Analysis

  • max time kernel
    599s
  • max time network
    601s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-uk
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-uklocale:uk-uaos:windows10-2004-x64systemwindows
  • submitted
    22-04-2024 16:59

General

  • Target

    Extreme Injector v3.exe

  • Size

    1.9MB

  • MD5

    8a85b1dbf679febd30fe2f55a811de58

  • SHA1

    d06b7f96415b1ff21adff49ecd84b7b06f01fe6e

  • SHA256

    cfe2e6d9739a3251ed06594563f1d66e9dd018b3c74a96ca3734cca7880fb105

  • SHA512

    9b9ba49b1bc4ef056ade2146ad915eeba819485d49dd2825b4f914b68ec572304c8138f1c202508f40a0e8db8c6443270da333e323d631b27897edf915fefabf

  • SSDEEP

    49152:d4FdetMVCK1LVXXQezP3+Wgm18VeWo/Wz3XEVM:udkCCK3XXQO18VeWJLE

Malware Config

Extracted

Family

orcus

C2

s7vety-47274.portmap.host:47274

Mutex

2dfc3c3857c0466484c2056fcb13e0c9

Attributes
  • autostart_method

    Registry

  • enable_keylogger

    false

  • install_path

    %temp%\Windows Updater\updateclient.exe

  • reconnect_delay

    10000

  • registry_keyname

    WindowsUpdater

  • 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
  • Orcurs Rat Executable 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 7 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Extreme Injector v3.exe
    "C:\Users\Admin\AppData\Local\Temp\Extreme Injector v3.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5468
    • C:\Users\Admin\AppData\Local\Temp\Update.exe
      "C:\Users\Admin\AppData\Local\Temp\Update.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:5264
      • C:\Windows\SysWOW64\WindowsInput.exe
        "C:\Windows\SysWOW64\WindowsInput.exe" --install
        3⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        PID:5520
      • C:\Users\Admin\AppData\Local\Temp\Windows Updater\updateclient.exe
        "C:\Users\Admin\AppData\Local\Temp\Windows Updater\updateclient.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:4596
    • C:\Users\Admin\AppData\Local\Temp\Extreme Injector v3_or.exe
      "C:\Users\Admin\AppData\Local\Temp\Extreme Injector v3_or.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:5640
  • C:\Windows\SysWOW64\WindowsInput.exe
    "C:\Windows\SysWOW64\WindowsInput.exe"
    1⤵
    • Executes dropped EXE
    PID:3616
  • C:\Users\Admin\AppData\Local\Temp\Windows Updater\updateclient.exe
    "C:\Users\Admin\AppData\Local\Temp\Windows Updater\updateclient.exe"
    1⤵
    • Executes dropped EXE
    PID:4612
  • C:\Users\Admin\AppData\Local\Temp\Windows Updater\updateclient.exe
    "C:\Users\Admin\AppData\Local\Temp\Windows Updater\updateclient.exe"
    1⤵
    • Executes dropped EXE
    PID:4152

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    1KB

    MD5

    9be3069b2cf9222dde6c28dd9180a35a

    SHA1

    14b76614ed5c94c513b10ada5bd642e888fc1231

    SHA256

    5e4c38466764be178ea21ba3149d0580d25d035b57e081b3abb9c06a19cfd67a

    SHA512

    043256f38c20d8765ddf2f1d5912249bfbb017c0b630d24d9e4894f4a759dec66bf0ffaf878ac69e9dfd6db7ec5e090dd69de2333d83299ef43888c394398885

  • C:\Users\Admin\AppData\Local\Temp\Extreme Injector v3_or.exe

    Filesize

    1.9MB

    MD5

    ec801a7d4b72a288ec6c207bb9ff0131

    SHA1

    32eec2ae1f9e201516fa7fcdc16c4928f7997561

    SHA256

    b65f40618f584303ca0bcf9b5f88c233cc4237699c0c4bf40ba8facbe8195a46

    SHA512

    a07dd5e8241de73ce65ff8d74acef4942b85fc45cf6a7baafd3c0f9d330b08e7412f2023ba667e99b40e732a65e8fb4389f7fe73c7b6256ca71e63afe46cdcac

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

    Filesize

    918KB

    MD5

    8c6658a8808482bfab2b8ac9840f9e51

    SHA1

    c941721888b49c97c456af1b195a4018e4edeb0c

    SHA256

    95abbef690302956860c174bfa7ee8764f5d4379a2e13a6fd7c945ab2fd113a0

    SHA512

    4fe5a5cbf4baa919320ce2736cdac33e273719272ce76233466e98d334e94a33c8402b8656f35d4d099e3495370953fda1f943cfe07774551420eff004d3172d

  • 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/3616-102-0x000000001A4F0000-0x000000001A500000-memory.dmp

