Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-02-2024 01:34

General

  • Target

    a29400e0ab5d6053fa0282250f76133714c09580e023a379728d37c6ba21317b.exe

  • Size

    22.9MB

  • MD5

    c3250c3541382fc0bd8f14229e5fc721

  • SHA1

    ca91e11b8ad65c492912de4401cbcbfecd45d02f

  • SHA256

    a29400e0ab5d6053fa0282250f76133714c09580e023a379728d37c6ba21317b

  • SHA512

    d341aa7aad0adc81b80b9b2b23066f3b78a91711fa434496378f3f615356f1a72603d1ba7313ef5700ac13a08b4552d84e168de61a64eaf7ee727a1fbd889fbe

  • SSDEEP

    24576:Fkk4MROxnFSx3sUzrrcI0AilFEvxHP+ooU:FmMiYJsUzrrcI0AilFEvxHP

Malware Config

Extracted

Family

orcus

C2

0.tcp.eu.ngrok.io:11649

Mutex

91ae58d9b49a47b0933d6314024a6ff7

Attributes
  • autostart_method

    Registry

  • enable_keylogger

    true

  • install_path

    %programfiles%\Chrome Update\Chrome Network.exe

  • reconnect_delay

    10000

  • registry_keyname

    Telegram Update

  • taskscheduler_taskname

    svhost

  • watchdog_path

    Temp\System Files.exe

Signatures

  • Contains code to disable Windows Defender 1 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 7 IoCs
  • Orcus

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

  • Orcus main payload 4 IoCs
  • UAC bypass 3 TTPs 6 IoCs
  • Orcurs Rat Executable 5 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 6 IoCs
  • Windows security modification 2 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 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 behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • System policy modification 1 TTPs 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a29400e0ab5d6053fa0282250f76133714c09580e023a379728d37c6ba21317b.exe
    "C:\Users\Admin\AppData\Local\Temp\a29400e0ab5d6053fa0282250f76133714c09580e023a379728d37c6ba21317b.exe"
    1⤵
    • Modifies Windows Defender Real-time Protection settings
    • UAC bypass
    • Checks computer location settings
    • Windows security modification
    • Checks whether UAC is enabled
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1716
    • C:\Windows\SysWOW64\WindowsInput.exe
      "C:\Windows\SysWOW64\WindowsInput.exe" --install
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:2944
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Get-MpPreference -verbose
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4716
    • C:\Program Files (x86)\Chrome Update\Chrome Network.exe
      "C:\Program Files (x86)\Chrome Update\Chrome Network.exe"
      2⤵
      • Modifies Windows Defender Real-time Protection settings
      • UAC bypass
      • Checks computer location settings
      • Executes dropped EXE
      • Windows security modification
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:4704
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Get-MpPreference -verbose
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4160
      • C:\Users\Admin\AppData\Local\Temp\System Files.exe
        "C:\Users\Admin\AppData\Local\Temp\System Files.exe" /launchSelfAndExit "C:\Program Files (x86)\Chrome Update\Chrome Network.exe" 4704 /protectFile
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4632
        • C:\Users\Admin\AppData\Local\Temp\System Files.exe
          "C:\Users\Admin\AppData\Local\Temp\System Files.exe" /watchProcess "C:\Program Files (x86)\Chrome Update\Chrome Network.exe" 4704 "/protectFile"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:984
  • C:\Windows\SysWOW64\WindowsInput.exe
    "C:\Windows\SysWOW64\WindowsInput.exe"
    1⤵
    • Executes dropped EXE
    PID:3404
  • C:\Program Files (x86)\Chrome Update\Chrome Network.exe
    "C:\Program Files (x86)\Chrome Update\Chrome Network.exe"
    1⤵
    • Executes dropped EXE
    PID:5012

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\Chrome Update\Chrome Network.exe

