Analysis

  • max time kernel
    153s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    04-05-2021 02:02

General

  • Target

    fb302575202fbad92bacb697b475319bb868c43b8ffc62a5b251ff773e76dbc6.exe

Malware Config

Extracted

Family

orcus

C2

179.43.176.20:5555

Mutex

ae22de65f6d645a28ca19a1a6708c2e6

Attributes
  • autostart_method

    Registry

  • enable_keylogger

    true

  • install_path

    %appdata%\retry\retry.exe

  • reconnect_delay

    10000

  • registry_keyname

    retry

  • taskscheduler_taskname

    retry

  • watchdog_path

    AppData\retryWatchdog.exe

Signatures

  • Orcus

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

  • Orcus Main Payload 4 IoCs
  • Orcurs Rat Executable 4 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fb302575202fbad92bacb697b475319bb868c43b8ffc62a5b251ff773e76dbc6.exe
    "C:\Users\Admin\AppData\Local\Temp\fb302575202fbad92bacb697b475319bb868c43b8ffc62a5b251ff773e76dbc6.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1304
    • C:\Users\Admin\AppData\Roaming\retry\retry.exe
      "C:\Users\Admin\AppData\Roaming\retry\retry.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1992
      • C:\Users\Admin\AppData\Roaming\retryWatchdog.exe
        "C:\Users\Admin\AppData\Roaming\retryWatchdog.exe" /launchSelfAndExit "C:\Users\Admin\AppData\Roaming\retry\retry.exe" 1992 /protectFile
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1140
        • C:\Users\Admin\AppData\Roaming\retryWatchdog.exe
          "C:\Users\Admin\AppData\Roaming\retryWatchdog.exe" /watchProcess "C:\Users\Admin\AppData\Roaming\retry\retry.exe" 1992 "/protectFile"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1964
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {4A4EB658-6FC7-49F4-812A-4359A791CC1B} S-1-5-21-2455352368-1077083310-2879168483-1000:QWOCTUPM\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1428
    • C:\Users\Admin\AppData\Roaming\retry\retry.exe
      C:\Users\Admin\AppData\Roaming\retry\retry.exe
      2⤵
      • Executes dropped EXE
      PID:764

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\retryWatchdog.exe
    MD5

    913967b216326e36a08010fb70f9dba3

    SHA1

    7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

    SHA256

    8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

    SHA512

    c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

  • C:\Users\Admin\AppData\Roaming\retryWatchdog.exe
    MD5

    913967b216326e36a08010fb70f9dba3

    SHA1

    7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

    SHA256

    8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

    SHA512

    c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

  • C:\Users\Admin\AppData\Roaming\retryWatchdog.exe
    MD5

    913967b216326e36a08010fb70f9dba3

    SHA1

    7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

    SHA256

    8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

    SHA512

    c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

  • C:\Users\Admin\AppData\Roaming\retryWatchdog.exe.config
    MD5

    a2b76cea3a59fa9af5ea21ff68139c98

    SHA1

    35d76475e6a54c168f536e30206578babff58274

    SHA256

    f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

    SHA512

    b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

  • C:\Users\Admin\AppData\Roaming\retry\retry.exe
    MD5

    743a525c8aa82ecf21086573633cb63b

    SHA1

    9615f9006e748901c7127c3b51ea10c2711a03c0

    SHA256

    fb302575202fbad92bacb697b475319bb868c43b8ffc62a5b251ff773e76dbc6

    SHA512

    8401653399fcbe4721371e31a6fae2a25a27d251d0cc5d349c3d700087835a3dbdc41775cf5fb51d307c3a9c8e2b6eabe9d6e4123229317b78428817208e1dab

  • C:\Users\Admin\AppData\Roaming\retry\retry.exe
    MD5

    743a525c8aa82ecf21086573633cb63b

    SHA1

    9615f9006e748901c7127c3b51ea10c2711a03c0

    SHA256

    fb302575202fbad92bacb697b475319bb868c43b8ffc62a5b251ff773e76dbc6

    SHA512

    8401653399fcbe4721371e31a6fae2a25a27d251d0cc5d349c3d700087835a3dbdc41775cf5fb51d307c3a9c8e2b6eabe9d6e4123229317b78428817208e1dab

