Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-10-2024 01:08

General

  • Target

    f6165d4307d292ab5f69689aad2b3eea87d9b6189ff67c674067861f70976141.exe

  • Size

    917KB

  • MD5

    418ca841dfb9904c3c5c07b0b4a8cc22

  • SHA1

    485b466fa3e7d45a693fe0cae66a4fa806d43d70

  • SHA256

    f6165d4307d292ab5f69689aad2b3eea87d9b6189ff67c674067861f70976141

  • SHA512

    0a8e96cd384b71f16a4c9d6f9069ad4f89271ca66c42cc54247cd0c66a0cbdeff097893b555d4d39ae81a09c50fa7384dedf09d5438655f70d0eccd38ef488c8

  • SSDEEP

    24576:FmHR4MROxnF53ozrrcI0AilFEvxHPTIooo:MuMi7ozrrcI0AilFEvxHPT

Malware Config

Extracted

Family

orcus

C2

45.200.148.205:10134

Mutex

ac5a4ebd7b5f431aa47967ded2179f16

Attributes
  • autostart_method

    Registry

  • enable_keylogger

    false

  • install_path

    %programfiles%\sysreqfiles\winhost.exe

  • reconnect_delay

    10000

  • registry_keyname

    winhost

  • taskscheduler_taskname

    winhost.

  • watchdog_path

    AppData\winhosterf.exe

Signatures

  • Orcus

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

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

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

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • 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 WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f6165d4307d292ab5f69689aad2b3eea87d9b6189ff67c674067861f70976141.exe
    "C:\Users\Admin\AppData\Local\Temp\f6165d4307d292ab5f69689aad2b3eea87d9b6189ff67c674067861f70976141.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1100
    • C:\Program Files (x86)\sysreqfiles\winhost.exe
      "C:\Program Files (x86)\sysreqfiles\winhost.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 WriteProcessMemory
      PID:4012
      • C:\Users\Admin\AppData\Roaming\winhosterf.exe
        "C:\Users\Admin\AppData\Roaming\winhosterf.exe" /launchSelfAndExit "C:\Program Files (x86)\sysreqfiles\winhost.exe" 4012 /protectFile
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2140
        • C:\Users\Admin\AppData\Roaming\winhosterf.exe
          "C:\Users\Admin\AppData\Roaming\winhosterf.exe" /watchProcess "C:\Program Files (x86)\sysreqfiles\winhost.exe" 4012 "/protectFile"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3816
  • C:\Program Files (x86)\sysreqfiles\winhost.exe
    "C:\Program Files (x86)\sysreqfiles\winhost.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1524

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\sysreqfiles\winhost.exe

    Filesize

    917KB

    MD5

    418ca841dfb9904c3c5c07b0b4a8cc22

    SHA1

    485b466fa3e7d45a693fe0cae66a4fa806d43d70

    SHA256

    f6165d4307d292ab5f69689aad2b3eea87d9b6189ff67c674067861f70976141

    SHA512

    0a8e96cd384b71f16a4c9d6f9069ad4f89271ca66c42cc54247cd0c66a0cbdeff097893b555d4d39ae81a09c50fa7384dedf09d5438655f70d0eccd38ef488c8

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

    Filesize

    357B

    MD5

    a2b76cea3a59fa9af5ea21ff68139c98

    SHA1

    35d76475e6a54c168f536e30206578babff58274

    SHA256

    f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

    SHA512

    b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

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

    Filesize

    425B

    MD5

    4eaca4566b22b01cd3bc115b9b0b2196

    SHA1

    e743e0792c19f71740416e7b3c061d9f1336bf94

    SHA256

    34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

    SHA512

    bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

  • C:\Users\Admin\AppData\Local\Temp\1994.exe

    Filesize

    910KB

    MD5

    7c0e71d0e5bb714f6e37301b88ed2e38

    SHA1

    84bcf457016b7bb25b27608d86fc435a612f8631

    SHA256

    6d68371f2fa24f9d52cacd77c6dc68a208a2d0c03fd840525ab6fae0338b079d

    SHA512

    5dc1bb1ed9d58c76727d16c703fe18673b11370c353002cd1b94464050497ceaf667be393d063ebe2a6021862904f13e3749925c1ce6448bb02761d51b0c0746

