData\Local\Temp\G5y8xZRa.xlsm

    Filesize

    17KB

    MD5

    e566fc53051035e1e6fd0ed1823de0f9

    SHA1

    00bc96c48b98676ecd67e81a6f1d7754e4156044

    SHA256

    8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15

    SHA512

    a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04

  • C:\Users\Admin\AppData\Local\Temp\G5y8xZRa.xlsm

    Filesize

    25KB

    MD5

    9f97489f34ac0e9d61af598165f89798

    SHA1

    bf3c235ac1c368c06761ac9fdaacab2a6497913e

    SHA256

    ecdb4745f3b2783e0caf60a4f397b30a3aaa5cfc4107217c6d3939d8fc812f31

    SHA512

    07a339fd21fdef70de7400685692ac8846646b795ee1b56b48836bfead22c73df019c67f76a4fbf7bfd1f69a431e331325ace006344d3fe3752c51cbdf7469f1

  • C:\Users\Admin\AppData\Local\Temp\G5y8xZRa.xlsm

    Filesize

    25KB

    MD5

    e6152fbcc7b25cd0dec5258d31f77a3b

    SHA1

    1407015a491cafb6acdfb68587cc97606acd8c3f

    SHA256

    32cd331b85c617be7e0661c1d3e68219b9f54d867a62eeb0c66de382003d1bbc

    SHA512

    7f08ab25f6d262f0769d1cdcbd4f4e577a1716ed455c29788dc861e632b2d6c07107d05999338388d8bbd936d232dc50a7954667bf20025fb5a6d2edb22feb26

  • C:\Users\Admin\Desktop\~$OpenOut.xlsx

    Filesize

    165B

    MD5

    ff09371174f7c701e75f357a187c06e8

    SHA1

    57f9a638fd652922d7eb23236c80055a91724503

    SHA256

    e4ba04959837c27019a2349015543802439e152ddc4baf4e8c7b9d2b483362a8

    SHA512

    e4d01e5908e9f80b7732473ec6807bb7faa5425e3154d5642350f44d7220af3cffd277e0b67bcf03f1433ac26a26edb3ddd3707715b61d054b979fbb4b453882

  • memory/836-56-0x00000000011F0000-0x00000000012D8000-memory.dmp

    Filesize

    928KB

  • memory/836-59-0x0000000000640000-0x0000000000652000-memory.dmp

    Filesize

    72KB

  • memory/1056-40-0x0000000000FC0000-0x0000000001C51000-memory.dmp

    Filesize

    12.6MB

  • memory/1056-162-0x0000000003080000-0x0000000003090000-memory.dmp

    Filesize

    64KB

  • memory/1056-161-0x0000000000FC0000-0x0000000001C51000-memory.dmp

    Filesize

    12.6MB

  • memory/1056-160-0x0000000000FC0000-0x0000000001C51000-memory.dmp

    Filesize

    12.6MB

  • memory/1056-197-0x0000000000FC0000-0x0000000001C51000-memory.dmp

    Filesize

    12.6MB

  • memory/1056-38-0x0000000000FC0000-0x0000000001C51000-memory.dmp

    Filesize

    12.6MB

  • memory/1056-39-0x0000000000FC0000-0x0000000001C51000-memory.dmp

    Filesize

    12.6MB

  • memory/1056-44-0x0000000000FC0000-0x0000000001C51000-memory.dmp

    Filesize

    12.6MB

  • memory/1056-42-0x0000000000FC0000-0x0000000001C51000-memory.dmp

    Filesize

    12.6MB

  • memory/1056-50-0x0000000003080000-0x0000000003090000-memory.dmp

    Filesize

    64KB

  • memory/1260-120-0x0000000000550000-0x0000000000562000-memory.dmp

    Filesize

    72KB

  • memory/1260-121-0x0000000000AF0000-0x0000000000B08000-memory.dmp

    Filesize

    96KB

  • memory/1260-123-0x0000000000B50000-0x0000000000B60000-memory.dmp

    Filesize

    64KB

  • memory/1260-71-0x00000000011C0000-0x00000000012A8000-memory.dmp

    Filesize

    928KB

  • memory/1456-159-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1456-57-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2648-34-0x0000000004150000-0x0000000004160000-memory.dmp

    Filesize

    64KB

  • memory/2648-4-0x0000000000940000-0x00000000015D1000-memory.dmp

    Filesize

    12.6MB

  • memory/2648-0-0x0000000000940000-0x00000000015D1000-memory.dmp

    Filesize

    12.6MB

  • memory/2648-35-0x0000000006A70000-0x0000000007701000-memory.dmp

    Filesize

    12.6MB

  • memory/2648-1-0x0000000077400000-0x0000000077402000-memory.dmp

    Filesize

    8KB

  • memory/2648-2-0x0000000000940000-0x00000000015D1000-memory.dmp

    Filesize

    12.6MB

  • memory/2648-12-0x0000000004150000-0x0000000004160000-memory.dmp

    Filesize

    64KB

  • memory/2648-6-0x00000000001F0000-0x00000000001F1000-memory.dmp

    Filesize

    4KB

  • memory/2648-5-0x0000000000940000-0x00000000015D1000-memory.dmp

    Filesize

    12.6MB

  • memory/2648-3-0x0000000000940000-0x00000000015D1000-memory.dmp

    Filesize

    12.6MB

  • memory/2648-36-0x0000000000940000-0x00000000015D1000-memory.dmp

    Filesize

    12.6MB

  • memory/2752-43-0x0000000000580000-0x00000000005DC000-memory.dmp

    Filesize

    368KB

  • memory/2752-25-0x0000000001120000-0x0000000001208000-memory.dmp

    Filesize

    928KB

  • memory/2752-41-0x0000000000230000-0x000000000023E000-memory.dmp

    Filesize

    56KB