    Filesize

    545KB

    MD5

    f428ac3563771640ac06d98b8c4262b7

    SHA1

    934545b3db75988d318e331a73e33c3721400d17

    SHA256

    56304c18fa596a27a1bbf75ea2e99e7904bc225803a272f60e84923a999b8d75

    SHA512

    22e0b6082de2915de43d0688f35c5fbbfd875f094a2c7fea1a610e86bccbc8c3ed1935c1e94b1b0a4563ba60dd77200b3df53c12cd06e480ec59bdc2ef1c216d

  • C:\Program Files (x86)\Chrome Update\Chrome Network.exe

    Filesize

    1.7MB

    MD5

    0240cfb570918f76ec1c585f8adc6d1e

    SHA1

    b01cf277ec37236b40892fc874735e50462b773c

    SHA256

    1d5a801b7d86ac8bf44b3d4818237522e6e977b512eaef80cbefcfe650b4317a

    SHA512

    29e438009d0863672fe9edec454c2940013a63acd0140739ab3f4de8cc02bdd00be6e0005bacde7c6bc85cdec90aba340bcf9d2dca4586b52434754742ff2cc6

  • C:\Program Files (x86)\Chrome Update\Chrome Network.exe

    Filesize

    1.2MB

    MD5

    eb7b19818483009d795992fa2fde7f3b

    SHA1

    1950efa7f0cff161c2a96bcbee125235b2e72196

    SHA256

    220943b60b3ab09be0dd443cac0b2f4e88c57fe4f5d6cbacea1207c8fe87b2cc

    SHA512

    c7bd5f54e097ba031c2fd985e31bdc9088ebfafced73a1008288a045885fef969c4a0c3651c30bd266d12351d6dd1dedd230c2c7be073f62a66f75a85ceec104

  • C:\Program Files (x86)\Chrome Update\Chrome Network.exe

    Filesize

    613KB

    MD5

    8b598e079074ae69a94c6e58e1d50030

    SHA1

    8e6349943524b9b76196667b5218970eb173e080

    SHA256

    29dcfbb59252ada5d4365a4d2d3e98476e26e7407c4d975069ed3bdded8ff497

    SHA512

    e5583424126f16e2ede1173667631c1b19639eabd231b265fb6f6ccd7a8a5a8c4b74313a4cdf0c0dae584f7ef28fc633765b38f928b1a895aa859b31ae5b3d7a

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

    Filesize

    425B

    MD5

    4eaca4566b22b01cd3bc115b9b0b2196

    SHA1

    e743e0792c19f71740416e7b3c061d9f1336bf94

    SHA256

    34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

    SHA512

    bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

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

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    18KB

    MD5

    1ccd6b0b1f67900bbdfd2070b7c9221e

    SHA1

    ca348e9d44c233565043a327fd1b297366a50900

    SHA256

    11a50caa3c7b0d7acaab0156bc0396914852172617503268381ae5f4ac9c32f5

    SHA512

    5db257f6bdfa5315a162fea471fd171f997b4f8a336c70cbc5f2137ba7b5229f412630874ecf868d1e254047c750865e9ac7033e0fe67c9b7ecccbd3d75e5160

  • C:\Users\Admin\AppData\Local\Temp\System Files.exe

    Filesize

    9KB

    MD5

    913967b216326e36a08010fb70f9dba3

    SHA1

    7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

    SHA256

    8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

    SHA512

    c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hscljcl1.mdh.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Roaming\Orcus\err_91ae58d9b49a47b0933d6314024a6ff7.dat

    Filesize

    1KB

    MD5

    bcac4c57b271023c4d2c6b8dee8dc451

    SHA1

    7a1a46390b8c885cf38f456c2c6a9031f0051c92

    SHA256

    d1f40b4d7c60d1e04d28b090d81dd2a920b2993c7381b8cfac74f5ea8879e537

    SHA512

    246c9657ef61193a4c882d8df933c4aca1e867e415607db80cd47d120e496bc475ea82813d11663151ca01616666820de05a617aa69134ef7f72575ca06c846e