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

    Filesize

    9KB

    MD5

    913967b216326e36a08010fb70f9dba3

    SHA1

    7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

    SHA256

    8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

    SHA512

    c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

  • memory/1100-1819-0x0000000005E00000-0x0000000005E1E000-memory.dmp

    Filesize

    120KB

  • memory/1100-1943-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

    Filesize

    48KB

  • memory/1100-2-0x00007FFFE04D0000-0x00007FFFE06C5000-memory.dmp

    Filesize

    2.0MB

  • memory/1100-1820-0x0000000005E00000-0x0000000005E1E000-memory.dmp

    Filesize

    120KB

  • memory/1100-4-0x0000000004F60000-0x0000000004FBC000-memory.dmp

    Filesize

    368KB

  • memory/1100-5-0x00000000055F0000-0x0000000005B94000-memory.dmp

    Filesize

    5.6MB

  • memory/1100-6-0x0000000005120000-0x00000000051B2000-memory.dmp

    Filesize

    584KB

  • memory/1100-7-0x0000000005510000-0x0000000005522000-memory.dmp

    Filesize

    72KB

  • memory/1100-9-0x0000000005530000-0x0000000005538000-memory.dmp

    Filesize

    32KB

  • memory/1100-8-0x0000000005520000-0x0000000005528000-memory.dmp

    Filesize

    32KB

  • memory/1100-13-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/1100-19-0x0000000000400000-0x00000000004EE000-memory.dmp

    Filesize

    952KB

  • memory/1100-25-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1100-43-0x0000000005560000-0x000000000556E000-memory.dmp

    Filesize

    56KB

  • memory/1100-44-0x0000000040000000-0x0000000040419000-memory.dmp

    Filesize

    4.1MB

  • memory/1100-37-0x0000000040000000-0x0000000040048000-memory.dmp

    Filesize

    288KB

  • memory/1100-31-0x0000000040000000-0x0000000040224000-memory.dmp

    Filesize

    2.1MB

  • memory/1100-51-0x0000000040000000-0x000000004177D000-memory.dmp

    Filesize

    23.5MB

  • memory/1100-56-0x0000000040000000-0x0000000040A99000-memory.dmp

    Filesize

    10.6MB

  • memory/1100-74-0x0000000040000000-0x00000000400B8000-memory.dmp

    Filesize

    736KB

  • memory/1100-68-0x0000000040000000-0x000000004017F000-memory.dmp

    Filesize

    1.5MB

  • memory/1100-62-0x0000000040000000-0x0000000040063000-memory.dmp

    Filesize

    396KB

  • memory/1100-218-0x0000000040000000-0x0000000040084000-memory.dmp

    Filesize

    528KB

  • memory/1100-1026-0x0000000040000000-0x0000000040008000-memory.dmp

    Filesize

    32KB

  • memory/1100-1022-0x0000000040000000-0x0000000040008000-memory.dmp

    Filesize

    32KB

  • memory/1100-1011-0x0000000040000000-0x0000000040008000-memory.dmp

    Filesize

    32KB

  • memory/1100-1085-0x0000000040000000-0x000000004000A000-memory.dmp

    Filesize

    40KB

  • memory/1100-1092-0x0000000005E10000-0x0000000005E40000-memory.dmp

    Filesize

    192KB

  • memory/1100-1081-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

    Filesize

    48KB

  • memory/1100-1093-0x0000000005E60000-0x0000000005ED4000-memory.dmp

    Filesize

    464KB

  • memory/1100-1293-0x0000000040000000-0x0000000040020000-memory.dmp

    Filesize

    128KB

  • memory/1100-1300-0x0000000005DF0000-0x0000000005DFA000-memory.dmp

    Filesize

    40KB

  • memory/1100-1304-0x0000000040000000-0x000000004000E000-memory.dmp

    Filesize

    56KB

  • memory/1100-1355-0x0000000040000000-0x0000000040094000-memory.dmp

    Filesize

    592KB

  • memory/1100-1475-0x00007FFFE04D0000-0x00007FFFE06C5000-memory.dmp

    Filesize

    2.0MB

  • memory/1100-1779-0x0000000005E00000-0x0000000005E18000-memory.dmp

    Filesize

    96KB

  • memory/1100-1783-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/1100-1785-0x0000000005DF0000-0x0000000005DF8000-memory.dmp