  • C:\Users\Admin\AppData\Roaming\retry\retry.exe
    MD5

    743a525c8aa82ecf21086573633cb63b

    SHA1

    9615f9006e748901c7127c3b51ea10c2711a03c0

    SHA256

    fb302575202fbad92bacb697b475319bb868c43b8ffc62a5b251ff773e76dbc6

    SHA512

    8401653399fcbe4721371e31a6fae2a25a27d251d0cc5d349c3d700087835a3dbdc41775cf5fb51d307c3a9c8e2b6eabe9d6e4123229317b78428817208e1dab

  • C:\Users\Admin\AppData\Roaming\retry\retry.exe.config
    MD5

    a2b76cea3a59fa9af5ea21ff68139c98

    SHA1

    35d76475e6a54c168f536e30206578babff58274

    SHA256

    f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

    SHA512

    b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

  • \Users\Admin\AppData\Roaming\retryWatchdog.exe
    MD5

    913967b216326e36a08010fb70f9dba3

    SHA1

    7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

    SHA256

    8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

    SHA512

    c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

  • \Users\Admin\AppData\Roaming\retry\retry.exe
    MD5

    743a525c8aa82ecf21086573633cb63b

    SHA1

    9615f9006e748901c7127c3b51ea10c2711a03c0

    SHA256

    fb302575202fbad92bacb697b475319bb868c43b8ffc62a5b251ff773e76dbc6

    SHA512

    8401653399fcbe4721371e31a6fae2a25a27d251d0cc5d349c3d700087835a3dbdc41775cf5fb51d307c3a9c8e2b6eabe9d6e4123229317b78428817208e1dab

  • memory/764-81-0x0000000000000000-mapping.dmp
  • memory/764-87-0x0000000004AB0000-0x0000000004AB1000-memory.dmp
    Filesize

    4KB

  • memory/1140-96-0x0000000075AD1000-0x0000000075AD3000-memory.dmp
    Filesize

    8KB

  • memory/1140-94-0x0000000001300000-0x0000000001301000-memory.dmp
    Filesize

    4KB

  • memory/1140-90-0x0000000000000000-mapping.dmp
  • memory/1304-60-0x0000000000B90000-0x0000000000B91000-memory.dmp
    Filesize

    4KB

  • memory/1304-66-0x00000000009F0000-0x00000000009F2000-memory.dmp
    Filesize

    8KB

  • memory/1304-65-0x00000000009D0000-0x00000000009E0000-memory.dmp
    Filesize

    64KB

  • memory/1304-64-0x0000000004080000-0x00000000040DA000-memory.dmp
    Filesize

    360KB

  • memory/1304-63-0x0000000000790000-0x000000000079C000-memory.dmp
    Filesize

    48KB

  • memory/1304-62-0x00000000049A0000-0x00000000049A1000-memory.dmp
    Filesize

    4KB

  • memory/1964-97-0x0000000000000000-mapping.dmp
  • memory/1992-68-0x0000000000000000-mapping.dmp
  • memory/1992-88-0x0000000000B20000-0x0000000000B2C000-memory.dmp
    Filesize

    48KB

  • memory/1992-80-0x0000000000B00000-0x0000000000B15000-memory.dmp
    Filesize

    84KB

  • memory/1992-79-0x00000000009E0000-0x0000000000A28000-memory.dmp
    Filesize

    288KB

  • memory/1992-78-0x0000000004970000-0x0000000004971000-memory.dmp
    Filesize

    4KB

  • memory/1992-72-0x00000000010F0000-0x00000000010F1000-memory.dmp
    Filesize

    4KB

  • memory/1992-101-0x0000000004975000-0x0000000004986000-memory.dmp
    Filesize

    68KB