  • C:\Windows\SysWOW64\WindowsInput.exe

    Filesize

    21KB

    MD5

    e6fcf516d8ed8d0d4427f86e08d0d435

    SHA1

    c7691731583ab7890086635cb7f3e4c22ca5e409

    SHA256

    8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

    SHA512

    c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

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

    Filesize

    357B

    MD5

    a2b76cea3a59fa9af5ea21ff68139c98

    SHA1

    35d76475e6a54c168f536e30206578babff58274

    SHA256

    f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

    SHA512

    b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

  • memory/1716-10-0x0000000005300000-0x0000000005308000-memory.dmp

    Filesize

    32KB

  • memory/1716-3-0x0000000004BA0000-0x0000000004BAE000-memory.dmp

    Filesize

    56KB

  • memory/1716-14-0x0000000006000000-0x0000000006618000-memory.dmp

    Filesize

    6.1MB

  • memory/1716-15-0x0000000005A30000-0x0000000005A42000-memory.dmp

    Filesize

    72KB

  • memory/1716-16-0x0000000005A90000-0x0000000005ACC000-memory.dmp

    Filesize

    240KB

  • memory/1716-17-0x0000000005AD0000-0x0000000005B1C000-memory.dmp

    Filesize

    304KB

  • memory/1716-18-0x0000000005C50000-0x0000000005D5A000-memory.dmp

    Filesize

    1.0MB

  • memory/1716-20-0x0000000006750000-0x0000000006772000-memory.dmp

    Filesize

    136KB

  • memory/1716-106-0x0000000007720000-0x000000000776A000-memory.dmp

    Filesize

    296KB

  • memory/1716-13-0x0000000005970000-0x00000000059D6000-memory.dmp

    Filesize

    408KB

  • memory/1716-107-0x0000000008380000-0x00000000086D4000-memory.dmp

    Filesize

    3.3MB

  • memory/1716-108-0x000000007F400000-0x000000007F410000-memory.dmp

    Filesize

    64KB

  • memory/1716-118-0x0000000009C90000-0x0000000009D33000-memory.dmp

    Filesize

    652KB

  • memory/1716-71-0x0000000074EC0000-0x0000000075670000-memory.dmp

    Filesize

    7.7MB

  • memory/1716-119-0x000000000A060000-0x000000000A071000-memory.dmp

    Filesize

    68KB

  • memory/1716-120-0x000000000A0A0000-0x000000000A0B4000-memory.dmp

    Filesize

    80KB

  • memory/1716-1-0x00000000001D0000-0x00000000002C0000-memory.dmp

    Filesize

    960KB

  • memory/1716-133-0x0000000074EC0000-0x0000000075670000-memory.dmp

    Filesize

    7.7MB

  • memory/1716-2-0x0000000004D90000-0x0000000004DA0000-memory.dmp

    Filesize

    64KB

  • memory/1716-11-0x0000000005310000-0x0000000005318000-memory.dmp

    Filesize

    32KB

  • memory/1716-12-0x0000000005320000-0x0000000005328000-memory.dmp

    Filesize

    32KB

  • memory/1716-8-0x00000000052E0000-0x00000000052E8000-memory.dmp

    Filesize

    32KB

  • memory/1716-7-0x0000000004E30000-0x0000000004E42000-memory.dmp

    Filesize

    72KB

  • memory/1716-6-0x0000000004E40000-0x0000000004ED2000-memory.dmp

    Filesize

    584KB

  • memory/1716-5-0x0000000005350000-0x00000000058F4000-memory.dmp

    Filesize

    5.6MB

  • memory/1716-0-0x0000000074EC0000-0x0000000075670000-memory.dmp

    Filesize

    7.7MB

  • memory/1716-4-0x0000000004C50000-0x0000000004CAC000-memory.dmp

    Filesize

    368KB

  • memory/1716-9-0x00000000052F0000-0x00000000052FA000-memory.dmp

    Filesize

    40KB

  • memory/2944-42-0x00007FFC08EE0000-0x00007FFC099A1000-memory.dmp

