Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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 1 IoCs
  • Orcurs Rat Executable 4 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 5 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 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f6165d4307d292ab5f69689aad2b3eea87d9b6189ff67c674067861f70976141.exe
    "C:\Users\Admin\AppData\Local\Temp\f6165d4307d292ab5f69689aad2b3eea87d9b6189ff67c674067861f70976141.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3044
    • C:\Program Files (x86)\sysreqfiles\winhost.exe
      "C:\Program Files (x86)\sysreqfiles\winhost.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2388
      • C:\Users\Admin\AppData\Roaming\winhosterf.exe
        "C:\Users\Admin\AppData\Roaming\winhosterf.exe" /launchSelfAndExit "C:\Program Files (x86)\sysreqfiles\winhost.exe" 2388 /protectFile
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2840
        • C:\Users\Admin\AppData\Roaming\winhosterf.exe
          "C:\Users\Admin\AppData\Roaming\winhosterf.exe" /watchProcess "C:\Program Files (x86)\sysreqfiles\winhost.exe" 2388 "/protectFile"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:896
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {136A1775-0C5E-4C48-9A09-725D0DA749A7} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2352
    • C:\Program Files (x86)\sysreqfiles\winhost.exe
      "C:\Program Files (x86)\sysreqfiles\winhost.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:984

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    357B

    MD5

    a2b76cea3a59fa9af5ea21ff68139c98

    SHA1

    35d76475e6a54c168f536e30206578babff58274

    SHA256

    f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

    SHA512

    b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

  • C:\Users\Admin\AppData\Local\Temp\Cab7226.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

    Filesize

    917KB

    MD5

    418ca841dfb9904c3c5c07b0b4a8cc22

    SHA1

    485b466fa3e7d45a693fe0cae66a4fa806d43d70

    SHA256

    f6165d4307d292ab5f69689aad2b3eea87d9b6189ff67c674067861f70976141

    SHA512

    0a8e96cd384b71f16a4c9d6f9069ad4f89271ca66c42cc54247cd0c66a0cbdeff097893b555d4d39ae81a09c50fa7384dedf09d5438655f70d0eccd38ef488c8