    Filesize

    32KB

  • memory/1100-1784-0x0000000005E10000-0x0000000005E3A000-memory.dmp

    Filesize

    168KB

  • memory/1100-1786-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

    Filesize

    48KB

  • memory/1100-1787-0x0000000005E00000-0x0000000005E20000-memory.dmp

    Filesize

    128KB

  • memory/1100-1788-0x0000000005E10000-0x0000000005E36000-memory.dmp

    Filesize

    152KB

  • memory/1100-1807-0x0000000005E20000-0x0000000005E60000-memory.dmp

    Filesize

    256KB

  • memory/1100-1811-0x0000000040000000-0x000000004003E000-memory.dmp

    Filesize

    248KB

  • memory/1100-1812-0x0000000005E10000-0x0000000005E3C000-memory.dmp

    Filesize

    176KB

  • memory/1100-1813-0x0000000005DF0000-0x0000000005DF8000-memory.dmp

    Filesize

    32KB

  • memory/1100-1814-0x0000000005DF0000-0x0000000005DFA000-memory.dmp

    Filesize

    40KB

  • memory/1100-1815-0x0000000005E10000-0x0000000005E34000-memory.dmp

    Filesize

    144KB

  • memory/1100-1816-0x0000000005E10000-0x0000000005E38000-memory.dmp

    Filesize

    160KB

  • memory/1100-1817-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

    Filesize

    48KB

  • memory/1100-1818-0x0000000005DF0000-0x0000000005DFA000-memory.dmp

    Filesize

    40KB

  • memory/1100-0-0x00007FFFE04D0000-0x00007FFFE06C5000-memory.dmp

    Filesize

    2.0MB

  • memory/1100-3-0x00000000029F0000-0x00000000029FE000-memory.dmp

    Filesize

    56KB

  • memory/1100-1-0x0000000000510000-0x00000000005FC000-memory.dmp

    Filesize

    944KB

  • memory/1100-1922-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/1100-1823-0x0000000005DF0000-0x0000000005DFE000-memory.dmp