    Filesize

    10.8MB

  • memory/2944-37-0x00000000026D0000-0x000000000270C000-memory.dmp

    Filesize

    240KB

  • memory/2944-36-0x0000000000DC0000-0x0000000000DD2000-memory.dmp

    Filesize

    72KB

  • memory/2944-38-0x000000001B3D0000-0x000000001B3E0000-memory.dmp

    Filesize

    64KB

  • memory/2944-35-0x00007FFC08EE0000-0x00007FFC099A1000-memory.dmp

    Filesize

    10.8MB

  • memory/2944-34-0x00000000005E0000-0x00000000005EC000-memory.dmp

    Filesize

    48KB

  • memory/3404-135-0x00007FFC08EE0000-0x00007FFC099A1000-memory.dmp

    Filesize

    10.8MB

  • memory/3404-46-0x000000001AC90000-0x000000001AD9A000-memory.dmp

    Filesize

    1.0MB

  • memory/3404-45-0x0000000001860000-0x0000000001870000-memory.dmp

    Filesize

    64KB

  • memory/3404-44-0x00007FFC08EE0000-0x00007FFC099A1000-memory.dmp

    Filesize

    10.8MB

  • memory/4704-134-0x0000000074EC0000-0x0000000075670000-memory.dmp

    Filesize

    7.7MB

  • memory/4716-57-0x0000000005480000-0x00000000054E6000-memory.dmp

    Filesize

    408KB

  • memory/4716-89-0x00000000076E0000-0x00000000076F1000-memory.dmp

    Filesize

    68KB

  • memory/4716-90-0x0000000007710000-0x000000000771E000-memory.dmp

    Filesize

    56KB

  • memory/4716-91-0x0000000007720000-0x0000000007734000-memory.dmp

    Filesize

    80KB

  • memory/4716-92-0x0000000007820000-0x000000000783A000-memory.dmp

    Filesize

    104KB

  • memory/4716-93-0x0000000007800000-0x0000000007808000-memory.dmp

    Filesize

    32KB

  • memory/4716-96-0x0000000074EC0000-0x0000000075670000-memory.dmp

    Filesize

    7.7MB

  • memory/4716-88-0x0000000007760000-0x00000000077F6000-memory.dmp

    Filesize

    600KB

  • memory/4716-87-0x0000000007550000-0x000000000755A000-memory.dmp

    Filesize

    40KB

  • memory/4716-85-0x0000000007B30000-0x00000000081AA000-memory.dmp

    Filesize

    6.5MB

  • memory/4716-86-0x00000000074E0000-0x00000000074FA000-memory.dmp

    Filesize

    104KB

  • memory/4716-82-0x000000007F150000-0x000000007F160000-memory.dmp

    Filesize

    64KB

  • memory/4716-84-0x00000000071C0000-0x0000000007263000-memory.dmp

    Filesize

    652KB

  • memory/4716-83-0x0000000006780000-0x000000000679E000-memory.dmp

    Filesize

    120KB

  • memory/4716-72-0x00000000712A0000-0x00000000712EC000-memory.dmp

    Filesize

    304KB

  • memory/4716-70-0x00000000067A0000-0x00000000067D2000-memory.dmp

    Filesize

    200KB

  • memory/4716-69-0x00000000028D0000-0x00000000028E0000-memory.dmp

    Filesize

    64KB

  • memory/4716-68-0x00000000061E0000-0x00000000061FE000-memory.dmp

    Filesize

    120KB

  • memory/4716-58-0x0000000005C80000-0x0000000005FD4000-memory.dmp

    Filesize

    3.3MB

  • memory/4716-56-0x00000000053E0000-0x0000000005402000-memory.dmp

    Filesize

    136KB

  • memory/4716-55-0x0000000005650000-0x0000000005C78000-memory.dmp

    Filesize

    6.2MB

  • memory/4716-53-0x00000000028D0000-0x00000000028E0000-memory.dmp

    Filesize

    64KB

  • memory/4716-54-0x00000000028D0000-0x00000000028E0000-memory.dmp

    Filesize

    64KB

  • memory/4716-52-0x0000000074EC0000-0x0000000075670000-memory.dmp

    Filesize

    7.7MB

  • memory/4716-51-0x0000000002870000-0x00000000028A6000-memory.dmp

    Filesize

    216KB