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

    Filesize

    9KB

    MD5

    913967b216326e36a08010fb70f9dba3

    SHA1

    7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

    SHA256

    8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

    SHA512

    c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

  • memory/3044-0-0x0000000074B6E000-0x0000000074B6F000-memory.dmp

    Filesize

    4KB

  • memory/3044-1-0x0000000000930000-0x0000000000A1C000-memory.dmp

    Filesize

    944KB

  • memory/3044-2-0x00000000002C0000-0x00000000002CE000-memory.dmp

    Filesize

    56KB

  • memory/3044-3-0x0000000074B60000-0x000000007524E000-memory.dmp

    Filesize

    6.9MB

  • memory/3044-4-0x00000000041A0000-0x00000000041FC000-memory.dmp

    Filesize

    368KB

  • memory/3044-7-0x0000000000BB0000-0x0000000000BB8000-memory.dmp

    Filesize

    32KB

  • memory/3044-6-0x0000000000920000-0x0000000000928000-memory.dmp

    Filesize

    32KB

  • memory/3044-5-0x0000000000630000-0x0000000000642000-memory.dmp

    Filesize

    72KB

  • memory/3044-11-0x0000000005740000-0x00000000057CE000-memory.dmp

    Filesize

    568KB

  • memory/3044-17-0x0000000005800000-0x00000000058EE000-memory.dmp

    Filesize

    952KB

  • memory/3044-23-0x00000000057A0000-0x0000000005852000-memory.dmp

    Filesize

    712KB

  • memory/3044-29-0x0000000040000000-0x0000000040034000-memory.dmp

    Filesize

    208KB

  • memory/3044-34-0x0000000040000000-0x00000000400E6000-memory.dmp

    Filesize

    920KB

  • memory/3044-39-0x0000000040000000-0x0000000040066000-memory.dmp

    Filesize

    408KB

  • memory/3044-44-0x0000000040000000-0x0000000040061000-memory.dmp

    Filesize

    388KB

  • memory/3044-49-0x0000000040000000-0x000000004017D000-memory.dmp

    Filesize

    1.5MB

  • memory/3044-64-0x0000000005690000-0x00000000056F4000-memory.dmp

    Filesize

    400KB

  • memory/3044-59-0x0000000040000000-0x0000000040039000-memory.dmp

    Filesize

    228KB

  • memory/3044-54-0x0000000040000000-0x00000000400AC000-memory.dmp

    Filesize

    688KB

  • memory/3044-69-0x0000000040000000-0x0000000040021000-memory.dmp

    Filesize

    132KB

  • memory/3044-168-0x0000000005620000-0x0000000005676000-memory.dmp

    Filesize

    344KB

  • memory/3044-955-0x0000000002150000-0x000000000215A000-memory.dmp

    Filesize

    40KB

  • memory/3044-1001-0x0000000005710000-0x00000000057FC000-memory.dmp

    Filesize

    944KB

  • memory/3044-1003-0x0000000005710000-0x00000000057FC000-memory.dmp

    Filesize

    944KB

  • memory/3044-1047-0x00000000048C0000-0x00000000048E6000-memory.dmp

    Filesize

    152KB

  • memory/3044-1048-0x0000000004790000-0x00000000047A8000-memory.dmp

    Filesize

    96KB

  • memory/3044-1055-0x0000000040000000-0x000000004003B000-memory.dmp

    Filesize

    236KB

  • memory/3044-1059-0x00000000048C0000-0x00000000048D6000-memory.dmp

    Filesize

    88KB

  • memory/3044-1060-0x00000000048C0000-0x00000000048EA000-memory.dmp

    Filesize

    168KB

  • memory/3044-1061-0x0000000004780000-0x0000000004788000-memory.dmp

    Filesize

    32KB

  • memory/3044-1062-0x00000000048C0000-0x00000000048E6000-memory.dmp

    Filesize

    152KB

  • memory/3044-1063-0x0000000004790000-0x00000000047AC000-memory.dmp

    Filesize

    112KB

  • memory/3044-1064-0x0000000005730000-0x000000000583A000-memory.dmp

    Filesize

    1.0MB

  • memory/3044-1065-0x0000000004780000-0x000000000478C000-memory.dmp

    Filesize

    48KB

  • memory/3044-1066-0x0000000004790000-0x00000000047B0000-memory.dmp

    Filesize

    128KB

  • memory/3044-1067-0x00000000048C0000-0x00000000048E6000-memory.dmp

    Filesize

    152KB

  • memory/3044-1068-0x0000000005620000-0x000000000569B000-memory.dmp

    Filesize

    492KB

  • memory/3044-1069-0x0000000004770000-0x0000000004776000-memory.dmp

    Filesize

    24KB

  • memory/3044-1070-0x0000000004770000-0x000000000477C000-memory.dmp

    Filesize

    48KB

  • memory/3044-1071-0x0000000005620000-0x00000000056EC000-memory.dmp

    Filesize

    816KB

  • memory/3044-1072-0x0000000005620000-0x000000000567B000-memory.dmp

    Filesize

    364KB

  • memory/3044-1073-0x0000000004770000-0x00000000047C0000-memory.dmp

    Filesize

    320KB

  • memory/3044-1121-0x0000000004790000-0x00000000047AC000-memory.dmp

    Filesize

    112KB

  • memory/3044-1154-0x0000000004790000-0x00000000047A2000-memory.dmp

    Filesize

    72KB

  • memory/3044-1155-0x0000000004790000-0x00000000047AC000-memory.dmp

    Filesize

    112KB

  • memory/3044-1166-0x00000000048C0000-0x00000000048E6000-memory.dmp

    Filesize

    152KB

  • memory/3044-1167-0x0000000074B6E000-0x0000000074B6F000-memory.dmp

    Filesize

    4KB

  • memory/3044-1168-0x0000000004780000-0x000000000478A000-memory.dmp

    Filesize

    40KB

  • memory/3044-1169-0x0000000004780000-0x000000000478C000-memory.dmp

    Filesize

    48KB

  • memory/3044-1170-0x0000000004780000-0x000000000478A000-memory.dmp

    Filesize

    40KB

  • memory/3044-1171-0x0000000004790000-0x00000000047AE000-memory.dmp

    Filesize

    120KB

  • memory/3044-1172-0x0000000004790000-0x00000000047AE000-memory.dmp

    Filesize

    120KB

  • memory/3044-1173-0x0000000004780000-0x0000000004788000-memory.dmp