    Filesize

    64KB

  • memory/3616-67-0x000000001A4F0000-0x000000001A500000-memory.dmp

    Filesize

    64KB

  • memory/3616-68-0x000000001AB10000-0x000000001AC1A000-memory.dmp

    Filesize

    1.0MB

  • memory/3616-66-0x00007FFAEBBF0000-0x00007FFAEC6B1000-memory.dmp

    Filesize

    10.8MB

  • memory/3616-95-0x00007FFAEBBF0000-0x00007FFAEC6B1000-memory.dmp

    Filesize

    10.8MB

  • memory/4152-109-0x00007FFAEBBF0000-0x00007FFAEC6B1000-memory.dmp

    Filesize

    10.8MB

  • memory/4152-110-0x000000001B1F0000-0x000000001B200000-memory.dmp

    Filesize

    64KB

  • memory/4152-111-0x00007FFAEBBF0000-0x00007FFAEC6B1000-memory.dmp

    Filesize

    10.8MB

  • memory/4596-101-0x00007FFAEBBF0000-0x00007FFAEC6B1000-memory.dmp

    Filesize

    10.8MB

  • memory/4596-92-0x0000000003260000-0x0000000003270000-memory.dmp

    Filesize

    64KB

  • memory/4596-90-0x0000000003220000-0x0000000003238000-memory.dmp

    Filesize

    96KB

  • memory/4596-88-0x00000000031C0000-0x000000000320E000-memory.dmp

    Filesize

    312KB

  • memory/4596-87-0x000000001BD10000-0x000000001BD20000-memory.dmp

    Filesize

    64KB

  • memory/4596-86-0x00007FFAEBBF0000-0x00007FFAEC6B1000-memory.dmp

    Filesize

    10.8MB

  • memory/4596-103-0x000000001BD10000-0x000000001BD20000-memory.dmp

    Filesize

    64KB

  • memory/4596-104-0x000000001CF50000-0x000000001D112000-memory.dmp

    Filesize

    1.8MB

  • memory/4612-93-0x00007FFAEBBF0000-0x00007FFAEC6B1000-memory.dmp

    Filesize

    10.8MB

  • memory/4612-97-0x00007FFAEBBF0000-0x00007FFAEC6B1000-memory.dmp

    Filesize

    10.8MB

  • memory/5264-37-0x000000001BAB0000-0x000000001BAC0000-memory.dmp

    Filesize

    64KB

  • memory/5264-33-0x0000000002DF0000-0x0000000002DFE000-memory.dmp

    Filesize

    56KB

  • memory/5264-31-0x00007FFAEBBF0000-0x00007FFAEC6B1000-memory.dmp

    Filesize

    10.8MB

  • memory/5264-30-0x0000000002C60000-0x0000000002CBC000-memory.dmp

    Filesize

    368KB

  • memory/5264-26-0x0000000000BB0000-0x0000000000C9C000-memory.dmp

    Filesize

    944KB

  • memory/5264-85-0x00007FFAEBBF0000-0x00007FFAEC6B1000-memory.dmp

    Filesize

    10.8MB

  • memory/5264-39-0x0000000002E30000-0x0000000002E42000-memory.dmp

    Filesize

    72KB

  • memory/5264-40-0x0000000002E20000-0x0000000002E28000-memory.dmp

    Filesize

    32KB

  • memory/5468-5-0x0000000001000000-0x0000000001010000-memory.dmp

    Filesize

    64KB

  • memory/5468-1-0x00007FFAEEDC0000-0x00007FFAEF761000-memory.dmp

    Filesize

    9.6MB

  • memory/5468-35-0x00007FFAEEDC0000-0x00007FFAEF761000-memory.dmp

    Filesize

    9.6MB

  • memory/5468-2-0x0000000001000000-0x0000000001010000-memory.dmp

    Filesize

    64KB

  • memory/5468-3-0x00007FFAEEDC0000-0x00007FFAEF761000-memory.dmp

    Filesize

    9.6MB

  • memory/5468-4-0x000000001B7B0000-0x000000001B812000-memory.dmp

    Filesize

    392KB

  • memory/5468-0-0x000000001B6D0000-0x000000001B776000-memory.dmp

    Filesize

    664KB

  • memory/5520-56-0x000000001BBC0000-0x000000001BBD0000-memory.dmp

    Filesize

    64KB

  • memory/5520-58-0x000000001BED0000-0x000000001BF0C000-memory.dmp

    Filesize

    240KB

  • memory/5520-54-0x0000000000F70000-0x0000000000F7C000-memory.dmp

    Filesize

    48KB

  • memory/5520-57-0x0000000001760000-0x0000000001772000-memory.dmp

    Filesize

    72KB

  • memory/5520-55-0x00007FFAEBBF0000-0x00007FFAEC6B1000-memory.dmp

    Filesize

    10.8MB

  • memory/5520-63-0x00007FFAEBBF0000-0x00007FFAEC6B1000-memory.dmp

    Filesize

    10.8MB

  • memory/5640-94-0x000000001B710000-0x000000001B720000-memory.dmp

    Filesize

    64KB

  • memory/5640-64-0x000000001B710000-0x000000001B720000-memory.dmp

    Filesize

    64KB

  • memory/5640-34-0x00007FFAEBBF0000-0x00007FFAEC6B1000-memory.dmp

    Filesize

    10.8MB

  • memory/5640-105-0x000000001B710000-0x000000001B720000-memory.dmp

    Filesize

    64KB

  • memory/5640-106-0x000000001B710000-0x000000001B720000-memory.dmp

    Filesize

    64KB

  • memory/5640-36-0x0000000000750000-0x0000000000936000-memory.dmp

    Filesize

    1.9MB

  • memory/5640-91-0x00007FFAEBBF0000-0x00007FFAEC6B1000-memory.dmp

    Filesize

    10.8MB

  • memory/5640-38-0x000000001B710000-0x000000001B720000-memory.dmp

    Filesize

    64KB

  • memory/5640-100-0x000000001B710000-0x000000001B720000-memory.dmp

    Filesize

    64KB