    Filesize

    56KB

  • memory/1100-1824-0x0000000005E00000-0x0000000005E14000-memory.dmp

    Filesize

    80KB

  • memory/1100-1825-0x0000000005DF0000-0x0000000005E00000-memory.dmp

    Filesize

    64KB

  • memory/1100-1826-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

    Filesize

    48KB

  • memory/1100-1827-0x0000000005E10000-0x0000000005E38000-memory.dmp

    Filesize

    160KB

  • memory/1100-1828-0x0000000005DF0000-0x0000000005DFA000-memory.dmp

    Filesize

    40KB

  • memory/1100-1829-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

    Filesize

    48KB

  • memory/1100-1830-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

    Filesize

    48KB

  • memory/1100-1831-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

    Filesize

    48KB

  • memory/1100-1832-0x0000000005E00000-0x0000000005E14000-memory.dmp

    Filesize

    80KB

  • memory/1100-1833-0x0000000005E00000-0x0000000005E18000-memory.dmp

    Filesize

    96KB

  • memory/1100-1834-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

    Filesize

    48KB

  • memory/1100-1835-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

    Filesize

    48KB

  • memory/1100-1839-0x0000000005E10000-0x0000000005E32000-memory.dmp

    Filesize

    136KB

  • memory/1100-1840-0x0000000005E00000-0x0000000005E1C000-memory.dmp

    Filesize

    112KB

  • memory/1100-1838-0x0000000005DF0000-0x0000000005DFE000-memory.dmp

    Filesize

    56KB

  • memory/1100-1837-0x0000000005DF0000-0x0000000005E00000-memory.dmp

    Filesize

    64KB

  • memory/1100-1836-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

    Filesize

    48KB

  • memory/1100-1841-0x0000000005E00000-0x0000000005E14000-memory.dmp

    Filesize

    80KB

  • memory/1100-1842-0x0000000005E00000-0x0000000005E1A000-memory.dmp

    Filesize

    104KB

  • memory/1100-1843-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

    Filesize

    48KB

  • memory/1100-1844-0x0000000005DF0000-0x0000000005DFE000-memory.dmp

    Filesize

    56KB

  • memory/1100-1847-0x0000000005DF0000-0x0000000005DFE000-memory.dmp

    Filesize

    56KB

  • memory/1100-1846-0x0000000005E00000-0x0000000005E12000-memory.dmp

    Filesize

    72KB

  • memory/1100-1845-0x0000000005E00000-0x0000000005E18000-memory.dmp

    Filesize

    96KB

  • memory/1100-1855-0x0000000000400000-0x000000000040A000-memory.dmp

    Filesize

    40KB

  • memory/1100-1859-0x0000000000400000-0x0000000000408000-memory.dmp

    Filesize

    32KB

  • memory/1100-1879-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/1100-1867-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/1100-1902-0x0000000005DF0000-0x0000000005DFE000-memory.dmp

    Filesize

    56KB

  • memory/1100-1910-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/1100-1926-0x0000000000400000-0x000000000040A000-memory.dmp

    Filesize

    40KB

  • memory/1100-1822-0x0000000005DF0000-0x0000000005DFA000-memory.dmp

    Filesize

    40KB

  • memory/1100-1901-0x0000000000400000-0x0000000000408000-memory.dmp

    Filesize

    32KB

  • memory/1100-1893-0x0000000005DF0000-0x0000000005DF8000-memory.dmp

    Filesize

    32KB

  • memory/1100-1888-0x0000000005DF0000-0x0000000005DF8000-memory.dmp

    Filesize

    32KB

  • memory/1100-1931-0x0000000005E10000-0x0000000005E3A000-memory.dmp

    Filesize

    168KB

  • memory/1100-1932-0x0000000005E10000-0x0000000005E38000-memory.dmp

    Filesize

    160KB

  • memory/1100-1939-0x0000000005E00000-0x0000000005E1E000-memory.dmp

    Filesize

    120KB

  • memory/1100-1940-0x0000000005E10000-0x0000000005E36000-memory.dmp

    Filesize

    152KB

  • memory/1100-1941-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

    Filesize

    48KB

  • memory/1100-1944-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

    Filesize

    48KB

  • memory/1100-1821-0x0000000005DF0000-0x0000000005DF8000-memory.dmp

    Filesize

    32KB

  • memory/1100-1942-0x0000000005DF0000-0x0000000005DFA000-memory.dmp

    Filesize

    40KB

  • memory/1100-1945-0x0000000005DF0000-0x0000000005DFC000-memory.dmp

    Filesize

    48KB

  • memory/1100-1953-0x0000000005E00000-0x0000000005E18000-memory.dmp

    Filesize

    96KB

  • memory/1100-1952-0x0000000005E00000-0x0000000005E14000-memory.dmp

    Filesize

    80KB

  • memory/1100-1982-0x0000000040000000-0x000000004000C000-memory.dmp

    Filesize

    48KB

  • memory/1100-1992-0x0000000040000000-0x0000000040020000-memory.dmp

    Filesize

    128KB

  • memory/1100-2008-0x0000000040000000-0x000000004001A000-memory.dmp

    Filesize

    104KB

  • memory/1100-1978-0x0000000040000000-0x000000004000E000-memory.dmp

    Filesize

    56KB

  • memory/1100-2030-0x0000000040000000-0x000000004000A000-memory.dmp

    Filesize

    40KB