    Filesize

    32KB

  • memory/3044-1174-0x0000000004780000-0x0000000004788000-memory.dmp

    Filesize

    32KB

  • memory/3044-1175-0x0000000004780000-0x000000000478A000-memory.dmp

    Filesize

    40KB

  • memory/3044-1176-0x0000000004780000-0x000000000478E000-memory.dmp

    Filesize

    56KB

  • memory/3044-1177-0x0000000004790000-0x00000000047A4000-memory.dmp

    Filesize

    80KB

  • memory/3044-1178-0x0000000004780000-0x0000000004790000-memory.dmp

    Filesize

    64KB

  • memory/3044-1179-0x0000000004780000-0x000000000478C000-memory.dmp

    Filesize

    48KB

  • memory/3044-1180-0x00000000048C0000-0x00000000048EA000-memory.dmp

    Filesize

    168KB

  • memory/3044-1181-0x0000000005700000-0x00000000057D5000-memory.dmp

    Filesize

    852KB

  • memory/3044-1182-0x00000000048C0000-0x00000000048E8000-memory.dmp

    Filesize

    160KB

  • memory/3044-1183-0x0000000004780000-0x000000000478A000-memory.dmp

    Filesize

    40KB

  • memory/3044-1184-0x0000000004780000-0x000000000478C000-memory.dmp

    Filesize

    48KB

  • memory/3044-1185-0x0000000004780000-0x000000000478C000-memory.dmp

    Filesize

    48KB

  • memory/3044-1186-0x0000000004780000-0x000000000478C000-memory.dmp

    Filesize

    48KB

  • memory/3044-1187-0x0000000004790000-0x00000000047A4000-memory.dmp

    Filesize

    80KB

  • memory/3044-1188-0x0000000004790000-0x00000000047A8000-memory.dmp

    Filesize

    96KB

  • memory/3044-1189-0x0000000004790000-0x00000000047A8000-memory.dmp

    Filesize

    96KB

  • memory/3044-1190-0x0000000004780000-0x000000000478C000-memory.dmp

    Filesize

    48KB

  • memory/3044-1191-0x0000000004780000-0x000000000478C000-memory.dmp

    Filesize

    48KB

  • memory/3044-1192-0x0000000004780000-0x000000000478C000-memory.dmp

    Filesize

    48KB

  • memory/3044-1193-0x0000000004780000-0x0000000004790000-memory.dmp

    Filesize

    64KB

  • memory/3044-1194-0x0000000004780000-0x000000000478E000-memory.dmp

    Filesize

    56KB

  • memory/3044-1195-0x00000000048C0000-0x00000000048E2000-memory.dmp

    Filesize

    136KB

  • memory/3044-1196-0x0000000004790000-0x00000000047AC000-memory.dmp

    Filesize

    112KB

  • memory/3044-1197-0x00000000048C0000-0x00000000048EC000-memory.dmp

    Filesize

    176KB

  • memory/3044-1198-0x0000000004790000-0x00000000047A4000-memory.dmp

    Filesize

    80KB

  • memory/3044-1199-0x0000000004780000-0x0000000004788000-memory.dmp

    Filesize

    32KB

  • memory/3044-1200-0x0000000004790000-0x00000000047AA000-memory.dmp

    Filesize

    104KB

  • memory/3044-1201-0x0000000004780000-0x000000000478C000-memory.dmp

    Filesize

    48KB

  • memory/3044-1202-0x0000000004780000-0x000000000478E000-memory.dmp

    Filesize

    56KB

  • memory/3044-1203-0x0000000004780000-0x000000000478A000-memory.dmp

    Filesize

    40KB

  • memory/3044-1204-0x00000000048C0000-0x0000000004900000-memory.dmp

    Filesize

    256KB

  • memory/3044-1205-0x0000000004790000-0x00000000047A2000-memory.dmp

    Filesize

    72KB

  • memory/3044-1206-0x0000000004780000-0x000000000478E000-memory.dmp

    Filesize

    56KB

  • memory/3044-1207-0x00000000048C0000-0x00000000048E4000-memory.dmp

    Filesize

    144KB

  • memory/3044-1208-0x00000000048C0000-0x00000000048E8000-memory.dmp

    Filesize

    160KB

  • memory/3044-1216-0x0000000004790000-0x000000000479A000-memory.dmp

    Filesize

    40KB

  • memory/3044-1220-0x0000000004790000-0x0000000004798000-memory.dmp

    Filesize

    32KB

  • memory/3044-1228-0x00000000048C0000-0x00000000048DC000-memory.dmp

    Filesize

    112KB

  • memory/3044-1240-0x00000000048C0000-0x00000000048DC000-memory.dmp

    Filesize

    112KB

  • memory/3044-1249-0x0000000004780000-0x0000000004788000-memory.dmp

    Filesize

    32KB

  • memory/3044-1254-0x0000000004780000-0x0000000004788000-memory.dmp

    Filesize

    32KB

  • memory/3044-1262-0x0000000004790000-0x0000000004798000-memory.dmp

    Filesize

    32KB

  • memory/3044-1263-0x0000000004780000-0x000000000478E000-memory.dmp

    Filesize

    56KB

  • memory/3044-1271-0x00000000048C0000-0x00000000048D2000-memory.dmp

    Filesize

    72KB

  • memory/3044-1283-0x0000000004790000-0x000000000479E000-memory.dmp

    Filesize

    56KB

  • memory/3044-1287-0x0000000004790000-0x000000000479A000-memory.dmp

    Filesize

    40KB

  • memory/3044-1292-0x00000000048C0000-0x00000000048EA000-memory.dmp

    Filesize

    168KB

  • memory/3044-1299-0x00000000057E0000-0x00000000058B5000-memory.dmp

    Filesize

    852KB

  • memory/3044-1300-0x00000000048C0000-0x00000000048E8000-memory.dmp

    Filesize

    160KB

  • memory/3044-1307-0x00000000048C0000-0x00000000048E6000-memory.dmp

    Filesize

    152KB

  • memory/3044-1306-0x0000000004790000-0x00000000047AE000-memory.dmp

    Filesize

    120KB

  • memory/3044-1308-0x0000000004780000-0x000000000478C000-memory.dmp

    Filesize

    48KB

  • memory/3044-1309-0x0000000004780000-0x000000000478A000-memory.dmp

    Filesize

    40KB

  • memory/3044-1311-0x0000000004780000-0x000000000478C000-memory.dmp

    Filesize

    48KB

  • memory/3044-1310-0x0000000004780000-0x000000000478C000-memory.dmp

    Filesize

    48KB